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Author SHA1 Message Date
Neil Roberts
97f8eed119 cogl: Add a CoglTexture2D backend
This is an optimised version of CoglTexture2DSliced that always deals
with a single texture and always uses the GL_TEXTURE_2D
target. cogl_texture_new_from_bitmap now tries to use this backend
first. If it can't create a texture with that size then it falls back
the sliced backend.

cogl_texture_upload_data_prepare has been split into two functions
because the sliced backend needs to know the real internal format
before the conversion is performed. Otherwise the converted bitmap
will be wasted if the backend can't support the size.
2009-12-02 22:03:27 +00:00
Neil Roberts
f3df76d512 cogl: Add _cogl_texture_driver_upload_to_gl
This provides a way to upload the entire data for a texture without
having to first call glTexImage and then glTexSubImage. This should be
faster especially with indirect rendering where it would needlessy
send the data for the texture twice.
2009-12-02 22:03:26 +00:00
Neil Roberts
19a19579ba cogl: Move some of the texture_2d_sliced_new_* functions into cogl-texture
new_from_data and new_from_file can be implemented in terms of
new_from_bitmap so it makes sense to move these to cogl-texture rather
than having to implement them in every texture backend.
2009-12-02 22:03:26 +00:00
Neil Roberts
9752493272 cogl: Add a sub texture backend
This adds a new texture backend which represents a sub texture of a
larger texture. The texture is created with a reference to the full
texture and a set of coordinates describing the region. The backend
simply defers to the full texture for all operations and maps the
coordinates to the other range. You can also use coordinates outside
the range [0,1] to create a repeated version of the full texture.

A new public API function called cogl_texture_new_from_sub_texture is
available to create the sub texture.
2009-12-02 22:03:08 +00:00
Neil Roberts
070a91f311 cogl: Make the callback for foreach_sub_texture_in_region use const
The CoglTextureSliceCallback function pointer now takes const pointers
for the texture coordinates. This makes it clearer that the callback
should not modify the array and therefore the backend can use the same
array for both sets of coords.
2009-12-02 22:03:08 +00:00
Neil Roberts
1a1de0e278 cogl: Add a texture utility function for manually repeating
Given a region of texture coordinates this utility invokes a callback
enough times to cover the region with a subregion that spans the
texture at most once. Eg, if called with tx1 and tx2 as 0.5 and 3.0 it
it would invoke the callback with:

0.5,1.0  1.0,2.0  2.0,3.0

Manual repeating is needed by all texture backends regardless of
whether they can support hardware repeating because when Cogl calls
the foreach_sub_texture_in_region method then it sets the wrap mode to
GL_CLAMP_TO_EDGE and no hardware repeating is possible.
2009-12-02 22:03:08 +00:00
Neil Roberts
5fcb29c916 cogl-primitives: Check for repeating after the coordinate transform
In _cogl_multitexture_quad_single_primitive we use a wrap mode of
GL_CLAMP_TO_EDGE if the texture coordinates are all in the range [0,1]
or GL_REPEAT otherwise. This is to avoid pulling in pixels from either
side when using GL_LINEAR filter mode and rendering the entire
texture. Previously it was checking using the unconverted texture
coordinates. This is ok unless the texture backend is radically
transforming the texture coordinates, such as in the sub texture
backend where the coordinates may map to something completely
different. We now check whether the coordinates are in range after
converting them.
2009-12-02 22:03:07 +00:00
Neil Roberts
812d4d25bb cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced
Most of the fields that were previously in CoglTexture are specific to
the implementation of CoglTexture2DSliced so they should be placed
there instead. For example, the 'mipmaps_dirty' flag is an
implementation detail of the ensure_mipmaps function so it doesn't
make sense to force all texture backends to have this function.

Other fields such as width, height, gl_format and format may make
sense for all textures but I've added them as virtual functions
instead. This may make more sense for a sub-texture backend for
example where it can calculate these based on the full texture.
2009-12-02 22:03:07 +00:00
Neil Roberts
071dea2fbc cogl: Move data only used for upload out of CoglTexture
The CoglTexture struct previously contained some fields which are only
used to upload data such as the CoglBitmap and the source GL
format. These are now moved to a separate CoglTextureUploadData struct
which only exists for the duration of one of the cogl_texture_*_new
functions. In cogl-texture there are utility functions which operate
on this new struct rather than on CoglTexture directly.

Some of the fields that were previously stored in the CoglBitmap
struct are now copied to the CoglTexture such as the width, height,
format and internal GL format.

The rowstride was previously stored in CoglTexture and this was
publicly accessible with the cogl_texture_get_rowstride
function. However this doesn't seem to be a useful function because
there is no need to use the same rowstride again when uploading or
downloading new data. Instead cogl_texture_get_rowstride now just
calculates a suitable rowstride from the format and width of the
texture.
2009-12-02 22:03:07 +00:00
Neil Roberts
7f58c14dcd cogl: Use #ifdef GL around GL_TEXTURE_RECTANGLE_ARB
Commit 558b17ee1e added support for rectangle textures to the
framebuffer code. Under GLES there is no GL_TEXTURE_RECTANGLE_ARB
definition so this was breaking the build. The rest of Cogl uses
ifdef's around that constant so we should do the same here.
2009-12-02 21:59:58 +00:00
Emmanuele Bassi
7a33b706a4 Remove a gtk-doc annotation
The Mesa matrix code still has a comment that looks like a gtk-doc
annotation.
2009-12-02 11:37:13 +00:00
Emmanuele Bassi
1d87ecc6a1 materials: Get the right blend function for alpha
The correct blend function for the alpha channel is:

  GL_ONE, GL_ONE_MINUS_SRC_ALPHA

As per bug 1406. This fix was dropped when the switch to premultiplied
alpha was merged.
2009-12-01 16:25:54 +00:00
Neil Roberts
1bb034fbd7 cogl: Enable blending if a lighting colour is semi-transparent
We currently enable blending if the material colour has
transparency. This patch makes it also enable blending if any of the
lighting colours have transparency. Arguably this isn't neccessary
because we don't expose any API to enable lighting so there is no
bug. However it is currently possible to enable lighting with a direct
call to glEnable and this otherwise works so it is a shame not to have
it.

http://bugzilla.openedhand.com/show_bug.cgi?id=1907
2009-11-30 19:08:38 +00:00
Robert Bragg
934eb5d251 primitives: Don't use dynamic arrays since VS2008 can't cope with them :-(
This changes _cogl_path_fill_nodes_scanlines to use g_alloca instead of
using a variable to declare an array length.
2009-11-27 15:24:09 +00:00
Robert Bragg
439f8c62b0 cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API
cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now
deprecated and new code should use the new cogl_framebuffer_* API instead.

Code that previously did:
    cogl_push_draw_buffer ();
    cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer);
    /* draw */
    cogl_pop_draw_buffer ();
should now be re-written as:
    cogl_push_framebuffer (buffer);
    /* draw */
    cogl_pop_framebuffer ();

As can be seen from the example above the rename has been used as an
opportunity to remove the redundant target argument from
cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen
buffer, and finally the term framebuffer may be a bit more familiar to
anyone coming from an OpenGL background.
2009-11-26 19:33:14 +00:00
Robert Bragg
b598210e01 cogl_offscreen: deprecate cogl_offscreen_ref/unref.
New code should use cogl_handle_ref/unref
2009-11-26 19:33:13 +00:00
Neil Roberts
e12a691187 cogl: Use a vtable for the texture backends instead of a type and switch
Instead of storing an enum with the backend type for each texture and
then using a switch statement to decide which function to call, we
should store pointers to all of the functions in a struct and have
each texture point to that struct. This is potentially slightly faster
when there are more backends and it makes implementing new backends
easier because it's more obvious which functions have to be
implemented.
2009-11-25 13:47:28 +00:00
Robert Bragg
558b17ee1e offscreen: cogl_offscreen_new_to_texture now supports GL_TEXTURE_RECTANGLE_ARB
cogl_offscreen_new_to_texture previously bailed out if the given texture's
GL target was anything but GL_TEXTURE_2D, but it now also allows
foreign GL_TEXTURE_RECTANGLE_ARB textures.

Thanks to Owen for reporting this issue, ref:
https://bugzilla.gnome.org/show_bug.cgi?id=601032
2009-11-25 02:56:25 +00:00
Robert Bragg
d3a01e0c96 debug: remove the COGL_DEBUG=client-side-matrices option
Cogl only supports client side matrices so this debug option is no longer
useful.
2009-11-25 02:55:56 +00:00
Robert Bragg
b38c6b420f [cogl-material] Adds cogl_material_copy() API
cogl_material_copy can be used to create a new CoglHandle referencing a copy
of some given material.

From now on we will advise that developers always aim to use this function
instead of cogl_material_new() when creating a material that is in any way
derived from another.

By using cogl_material_copy, Cogl can maintain an ancestry for each material
and keep track of "similar" materials.  The plan is that Cogl will use this
information to minimize the cost of GPU state transitions.
2009-11-24 17:58:22 +00:00
Robert Bragg
70ca3bfe41 [cogl] remove unused gles/cogl-utils.[c,h]
The only function in gles/cogl-utils.c was cogl_util_next_p2() and it's
redundant since we also have a cogl/cogl-utils.[c,h]
2009-11-24 17:58:22 +00:00
Robert Bragg
4a63af0c63 docs: Don't document cogl_flush_gl_state as public API
This function was #if 0'd before we released Clutter 1.0 so there's no
implementation of it.  At some point we thought it might assist with
developers breaking out into raw OpenGL.  Breaking out to raw GL is a
difficult problem though so we decided instead we will wait for a specific
use case to arrise before trying to support it.
2009-11-24 17:58:22 +00:00
Neil Roberts
1107fa8797 Minor fix to cogl material
_cogl_material_get_layer expects a CoglMaterial* pointer but it was
being called with a CoglHandle. This doesn't matter because the
CoglHandle is actually just the CoglMaterial* pointer anyway but it
breaks the ability to change the _cogl_material_pointer_from_handle
macro.
2009-11-23 18:36:59 +00:00
Emmanuele Bassi
8d64c4641d docs: Increase consistency in Cogl documentation 2009-11-19 14:19:59 +00:00
Emmanuele Bassi
550c14449e docs: Documentation fixes for CoglMatrix
Clean up the references, the docbook tags, and the style to fit in
with the rest of the API references for Cogl and Clutter.
2009-11-19 13:56:47 +00:00
Emmanuele Bassi
056cfcffc3 Whitespace fix for cogl-color.h 2009-11-19 13:56:47 +00:00
Emmanuele Bassi
851d628cf8 docs: Documentation fixes for CoglMaterial
Clean up the references, the docbook tags, and the style to fit in
with the rest of the API references for Cogl and Clutter.
2009-11-19 13:56:47 +00:00
Emmanuele Bassi
fe804f1d02 docs: Documentation fixes for CoglBitmap
• Use the same style for the Cogl API reference as the one used for
  the Clutter API reference.

• Fix the introspection annotations for cogl_bitmap_get_size_from_file()
2009-11-19 13:56:47 +00:00
Emmanuele Bassi
05a5a7e759 docs: Remove non-gtk-doc annotations
The imported Mesa matrix code has some documentation annotations
that make gtk-doc very angry. Since it's all private anyway we
can safely make gtk-doc ignore the offending stuff.
2009-11-19 13:55:46 +00:00
Neil Roberts
7a011af974 docs: Fix the 'Since' annotation for some functions
The 'Since' annotation needs to have a colon after it or gtk-doc won't
pick it up.
2009-11-19 11:51:21 +00:00
Neil Roberts
8ef57898ad cogl: Use APIENTRY for GL function pointer declarations
This matters for platforms such as Windows that use a different
calling covention from the default for GL functions.
2009-11-18 19:24:09 +00:00
Neil Roberts
be58e5261f build: Fix out-of-tree builds for cogl-defines.h
$(COGL_DRIVER)/cogl-defines.h is generated in the configure script so
it ends up in the build directory. Therefore the build rule for
cogl/cogl-defines.h should depend on the file in $(builddir) not
$(srcdir).
2009-11-18 19:24:09 +00:00
Emmanuele Bassi
19e485325f docs: Clean up deprecation notices
The deprecation notices in gtk-doc should also refer to the
release that added the deprecation, and if the deprecated
symbol has been replaced by something else then the new symbol
should be correctly referenced.
2009-11-18 18:04:13 +00:00
Emmanuele Bassi
5f28c8b654 build: Make cogl.h not conditional on driver defines
The main COGL header cogl.h is currently created at configure time
because it conditionally includes the driver-dependent defines. This
sometimes leads to a stale cogl.h with old definitions which can
break the build until you clean out the whole tree and start from
scratch.

We can generate a stable cogl-defines.h at build time from the
equivalent driver-dependent header and let cogl.h include that
file instead.
2009-11-18 17:49:21 +00:00
Emmanuele Bassi
60fae6a92e build: Add cogl-matrix-private.h to the dist 2009-11-18 14:43:46 +00:00
Emmanuele Bassi
425f3b4660 build: Add cogl-feature-functions.h to the dist 2009-11-18 14:43:46 +00:00
Neil Roberts
142305b1d5 cogl: Add the missing terminators for the arrays of feature functions
_cogl_feature_check expects the array of function names to be
terminated with a NULL pointer but I forgot to add this. This was
causing crashes depending on what happened to be in memory after the
array.
2009-11-18 13:23:10 +00:00
Neil Roberts
2832940603 cogl: Use the GL_EXT_blend_{func,equation}_separate extensions
We should use these extensions to check for glBlendFuncSeparate and
glBlendEquationSeparate as well as checking the GL version number.
2009-11-17 18:06:31 +00:00
Neil Roberts
6e0877507e cogl: Don't bother checking for NPOTs or VBOs on later GLs
For VBOs, we don't need to check for the extension if the GL version
is greater than 1.5. Non-power-of-two textures are given in 2.0.

We could also assume shader support in GL 2.0 except that the function
names are different from those in the extension so it wouldn't work
well with the current mechanism.
2009-11-17 17:22:22 +00:00
Neil Roberts
91cde78a70 cogl: Make it easier to add checks for GL extensions
Previously if you need to depend on a new GL feature you had to:

- Add typedefs for all of the functions in cogl-defines.h.in

- Add function pointers for each of the functions in
  cogl-context-driver.h

- Add an initializer for the function pointers in
  cogl-context-driver.c

- Add a check for the extension and all of the functions in
  cogl_features_init. If the extension is available under multiple
  names then you have to duplicate the checks.

This is quite tedious and error prone. This patch moves all of the
features and their functions into a list of macro invocations in
cogl-feature-functions.h. The macros can be redefined to implement all
of the above tasks from the same header.

The features are described in a struct with a pointer to a table of
functions. A new function takes the feature description from this
struct and checks for its availability. The feature can take a list of
extension names with a list of alternate namespaces (such as "EXT" or
"ARB"). It can also detect the feature from a particular version of
GL.

The typedefs are now gone and instead the function pointer in the Cogl
context just directly contains the type.

Some of the functions in the context were previously declared with the
'ARB' extension. This has been removed so that now all the functions
have no suffix. This makes more sense when the extension could
potentially be merged into GL core as well.
2009-11-17 15:11:26 +00:00
Neil Roberts
62a37d8e53 Use the GL_ARB_multitexture extension on GL 1.2
Cogl requires multi-texturing support. This is only available as an
extension in GL 1.2 so we should check for it before accepting the
driver.

http://bugzilla.openedhand.com/show_bug.cgi?id=1875
2009-11-13 15:56:01 +00:00
Neil Roberts
2e99b276a4 cogl-material: Fallback to BlendFunc if BlendFuncSeparate is unavailable
glBlendFuncSeparate is only available in OpenGL 1.4. If we
conditionally check for this then Clutter will work with OpenGL 1.2.

http://bugzilla.openedhand.com/show_bug.cgi?id=1875
2009-11-13 15:55:55 +00:00
Neil Roberts
568c29ba49 Validate that the GL version is >= 1.2
There is a new internal Cogl function called _cogl_check_driver_valid
which looks at the value of the GL_VERSION string to determine whether
the driver is supported. Clutter now calls this after the stage is
realized. If it fails then the stage is marked as unrealized and a
warning is shown.

_cogl_features_init now also checks the version number before getting
the function pointers for glBlendFuncSeparate and
glBlendEquationSeparate. It is not safe to just check for the presence
of the functions because some drivers may define the function without
fully implementing the spec.

The GLES version of _cogl_check_driver_valid just always returns TRUE
because there are no version requirements yet.

Eventually the function could also check for mandatory extensions if
there were any.

http://bugzilla.openedhand.com/show_bug.cgi?id=1875
2009-11-13 15:55:48 +00:00
Neil Roberts
dab1da20ae [cogl-primitives] Don't clear the whole stencil buffer
When _cogl_add_path_to_stencil_buffer is used to draw a path we don't
need to clear the entire stencil buffer. Instead it can clear just the
bounding box of the path. This adds an extra parameter called
'need_clear' which is only set if the stencil buffer is being used for
clipping.

http://bugzilla.openedhand.com/show_bug.cgi?id=1829
2009-11-13 10:51:47 +00:00
Neil Roberts
bc8faf52f4 Remove _cogl_flush_matrix_stacks from cogl-internal.h
The definition for this function was removed in f7d64e5abvoid so it
should be removed from the header too.
2009-11-12 17:01:44 +00:00
Emmanuele Bassi
9fa562ad21 cogl: Declare cogl_is_bitmap()
The function is automatically defined by the CoglHandle type
definition macro, but it still requires to be declared in the
header file to be used.
2009-11-11 10:32:39 +00:00
Neil Roberts
1ce25ffbb2 cogl: Add an initialiser for enable_flags in cogl_begin_gl
This fixes a warning about an uninitialised value. It could also
potentially fix some crashes for example if the enable_flags value
happened to include a bit for enabling a vertex array if no vertex
buffer pointer was set.
2009-11-09 11:50:16 +00:00
Emmanuele Bassi
7e17822cfd Clean up cogl.h template
The inclusion order is mostly random, and it should really be
in alphabetic order, just like clutter.h.

Also, cogl-vertex-buffer.h is included twice.
2009-11-06 15:06:39 +00:00
Tim Horton
fcd8237ac5 osx: CGBitmapContextCreate can't make 24bpp, alphaless offscreen pixmaps
While loading a JPEG from disk (with clutter_texture_new_from_file),
I got the following:

<Error>: CGBitmapContextCreate: unsupported parameter combination: 8
integer bits/component; 24 bits/pixel; 3-component colorspace;
kCGImageAlphaNone; 3072 bytes/row.
<Error>: CGContextDrawImage: invalid context

Looking around, I found that CGBitmapContextCreate can't make 24bpp
offscreen pixmaps without an alpha channel...

This fixes the bug, and seems to not break other things...

http://bugzilla.openedhand.com/show_bug.cgi?id=1159

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-11-06 14:10:41 +00:00
Emmanuele Bassi
30bc36082e Do not pass flags to g_module_open(NULL)
The flags are ignored when opening the main module, so we
should pass 0 to avoid confusion when reading the source.
2009-11-06 14:06:18 +00:00
Robert Bragg
c1d9e09d38 [clip-stack] stop using deprecated cogl_clip_push_window_rect API
try_pushing_rect_as_window_rect now uses the new
cogl_clip_push_window_rectangle API.
2009-11-05 21:10:17 +00:00
Robert Bragg
272e227109 [cogl-clip] deprecate parts and cleanup the API
cogl_clip_push() which accepts a rectangle in model space shouldn't have
been defined to take x,y,width,height arguments because this isn't consistant
with other Cogl API dealing with model space rectangles.  If you are using a
coordinate system with the origin at the center and the y+ extending up,
then x,y,width,height isn't as natural as (x0,y0)(x1,y1). This API has
now been replace with cogl_clip_push_rectangle()

(As a general note: the Cogl API should only use the x,y,width,height style
when the appropriate coordinate space is defined by Cogl to have a top left
origin.  E.g.  window coordinates, or potentially texture coordinates)

cogl_clip_push_window_rect() shouldn't have been defined to take float
arguments since we only clip with integral pixel precision. We also
shouldn't have abbreviated "rectangle". This API has been replaced with
cogl_clip_push_window_rectangle()

cogl_clip_ensure() wasn't documented at all in Clutter 1.0 and probably
no one even knew it existed. This API isn't useful, and so it's now
deprecated. If no one complains we may remove the API altogether for
Clutter 1.2.

cogl_clip_stack_save() and cogl_clip_stack_restore() were originally added
to allow us to save/restore the clip when switching to/from offscreen
rendering.  Now that offscreen draw buffers are defined to own their clip
state and the state will be automatically saved and restored this API is now
redundant and so deprecated.
2009-11-05 21:10:17 +00:00
Robert Bragg
6cd49fdd40 [clip-stack] Internally track model space clip rects as (x0,y0)(x1,y1) pairs
Don't track the rectangles as x0,y0,width,height. This is in preparation
for some API tidy up.
2009-11-05 21:10:17 +00:00
Robert Bragg
7752ed98f1 [clip-stack] move lots of supporting code from cogl.c to cogl-clip-stack.c
There was quite a bit of code in cogl.c that was only used to support
cogl-clip-stack.c, so this has now been moved to cogl-clip-stack.c
2009-11-05 21:10:16 +00:00
Robert Bragg
864e12df05 [debug] Adds a COGL_DEBUG=force-scanline-paths
For a long time now the GLES driver for Cogl has supported a fallback
scanline rasterizer for filling paths when no stencil buffer is available,
but now that we build the same cogl-primitives code for GL and GLES I
thought it may sometimes be useful for debugging to force Cogl to use the
scanline rasterizer instead of the current stencil buffer approach.
2009-11-05 21:10:16 +00:00
Robert Bragg
c52d878032 [cogl-primitives] Get rid of driver specific cogl-primitives code
These files were practically identical, except the gles code had additional
support for filling paths without a stencil buffer.  All the driver code has
now been moved into cogl/cogl-primitives.c
2009-11-04 16:02:34 +00:00
Robert Bragg
fec13f6202 [cogl-texture-2d-sliced] allow COGL_FORMAT_ANY with _new_with_size()
It's useful when initialzing offscreen draw buffers to be able to ask
Cogl to create a texture of a given size and with the default internal
pixel format.
2009-11-04 03:34:07 +00:00
Robert Bragg
90dbae5aa9 [cogl-draw-buffer] fix Cogl -> GL viewport coord conversion
Before we call glViewport we need to convert Cogl viewport coordinates
(where the origin is defined to be top left) to OpenGL coordinates
(where the origin is defined to be bottom left)

We weren't considering that offscreen rendering is always upside down
and in this case Cogl coordinates == OpenGL coordinates.
2009-11-04 03:34:05 +00:00
Robert Bragg
149e3e168a [cogl_clip_push_window_rect] fix Cogl -> GL coordinate conversion
Firstly this now uses the draw buffer height not the viewport height
when we need to perform a y = height - y conversion, since (as the
name suggests) we are dealing with window coordinates not viewport
coordinates.

Secondly this skips any conversion when the current draw buffer is an
offscreen draw buffer since offscreen rendering is always forced to be
upside down and in this case Cogl window coordinates == GL window
coordinates.
2009-11-04 03:34:05 +00:00
Robert Bragg
0369a1b84d [matrix] Adds cogl_matrix_get_inverse API
This new API takes advantage of the recently imported Mesa code to support
inverse matrix calculation.  The matrix code keeps track (via internal
flags) of the transformations a matrix represents so that it can select an
optimized inversion function.

Note: although other aspects of the Cogl matrix API have followed a similar
style to Cairo's matrix API we haven't added a cogl_matrix_invert API
because the inverse of a CoglMatrix is actually cached as part of the
CoglMatrix structure meaning a destructive API like cogl_matrix_invert
doesn't let users take advantage of this caching design.
2009-11-04 03:34:05 +00:00
Robert Bragg
8051596e96 [debug] Adds a COGL_DEBUG=matrices debug option
This adds a COGL_DEBUG=matrices debug option that can be used to trace all
matrix manipulation done using the Cogl API.  This can be handy when you
break something in such a way that a trace is still comparable with a
previous working version since you can simply diff a log of the broken
version vs the working version to home in on the bug.
2009-11-04 03:34:04 +00:00
Robert Bragg
eb438dd499 [cogl-matrix] Import Mesa's matrix manipulation code
This pulls in code from Mesa to improve our matrix manipulation support. It
includes support for calculating the inverse of matrices based on top of a
matrix categorizing system that allows optimizing certain matrix types.
(the main thing we were after) but also adds some optimisations for
rotations.

Changes compared to the original code from Mesa:

- Coding style is consistent with the rest of Cogl
- Instead of allocating matrix->m and matrix->inv using malloc, our public
  CoglMatrix typedef is large enough to directly contain the matrix, its
  inverse, a type and a set of flags.
- Instead of having a _math_matrix_analyse which updates the type, flags and
  inverse, we have _math_matrix_update_inverse which essentially does the
  same thing (internally making use of _math_matrix_update_type_and_flags())
  but with additional guards in place to bail out when the inverse matrix is
  still valid.
- When initializing a matrix with the identity matrix we don't immediately
  initialize the inverse matrix; rather we just set the dirty flag for the
  inverse (since it's likely the user won't request the inverse of the
  identity matrix)
2009-11-04 03:34:04 +00:00
Robert Bragg
d38d888f78 [cogl] avoid any state changes when cogl_set_backface_culling_enable is a nop
This is a simple optimization to bail out of cogl_set_backface_culling_enable
if it's not resulting in a change of state.
2009-11-04 03:34:04 +00:00
Robert Bragg
764cca75b4 [cogl] Use clockwise face winding for offscreen buffers with culling enabled
Because Cogl defines the origin for texture as top left and offscreen draw
buffers can be used to render to textures, we (internally) force all
offscreen rendering to be upside down. (because OpenGL defines the origin
to be bottom left)

By forcing the users scene to be rendered upside down though we also reverse
the winding order of all the drawn triangles which may interfere with the
users use of backface culling.  This patch ensures that we reverse the
winding order for a front face (if culling is in use) while rendering
offscreen so we don't conflict with the users back face culling.
2009-11-04 03:34:03 +00:00
Robert Bragg
40b8399d49 [cogl_read_pixels] don't force a 4 byte pack alignment
Technically this change shouldn't make a difference since we are
calling glReadPixels with GL_RGBA GL_UNSIGNED_BYTE which is a 4
byte format and it should always result in the same value according
to how OpenGL calculates the location of sequential rows.

i.e. k  = a/s * ceil(snl/a) where:
 a = alignment
 s = component size (1)
 n = number of components per pixel (4)
 l = number of pixels in a row
gives:
k = 4/1 * ceil(4l/4) and k = 1/1 * ceil(4l/1) which are equivalent

I'm changing it because I've seen i915 driver code that bails out of
hardware accelerated paths if the alignment isn't 1, and because
conceptually we have no alignment constraints here so even if the current
value has no effect, when we start reading back other formats it may upset
things.
2009-11-04 03:34:03 +00:00
Robert Bragg
a222ee22f9 [cogl_read_pixels] call cogl_flush() before changing glPixelStore state
We were previously calling cogl_flush() after setting up the glPixelStore
state for calling glReadPixels, but flushing the journal could itself
change the glPixelStore state.
2009-11-04 03:34:02 +00:00
Robert Bragg
ed431a3c65 [cogl_read_pixels] ensure we flush the current draw buffer state before reading
Make sure we call _cogl_draw_buffer_flush_state() before glReadPixels() to
be sure we have bound the correct framebuffer.
2009-11-04 03:34:02 +00:00
Robert Bragg
b47404c91d [cogl_read_pixels] fixes for calculating the y offset when rendering offscreen
Since offscreen rendering is forced to be upside down we don't need to do
any conversion of the users coordinates to go from Cogl window coordinates
to OpenGL window coordinates.
2009-11-04 03:34:02 +00:00
Robert Bragg
426197f51d [read-pixels] don't flip data when reading from offscreen draw buffers
Since we do all offscreen rendering upside down (so that we can have the
origin for texture coordinates be the top left of textures for the cases
where offscreen draw buffers are bound to textures) we don't need to flip
data read back from an offscreen framebuffer before we we return it to the
user.
2009-11-04 03:34:01 +00:00
Robert Bragg
21322848e0 [clip-stack] tidy up transform_point() code
I was originally expecting the code not to handle offset viewports or
viewports with a different size to the framebuffer, but it turns out the
code worked fine.  In the process though I think I made the code slightly
more readable.
2009-11-04 03:32:52 +00:00
Robert Bragg
8c3a132ecb [cogl] deprecate cogl_viewport() in favour of cogl_set_viewport()
cogl_viewport only accepted a viewport width and height, but there are times
when it's also desireable to have a viewport offset so that a scene can be
translated after projection but before hitting the framebuffer.
2009-11-04 03:23:21 +00:00
Robert Bragg
1e2d88e789 [cogl_read_pixels] use buffer not viewport height to calculate y offset
glReadPixel takes window coordinates not viewport coordinates so we
shouldn't have been assuming that the viewport height == window height.
2009-11-04 03:23:20 +00:00
Robert Bragg
e1630be35a [draw-buffer] Adds cogl_draw_buffer_get_{width,height} API
Simply adds missing API to query the width and height of any Cogl draw buffer.
2009-11-04 03:23:20 +00:00
Robert Bragg
12af275139 [cogl] Make sure Cogl always knows the current window geometry
Because Cogl defines the origin of viewport and window coordinates to be
top-left it always needs to know the size of the current window so that Cogl
window/viewport coordinates can be transformed into OpenGL coordinates.

This also fixes cogl_read_pixels to use the current draw buffer height
instead of the viewport height to determine the OpenGL y coordinate to use
for glReadPixels.
2009-11-04 03:23:20 +00:00
Robert Bragg
e3391b0173 [cogl] Make sure we draw upside down to offscreen draw buffers
First a few notes about Cogl coordinate systems:
- Cogl defines the window origin, viewport origin and texture coordinates
origin to be top left unlike OpenGL which defines them as bottom left.
- Cogl defines the modelview and projection identity matrices in exactly the
same way as OpenGL.
- I.e. we believe that for 2D centric constructs: windows/framebuffers,
viewports and textures developers are more used to dealing with a top left
origin, but when modeling objects in 3D; an origin at the center with y
going up is quite natural.

The way Cogl handles textures is by uploading data upside down in OpenGL
terms so that bottom left becomes top left.  (Note: This also has the
benefit that we don't need to flip the data we get from image decoding
libraries since they typically also consider top left to be the image
origin.)

The viewport and window coords are mostly handled with various y =
height - y tweaks before we pass y coordinates to OpenGL.

Generally speaking though the handling of coordinate spaces in Cogl is a bit
fragile.  I guess partly because none of it was design to be, it just
evolved from how Clutter defines its coordinates without much consideration
or testing.  I hope to improve this over a number of commits; starting here.

This commit deals with the fact that offscreen draw buffers may be bound to
textures but we don't "upload" the texture data upside down, and so if you
texture from an offscreen draw buffer you need to manually flip the texture
coordinates to get it the right way around.  We now force offscreen
rendering to be flipped upside down by tweaking the projection matrix right
before we submit it to OpenGL to scale y by -1.  The tweak is entirely
hidden from the user such that if you call cogl_get_projection you will not
see this scale.
2009-11-04 03:23:19 +00:00
Robert Bragg
8b4c496f2a [cogl] Ensure features are initialized first in cogl_create_context
Previously some context initializing was being done without valid feature
flags.
2009-11-04 03:23:19 +00:00
Robert Bragg
419db4dcfb [clip-stack] Handle flipped rectangles in try_pushing_rect_as_window_rect()
We were ignoring the possibility that the current modelview matrix may flip
the incoming rectangle in which case we didn't calculate a valid scissor
rectangle for clipping.

This fixes: http://bugzilla.o-hand.com/show_bug.cgi?id=1809
(Clipping doesn't work within an FBO)
2009-11-04 03:23:19 +00:00
Robert Bragg
f7d64e5abd [draw-buffers] First pass at overhauling Cogl's framebuffer management
Cogl's support for offscreen rendering was originally written just to support
the clutter_texture_new_from_actor API and due to lack of documentation and
several confusing - non orthogonal - side effects of using the API it wasn't
really possible to use directly.

This commit does a number of things:
- It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h}
  files instead which should be easier to maintain.
- internally CoglFbo objects are now called CoglDrawBuffers. A
  CoglDrawBuffer is an abstract base class that is inherited from to
  implement CoglOnscreen and CoglOffscreen draw buffers.  CoglOffscreen draw
  buffers will initially be used to support the
  cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will
  start to be used internally to represent windows as we aim to migrate some
  of Clutter's backend code to Cogl.
- It makes draw buffer objects the owners of the following state:
  - viewport
  - projection matrix stack
  - modelview matrix stack
  - clip state
(This means when you switch between draw buffers you will automatically be
 switching to their associated viewport, matrix and clip state)

Aside from hopefully making cogl_offscreen_new_to_texture be more useful
short term by having simpler and well defined semantics for
cogl_set_draw_buffer, as mentioned above this is the first step for a couple
of other things:
- Its a step toward moving ownership for windows down from Clutter backends
  into Cogl, by (internally at least) introducing the CoglOnscreen draw
  buffer.  Note: the plan is that cogl_set_draw_buffer will accept on or
  offscreen draw buffer handles, and the "target" argument will become
  redundant since we will instead query the type of the given draw buffer
  handle.
- Because we have a common type for on and offscreen framebuffers we can
  provide a unified API for framebuffer management. Things like:
  - blitting between buffers
  - managing ancillary buffers (e.g. attaching depth and stencil buffers)
  - size requisition
  - clearing
2009-11-03 17:23:03 +00:00
Robert Bragg
ad98e96d97 [cogl-fbo] Bring the gles code more in line with gl code
Over time the two cogl-fbo.c files have needlessly diverged as bug fixes or
cleanups went into one version but not the other.  This tries to bring them
back in line with each other.  It should actually be simple enough to move
cogl-fbo.c to be a common file, and simply not build it for GLES 1.1, so
maybe I'll follow up with such a patch soon.
2009-11-02 16:55:02 +00:00
Robert Bragg
613977f710 [cogl-fbo] Remove poorly documented workaround for unknown driver/hardware
The comment just said: "Some implementation require a clear before drawing
to an fbo.  Luckily it is affected by scissor test." and did a scissored
clear, which is clearly a driver bug workaround, but for what driver?  The
fact that it was copied into the gles backend (or vica versa is also
suspicious since it seems unlikely that the workaround is necessary for both
backends.)

We can easily restore the workaround with a better comment if this problem
really still exists on current drivers, but for now I'd rather minimize
hand-wavey workaround code that can't be tested.
2009-11-02 16:55:02 +00:00
Emmanuele Bassi
f6e0e48ac6 build: Add missing gles/cogl-context-driver.h to dist
The gles/cogl-context-driver.h header file is missing from the
dist target, which means it's not in the tarballs.
2009-10-30 12:11:19 +00:00
Neil Roberts
f8e6727e74 [cogl_polygon] Enable COGL_ENABLE_BLEND when use_color is set
Otherwise you can't use the alpha channel of the vertex colors unless
the material has a texture with alpha or the material's color has
alpha less than 255.
2009-10-27 13:18:51 +00:00
Neil Roberts
0c32573ffa build: Add $(top_buiddir)/clutter/cogl to the include path in clutter/cogl/cogl
Some files try to include "cogl/cogl-defines-gl.h" so
$(top_builddir)/clutter/cogl needs to be in the include path for out of
tree builds to work.
2009-10-27 12:53:57 +00:00
Emmanuele Bassi
924780ce35 cogl: Avoid C99-isms
Do not declare variables after statements.
2009-10-23 16:44:28 +01:00
Emmanuele Bassi
b56b26cc62 cogl: Remove cogl-current-matrix.c
The cogl-current-matrix.c file is unused since commit
5e5d94dfbe and it's not compiled
or distributed anymore.
2009-10-23 15:46:25 +01:00
Emmanuele Bassi
24594bcde4 build: Make COGL pass distcheck
Some changes to make COGL pass distcheck with Automake 1.11 and
anal-retentiveness turned up to 11.

The "major" change is the flattening of the winsys/ part of COGL,
which is built directly inside libclutter-cogl.la instead of an
intermediate libclutter-cogl-winsys.la object.

Ideally, the whole COGL should be flattened out using a
quasi-non-recursive Automake layout; unfortunately, the driver/
sub-section ships with identical targets and Automake cannot
distinguish GL and GLES objects.
2009-10-23 13:38:40 +01:00
Neil Roberts
f028744706 Fix some compilation errors in cogl-gles2-wrapper.c
The changes in 74f2122b6 introduced some syntax errors which were
preventing the GLES2 backend from compiling.
2009-10-22 18:04:59 +01:00
Neil Roberts
b82f874b46 Remove cogl/{gl,gles}/Makefile.am
These are no longer used anywhere.
2009-10-22 15:39:30 +01:00
Robert Bragg
74f2122b68 [gles2] remove lots of redundant matrix stack code
Since we no longer depend on the GL matrix API in Cogl we can remove a lot
of wrapper code from the GLES 2 backend.  This is particularly nice given
that there was no code shared between the cogl-matrix-stack API and gles2
wrappers so we had a lot of duplicated logic.
2009-10-20 12:32:51 +01:00
Robert Bragg
5e5d94dfbe [cogl] Removes the cogl-current-matrix abstraction
The indirection through this API isn't necessary since we no longer
arbitrate between the OpenGL matrix API and Cogl's client side API.  Also it
doesn't help to maintain an OpenGL style matrix mode API for internal use
since it's awkward to keep restoring the MODELVIEW mode and easy enough to
directly work with the matrix stacks of interest.

This replaces use of the _cogl_current_matrix API with direct use of the
_cogl_matrix_stack API.  All the unused cogl_current_matrix API is removed
and the matrix utility code left in cogl-current-matrix.c was moved to
cogl.c.
2009-10-20 12:32:50 +01:00
Robert Bragg
9f7bf9fb4d [matrix-stack] Adds ctx->flushed_matrix_mode to cache the gl matrix mode
This cache of the gl matrix mode lets us avoid repeat calls to glMatrixMode
in _cogl_matrix_stack_flush_to_gl when we have lots of sequential modelview
matrix modifications.
2009-10-20 12:32:50 +01:00
Robert Bragg
b1f9f0a97d matrix-stack: more optimization for load_identity case
This goes a bit further than the previous patch, and as a special case
we now simply represent identity matrices using a boolean, and only
lazily initialize them when they need to be modified.
2009-10-20 12:32:50 +01:00
Robert Bragg
460025d603 [matrix-stack] avoid redundant clearing of matrix when using load_identity
The journal always uses an identity matrix since it uses software
transformation.  Currently it manually uses glLoadMatrix since previous
experimentation showed that the cogl-matrix-stack gave bad performance, but
it would be nice to fix performance so we only have to care about one path
for loading matrices.

For the common case where we do:
cogl_matrix_stack_push()
cogl_matrix_stack_load_identity()
we were effectively initializing the matrix 3 times. Once due to use of
g_slice_new0, then we had a cogl_matrix_init_identity in
_cogl_matrix_state_new for good measure, and then finally in
cogl_matrix_stack_load_identity we did another cogl_matrix_init_identity.

We don't use g_slice_new0 anymore, _cogl_matrix_state_new is documented as
not initializing the matrix (instead _cogl_matrix_stack_top_mutable now
takes a boolean to choose if new stack entries should be initialised) and so
we now only initialize once in cogl_matrix_stack_load_identity.
2009-10-20 12:32:49 +01:00
Robert Bragg
2656b569b9 [current-matrix] Adds texture matrix stacks + removes GL matrix API usage
This relates back to an earlier commitment to stop using the OpenGL matrix
API which is considered deprecated. (ref 54159f5a1d)

The new texture matrix stacks are hung from a list of (internal only)
CoglTextureUnit structures which the CoglMaterial code internally references
via _cogl_get_texure_unit ().

So we would be left with only the cogl-matrix-stack code being responsible
for glMatrixMode, glLoadMatrix and glLoadIdentity this commit updates the
journal code so it now uses the matrix-stack API instead of GL directly.
2009-10-20 12:32:45 +01:00
Robert Bragg
ef9ea9e237 [cogl-primitives] Split the journal out from cogl-primitives.c
The Journal can be considered a standalone component, so even though
it's currently only used to log quads, it seems better to split it
out into its own file.
2009-10-16 18:58:52 +01:00
Robert Bragg
2f628b1a8a [cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced
When we implement atlas textures we will probably want to use the spans API
to handle texture repeating so it doesn't make sense to leave the code in
cogl-texture-2d-sliced.c.  Since it's a standalone set of data structures
and algorithms it also seems reasonable to split out from cogl-texture.
2009-10-16 18:58:52 +01:00
Vladimir Nadvornik
568d684187 [cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced
cogl-texture-2d-sliced provides an implementation of CoglTexture and this
seperation lays the foundation for potentially supporting atlas textures,
pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path
GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-10-16 18:58:51 +01:00
Robert Bragg
9da26fc1ca [cogl-texture] Seal CoglTexture internals from cogl-primitives.c
cogl-primitives.c was previously digging right into CoglTextures so it could
manually iterate the texture slices for texturing quads and polygons and
because we were missing some state getters we were lazily just poking into
the structures directly.

This adds some extra state getter functions, and adds a higher level
_cogl_texture_foreach_slice () API that hopefully simplifies the way in
which sliced textures may be used to render primitives.  This lets you
specify a rectangle in "virtual" texture coords and it will call a given
callback for each slice that intersects that rectangle giving the virtual
coords of the current slice and corresponding "real" texture coordinates for
the underlying gl texture.

At the same time a noteable bug in how we previously iterated sliced
textures was fixed, whereby we weren't correctly handling inverted texture
coordinates.  E.g.  with the previous code if you supplied texture coords of
tx1=100,ty1=0,tx2=0,ty2=100 (inverted along y axis) that would result in a
back-facing quad, which could be discarded if using back-face culling.
2009-10-16 18:58:51 +01:00
Robert Bragg
52cecd50ec [docs] switch gl_handle+gl_target docs for cogl_texture_new_from_foreign
The descriptions for gl_handle and gl_target were inverted.

Thanks to Young-Ho Cha for spotting that.

Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-10-16 18:58:51 +01:00
Robert Bragg
95a869dab1 [cogl] move clutter/pango to clutter/cogl/pango
As part of the re-organisation of Cogl; move clutter/pango to be part of the
cogl sub-project.
2009-10-16 18:58:51 +01:00
Robert Bragg
43efab46bc Intial Re-layout of the Cogl source code and introduction of a Cogl Winsys
As part of an incremental process to have Cogl be a standalone project we
want to re-consider how we organise the Cogl source code.

Currently this is the structure I'm aiming for:
cogl/
    cogl/
	<put common source here>
	winsys/
	   cogl-glx.c
	   cogl-wgl.c
	driver/
	    gl/
	    gles/
	os/ ?
    utils/
	cogl-fixed
	cogl-matrix-stack?
        cogl-journal?
        cogl-primitives?
    pango/

The new winsys component is a starting point for migrating window system
code (i.e.  x11,glx,wgl,osx,egl etc) from Clutter to Cogl.

The utils/ and pango/ directories aren't added by this commit, but they are
noted because I plan to add them soon.

Overview of the planned structure:

* The winsys/ API is the API that binds OpenGL to a specific window system,
  be that X11 or win32 etc.  Example are glx, wgl and egl. Much of the logic
  under clutter/{glx,osx,win32 etc} should migrate here.

* Note there is also the idea of a winsys-base that may represent a window
  system for which there are multiple winsys APIs.  An example of this is
  x11, since glx and egl may both be used with x11.  (currently only Clutter
  has the idea of a winsys-base)

* The driver/ represents a specific varient of OpenGL. Currently we have "gl"
  representing OpenGL 1.4-2.1 (mostly fixed function) and "gles" representing
  GLES 1.1 (fixed funciton) and 2.0 (fully shader based)

* Everything under cogl/ should fundamentally be supporting access to the
  GPU.  Essentially Cogl's most basic requirement is to provide a nice GPU
  Graphics API and drawing a line between this and the utility functionality
  we add to support Clutter should help keep this lean and maintainable.

* Code under utils/ as suggested builds on cogl/ adding more convenient
  APIs or mechanism to optimize special cases. Broadly speaking you can
  compare cogl/ to OpenGL and utils/ to GLU.

* clutter/pango will be moved to clutter/cogl/pango

How some of the internal configure.ac/pkg-config terminology has changed:
backendextra -> CLUTTER_WINSYS_BASE # e.g. "x11"
backendextralib -> CLUTTER_WINSYS_BASE_LIB # e.g. "x11/libclutter-x11.la"
clutterbackend -> {CLUTTER,COGL}_WINSYS # e.g. "glx"
CLUTTER_FLAVOUR -> {CLUTTER,COGL}_WINSYS
clutterbackendlib -> CLUTTER_WINSYS_LIB
CLUTTER_COGL -> COGL_DRIVER # e.g. "gl"

Note: The CLUTTER_FLAVOUR and CLUTTER_COGL defines are kept for apps

As the first thing to take advantage of the new winsys component in Cogl;
cogl_get_proc_address() has been moved from cogl/{gl,gles}/cogl.c into
cogl/common/cogl.c and this common implementation first trys
_cogl_winsys_get_proc_address() but if that fails then it falls back to
gmodule.
2009-10-16 18:58:50 +01:00
Robert Bragg
2eea83de75 Make the CoglContext structure a bit more maintainable
This moves most of cogl-context.{c.h} to cogl/common with some driver
specific members now living in a CoglContextDriver struct.  Driver specific
context initialization and typedefs now live in
cogl/{gl,gles}/cogl-context-driver.{c,h}

Driver specific members can be found under ctx->drv.stuff
2009-10-16 18:58:49 +01:00
Robert Bragg
157eb437ba Improve cogl-texture maintainability by moving 90% into cogl/common
This splits the limited components that differed between
cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files
and the rest that can now be shared into cogl/common/cogl-texture.c
2009-10-16 18:58:49 +01:00
Robert Bragg
ab76d64df0 [cogl-debug] avoid warnings when using COGL_NOTE with unbraced else clauses
When not building a debug build the compiler was warning about empty
else clauses with no braces due to code like:
  if (blah)
	do_foo();
  else
	COGL_NOTE (DRAW, "a-wibble");

This simply ensures that even for non debug builds COGL_NOTE will expand to
a single statement.
2009-09-24 21:41:50 +01:00
Robert Bragg
904c495c6d [cogl-vertex-buffer] fix n_components validation for GL's builtin attributes
glVertexPointer expects positions with 2, 3 or 4 components, glColorPointer
expects colors with 3 or 4 components and glNormalPointer expects normals
with three components so when adding vertex buffer atributes with the names
"gl_Vertex", "gl_Color" or "gl_Normal" we assert these constraints and print
an explanation to the developer if not met.

This also fixes the previosly incorrect constraint that gl_Normal attributes
must have n_components == 1; thanks to Cat Sidhe for reporting this:

Bug: http://bugzilla.openedhand.com/show_bug.cgi?id=1819
2009-09-24 21:41:50 +01:00
Damien Lespiau
6e50e26c86 Add a few annotations on Cogl primitives functions
By default, float * is considered as an out argument by gobject
introspection which is wrong for quite a few Cogl symbols. Start adding
annotations to fix that for the ones in the "Primitives" gtk-doc
section.
2009-09-21 18:40:20 +01:00
Neil Roberts
1c3d5a0e87 [cogl] Remove CoglContext->journal_vbo{,_len}
The lifetime of the journal VBO is entirely within the scope of the
cogl_journal_flush function so there is no need to store it globally
in the Cogl context. Instead, upload_vertices_to_vbo just returns the
new VBO. cogl_journal_flush stores this in a local variable and
destroys it before returning.

This also fixes an assertion when using the GLES backend which was
caused by nothing initialising the journal_vbo variable.
2009-09-17 18:30:55 +01:00
Emmanuele Bassi
ecfa0c4f92 [build] Split out the custom silent rules
The silent rules we use for custom targets should be moved into a
separate Makefile.am that gets included from all the others.
2009-09-16 17:47:59 +01:00
Robert Bragg
0d08f6e070 [cogl-fbo] Disable mipmap filters before calling glCheckFramebufferStatusEXT
The framebuffer_object spec isn't clear in defining whether attaching a
texture as a renderbuffer with mipmap filtering enabled while the mipmaps
have not been uploaded should result in an incomplete framebuffer object.
(different drivers make different decisions)

To avoid an error with drivers that do consider this a problem we explicitly
set non mipmapped filters before calling glCheckFramebufferStatusEXT.  The
filters will later be reset when the texture is actually used for rendering
according to the filters set on the corresponding CoglMaterial.
2009-09-15 17:54:07 +01:00
Emmanuele Bassi
742cc4d95b [docs] Small annotation fixes 2009-09-08 10:21:46 +01:00
Samuel Degrande
763f5a9d01 DOT3_RGB[A] cannot be used in a Blend String
The blend string compiler checks that the syntax of a function name is
[A-Za-z_]*, preventing the use of DOT3_RGB[A].

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-09-02 16:27:22 +01:00
Neil Roberts
4ca375e8fe [cogl-texture] Set GL_PACK_ROW_LENGTH when downloading texture data
Otherwise the rowstride passed in from an application is not used
correctly so you can not download to an area with a much larger
rowstride.
2009-08-24 12:50:57 +01:00
Robert Bragg
56daae9d7b Revert "[cogl] Allow Cogl to create NPOT textures for GLES2"
This reverts commit 3c47a3beb5.

Of course I remembered just after pushing the patch why we hadn't done
this before :-) If you look in the glsl spec:
http://www.khronos.org/registry/gles/specs/2.0/es_full_spec_2.0.24.pdf
Section 3.7.10 Texture Completeness and Non-Power-Of-Two Textures
you can see GLES 2.0 doesn't support mipmaps for npot textures.

There is possibly some way we could support this in Cogl but at least
it's not as simple as or-ing in the feature flag, sadly.
2009-08-20 12:53:32 +01:00
Robert Bragg
3c47a3beb5 [cogl] Allow Cogl to create NPOT textures for GLES2
The core GLES2 API supports NPOT textures, i.e. there is no extension as for
OpenGL, so we now add COGL_FEATURE_TEXTURE_NPOT to the feature flags in
_cogl_features_init.

Thanks to Gordon Williams for spotting this.
2009-08-20 12:17:56 +01:00
Robert Bragg
a5fe4ae4ec [cogl] %.c: %.glsl codegen: use BUILT_SOURCES var + fix stringify.sh
Don't let stringify.sh write to the $srcdir + use the BUILT_SOURCES var in
Makefile.am so as to ensure all .c.  and .h files get generated from their
corresponding .glsl files before building other targets.
2009-08-19 15:43:20 +01:00
Emmanuele Bassi
373b165b3f Use AM_SILENT_RULES if automake >= 1.11 is installed
Fixes bug:

  http://bugzilla.openedhand.com/show_bug.cgi?id=1756

Based on a patch by: Javier Jardón <javierjc1982@gmail.com>
2009-08-19 13:42:36 +01:00
Robert Bragg
9befb055d0 [cogl-material] Fix some brackets in _layer_flush_gl_sampler_state
The wrong part of an expression was bracketed in the test to determine
when a new texture matrix needed to be loaded which resulted in the
first pass through _cogl_material_layer_flush_gl_sampler_state
not uploading any user matrix.
2009-08-18 16:57:38 +01:00
Emmanuele Bassi
366e0725ce [docs] texture_polygon() is called polygon()
Remove the mentions to the old name of cogl_polygon().
2009-08-18 11:11:29 +01:00
Götz Waschk
366e0f9cd7 Update Clutter to use G-I 0.6.4
Following bug #1762, the syntax of g-ir-scanner was changed in
gobject-introspection, so Clutter does not build anymore with 0.6.4.

See the bugzilla bug:

  http://bugzilla.gnome.org/show_bug.cgi?id=591669

GObject-Introspection now uses a different mechanism to extract the
SONAME when building the gir file and it needs the libtool archive as
option.

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-08-17 14:14:18 +01:00
zhou jiangwei
2ab9bef587 [cogl] Fix the GLES 2.0 backend
Update the GLES 2.0 backend to the new COGL API after the breakage
introduced by the journal.

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-08-11 14:19:24 +01:00
Robert Bragg
dbfd3f0f44 [cogl_clear] Also pass the alpha component of the CoglColor to glClearColor
Previously we were passing a constant of 0.0 for the alpha component which
wasn't as flexible.
2009-08-11 14:15:44 +01:00
Emmanuele Bassi
79288b46ed [docs] Fix a missing parameter 2009-08-04 11:38:48 +01:00
Emmanuele Bassi
f8a964b422 [cogl] Expose cogl_is_vertex_buffer()
The function is public and available in the shared object, but
it's not present in the header, so this is not an API/ABI change.
2009-08-04 11:15:05 +01:00
Emmanuele Bassi
77fdd7494e Fix compiler warnings when COGL debug level=minimum 2009-07-28 13:57:46 +01:00
Ole André Vadla Ravnås
a1cef026c5 Avoid near/far identifier names.
Leads to conflict with system headers on Windows, where macros named
"near" and "far" are defined.
2009-07-28 12:13:44 +01:00
Ole André Vadla Ravnås
0157851270 Call glClientActiveTexture() through COGL context.
Fixes build issues on systems with OpenGL header older than 1.3.
2009-07-28 12:13:43 +01:00
Ole André Vadla Ravnås
f61f66c6fe Avoid C99 to fix compilation with compilers like MSVC. 2009-07-28 12:13:43 +01:00
Haakon Sporsheim
e4eed92177 Reposition variable declarations to avoid C99. 2009-07-28 12:13:42 +01:00
Emmanuele Bassi
b1d98c25f4 [doc] Miscellaneous documentation fixes
Remove private symbols, and add missing public ones.
2009-07-20 12:49:35 +01:00
Emmanuele Bassi
cdb239756b [cogl] Make the blend string error domain public
The error domain and codes must present in a publicly installed header
otherwise they won't be usable to match a GError.
2009-07-20 12:47:53 +01:00
Robert Bragg
da37e1e27d [doc] Remove references to cogl_vertex_buffer_delete_indices
These referencese were left over from before indices got CoglHandles to
uniquely identify them.  cogl_handle_unref can be used to delete indices
now.
2009-07-19 10:23:00 +01:00
Emmanuele Bassi
dc0b1cddf5 [cogl/gles] Fix missing symbols in CoglContext
Keep the CoglContext in sync between GL and GLES backends. We ought
to find a way to have a generic context, though, and have backend
specific sections.

Fixes bug:

  http://bugzilla.openedhand.com/show_bug.cgi?id=1698
2009-07-18 16:59:54 +01:00
Owen W. Taylor
7654ef10ab Fix building introspection when dolt is not in use
On some platforms (anything but Linux, and on obscure Linux
architectures) dolt isn't used, so $(top_builddir)/doltlibtool
won't exist. $(top_builddir)/libtool will always be generated
even if dolt is used, so just use that unconditionally. We don't
need the extra speed when linking the single program for
introspection.

http://bugzilla.openedhand.com/show_bug.cgi?id=1699

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-07-18 16:52:57 +01:00
Evan Martin
ea56a5e7a8 [docs] Fix typos and remove mentions of SVN
Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-07-12 01:38:40 +01:00
Robert Bragg
1920b03381 [cogl] Fix more brokeness with _cogl_material_equal
commit e2c4a2a9f8 fixed one thing but broke many others things :-/
hopfully this fixes that.

It turned out that the journal was mistakenly setting the OVERRIDE_LAYER0
flush option for all entries, but some other logic errors were also
uncovered in _cogl_material_equal.
2009-07-10 19:00:16 +01:00
Robert Bragg
e2c4a2a9f8 [cogl] Fix drawing with sliced textures using material layer0 overrides
To help us handle sliced textures; When flushing materials there is an
override option that can be given to replace the texture name for layer0
so we may iterate the slices without needing to modify the material
in use.

Since improving the journal's ability to batch state changes we added a
_cogl_material_equals function that is used by the journal to compare
materials and identify when a state change is required, but this wasn't
correctly considering the layer0 override resulting in false positives that
meant the journal wouldn't update the GL state and the first texture name
was used for all slices.
2009-07-07 10:34:37 +01:00
Robert Bragg
df4429462f [cogl matrix stack] Create a client side matrix stack for the projection matrix
The cost of glGetFloatv with Mesa is still representing a majority of our
time in OpenGL for some applications, and the last thing left using this is
the current-matrix API when getting the projection matrix.

This adds a matrix stack for the projection matrix, so all getting, setting
and modification of the projection matrix is now managed by Cogl and it's only
when we come to draw that we flush changes to the matrix to OpenGL.

This also brings us closer to being able to drop internal use of the
deprecated OpenGL matrix functions, re: commit 54159f5a1d
2009-07-07 10:32:56 +01:00
Emmanuele Bassi
0414daf0fb Split the typdef to avoid confusing scanners
Scanners like gtk-doc and g-ir-scanner get confused by:

  typedef struct _Foo {
    ...
  } Foo;

And expect instead:

  typedef struct _Foo Foo;

  struct _Foo {
    ...
  };

CoglMatrix definition should be changed to avoid the former type.
2009-07-01 15:30:21 +01:00
Emmanuele Bassi
3726213291 Add debug notes for calls to glViewport()
In order to validate the sequence of:

        XResizeWindow
        ConfigureNotify
        glViewport

that should happen on X11 we need to add debug annotations to the
calls to glViewport() done through COGL.
2009-07-01 15:30:18 +01:00
Robert Bragg
3bab787103 [cogl] cache the viewport width and height
This avoids some calls to glGetFloatv, which have at least proven to be very
in-efficient in mesa at this point in time, since it always updates all derived
state even when it may not relate to the state being requested.
2009-07-01 15:23:10 +01:00
Robert Bragg
358d7c30dc [cogl] Ensure well defined semantics for COGL_INVALID_HANDLE material layers
Fixes and adds a unit test for creating and drawing using materials with
COGL_INVALID_HANDLE texture layers.

This may be valid if for example the user has set a texture combine string
that only references a constant color.

_cogl_material_flush_layers_gl_state will bind the fallback texture for any
COGL_INVALID_HANDLE layer, later though we could explicitly check when the
current blend mode does't actually reference a texture source in which case
binding the fallback texture is redundant.

This tests drawing using cogl_rectangle, cogl_polygon and
cogl_vertex_buffer_draw.
2009-06-30 17:35:07 +01:00
Robert Bragg
33400c0aae [cogl] Improve ability to break out into raw OpenGL via begin/end mechanism
Although we wouldn't recommend developers try and interleve OpenGL drawing
with Cogl drawing - we would prefer patches that improve Cogl to avoid this
if possible - we are providing a simple mechanism that will at least give
developers a fighting chance if they find it necissary.

Note: we aren't helping developers change OpenGL state to modify the
behaviour of Cogl drawing functions - it's unlikley that can ever be
reliably supported - but if they are trying to do something like:

   - setup some OpenGL state.
   - draw using OpenGL (e.g. glDrawArrays() )
   - reset modified OpenGL state.
   - continue using Cogl to draw

They should surround their blocks of raw OpenGL with cogl_begin_gl() and
cogl_end_gl():

   cogl_begin_gl ();
   - setup some OpenGL state.
   - draw using OpenGL (e.g. glDrawArrays() )
   - reset modified OpenGL state.
   cogl_end_gl ();
   - continue using Cogl to draw

Again; we aren't supporting code like this:
   - setup some OpenGL state.
   - use Cogl to draw
   - reset modified OpenGL state.
When the internals of Cogl evolves, this is very liable to break.

cogl_begin_gl() will flush all internally batched Cogl primitives, and emit
all internal Cogl state to OpenGL as if it were going to draw something
itself.

The result is that the OpenGL modelview matrix will be setup; the state
corresponding to the current source material will be setup and other world
state such as backface culling, depth and fogging enabledness will be also
be sent to OpenGL.

Note: no special material state is flushed, so if developers want Cogl to setup
a simplified material state it is the their responsibility to set a simple
source material before calling cogl_begin_gl. E.g. by calling
cogl_set_source_color4ub().

Note: It is the developers responsibility to restore any OpenGL state that they
modify to how it was after calling cogl_begin_gl() if they don't do this then
the result of further Cogl calls is undefined.
2009-06-30 17:13:38 +01:00
Robert Bragg
6d9498da7c Adds a cogl_flush() to give developers breaking into raw GL a fighting chance
This function should only need to be called in exceptional circumstances
since Cogl can normally determine internally when a flush is necessary.

As an optimization Cogl drawing functions may batch up primitives
internally, so if you are trying to use raw GL outside of Cogl you stand a
better chance of being successful if you ask Cogl to flush any batched
geometry before making your state changes.

cogl_flush() ensures that the underlying driver is issued all the commands
necessary to draw the batched primitives.  It provides no guarantees about
when the driver will complete the rendering.

This provides no guarantees about the GL state upon returning and to avoid
confusing Cogl you should aim to restore any changes you make before
resuming use of Cogl.

If you are making state changes with the intention of affecting Cogl drawing
primitives you are 100% on your own since you stand a good chance of
conflicting with Cogl internals.  For example clutter-gst which currently
uses direct GL calls to bind ARBfp programs will very likely break when Cogl
starts to use ARBfb programs internally for the material API, but for now it
can use cogl_flush() to at least ensure that the ARBfp program isn't applied
to additional primitives.

This does not provide a robust generalized solution supporting safe use of
raw GL, its use is very much discouraged.
2009-06-30 17:13:38 +01:00
Robert Bragg
87f99e214a [cogl-material] Be more carefull about flushing in cogl_material_remove_layer
Previously we would call _cogl_material_pre_change_notify unconditionally, but
now we wait until we really know we are removing a layer before notifying the
change, which will require a journal flush.

Since the convenience functions cogl_set_source_color4ub and
cogl_set_source_texture share a single material, cogl_set_source_color4ub
always calls cogl_material_remove_layer.  Often this is a NOP though and
shouldn't require a journal flush.

This gets performance back to where it was before reverting the per-actor
material commits.
2009-06-30 17:13:38 +01:00
Robert Bragg
8b67916cc1 [cogl-vertex-buffer] Disable unused client tex coord arrays
Before any cogl vertex buffer drawing we call
enable_state_for_drawing_buffer which sets up the GL state, but we weren't
disabling unsed client texture coord arrays.
2009-06-30 17:13:37 +01:00
Robert Bragg
8873c6a11a [cogl] disable all client tex coord arrays in _cogl_add_path_to_stencil_buffer
After flushing the journal an unknown number of client side texture arrays
may be left enabled. Disable them all before using glDrawArrays.
2009-06-30 17:13:37 +01:00
Robert Bragg
ca0a0e9dac [cogl] flush matrices in _cogl_add_path_to_stencil_buffer
Before calling glRectf we need to ensure we flush the modelview and
projection matrices.
2009-06-30 17:13:37 +01:00
Robert Bragg
f386b1f002 [journal] Don't resize a singlton VBO; create and destroy a VBO each flush
This simplifies the vertex data uploading in the journal, and could improve
performance.  Modifying a VBO mid-scene could reqire synchronizing with the
GPU or some form of shadowing/copying to avoid modifying data that the GPU
is currently processing; the buffer was also being marked as GL_STATIC_DRAW
which could have made things worse.

Now we simply create a GL_STATIC_DRAW VBO for each flush and and delete it
when we are finished.
2009-06-30 17:13:37 +01:00
Robert Bragg
7b7787b050 [cogl] avoid using the journal in _cogl_add_path_to_stencil_buffer
Using cogl_rectangle (and thus the journal) in
_cogl_add_path_to_stencil_buffer means we have to consider all the state
that the journal may change in case it may interfer with the direct GL calls
used.  This has proven to be error prone and in this case the journal is an
unnecissary overhead.  We now simply call glRectf instead of using
cogl_rectangle.
2009-06-30 17:13:37 +01:00
Robert Bragg
6ac3b5a564 [material] _cogl_material_equal: catch the simplest case of matching handles
We were missing the simplest test of all: are the two CoglHandles equal and
are the flush option flags for each material equal?  This should improve
batching for some common cases.
2009-06-30 17:13:36 +01:00
Robert Bragg
9afa52f056 [material] avoid flushing the journal when just changing the color
Whenever we modify a material we call _cogl_material_pre_change_notify which
checks to see if the material is referenced by the journal and if so flushes
if before we modify the material.

Since the journal logs material colors directly into a vertex array (to
avoid us repeatedly calling glColor) then we know we never need to flush
the journal when material colors change.
2009-06-30 17:13:36 +01:00
Robert Bragg
efbf483d8c [cogl journal] Perform software modelview transform on logged quads.
Since most Clutter actors aren't much more than textured quads; flushing the
journal typically involves lots of 'change modelview; draw quad' sequences.

The amount of overhead involved in uploading a new modelview and queuing
that primitive is huge in comparison to simply transforming 4 vertices by
the current modelview when logging quads.  (Note if your GPU supports HW
vertex transform, then it still does the projective and viewport transforms)

At the same time a --cogl-debug=disable-software-transform option has been
added for comparison and debugging.

This change allows typical pick scenes to be batched into a single draw call
and I'm seeing test-pick run over 200% faster with this.  (i965 + Mesa
7.6-devel)
2009-06-30 17:13:36 +01:00
Robert Bragg
612a1e2dea [Cogl journal] use G_UNLIKLEY around runtime debugging conditions
May as well improve the branch prediction around runtime debugging code.
2009-06-30 17:13:36 +01:00
Robert Bragg
7d1876fd26 [cogl journal] Adds a --cogl-debug=batching option to trace batching
Enabling this option makes Cogl trace how the journal is managing to batch
your rectangles.  The journal staggers how it emmits state to the GL driver
and the batches will normally get smaller for each stage, but ideally you
don't want to be in a situation where Cogl is only able to draw one quad per
modelview change and draw call.

E.g. this is a fairly ideal example:
BATCHING: journal len = 101
BATCHING:  vbo offset batch len = 101
BATCHING:   material batch len = 101
BATCHING:    modelview batch len = 101

This isn't:
BATCHING: journal len = 1
BATCHING:  vbo offset batch len = 1
BATCHING:   material batch len = 1
BATCHING:    modelview batch len = 1
BATCHING: journal len = 1
BATCHING:  vbo offset batch len = 1
BATCHING:   material batch len = 1
BATCHING:    modelview batch len = 1
<repeat>
2009-06-30 17:13:36 +01:00
Robert Bragg
d03e6cfb2c [Cogl journal] Adds a --cogl-debug=journal option for tracing the journal
When this option is used Cogl will print a trace of all quads that get
logged into the journal, and a trace of quads as they get flushed.

If you are seeing a bug with the geometry being drawn by Cogl this may give
some clues by letting you sanity check the numbers being logged vs the
numbers being emitted.
2009-06-30 17:13:35 +01:00
Robert Bragg
3ea7816499 [cogl] Adds a debug option for disabling use of VBOs --cogl-debug=disable-vbos
For testing the VBO fallback paths it helps to be able to disable the
COGL_FEATURE_VBOS feature flag.  When VBOs aren't available Cogl should use
client side malloc()'d buffers instead.
2009-06-30 17:13:35 +01:00
Robert Bragg
54159f5a1d [cogl] Force Cogl to always use the client side matrix stack
Previously we only used the Cogl matrix stack API for indirect contexts, but
it's too costly to keep on requesting modelview matrices from GL (for
logging in the journal) even for direct rendering.

I also experimented with a patch for mesa to improve performance and
discussed this with upstream, but we agreed to consider the GL matrix API
essentially deprecated.  (For reference the GLES 2 and GL 3 specs have
removed the matrix APIs)
2009-06-30 17:13:35 +01:00
Robert Bragg
713af6535d [cogl-debug] Adds a "client-side-matrices" Cogl debug option
This allows us to force Cogl to use the client side matrix stack even when
direct rendering.
2009-06-30 17:13:35 +01:00
Robert Bragg
a8be68c83c [cogl-color] Adds a cogl_color_equal() function
CoglColors shouldn't be compared using memcmp since they may contain
uninitialized padding bytes.

The prototype is also suitable for passing to g_hash_table_new as the
key_equal_func.

_cogl_pango_display_list_add_texture now uses this instead of memcmp.
2009-06-30 17:13:35 +01:00
Robert Bragg
aca1bf4329 [cogl material] optimize logging of material colors in the journal
We now put the color of materials into the vertex array used by the journal
instead of calling glColor() but the number of requests for the material
color were quite expensive so we have changed the material color to
internally be byte components instead of floats to avoid repeat conversions
and added _cogl_material_get_colorubv as a fast-path for the journal to
copy data into the vertex array.
2009-06-30 17:13:35 +01:00
Robert Bragg
40cfaeaffc [journal] Always pad our vertex data as if at least 2 layers are enabled
The number of material layers enabled when logging a quad in the journal
determines the stride of the corresponding vertex data (since we need a set
of texture coordinates for each layer.) By padding data in the case where we
have only one layer we can avoid a change in stride if we are mixing single
and double layer primitives in a scene (e.g.  relevent for a composite
manager that may use 2 layers for all shaped windows) Avoiding stride
changes means we can minimize calls to gl{Vertex,Color}Pointer when flushing
the journal.

Since we need to update the texcoord pointers when the actual number of
layers changes, this adds another batch_and_call() stage to deal with
glTexCoordPointer and enabling/disabling the client arrays.
2009-06-30 17:13:34 +01:00
Robert Bragg
845ff67301 [cogl] Improving Cogl journal to minimize driver overheads + GPU state changes
Previously the journal was always flushed at the end of
_cogl_rectangles_with_multitexture_coords, (i.e.  the end of any
cogl_rectangle* calls) but now we have broadened the potential for batching
geometry.  In ideal circumstances we will only flush once per scene.

In summary the journal works like this:

When you use any of the cogl_rectangle* APIs then nothing is emitted to the
GPU at this point, we just log one or more quads into the journal.  A
journal entry consists of the quad coordinates, an associated material
reference, and a modelview matrix.  Ideally the journal only gets flushed
once at the end of a scene, but in fact there are things to consider that
may cause unwanted flushing, including:

- modifying materials mid-scene
    This is because each quad in the journal has an associated material
    reference (i.e. not copy), so if you try and modify a material that is
    already referenced in the journal we force a flush first)

    NOTE: For now this means you should avoid using cogl_set_source_color()
	      since that currently uses a single shared material. Later we
	  should change it to use a pool of materials that is recycled
	  when the journal is flushed.

- modifying any state that isn't currently logged, such as depth, fog and
  backface culling enables.

The first thing that happens when flushing, is to upload all the vertex data
associated with the journal into a single VBO.

We then go through a process of splitting up the journal into batches that
have compatible state so they can be emitted to the GPU together.  This is
currently broken up into 3 levels so we can stagger the state changes:

1) we break the journal up according to changes in the number of material layers
   associated with logged quads. The number of layers in a material determines
   the stride of the associated vertices, so we have to update our vertex
   array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc)
2) we further split batches up according to material compatability. (e.g.
   materials with different textures) We flush material state at this level.
3) Finally we split batches up according to modelview changes. At this level
   we update the modelview matrix and actually emit the actual draw command.

This commit is largely about putting the initial design in-place; this will be
followed by other changes that take advantage of the extended batching.
2009-06-30 17:13:34 +01:00
Robert Bragg
722360774c [clip-stack] Use signed integers while combining window space clip rectangles
Use signed integers while combining window space clip rectangles, so we avoid
arithmatic errors later resulting in glScissor getting negative width and
height arguments.
2009-06-30 10:16:29 +01:00
Robert Bragg
d63cda3b76 [cogl] Remove unused ctx->polygon_vertices array
This array used to be used by cogl_polygon but was changed to use
ctx->logged_vertices some time ago.
2009-06-29 23:49:07 +01:00
Robert Bragg
30f13cafc5 [cogl] Give the default (fallback) texture a format of RGBA_8888_PRE
Previously this was RGBA_8888. It souldn't really make a difference but for
consistency we expect almost all textures in use to have an internaly
premultiplied pixel format.
2009-06-29 23:49:07 +01:00
Robert Bragg
4680b34046 [cogl-texture] use the right format when downloading sliced textures from GL
_cogl_texture_download_from_gl needs to create transient CoglBitmaps when
downloading sliced textures from GL, and then copies these as subregions
into the final target_bitmap. _cogl_texture_download_from_gl also supports
target_bitmaps with a different format to the source CoglTexture being
downloaded.

The problem was that in the case of slice textures we were always looking
at the format of the CoglTexture, not of the target_bitmap when setting
up the transient slice bitmap.
2009-06-29 23:49:07 +01:00
Robert Bragg
24ca92951f [cogl] Adds cogl_read_pixels to replace direct use of glReadPixels
To allow for flushing of batched geometry within Cogl we can't support users
directly calling glReadPixels.  glReadPixels is also awkward, not least
because it returns upside down image data.

All the unit tests have been swithed over and clutter_stage_read_pixels now
sits on top of this too.
2009-06-29 23:49:06 +01:00
Robert Bragg
27fff12a6a [cogl matrix] Adds ability to dirty state cached by the client matrix apis
To be able to load matrices to GL manually within Cogl we need a way to
dirty the state cached by the client matrix stack API.
2009-06-29 23:49:06 +01:00
Robert Bragg
56bc54d242 [cogl_polygon] fixes a buffer overrun and color format bug
We were calculating our vertex stride and allocating our vertex array
differently depending on whether the user passed TRUE for use_color or not.
The problem was that we were always writting color data to the array
regardless of use_color.

There was also a bug with _cogl_texture_sliced_polygon in that it was
writing byte color components but we were expecting float components.  We
now use byte components in _cogl_multitexture_unsliced_polygon too and pass
GL_UNSIGNED_BYTE to glColorPointer.
2009-06-29 23:49:06 +01:00
Robert Bragg
8f734ccbb4 [vertex-buffer] Add cogl_vertex_buffer_indices_get_type API
cogl_vertex_buffer_indices lets you query back the data type used for the
given indices handle.
2009-06-29 23:49:05 +01:00
Robert Bragg
555159776b [vertex-buffer] Remove the COGL_INDICES_TYPE_UNSIGNED_INT indicies type
Since some embedded GPUs may not support 32bit integer indices we wont
include it until there is a particular need.
2009-06-29 23:49:05 +01:00
Damien Lespiau
a66f027c61 [cogl] Add COGL_HAS_GL and COGL_HAS_GLES
Cogl already add similar defines but with the CLUTTER namespace
(CLUTTER_COGL_HAS_GL and CLUTTER_COGL_HAS_GLES). Let's just add two
similar defines with the COGL namespace. Removing the CLUTTER_COGL ones
could break applications silently for no real good reason.
2009-06-29 21:37:02 +02:00
Damien Lespiau
3653a9a64d Public headers should not have #ifdefs relying on private defines
HAVE_COGL_GLES2 is defined in config.h through the configure script and
should not be used in public headers.

The patch makes configure generate the right define that can be used
later in the header.
2009-06-19 06:43:34 +01:00
Colin Walters
63c84c46f8 Plug minor memory leak in cogl_vertex_buffer_submit_real
Free a temporary list.
2009-06-16 15:46:51 +01:00
Emmanuele Bassi
0415d62d40 Disable single header inclusion for GLib
In order to be ready for the next major version of GLib we need to
disable single header inclusion by using the G_DISABLE_SINGLE_INCLUDES
define in the build process.
2009-06-15 11:29:37 +01:00
Robert Bragg
9d82995773 [_cogl_texture_bitmap_prepare] use bitmap format for FORMAT_ANY + no alpha
My patch to choose a premultiplied format when the user gives
COGL_PIXEL_FORMAT_ANY for the internal_format broke the case where the data
in question doesn't have and alpha channel.

This was accidentally missed when merging the premultiplication branch
since I merged a local version of the branch that missed this commit.
2009-06-11 18:49:30 +01:00
Robert Bragg
71b62e75d2 [cogl] Don't allow calling cogl_set_source_texture with an INVALID_HANDLE
Although the underlying materials should allow layers with INVALID_HANDLES
it shouldn't be necissary to expose that via cogl_set_source_texture() and
it's easier to resolve a warning/crash here than odd artefacts/crashes later
in the pipeline.
2009-06-11 16:28:01 +01:00
Robert Bragg
96827db740 Bug 1406 - Handling of premultiplication in clutter
Merge branch 'premultiplication'

[cogl-texture docs] Improves the documentation of the internal_format args
[test-premult] Adds a unit test for texture upload premultiplication semantics
[fog] Document that fogging only works with opaque or unmultipled colors
[test-blend-strings] Explicitly request RGBA_888 tex format for test textures
[premultiplication] Be more conservative with what data gets premultiplied
[bitmap] Fixes _cogl_bitmap_fallback_unpremult
[cogl-bitmap] Fix minor copy and paste error in _cogl_bitmap_fallback_premult
Avoid unnecesary unpremultiplication when saving to local data
Don't unpremultiply Cairo data
Default to a blend function that expects premultiplied colors
Implement premultiplication for CoglBitmap
Use correct texture format for pixmap textures and FBO's
Add cogl_color_premultiply()
2009-06-11 16:00:28 +01:00
Robert Bragg
ec77b91398 [cogl-texture docs] Improves the documentation of the internal_format args
Clarifies that if you give COGL_PIXEL_FORMAT_ANY as the internal format for
cogl_texture_new_from_file or cogl_texture_new_from_data then Cogl will
choose a premultiplied internal format.
2009-06-11 14:31:01 +01:00
Robert Bragg
70636b4815 [fog] Document that fogging only works with opaque or unmultipled colors
The fixed function fogging provided by OpenGL only works with unmultiplied
colors (or if the color has an alpha of 1.0) so since we now premultiply
textures and colors by default a note to this affect has been added to
clutter_stage_set_fog and cogl_set_fog.

test-depth.c no longer uses clutter_stage_set_fog for this reason.

In the future when we can depend on fragment shaders we should also be
able to support fogging of premultiplied primitives.
2009-06-11 14:17:53 +01:00
Robert Bragg
a9b011f3ed [premultiplication] Be more conservative with what data gets premultiplied
We don't want to force texture data to be premultipled if the user
explicitly specifies a non premultiplied internal_format such as
COGL_PIXEL_FORMAT_RGBA_8888.  So now Cogl will only automatically
premultiply data when COGL_PIXEL_FORMAT_ANY is given for the
internal_format, or a premultiplied internal format such as
COGL_PIXEL_FORMAT_RGBA_8888_PRE is requested but non-premultiplied source
data is given.

This approach is consistent with OpenVG image formats which have already
influenced Cogl's pixel format semantics.
2009-06-11 14:17:53 +01:00
Robert Bragg
9d3aa57604 [bitmap] Fixes _cogl_bitmap_fallback_unpremult
The _cogl_unpremult_alpha_{first,last} functions which
_cogl_bitmap_fallback_unpremult depends on were incorrectly casting each
of the byte components of a texel to a gulong and performing shifts as
if it were dealing with the whole texel.

It now just uses array indexing to access the byte components without
needing to cast or manually shift any bits around.

Even though we used to depend on unpremult whenever we used a
ClutterCairoTexture, clutter_cairo_texture_context_destroy had it's own
unpremult code which worked which is why this bug wouldn't have been noticed
before.
2009-06-11 14:17:52 +01:00
Robert Bragg
cb959ef457 [cogl-bitmap] Fix minor copy and paste error in _cogl_bitmap_fallback_premult
The returned bitmap format should include the COGL_PREMULT_BIT flag not
have it explicitly removed as for _cogl_bitmap_fallback_unpremult.
2009-06-11 14:17:52 +01:00
Owen W. Taylor
c3448314d5 Default to a blend function that expects premultiplied colors
Many operations, like mixing two textures together or alpha-blending
onto a destination with alpha, are done most logically if texture data
is in premultiplied form. We also have many sources of premultiplied
texture data, like X pixmaps, FBOs, cairo surfaces. Rather than trying
to work with two different types of texture data, simplify things by
always premultiplying texture data before uploading to GL.

Because the default blend function is changed to accommodate this,
uses of pure-color CoglMaterial need to be adapted to add
premultiplication.

gl/cogl-texture.c gles/cogl-texture.c: Always premultiply
  non-premultiplied texture data before uploading to GL.

cogl-material.c cogl-material.h: Switch the default blend functions
  to ONE, ONE_MINUS_SRC_ALPHA so they work correctly with premultiplied
  data.

cogl.c: Make cogl_set_source_color() premultiply the color.

cogl.h.in color-material.h: Add some documentation about
  premultiplication and its interaction with color values.

cogl-pango-render.c clutter-texture.c tests/interactive/test-cogl-offscreen.c:
  Use premultiplied colors.

http://bugzilla.openedhand.com/show_bug.cgi?id=1406

Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-06-11 14:17:52 +01:00
Owen W. Taylor
888a261999 Implement premultiplication for CoglBitmap
cogl-bitmap.c cogl-bitmap-pixbuf.c cogl-bitmap-fallback.c cogl-bitmap-private.h:
  Add _cogl_bitmap_can_premult(), _cogl_bitmap_premult() and implement
  a reasonably fast implementation in the "fallback" code.

http://bugzilla.openedhand.com/show_bug.cgi?id=1406

Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-06-11 14:17:51 +01:00
Owen W. Taylor
f90017ab4e Add cogl_color_premultiply()
Add a convenience function to convert an ARGB color from
non-premultiplied to premultiplied form.

http://bugzilla.openedhand.com/show_bug.cgi?id=1406

Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-06-11 14:17:51 +01:00
Emmanuele Bassi
bd3254c0f8 [docs] Various gtk-doc fixes for COGL
Try to keep the gtk-doc errors down to a minimum.
2009-06-10 12:57:36 +01:00
Emmanuele Bassi
91856b1bed [introspection] Add --c-include to g-ir-scanner
Since Clutter has a single-include header policy we need to put
the header to be included inside the GIR file.
2009-06-09 12:45:23 +01:00
Neil Roberts
4b125d7fde [CoglTexture] Initialise tex->first_pixels to NULL in all constructors
Otherwise if there is an error before the slices are created it will
try to free the first_pixels array and crash.

It now also checks whether first_pixels has been created before using
it to update the mipmaps. This should only happen for
cogl_texture_new_from_foreign and doesn't matter if the FBO extension
is available. It would be better in this case to fetch the first pixel
using glGetTexImage as Owen mentioned in the last commit.
2009-06-09 11:13:11 +01:00
Owen W. Taylor
1d7a7bf1e6 Fix unitialized first_pixels for foreign textures
tex->first_pixels was never set for foreign textures, leading
to a crash when the texture object is freed.

As a quick fix, simply set to NULL. A more complete fix would
require remembering if we had ever seen the first pixel uploaded,
and if not, doing a glReadPixel to get it before triggering the
mipmap update.

http://bugzilla.openedhand.com/show_bug.cgi?id=1645

Signed-off-by: Neil Roberts <neil@linux.intel.com>
2009-06-09 10:54:54 +01:00
Owen W. Taylor
08d580f68a On bad blend strings, print the error if not returning it
It's very common that there's no reasonable fallback to do if the
blend or combine string you set isn't supported. So, rather than
requiring everybody to pass in a GError purely to catch syntax erorrs,
automatically g_warning() if a parse error is encountered and @error
is NULL.

http://bugzilla.openedhand.com/show_bug.cgi?id=1642

Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-06-08 23:51:08 +01:00
Johan Bilien
f87e10c024 Fix the leak of the GList of layers in CoglMaterial
http://bugzilla.openedhand.com/show_bug.cgi?id=1624

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-06-06 12:59:31 +01:00
Robert Bragg
01e1aae7dd [cogl] cogl_material_set_layer does nothing if resetting the same texture
This avoids dirtying the layer, and should avoid some uneeded state changes
2009-06-05 17:18:32 +01:00
Emmanuele Bassi
6b92296e7f [build] Fix compiler warnings
Silence GCC
2009-06-05 16:46:12 +01:00
Emmanuele Bassi
02fa34f65b Fix a compiler warning 2009-06-05 16:39:18 +01:00
Emmanuele Bassi
7e33fe3175 Merge branch '1.0-integration'
* 1.0-integration: (138 commits)
  [x11] Disable XInput by default
  [xinput] Invert the XI extension version check
  [cogl-primitives] Fix an unused variable warning when building GLES
  [clutter-stage-egl] Pass -1,-1 to clutter_stage_x11_fix_window_size
  Update the GLES backend to have the layer filters in the material
  [gles/cogl-shader] Add a missing semicolon
  [cogl] Move the texture filters to be a property of the material layer
  [text] Fix Pango unit to pixels conversion
  [actor] Force unrealization on destroy only for non-toplevels
  [x11] Rework map/unmap and resizing
  [xinput] Check for the XInput entry points
  [units] Validate units against the ParamSpec
  [actor] Add the ::allocation-changed signal
  [actor] Use flags to control allocations
  [units] Rework Units into logical distance value
  Remove a stray g_value_get_int()
  Remove usage of Units and macros
  [cogl-material] Allow setting a layer with an invalid texture handle
  [timeline] Remove the concept of frames from timelines
  [gles/cogl-shader] Fix parameter spec for cogl_shader_get_info_log
  ...

Conflicts:
	configure.ac
2009-06-05 12:41:42 +01:00
Neil Roberts
fa3ed19db5 [cogl-primitives] Fix an unused variable warning when building GLES
The 'tex' variable is only used if #ifdef'd GL code so it was throwing
an error under GLES. The variable is now moved into a block inside the
#ifdef.
2009-06-04 22:20:18 +01:00
Neil Roberts
6efbb92c58 Update the GLES backend to have the layer filters in the material
This reflects the changes made in 54d8aadf1d for the GLES backend.
2009-06-04 22:12:33 +01:00
Neil Roberts
eff82a546d [gles/cogl-shader] Add a missing semicolon
cogl_shader_get_info_log was missing a semicolon which broke the build
on GLES 2.
2009-06-04 22:10:33 +01:00
Neil Roberts
54d8aadf1d [cogl] Move the texture filters to be a property of the material layer
The texture filters are now a property of the material layer rather
than the texture object. Whenever a texture is painted with a material
it sets the filters on all of the GL textures in the Cogl texture. The
filter is cached so that it won't be changed unnecessarily.

The automatic mipmap generation has changed so that the mipmaps are
only generated when the texture is painted instead of every time the
data changes. Changing the texture sets a flag to mark that the
mipmaps are dirty. This works better if the FBO extension is available
because we can use glGenerateMipmap. If the extension is not available
it will temporarily enable automatic mipmap generation and reupload
the first pixel of each slice. This requires tracking the data for the
first pixel.

The COGL_TEXTURE_AUTO_MIPMAP flag has been replaced with
COGL_TEXTURE_NO_AUTO_MIPMAP so that it will default to
auto-mipmapping. The mipmap generation is now effectively free if you
are not using a mipmap filter mode so you would only want to disable
it if you had some special reason to generate your own mipmaps.

ClutterTexture no longer has to store its own copy of the filter
mode. Instead it stores it in the material and the property is
directly set and read from that. This fixes problems with the filters
getting out of sync when a cogl handle is set on the texture
directly. It also avoids the mess of having to rerealize the texture
if the filter quality changes to HIGH because Cogl will take of
generating the mipmaps if needed.
2009-06-04 19:03:40 +01:00
Neil Roberts
26f07abc65 [cogl-material] Allow setting a layer with an invalid texture handle
It was previously possible to create a material layer with no texture
by setting some property on it such as the matrix. However it was not
possible to get back to that state without removing the layer and
recreating it. It is useful to be able to remove the texture to free
resources without forgetting the state of the layer so we can put a
different texture in later.
2009-06-04 14:04:32 +01:00
Neil Roberts
c20886c5e3 [gles/cogl-shader] Fix parameter spec for cogl_shader_get_info_log
The stub version of cogl_shader_get_info_log needed to be updated to
match the changes to the function signature in 61deeafa.
2009-06-04 12:04:47 +01:00
Neil Roberts
f89ff7f383 Load glBlendEquation and glBlendColor using cogl_get_proc_address
These are defined since OpenGL 1.2 and since Windows doesn't export
any functions defined after 1.1 we need to load them dynamically.
2009-06-04 11:50:06 +01:00
Neil Roberts
daa95b561e Rename 'near' and 'far' variables to 'z_near' and 'z_far'
The Windows headers define near and far to be empty so it breaks the
build.
2009-06-04 11:48:51 +01:00
Neil Roberts
f4a431a947 [cogl-texture] Don't take ownership of the data in cogl_texture_new_from_bitmap
When creating a Cogl texture from a Cogl bitmap it would steal the
data by setting the bitmap_owner flag and clearing the data pointer
from the bitmap. The data would be freed by the time the
new_from_bitmap is finished. There is no reason to do this because the
data will be freed when the Cogl bitmap is unref'd and it is confusing
not to be able to reuse the bitmap for creating multiple textures.
2009-06-02 18:01:41 +01:00
Emmanuele Bassi
61deeafa71 [cogl-shader] Make get_info_log() slightly nicer
The cogl_shader_get_info_log() function is very inconvenient for
language bindings and for regular use, as it requires a static
buffer to be filled -- basically just providing a wrapper around
glGetInfoLogARB().

Since COGL aims to be a more convenient API than raw GL we should
just make cogl_shader_get_info_log() return an allocated string
with the GLSL compiler log.
2009-06-01 17:40:23 +01:00
Neil Roberts
5c26cc6ba7 Use GL_QUADS for flushing a quad batch
Instead of using GL_TRIANGLES and uploading the indices every time, it
now uses GL_QUADS instead on OpenGL. Under GLES it still uses indices
but it uses the new cogl_vertex_buffer_indices_get_for_quads function
to avoid uploading the vertices every time.

This requires the _cogl_vertex_buffer_indices_pointer_from_handle
function to be exposed privately to the rest of Cogl.

The static_indices array has been removed from the Cogl context.
2009-06-01 17:29:01 +01:00
Neil Roberts
67544f38d4 [cogl-vertex-buffer] Add cogl_vertex_buffer_indices_get_for_quads
This function can be used as an efficient way of drawing groups of
quads without using GL_QUADS. It generates a VBO containing the
indices needed to render using pairs of GL_TRIANGLES. The VBO is
globally cached so that it only needs to be uploaded whenever more
indices are requested than ever before.
2009-06-01 14:50:52 +01:00
Emmanuele Bassi
293eeed507 [build] Remove cogl-enum-types.h on distclean
The cogl-enum-types.h file is created by glib-mkenums under
/clutter/cogl/common, and then copied in /clutter/cogl in order
to make the inclusion of that file work inside cogl.h.

Since we're copying it in a different location, the Makefile
for that location has to clean up the copy.
2009-05-29 17:50:58 +01:00
Emmanuele Bassi
936f638a42 [build] Fix dist issues
* cogl-deprecated.h is not being installed

* cogl-enum-types.c.in is not part of the dist
2009-05-29 17:10:27 +01:00
Emmanuele Bassi
cbbc1a9ca3 [build] Copy cogl-enum-types.h under the guard
We avoid rebuilding cogl-enum-types.h and cogl-enum-types.c by
using a "guard" -- a stamp file that will block Makefile. Since
we need cogl-enum-types.h into /clutter/cogl as well for the
cogl.h include to work, if we copy the cogl-enum-types.h
unconditionally it will cause a rebuild of the whole COGL; which
will cause a full rebuild.

To solve this, we can copy the header file when generating it
under the stamp file.
2009-05-29 15:13:55 +01:00
Emmanuele Bassi
e565c1f1db [build] Encode the target into the backend library
The libclutter-cogl internal object should be the only dependency
for Clutter, since we are already copying it inside clutter/cogl
for the introspection scanner. For this reason, the backend-specific,
real internal object should be built with the backend encoded into
the file name, like libclutter-common. This makes the build output
a little bit more clear: instead of having two:

  LINK libclutter-cogl-common.la
  ...
  LINK libclutter-cogl.la
  LINK libclutter-cogl.la

We'll have:

  LINK libclutter-cogl-common.la
  ...
  LINK libclutter-cogl-gl.la
  LINK libclutter-cogl.la

Same applies for the GLES backend.
2009-05-29 12:50:48 +01:00
Emmanuele Bassi
b4861cbd21 Use g_once when registering enumeration types
Just like we do with GObject types and G_DEFINE_TYPE, we should
use the g_once_init_enter/g_once_init_leave mechanism to make the
GType registration of enumeration types thread safe.
2009-05-29 12:40:23 +01:00
Emmanuele Bassi
3248bb1b75 [cogl] Generate enumeration GTypes
COGL is starting to have more enumerations than I can handle
by hand. Let's use glib-mkenums and be done with it.
2009-05-29 12:31:47 +01:00
Emmanuele Bassi
7b75f93db1 [docs] Fixes for the API reference
* Add unused symbols

* Document and sync argument names with their gtk-doc counterpart

* Add missing descriptions
2009-05-28 17:18:13 +01:00
Emmanuele Bassi
7252c14197 [cogl] Make cogl_setup_viewport() a private function
The setup_viewport() function should only be used by Clutter and
not by application code.

It can be emulated by changing the Stage size and perspective and
requeueing a redraw after calling clutter_stage_ensure_viewport().
2009-05-28 14:14:50 +01:00
Emmanuele Bassi
32018584c0 [cogl deprecated] Add backface culling deprecation
The backface culling enabling function was split and renamed, just
like the depth testing one, so we need to add the macro to the
cogl-deprecated.h header.
2009-05-28 14:14:50 +01:00
Robert Bragg
be826ed4e7 [cogl vertex buffers] Give indices a CoglHandle so they are shareable
Previously indices were tightly bound to a particular Cogl vertex buffer
but we would like to be able to share indices so now we have
cogl_vertex_buffer_indices_new () which returns a CoglHandle.

In particular we could like to have a shared set of indices for drawing
lists of quads that can be shared between the pango renderer and the
Cogl journal.
2009-05-28 13:27:54 +01:00
Robert Bragg
f0849fc3e2 [cogl journal] If we are only flushing one quad use a TRIANGLE_FAN
At the moment Cogl doesn't do much batching of quads so most of the time we
are flushing a single quad at a time.  This patch simplifies how we submit
those quads to OpenGL by using glDrawArrays with GL_TRIANGLE_FAN mode
instead of sending indexed vertices using GL_TRIANGLES mode.

Note: I hope to follow up soon with changes that improve our batching and
also move the indices into a VBO so they don't need to be re-validated every
time we call glDrawElements.
2009-05-28 02:43:36 +01:00
Robert Bragg
57cb20dc06 [deprecated defines] Adds some missing cogl_texture_* deprecated defines
To assist people porting code from 0.8, the cogl_texture_* functions that
have been replaced now have defines that give some hint as to how they
should be replaced.
2009-05-28 02:43:36 +01:00
Robert Bragg
605243d952 [cogl] renamed cogl_enable_* to cogl_set_*_enabled + added getters
cogl_enable_depth_test and cogl_enable_backface_culling have been renamed
and now have corresponding getters, the new functions are:
  cogl_set_depth_test_enabled
  cogl_get_depth_test_enabled
  cogl_set_backface_culling_enabled
  cogl_get_backface_culling_enabled
2009-05-28 02:43:36 +01:00
Robert Bragg
96188bab62 [cogl matrix] Support ortho and perspective projections.
This adds cogl_matrix api for multiplying matrices either by a perspective
or ortho projective transform.  The internal matrix stack and current-matrix
APIs also have corresponding support added.

New public API:
cogl_matrix_perspective
cogl_matrix_ortho
cogl_ortho
cogl_set_modelview_matrix
cogl_set_projection_matrix
2009-05-28 02:43:35 +01:00
Robert Bragg
12c8ff8606 [cogl] Remove cogl_{create,destroy}_context from the public API
cogl_create_context is dealt with internally when _cogl_get_default context
is called, and cogl_destroy_context is currently never called.

It might be nicer later to get an object back when creating a context so
Cogl can support multiple contexts, so these functions are being removed
from the API until we get a chance to address context management properly.

For now cogl_destroy_context is still exported as _cogl_destroy_context so
Clutter could at least install a library deinit handler to call it.
2009-05-28 02:43:35 +01:00
Robert Bragg
59bd824404 [vbo indices] tweak add_indices api to return an id and add delete_indices api
Originally cogl_vertex_buffer_add_indices let the user pass in their own unique
ID for the indices; now the Id is generated internally and returned to the
caller.
2009-05-28 02:43:35 +01:00
Robert Bragg
d51faed660 [cogl-vertex-buffer] Seal GL types from the public API
We now have CoglAttributeType and CoglVerticesMode typedefs to replace the
use of GLenum in the public API.
2009-05-28 02:43:35 +01:00
Robert Bragg
6bb6686666 [cogl-vertex-buffers] Support putting index arrays into VBOS
It's now possible to add arrays of indices to a Cogl vertex buffer and
they will be put into an OpenGL vertex buffer object. Since it's quite
common for index arrays to be static it saves the OpenGL driver from
having to validate them repeatedly.

This changes the cogl_vertex_buffer_draw_elements API: It's no longer
possible to provide a pointer to an index array at draw time. So
cogl_vertex_buffer_draw_elements now takes an indices identifier that
should correspond to an idendifier returned when calling
cogl_vertex_buffer_add_indices ()
2009-05-28 02:43:34 +01:00
Robert Bragg
68214fe4b8 [cogl] Remove cogl_flush_gl_state from the API
This is being removed before we release Clutter 1.0 since the implementation
wasn't complete, and so we assume no one is using this yet.  Util we have
someone with a good usecase, we can't pretend to support breaking out into
raw OpenGL.
2009-05-28 02:43:34 +01:00
Robert Bragg
f322da3794 [material] Reduce the material API in preperation for releasing Clutter 1.0
There were a number of functions intended to support creating of new
primitives using materials, but at this point they aren't used outside of
Cogl so until someone has a usecase and we can get feedback on this
API, it's being removed before we release Clutter 1.0.
2009-05-28 02:43:34 +01:00
Robert Bragg
f28d5e481b [cogl-material] Removes all the API made redundant by the blend strings API
This removes the following API:
  cogl_material_set_blend_factors
  cogl_material_set_layer_combine_function
  cogl_material_set_layer_combine_arg_src
  cogl_material_set_layer_combine_arg_op

These were rather awkward to use, so since it's expected very few people are
using them at this point and it should be straight forward to switch over
to blend strings, the API is being removed before we release Clutter 1.0.
2009-05-28 02:43:34 +01:00
Robert Bragg
33994caa71 [cogl-material] Support string based blending and layer combine descriptions
Setting up layer combine functions and blend modes is very awkward to do
programatically.  This adds a parser for string based descriptions which are
more consise and readable.

E.g. a material layer combine function could now be given as:
  "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])"
or
  "RGB = REPLACE (PREVIOUS)"
  "A = MODULATE (PREVIOUS, TEXTURE)"

The simple syntax and grammar are only designed to expose standard fixed
function hardware, more advanced combining must be done with shaders.

This includes standalone documentation of blend strings covering the aspects
that are common to blending and texture combining, and adds documentation
with examples specific to the new cogl_material_set_blend() and
cogl_material_layer_set_combine() functions.

Note: The hope is to remove the now redundant bits of the material API
before 1.0
2009-05-28 02:43:28 +01:00
Robert Bragg
ef1a771fde [build] Fixes some compiler warnings when building for GLES 2
There were a number of variables shadowing other symbols, and an unused
display variable.
2009-05-28 01:15:41 +01:00
Emmanuele Bassi
71498a6376 [cogl] Remove max_waste argument from Texture ctors
The CoglTexture constructors expose the "max-waste" argument for
controlling the maximum amount of wasted areas for slicing or,
if set to -1, disables slicing.

Slicing is really relevant only for large images that are never
repeated, so it's a useful feature only in controlled use cases.
Specifying the amount of wasted area is, on the other hand, just
a way to mess up this feature; 99% the times, you either pull this
number out of thin air, hoping it's right, or you try to do the
right thing and you choose the wrong number anyway.

Instead, we can use the CoglTextureFlags to control whether the
texture should not be sliced (useful for Clutter-GST and for the
texture-from-pixmap actors) and provide a reasonable value for
enabling the slicing ourself. At some point, we might even
provide a way to change the default at compile time or at run time,
for particular platforms.

Since max_waste is gone, the :tile-waste property of ClutterTexture
becomes read-only, and it proxies the cogl_texture_get_max_waste()
function.

Inside Clutter, the only cases where the max_waste argument was
not set to -1 are in the Pango glyph cache (which is a POT texture
anyway) and inside the test cases where we want to force slicing;
for the latter we can create larger textures that will be bigger than
the threshold we set.

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
Signed-off-by: Robert Bragg <robert@linux.intel.com>
Signed-off-by: Neil Roberts <neil@linux.intel.com>
2009-05-23 19:35:19 +01:00
Neil Roberts
b3fe1b8a8a [cogl-vertex-buffer] Ensure the clip state before rendering
Before any rendering is done by Cogl it needs to ensure the clip stack
is set up correctly by calling cogl_clip_ensure. This was not being
done for the Cogl vertex buffer so it would still use the clip from
the previous render.
2009-05-22 11:48:34 +01:00
Robert Bragg
14c3ef1f8d [build] The cogl GE macro wasn't passing an int according to the format string
This patch simply updates the arguments passed to g_warning inline with the
given format string.
2009-05-21 15:10:38 +01:00
Neil Roberts
f13c3ee309 Make backface culling work with vertex buffers
Backface culling is enabled as part of cogl_enable so the different
rendering functions in Cogl need to explicitly opt-in to have backface
culling enabled. Cogl vertex buffers should allow backface culling so
they should check whether it is enabled and then set the appropriate
cogl_enable flag.
2009-05-21 14:57:07 +01:00
Emmanuele Bassi
c74586d019 [cogl] Do no include gprintf.h
We are not using any of the g_printf* family of functions, so we
can import glib.h instead.
2009-05-20 15:21:32 +01:00
Emmanuele Bassi
1f1d19f634 [cogl] Move debugging to a configure-time switch
Currently, COGL depends on defining debug symbols by manually
modifying the source code. When it's done, it will forcefully
print stuff to the console.

Since COGL has also a pretty, runtime selectable debugging API
we might as well switch everything to it.

In order for this to happen, configure needs a new:

        --enable-cogl-debug

command line switch; this will enable COGL debugging, the
CoglHandle debugging and will also turn on the error checking
for each GL operation.

The default setting for the COGL debug defines is off, since
it slows down the GL operations; enabling it for a particular
debug build is trivial, though.
2009-05-19 16:00:18 +01:00
Emmanuele Bassi
df1a9b7a74 [cogl] Rework the debug messages
COGL has a debug message system like Clutter's own. In parallel,
it also uses a coupld of #defines. Spread around there are also
calls to printf() instead to the more correct g_log* wrappers.

This commit tries to unify and clean up the macros and the
debug message handling inside COGL to be more consistent.
2009-05-19 14:44:29 +01:00
Emmanuele Bassi
529e48fbbe Remove duplicate cogl-internal.h header
The cogl-internal.h header has been moved inside cogl/common in
commit 8a1b4f8326 but has been left behind inside cogl/gl and
cogl/gles.
2009-05-19 14:42:37 +01:00
Emmanuele Bassi
3115a61688 [cogl] Rework the GL-error-to-string conversion
The code for the conversion of the GL error enumeration code
into a string is not following the code style and conventions
we follow in Clutter and COGL.

The GE() macro is also using fprintf(stderr) directly instead
of using g_warning() -- which is redirectable to an alternative
logging system using the g_log* API.
2009-05-19 13:24:56 +01:00
Emmanuele Bassi
cd3acca2b7 [build] Link Cogl against -lm
We use math routines inside Cogl, so it's correct to have it in
the LIBADD line. In normal usage something else was pulling in
-lm, but the introspection is relying on linking against the
convenience library.

Based on a patch by: Colin Walters <walters@verbum.org>

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-05-14 23:23:00 +01:00
Emmanuele Bassi
08ac50faae [build] List cogl-internal.h
During the Makefile clean up, cogl-internal.h got lost and this
broke the dist. Let's put it back in.
2009-05-14 19:51:03 +01:00
Emmanuele Bassi
608c3e3ab4 [build] Fix with --disable-introspection
The required "fake" libclutter-cogl.la upon with the main clutter
shared object depends is only built with introspection enabled
instead of being built unconditionally.
2009-05-14 10:03:31 +01:00
Owen W. Taylor
d8aa6827ee Don't build Cogl.gir against installed Clutter library
Passing:

 --library=clutter-@CLUTTER_FLAVOUR@-@CLUTTER_API_VERSION@

to g-ir-scanner, when building Cogl was causing g-ir-scanner to
link the introspection program against the installed clutter library,
if it existed or fail otherwise. Instead copy the handling from
the json/ directory where we link against the convenience library
to scan, and do the generation of the typelib later in the
main clutter/directory.

Fixes bug:

  http://bugzilla.openedhand.com/show_bug.cgi?id=1594

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-05-13 23:31:43 +01:00
Robert Bragg
e80fcbc298 [cogl-clip-stack] Support pushing rectangles onto the stack using window coords
Previously clipping could only be specified in object coordinates, now
rectangles can also be pushed in window coordinates.

Internally rectangles pushed this way are intersected and then clipped using
scissoring.  We also transparently try to convert rectangles pushed in
object coordinates into window coordinates as we anticipate the scissoring
path will be faster then the clip planes and undoubtably it will be faster
than using the stencil buffer.
2009-05-12 15:44:33 +01:00
Robert Bragg
36cfb60307 [cogl] Remove the COGL{enum,int,uint} typedefs
COGLenum, COGLint and COGLuint which were simply typedefs for GL{enum,int,uint}
have been removed from the API and replaced with specialised enum typedefs, int
and unsigned int. These were causing problems for generating bindings and also
considered poor style.

The cogl texture filter defines CGL_NEAREST and CGL_LINEAR etc are now replaced
by a namespaced typedef 'CoglTextureFilter' so they should be replaced with
COGL_TEXTURE_FILTER_NEAREST and COGL_TEXTURE_FILTER_LINEAR etc.

The shader type defines CGL_VERTEX_SHADER and CGL_FRAGMENT_SHADER are handled by
a CoglShaderType typedef and should be replaced with COGL_SHADER_TYPE_VERTEX and
COGL_SHADER_TYPE_FRAGMENT.

cogl_shader_get_parameteriv has been replaced by cogl_shader_get_type and
cogl_shader_is_compiled. More getters can be added later if desired.
2009-05-12 14:53:44 +01:00
Neil Roberts
10783e053b [build] Fix out-of-tree builds for Cogl
Commit 43fa38fcf5 broke out-of-tree builds by removing some of the
builddir directories from the include path. builddir/clutter/cogl and
builddir/clutter are needed because cogl.h and cogl-defines-gl.h are
automatically generated by the configure script. The main clutter
headers are in the srcdir so this needs to be in the path too.
2009-05-12 14:16:46 +01:00
Emmanuele Bassi
d00cac6353 [build] Unbreak compilation
When building Clutter with introspection enabled everything stops
at Cogl GIR generation because it depends on the installed library
to work. Since we still require some changes in the API to be able
to build the GIR and the typelib for Cogl we should disable the
generation of the GIR as well.
2009-05-10 00:44:10 +01:00
Emmanuele Bassi
8ca46d728d [build] Build Cogl introspection data
Currently, the introspection data for Cogl is built right into
Clutter's own typelib. This makes functions like:

  cogl_path_round_rectangle()

Appear as:

  Clutter.cogl_path_round_rectangle()

It should be possible, instead, to have a Cogl namespace and:

  Cogl.path_round_rectangle()

This means building introspection data for Cogl alone. Unfortunately,
there are three types defined in Cogl that confuse the introspection
scanner, and make it impossible to build a typelib:

  COGLint
  COGLuint
  COGLenum

These three types should go away before 1.0, substituted by int,
unsigned int and proper enumeration types. For this reason, we can
just set up the GIR build and wait until the last moment to create
the typelib. Once that has been done, we will be able to safely
remove the Cogl API from the Clutter GIR and typelib and let
people import Cogl if they want to use the Cogl API via introspection.
2009-05-06 17:59:25 +01:00
Emmanuele Bassi
43fa38fcf5 [build] Clean up the makefile
Split out the files into their own variables to clean up the
Makefile template; also use top_srcdir with the header files
instead of top_builddir.
2009-05-06 17:59:25 +01:00
Emmanuele Bassi
c065524b9f Fix inclusion guards and headers
The C++ inclusion guards G_BEGIN_DECLS and G_END_DECLS are
defined by GLib; so we need to include glib.h before using
them.
2009-05-06 17:59:25 +01:00
Robert Bragg
353187ce49 [cogl-material] Adds a cogl_material_set_color4f convenience function
This is simply a wrapper around cogl_color_set_from_4f and
cogl_material_set_color. We already had a prototype for this, it was
an oversight that it wasn't already implemented.
2009-05-02 04:12:26 +01:00
Robert Bragg
a5cdfdfd87 [cogl-offscreen] Cleans up the cogl offscreen API and adds documentation
There were several functions I believe no one is currently using that were
only implemented in the GL backend (cogl_offscreen_blit_region and
cogl_offscreen_blit) that have simply been removed so we have a chance to
think about design later with a real use case.

There was one nonsense function (cogl_offscreen_new_multisample) that
sounded exciting but in all cases it just returned COGL_INVALID_HANDLE
(though at least for GL it checked for multisampling support first!?)
it has also been removed.

The MASK draw buffer type has been removed. If we want to expose color
masking later then I think it at least would be nicer to have the mask be a
property that can be set on any draw buffer.

The cogl_draw_buffer and cogl_{push,pop}_draw_buffer function prototypes
have been moved up into cogl.h since they are for managing global Cogl state
and not for modifying or creating the actual offscreen buffers.

This also documents the API so for example desiphering the semantics of
cogl_offscreen_new_to_texture() should be a bit easier now.
2009-05-02 04:12:26 +01:00
Havoc Pennington
e47b198225 add cogl_push_draw_buffer() and cogl_pop_draw_buffer()
These are necessary if nesting redirections to an fbo,
otherwise there's no way to know how to restore
previous state.

glPushAttrib(GL_COLOR_BUFFER_BIT) would save draw buffer
state, but also saves a lot of other stuff, and
cogl_draw_buffer() relies on knowing about all draw
buffer state changes. So we have to implement a
draw buffer stack ourselves.

Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-05-02 04:12:26 +01:00
Robert Bragg
d5fc61102f [cogl] Only expose CoglBitmap as a CoglHandle
It was inconsistent that we exposed the CoglBitmap struct instead of an
opaque CoglHandle.
2009-05-02 04:12:26 +01:00
Robert Bragg
ee57192f47 [cogl-material] make _cogl_material_layer_free check for an invalid texture handle
It is valid in some situations to have a material layer with an invalid texture
handle (e.g. if you setup a texture combine mode before setting the texture)
and so _cogl_material_layer_free needs to check for a valid handle before
attempting to unref it.
2009-05-02 04:12:25 +01:00
Robert Bragg
f85377372c [cogl] Updates all file headers and removes lots of trailing white space
Adds missing notices, and ensures all the notices are consistent. The Cogl
blurb also now reads:

 * Cogl
 *
 * An object oriented GL/GLES Abstraction/Utility Layer
2009-05-02 04:12:25 +01:00
Robert Bragg
741c4bb5e9 [cogl] Adds a bitfield argument to cogl_clear for specifying which buffers to clear
Redundant clearing of depth and stencil buffers every render can be very
expensive, so cogl now gives control over which auxiliary buffers are
cleared.

Note: For now clutter continues to clear the color, depth and stencil buffer
each paint.
2009-05-02 04:12:12 +01:00
Robert Bragg
e4d3b0536f [gl/cogl.c] #include <gmodule.h> for OS X builds
In unifying the {gl,gles}/cogl.c code recently, moving most of the code into
common/cogl.c the gmodule.h include was also mistakenly moved.

Thanks to Felix Rabe for reporting this issue.

Note: I haven't tested this fix myself, as I'm not set up to be able to
build for OS X
2009-04-20 14:20:37 +01:00
Robert Bragg
46c20f1523 [cogl vertex buffers] Adds fallbacks for drivers without VBO support
Buffer objects aren't currently available for glx indirect contexts, so we
now have a fallback that simply allocates fake client side vbos to store the
attributes.
2009-04-20 13:04:34 +01:00
Robert Bragg
ac21e7b182 [cogl debug] --cogl-debug=rectangles now outlines all cogl rectangles
This makes the #if 0'd debug code that was in _cogl_journal_flush_quad_batch
- which we have repeatedly found usefull for debugging various geometry
issues in Clutter apps - a runtime debug option.

The outline colors rotate in order from red to green to blue which can also
help confirm the order that your geometry really drawn.

The outlines are not affected by the current material state, so if you e.g.
have a blending bug where geometry mysteriously disappears this can confirm
if the underlying rectangles are actually being emitted but blending is
causing them to be invisible.
2009-04-17 15:25:28 +01:00
Neil Roberts
3fdacf9762 [cogl-handle] Fix the broken debug macros
The debug macros for tracking reference counting of CoglHandles had
some typos introduced in c3d9f0 which meant it failed to compile when
COGL_DEBUG is 1.
2009-04-06 12:44:15 +01:00
Robert Bragg
e464acff7a [cogl] cogl_is_*(): Don't dereference an invalid handle; just return FALSE
An invalid handle is implicitly not of any type.
2009-04-06 11:35:10 +01:00
Robert Bragg
c3d9f0bed4 [cogl-handle] Optimize how we define cogl handles
The cogl_is_* functions were showing up quite high on profiles due to
iterating through arrays of cogl handles.

This does away with all the handle arrays and implements a simple struct
inheritance scheme. All cogl objects now add a CoglHandleObject _parent;
member to their main structures. The base object includes 2 members a.t.m; a
ref_count, and a klass pointer. The klass in turn gives you a type and
virtual function for freeing objects of that type.

Each handle type has a _cogl_##handle_type##_get_type () function
automatically defined which returns a GQuark of the handle type, so now
implementing the cogl_is_* funcs is just a case of comparing with
obj->klass->type.

Another outcome of the re-work is that cogl_handle_{ref,unref} are also much
more efficient, and no longer need extending for each handle type added to
cogl. The cogl_##handle_type##_{ref,unref} functions are now deprecated and
are no longer used internally to Clutter or Cogl. Potentially we can remove
them completely before 1.0.
2009-04-02 11:58:43 +01:00
Robert Bragg
04ebd6be44 [cogl] handle_automatic_blend_enable(): consider layers with invalid textures
A layer object may be instantiated when setting a combine mode, but before a
texture is associated. (e.g. this is done by the pango renderer) if this is the
case we shouldn't call cogl_texture_get_format() with an invalid cogl handle.

This patch skips over layers without a texture handle when determining if any
textures have an alpha channel.
2009-04-02 11:50:44 +01:00
Robert Bragg
8a1b4f8326 Unifies 90% of the code in {gl,gles}/cogl.c in common/cogl.c
This code keeps on diverging and we get bugs and fixes in one version but
not the other. This should make things a bit more maintainable.
2009-04-01 13:19:35 +01:00
Robert Bragg
50c1fc6291 Removes cogl_blend_func prototype from cogl-internal.h
cogl_blend_func was removed a while ago so this was just a left over from then
2009-03-30 18:02:03 +01:00
Neil Roberts
68ab2c6024 [doc] Fix two small typos in cogl-vertex-buffer
The symbol name for cogl_vertex_buffer_draw_elements was wrong so it
ended up with no documentation. The name for the vertex attribute was
incorrect in cogl_vertex_buffer_add.
2009-03-25 14:53:58 +00:00
Robert Bragg
3d81f0c08e [build] Fixes a cogl-vertex-buffer.c warning when building for GLES
GLES 1 doesn't support GLSL so it never needs to use the generic_index
variable for generic attributes which was flagging a warning.
2009-03-23 16:32:17 +00:00
Robert Bragg
891ed53564 [cogl] Move rect and poly drawing code from cogl-texture.c to cogl-primitives.c
None of this code directly related to implementing CoglTextures, and the
code was needlessly duplicated between the GL and GLES backends. This moves
the cogl_rectangle* and cogl_polygon* code into common/cogl-primitives.c
makes which makes lot of sense since the two copies keep needlessly
diverging introducing or fixing bugs in one but not the other. For instance
I came accross one such bug regarding the enabling of texture units when
unifying the code.
2009-03-23 16:32:07 +00:00
Robert Bragg
b30bb575a1 [cogl_rectangles] A minor doc fix, and missing newline between functions
The gtk-doc had a copy and paste error, saying the float array should be 8
elements per rectangle instead of 4. There was also no newline in the gles
code before the new function.
2009-03-23 12:41:42 +00:00
Johan Bilien
13e5bd9e8b Allow using array of vertices even without textures
It's often nice to be able to draw a batch of vertices, even if these
have no texture coordinates. This add a cogl_rectangles, similar to
cogl_rectangles_with_texture_coords, only without.
2009-03-23 12:41:41 +00:00
Robert Bragg
5a06f1d1d0 Removes a hack in gles/cogl.c that was already fixed in gl/cogl.c
It removes the need to cast a CoglMatrix to a float * for transforming
a vertex manually instead of using cogl_matrix_transform_point.
2009-03-23 12:41:41 +00:00
Emmanuele Bassi
ccca24ab76 Remove usage of the grave accent as quotation mark
See:

  http://www.cl.cam.ac.uk/~mgk25/ucs/quotes.html

This should make Thomas happy.
2009-03-17 14:13:31 +00:00
Robert Bragg
39e2b43b22 [cogl] Apply the fix from 2c1c836417 (Flush matrix before clip planes) to GLES
glClipPlane() is affected by modelview matrix so we need to flush before
calling it.
2009-03-17 11:37:29 +00:00
Robert Bragg
ca3bfe2cea [cogl] Don't endlessly print the same warning regarding layer fallbacks
There are various constraints for when we can support multi-texturing and
when they can't be met we try and print a clear warning explaining why the
operation isn't supported, but we shouldn't endlessly repeat the warning for
every primitive of every frame. This patch fixes that.
2009-03-16 16:19:51 +00:00
Robert Bragg
71d65b629b [cogl-vertex-buffer] fix cogl_vertex_buffer_draw_elements prototype
This function was renamed a while ago in the .c file from
cogl_vertex_buffer_draw_range_elements  but the corresponding .h and
doc/reference/cogl changes weren't made.
2009-03-16 16:19:39 +00:00
Robert Bragg
14e6323554 [cogl-vertex-buffer] Allow querying back the number of vertices a buffer represents
This may be convenient e.g. at draw time if you are simply drawing all vertices
2009-03-16 16:17:02 +00:00
Robert Bragg
075ae9c4a7 [cogl-vertex-buffer] Add a flush of attribute changes in the *_draw() functions
For convenience it is now valid to avoid a seperate call to
cogl_vertex_buffer_submit() and assume that the _draw() calls will do this
for you (though of course if you do this you still need to ensure the
attribute pointers remain valid until your draw call.)
2009-03-16 16:14:17 +00:00
Havoc Pennington
2c1c836417 [cogl] Flush matrix before clip planes
glClipPlane() is affected by modelview matrix so we need to flush
before calling it.

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-03-16 15:10:33 +00:00
Neil Roberts
7f2ef2f1e0 [cogl-path] Minor fix to gtk-doc
Fix the parameters in cogl_path_curve_to and cogl_path_rel_curve_to to
match the actual names otherwise they won't appear correctly in the
docs.
2009-03-13 15:43:19 +00:00
Emmanuele Bassi
89060a9bb3 [cogl] Avoid shadowing math.h symbols
As usual, y1 and y2 end up shadowing symbols exported by math.h.
2009-03-13 15:28:20 +00:00
Neil Roberts
cde05288b7 Change cogl_path_rectangle and cogl_path_round_rectangle to take x1,y1,x2,y2
This matches the changes to cogl_rectangle to improve consistency.
2009-03-13 12:20:26 +00:00
Robert Bragg
ca2844013e Maintain the Cogl assumption that the modelview matrix is normally current
_cogl_add_path_to_stencil_buffer and _cogl_add_stencil_clip were leaving
the projection matrix current when calling cogl_rectangle which was
upsetting _cogl_current_matrix_state_flush.
2009-03-12 18:55:41 +00:00
Robert Bragg
0580dbe015 Finish GLES{1,2} support for client side matrix stacks
Adds glFrustum wrappers (GLES only accepts floats not doubles, and GLES2
needs to use our internal cogl_wrap_glFrustumf)

Adds GL_TEXTURE_MATRIX getter code in cogl_wrap_glGetFloatv

Adds a GL_TEXTURE_MATRIX define for GLES2
2009-03-12 18:55:41 +00:00
Robert Bragg
3a9b18ef51 Use Cogl enum when making modelview-matrix current in cogl_{rotate,transform,etc}
My previous patch incorrectly used the GL enum with the _cogl_set_current_matrix
API.
2009-03-12 18:55:40 +00:00
Robert Bragg
2f34d14cb4 Explicitly make the modelview-matrix current in cogl_{rotate,transform,etc}
Its not intended that users should use these with any other matrix mode, and
internally we now have the _cogl_current_matrix API if we need to play with
other modes.
2009-03-12 18:55:40 +00:00
Robert Bragg
0d88ecb459 Avoid casting CoglMatrix to a GLfloat * when calling glGetFloatv
If we later add internal flags to CoglMatrix then this code wouldn't
initialize those flags. The ways it's now done adds a redundant copy, but
if that turns out to be something worth optimizing we can look again at
using a cast but adding another way for initializing internal flags.
2009-03-12 18:55:40 +00:00
Robert Bragg
61b867442b 80 char fix 2009-03-12 18:55:40 +00:00
Robert Bragg
20a2f76e1f Removes need for casting (const float *) to (GLfloat *) in _cogl_set_clip_planes
This removes cogl.c:apply_matrix(), and makes cogl.c:project_vertex() use
cogl_matrix_transform_point instead.
2009-03-12 18:53:22 +00:00
Havoc Pennington
08932584b5 Virtualize GL matrix operations and use a client-side matrix when GL is indirect
This is useful because sometimes we need to get the current matrix, which
is too expensive when indirect rendering.

In addition, this virtualization makes it easier to clean up the API in
the future.
2009-03-12 18:32:45 +00:00
Emmanuele Bassi
a41361269f [cogl] Initialize all members of CoglContext
Some members of CoglContext still escape initialization.
2009-03-10 18:05:08 +00:00
Emmanuele Bassi
d3245c6624 [cogl] Initialize boolean flag in CoglContext
The private CoglContext is created using g_malloc() and not
zeroed; this means we have to initialize the values we are
going to check, to avoid hitting garbage.

Thanks to Tommi Komulainen.
2009-03-10 17:53:51 +00:00
Emmanuele Bassi
bb83bf282d [cogl] Fix hardcoded paths in the pc file
The commit 24ce193836 fixed the Clutter pkg-config file. Since
COGL now ships its own, we need to fix that as well.
2009-03-10 12:38:04 +00:00
Emmanuele Bassi
9911033505 [cogl-fixed] Implement the CoglFixed fundamental GType
The type machinery for CoglFixed should be implemented by COGL
itself, now that COGL exports the GType of its types.

This allows moving most of what ClutterFixed did directly to
CoglFixed where it belongs.
2009-03-10 12:38:03 +00:00
Emmanuele Bassi
7bf385a067 [cogl-fixed] Add a double-to-fixed conversion macro
Since the conversion of a floating point value to a fixed point
value is already done in double precision we can safely expose
a macro that converts a double precision floating point value to
a CoglFixed one.
2009-03-10 12:38:03 +00:00
Emmanuele Bassi
4a3a3e1cf3 Add pkg-config file for COGL
COGL should ship its own pkg-config file, obviously still pointing
to Clutter's compiler flags and linking options, for COGL-specific
variables that might be queried at configure time.

For instance, it's easier (and less verbose) to do:

  PKG_CHECK_EXISTS([cogl-gl-1.0],
                   [has_gl_backend=yes],
                   [has_gl_backend=no])

Than doing:

  AC_MSG_CHECKING([for GL support in COGL])
  cogl_backend=`$PKG_CONFIG --variable=cogl clutter-0.9`
  if test x$cogl_backend = xgl; then
    has_gl_backend=yes
    AC_MSG_RESULT([found])
  else
    has_gl_backend=no
    AC_MSG_RESULT([not found])
  fi
2009-03-10 12:38:02 +00:00
Emmanuele Bassi
8a1eca7287 [cogl] Add a PANGO debug flag for CoglPango use
The CoglPango code falls under the COGL "jurisdiction"; this means
that it cannot include Clutter headers unless strictly necessary.

The CoglPangoRenderer code was using the CLUTTER_NOTE() macro. Now
that COGL has it's own COGL_NOTE() similar macro, CoglPango should
use that and avoid including clutter-debug.h (which pulls in
clutter-private.h which in turn pulls in clutter-actor.h).

A new flag, COGL_DEBUG_PANGO, has been added to the COGL debug
flags.
2009-03-10 12:38:02 +00:00
Robert Bragg
af0726480c [cogl-matrix] Documents that CoglMatrix members should be considered read only
In the future if we want to annotate matrices with internal flags, and add
caching of the inverse matrix then we need to ensure that all matrix
modifications are done by cogl_matrix API so we'd know when to dirty the
cache or update the flags.

This just adds documentation to that effect, and assuming the most likley
case where someone would try and directly write to matrix members would
probably be to load a constant matrix other than the identity matrix; I
renamed cogl_matrix_init_from_gl_matrix to cogl_matrix_init_from_array to
make it seem more general purpose.
2009-02-26 16:42:32 +00:00
Robert Bragg
0a218a64e2 [cogl-matrix] Adds padding to CoglMatrix
This adds enough padding to allow us to potentially add a cache of the inverse
matrix in the future and private flags to annotate matrices.
2009-02-26 16:42:32 +00:00
Owen W. Taylor
402e2e0d82 Fix x/y confusion for GL_TEXTURE_RECTANGLE_ARB
When "denormalizing" for texture rectangles, multiple X coordinates
by the X size and Y coordinates by the Y size.

http://bugzilla.openedhand.com/show_bug.cgi?id=1479
2009-02-26 11:27:21 +00:00
Jonathan Matthew
eaf202c886 Declare the EnumValues for PixelFormat static
Bug 1473 - CoglPixelFormat enum data must be declared static

When registering an enumeration GType, the GEnumValue or GFlagsValue
arrays must be declared static; otherwise, you get a segmentation
fault when calling the function again.

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-02-24 09:29:08 +00:00
Emmanuele Bassi
605dfb8fd0 Add runtime debug messages for COGL
Clutter is able to show debug messages written using the CLUTTER_NOTE()
macro at runtime, either by using an environment variable:

  CLUTTER_DEBUG=...

or by using a command line switch:

  --clutter-debug=...
  --clutter-no-debug=...

Both are parsed during the initialization process by using the
GOption API.

COGL would benefit from having the same support.

In order to do this, we need a cogl_get_option_group() function in
COGL that sets up a GOptionGroup for COGL and adds a pre-parse hook
that will check the COGL_DEBUG environment variable. The OptionGroup
will also install two command line switches:

  --cogl-debug
  --cogl-no-debug

With the same semantics of the Clutter ones.

During Clutter initialization, the COGL option group will be attached
to the GOptionContext used to parse the command line options passed
to a Clutter application.

Every debug message written using:

  COGL_NOTE (SECTION, "message format", arguments);

Will then be printed only if SECTION was enabled at runtime.

This whole machinery, like the equivalent one in Clutter, depends on
a compile time switch, COGL_ENABLE_DEBUG, which is enabled at the same
time as CLUTTER_ENABLE_DEBUG. Having two different symbols allows
greater granularity.
2009-02-23 13:00:52 +00:00
Robert Bragg
8d04fbb05e [Cogl] Remove a debugging assert that was triggering on false positives
An assert to verify there was no error when generating a buffer object
for the vertex buffer API was being hit when running the GLES1 conformance
tests.
2009-02-23 10:49:35 +00:00
Robert Bragg
5e956a88b8 [cogl-material] Always glBindTexture when flushing material state
Bug #1457 - Creating a new texture messes up the cogl material state
            cache; reported by Neil Roberts

We still don't have caching of bound texture state so we always have to
re-bind the texture when flushing the GL state of any material layers.
2009-02-23 10:49:35 +00:00
Robert Bragg
d13b9de2e2 [Cogl] Fixes automatic handling of the GL blend enable state.
Bug #1460 - Handling of flags in cogl_material_set_color

Cogl automatically enables/disables blending based on whether the source color
has an alhpa < 1.0, or if any textures with an alpha component are in use, but
it wasn't doing it quite right.

At the same time I removed some of the dirty flags which on second thought
are nothing more than micro-optimsations that only helped clutter the code.

thanks to Owen Taylor for reporting the bug
2009-02-23 10:49:35 +00:00
Robert Bragg
34e53736ed [Cogl] the cogl_get_*_matrix functions now work with CoglMatrix types
Since the CoglMatrix type was added for supporting texture matrices recently
it made sense to be consistent accross the Cogl API and use the Cogl type
over the GL style GLfloat m[16] arrays.
2009-02-23 10:49:35 +00:00
Neil Roberts
fa996734cf [cogl-gles2-wrapper] Actually call glActiveTexture
cogl_wrap_glActiveTexture needs to call the GL version of
glActiveTexture otherwise the subsequent calls to glBindTexture will
all be using texture unit 0. This fixes test-cogl-multitexture.
2009-02-20 16:37:20 +00:00
Neil Roberts
b0df99fbad [cogl-gles2-wrapper] Convert texture unit settings to be a static sized array
Previously the texture unit settings were stored in growable GArrays
and every time a new texture unit was encountered it would expand the
arrays. However the array wasn't copied when stored in a
CoglGles2WrapperSettings struct so all settings had the same
array. This meant that it wouldn't detect that a different program is
needed if a texture unit is disabled or enabled.

The texture unit settings arrays are all now a fixed size and the
enabledness of each unit is stored in a bit mask. Therefore the
settings can just be copied around by assignment as before.

This puts a limit on the number of texture units accessible by Cogl
but I think it is worth it to make the code simpler and more
efficient. The material API already poses a limit on the number of
texture units it can use.
2009-02-20 15:59:13 +00:00
Emmanuele Bassi
3c073d82c7 [cogl] Provide GTypes for COGL types
COGL types should be registered inside the GType system, for
bindings and type checking inside properties and signals.

CoglHandle is a boxed type with a ref+unref semantics; slightly evil
from a bindings perspective (we cannot associate custom data to it),
but better than nothing.

The rest of the exposed types are enumerations or bitmasks.
2009-02-19 12:02:42 +00:00
Emmanuele Bassi
63ae25972e [cogl] Add cogl_is_material to cogl-material.h
The COGL_DEFINE_HANDLE macro generates a cogl_is_<type> function
as well, to check whether a CoglHandle opaque pointer is of type
<type>.

The handle for CoglMaterial does not export cogl_is_material() in
its installed header.
2009-02-19 11:55:54 +00:00
Emmanuele Bassi
5bdcfd288c Initialize a variable to avoid warnings
The gl_mode variable was not initialized, and the compiler complained
when using the anal-retentive compiler flags.
2009-02-18 18:45:58 +00:00
Robert Bragg
d2fe1fda31 [cogl-color.c] #include fix for the cogl_set_source_color prototype
cogl.h wasn't being included so we got a compiler warning
2009-02-18 16:19:14 +00:00
Robert Bragg
03018f0c2a [Cogl] Renames cogl_paint_init to cogl_clear and adds a cogl_disable_fog function
cogl_paint_init was a bit too miscellaneous; it mainly cleared the color, depth
and stencil buffers but arbitrarily it also disabled fogging and lighting.

It no longer disables lighting, since we know Cogl never enables lighting and
disabling of fog is now handled with a seperate function.

Since I noticed cogl_set_fog was taking a density argument documented as
"Ignored" I've also added a mode argument to cogl_set_fog which exposes the
exponential fog modes which can make use of the density.
2009-02-18 16:00:52 +00:00
Robert Bragg
2b5a72dde5 [Cogl] cogl_clip_{set*,unset} renamed to cogl_clip_{push*,pop}
This is so they self document the stacking semantics of the cogl clip API
2009-02-18 16:00:51 +00:00
Neil Roberts
9e10dc402f Call glActiveTexture and glClientActiveTexture through cogl_get_proc_address
All GL functions that are defined in a version later than 1.1 need to
be called through cogl_get_proc_address because the Windows GL DLL
does not export them to directly link against.
2009-02-16 12:46:36 +00:00
Robert Staudinger
f17437124e [build] Add cogl.h to the built sources list
The main COGL header file is generated at configure time. If something
changes in the template, though, the file will not be regenerated.

Adding cogl.h to the BUILT_SOURCES list will allow the regeneration to
happen.
2009-02-12 12:42:58 +00:00
Robert Bragg
b4f9c8204d [docs] Various gtk-doc updates for Cogl
This hides a number of internal structs and enums from the docs, and moves
some functions to more appropriate sections as well as misc description
updates (mostly for the vertex buffer api)
2009-02-09 14:33:14 +00:00
Robert Bragg
d01e3cd802 [cogl-vertex-buffer] Some fixes for texturing and color arrays
Fixes some blending issues when using color arrays since we were
conflicting with the cogl_enable state + fixes a texture layer
validation bug.

Adds a basic textured triangle to test-vertex-buffer-contiguous.
2009-02-09 14:15:06 +00:00
Robert Bragg
4a110afe08 [cogl-material] Fixes some dirty flag checks
Flushing material layers wasn't clearing the right dirty flag and
some of the tests used to avoid re-submitting GL state weren't
complete.
2009-02-09 14:15:06 +00:00
Robert Bragg
fa55c096d8 [Cogl] Renames cogl_fog_set to cogl_set_fog for consistency
More things follow the <object>_set_<property> convention.
2009-02-09 14:15:06 +00:00
Neil Roberts
05c7e5a97c [cogl-texture] Fix offset to next quad when flushing the log
When the quad log contains multiple textures (such as when a sliced
texture is drawn) it dispatches the log with multiple calls to
flush_quad_batch and walks a pointer along the list of vertices.
However this pointer was being incremented by only one vertex so the
next quad would be drawn with three of the vertices from the last
quad.
2009-02-05 20:29:25 +00:00
Neil Roberts
8e44874a93 [cogl-gles2-wrapper] Remove the FIXME to adjust the fragment color
Removed some debugging code which sets the r and g values to 1 in the
fragment shader.
2009-02-02 22:02:47 +00:00
Neil Roberts
49359407b0 [cogl-texture] Fix the count for the number of enabled arrays
The quad drawing code keeps track of the number of texture units that
have the tex coord array enabled so that in the next call it can
disabled any that are no longer enabled. However it was using 'i+1' as
the count but 'i' is already set to 'n_layers' from the previous for
loop.

Therefore it was disabling an extra texture unit. This doesn't
normally matter but it was causing GLES 2 to pointlessly realize an
extra unit.
2009-02-02 22:01:47 +00:00
Neil Roberts
e88de5f5fd Fix building GLES 2 after the material branch merge
- In cogl-material.h it directly sets the values of the
  CoglMaterialLayerCombineFunc to some GL_* constants. However these
  aren't defined in GLES 2 beacuse it has no fixed function texture
  combining. Instead the CGL_* versions are now used. cogl-defines.h
  now sets these to either the GL_* version if it is available,
  otherwise it directly uses the number.

- Under GLES 2 cogl-material.c needs to access the CoglTexture struct
  so it needs to include cogl-texture-private.h

- There are now #define's in cogl-gles2-wrapper.h to remap the GL
  function names to the wrapper names. These are disabled in
  cogl-gles2-wrapper.c by defining COGL_GLES2_WRAPPER_NO_REMAP.

- Added missing wrappers for glLoadMatrixf and glMaterialfv.

- Renamed the TexEnvf wrapper to TexEnvi because the latter is used
  instead from the material API.
2009-02-02 21:57:41 +00:00
Neil Roberts
edbe9a0377 [cogl-material] Always bind the new texture handle
Cogl previously tried to cache the currently bound texture when
drawing through the material API to avoid excessive GL calls. However,
a few other places in Cogl and Clutter rebind the texture as well so
this can cause problems.

This was causing shaped windows to fail in Mutter because
ClutterGLXTexturePixmap was binding a different texture to update it
while the second texture unit was still active which meant the mask
texture would not be selected when the shaped window was drawn
subsequent times.

Ideally we would fix this by providing a wrapper around glBindTexture
which would affect the cached value. The cache would also have to be
cleared if a selected texture was deleted.
2009-02-02 14:53:23 +00:00
Emmanuele Bassi
bb6202a1a1 Add cogl-material-private.h to the source files
The material-private.h file was not added to the dist files and
caused a build failure.
2009-01-29 16:00:15 +00:00
Emmanuele Bassi
86aba661bd Fix a variable masking warning
The usual issue with math.h defined symbols.
2009-01-29 13:31:51 +00:00
Neil Roberts
f1bae778ce [cogl] Add an NULL terminator to the call to material_flush_gl_state
This fixes a compiler warning and a potential crash.
2009-01-29 12:21:56 +00:00
Robert Bragg
6516dd3033 Another Cogl gl vs gles normalizaion pass
This tries to make a number of files more comparable with the intention of
moving some code into cogl/common/

Files normalized:
 cogl.c
 cogl-context.c
 cogl-context.h
 cogl-texture.c
2009-01-28 17:20:16 +00:00
Robert Bragg
081f2056bc Removes cogl_color_set_from_4d as it may mislead people.
Someone not sure which cogl_color_set_from_* version is "best" may use
set_from_4d because taking doubles implies higher precision. Currently
it doesn't have any advantage.
2009-01-28 17:20:15 +00:00
Robert Bragg
ef4052c18d Changes cogl_rectangle to take x1, y1, x2, y2 args not x1, y1, width, height
This makes it consistent with cogl_rectangle_with_{multi,}texture_coords.
Notably the reason cogl_rectangle_with_{multi,}texture_coords wasn't changed
instead is that the former approach lets you describe back facing rectangles.
(though technically you could pass negative width/height values to achieve
 this; it doesn't seem as neat.)
2009-01-28 17:20:15 +00:00
Robert Bragg
6048a0544a Adds some debug code to _cogl_journal_flush_quad_batch
The code is #if 0 guarded, but when uncommented it outlines all drawn
rectangles with an un-blended red, green or blue border. This may e.g. help
with debugging texture slicing issues or blending issues, plus it looks quite
cool.
2009-01-28 17:20:15 +00:00
Neil Roberts
d7c275f5e5 [cogl-texture] Fix order of tex coords when compensating for waste
When drawing a texture with waste in _cogl_multitexture_unsliced_quad
it scales the texture coordinates so that the waste is not
included. However the formula was the wrong way around so it was
calculating as if the texture coordinates are ordered x1,x2,y1,y2 but
it is actually x1,y1,x2,y2.
2009-01-28 12:57:06 +00:00
Neil Roberts
e72042648c [cogl-texture] Reset size of vertex log after drawing a polygon
Otherwise trying to render a rectangle after a polygon doesn't work
because it expects the array to be empty when it starts logging
vertices.
2009-01-28 12:24:11 +00:00
Neil Roberts
eda1d08f76 Fix rectangles_with_multitexture_coords for sliced without tex coords
When the texture is sliced it drops back to a fallback function and
passes it the texture coordinates from the rectangle. However if no
tex coords are given it would crash. Now it passes the default
0.0->1.0 tex coords instead.
2009-01-28 12:24:10 +00:00
Neil Roberts
7df1987652 Fix _cogl_texture_unsliced_quad when no texture coordinates are given
If no texture coordinates are given then texture_unsliced_quad tries
to generate its own coordinates. However it also tries to read the
texture coordinates to check if they are in [0.0,1.0] range so it will
crash before it reaches that.
2009-01-28 12:24:10 +00:00
Emmanuele Bassi
9b7fa2cb04 Reuse the layers list
Instead of getting the layers list twice from the Material, we
can reuse the list when we need to retrieve the first layer.
2009-01-28 11:57:49 +00:00
Emmanuele Bassi
b3e02869cd Remove gtk-doc annotation
The _cogl_material_flush_layers_gl_state() function is static,
so it should not have a gtk-doc annotation.
2009-01-28 11:57:49 +00:00
Neil Roberts
2722909b76 Fix building GLES after _cogl_texture_handle_from_pointer got removed
Commit a688b1db removed the function and replaced it with a direct
cast. This was also being used in the GL ES so the build broke.
2009-01-28 10:56:47 +00:00
Emmanuele Bassi
1b578fb9c7 [docs] Documentation fixes
Update the COGL API reference to avoid a lot of warnings coming
from gtk-doc.
2009-01-27 16:53:01 +00:00
Emmanuele Bassi
a688b1db01 Fallout from cogl-material merge
When enabling the maintainer CFLAGS the compiler got very angry
at the code that has been merged.
2009-01-27 16:02:04 +00:00
Robert Bragg
840941fdfe Adds padding to CoglColor to future proof it a bit
This adds enough padding to allow us to change to an internal float storage
for the color components if needs be in the future.
2009-01-27 15:20:16 +00:00
Robert Bragg
70d7d16f13 Support scaling on the z axis with cogl_scale
This simply adds a z argument to cogl_scale and updates clutter-actor.c
to pass 1.0 for the z scale.
2009-01-27 15:20:13 +00:00
Robert Bragg
e9a45c7744 Merge branch 'cogl-material'
Conflicts:

	clutter/cogl/gl/cogl-texture.c
	clutter/cogl/gles/cogl-primitives.c

* cogl-material:
 clutter-{clone-,}texture weren't updating their material opacity.
 Updates GLES1 support for CoglMaterial
 Normalizes gl vs gles code in preperation for synching material changes
 Removes cogl_blend_func and cogl_alpha_func
 Fully integrates CoglMaterial throughout the rest of Cogl
 [cogl-material] Restore the GL_TEXTURE_ENV_MODE after material_rectangle
 [cogl-material] Make the user_tex_coords parameter of _rectangle const
 [test-cogl-material] Remove return value from material_rectangle_paint
 Add cogl-material.h and cogl-matrix.h to libclutterinclude_HEADERS
 [cogl-material] improvements for cogl_material_rectangle
 [cogl-material] Adds a cogl_material_set_color function
 [cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL
 [cogl-material] Converts clutter-texture/clutter-clone-texture to the material API
 [doc] Hooks up cogl-material reference documentation
 Updates previous GLES multi-texturing code to use CoglMaterial
 Adds a CoglMaterial abstraction, which includes support for multi-texturing
 [doc] Hooks up cogl-matrix reference documentation
 Adds CoglMatrix utility code
 [tests] Adds an interactive unit test for multi-texturing
 [multi-texturing] This adds a new cogl_multi_texture API for GL,GLES1 + GLES2
2009-01-27 15:19:34 +00:00
Robert Bragg
4a7fa6d0fa Updates GLES1 support for CoglMaterial
This updates cogl/gles in line with the integration of CoglMaterial throughout
Cogl that has been done for cogl/gl.

Note: This is still buggy, but at least it builds again and test-actors works.
Some GLES2 specific changes were made, but these haven't been tested yet.
2009-01-27 14:26:50 +00:00
Robert Bragg
60e81f0fda Normalizes gl vs gles code in preperation for synching material changes
This changes all GLES code to use the OpenGL function names instead of
the cogl_wrap_* names. For GLES2 we now define the OpenGL name to point
to the wrapper, as opposed to defining the wrapper to point to the
OpenGL name for GLES1.

I've also done a quick pass through gl/cogl.c and gles/cogl.c to make
them more easily comparable. (most of the code is now identical)
2009-01-27 14:26:50 +00:00
Robert Bragg
427fff032e Removes cogl_blend_func and cogl_alpha_func
The GL blend function and alpha function are now controlled by the material
code, and even internally Cogl should now be using the material API when
it needs control of these.
2009-01-27 14:26:49 +00:00
Robert Bragg
5985eef44c Fully integrates CoglMaterial throughout the rest of Cogl
This glues CoglMaterial in as the fundamental way that Cogl describes how to
fill in geometry.

It adds cogl_set_source (), which is used to set the material which will be
used by all subsequent drawing functions

It adds cogl_set_source_texture as a convenience for setting up a default
material with a single texture layer, and cogl_set_source_color is now also
a convenience for setting up a material with a solid fill.

"drawing functions" include, cogl_rectangle, cogl_texture_rectangle,
cogl_texture_multiple_rectangles, cogl_texture_polygon (though the
cogl_texture_* funcs have been renamed; see below for details),
cogl_path_fill/stroke and cogl_vertex_buffer_draw*.

cogl_texture_rectangle, cogl_texture_multiple_rectangles and
cogl_texture_polygon no longer take a texture handle; instead the current
source material is referenced. The functions have also been renamed to:
cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords
and cogl_polygon respectivly.

Most code that previously did:
  cogl_texture_rectangle (tex_handle, x, y,...);
needs to be changed to now do:
  cogl_set_source_texture (tex_handle);
  cogl_rectangle_with_texture_coords (x, y,....);

In the less likely case where you were blending your source texture with a color
like:
  cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */
  cogl_texture_rectangle (tex_handle, x, y,...);
you will need your own material to do that:
  mat = cogl_material_new ();
  cogl_material_set_color4ub (r,g,b,a);
  cogl_material_set_layer (mat, 0, tex_handle));
  cogl_set_source_material (mat);

Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use
cog_rectangle_with_texure_coords since these are the coordinates that
cogl_rectangle will use.

For cogl_texture_polygon; as well as dropping the texture handle, the
n_vertices and vertices arguments were transposed for consistency. So
code previously written as:
  cogl_texture_polygon (tex_handle, 3, verts, TRUE);
need to be written as:
  cogl_set_source_texture (tex_handle);
  cogl_polygon (verts, 3, TRUE);

All of the unit tests have been updated to now use the material API and
test-cogl-material has been renamed to test-cogl-multitexture since any
textured quad is now technically a test of CoglMaterial but this test
specifically creates a material with multiple texture layers.

Note: The GLES backend has not been updated yet; that will be done in a
following commit.
2009-01-27 14:26:39 +00:00
Neil Roberts
ba068f6bc9 Fix the Cogl primitives for the GLES backend
The Cogl primitives broke for GLES 1.1 and 2 after the cogl-float
branch merge.

CoglPathNode was still being declared as GLfixed for the GLES backend
but it was being filled with float values so they were all ending up
as numbers < 1.

glDrawArrays was being called with GL_FIXED so this has been changed
to GL_FLOAT.

The scanline rasterizer had a leftover hardcoded ClutterFixed constant
to add a small amount to the height of each line.

struct _CoglFloatVec2 has been removed because it is no longer used
anywhere.
2009-01-24 00:26:51 +00:00
Robert Bragg
3d07e34cc5 Merge commit 'origin/master' into cogl-material
Conflicts:

	clutter/clutter-texture.c
	clutter/cogl/cogl-texture.h
	clutter/cogl/cogl.h.in
	clutter/cogl/common/Makefile.am
	clutter/cogl/gl/Makefile.am
	clutter/cogl/gles/Makefile.am
	clutter/cogl/gles/cogl-gles2-wrapper.c
	clutter/cogl/gles/cogl-gles2-wrapper.h
2009-01-23 15:23:49 +00:00
Emmanuele Bassi
915d9ec7ca Split maintainer-flags from the compiler flags
The maintainer compiler flags we use trigger warnings and errors
in the autogenerated code that gtk-doc creates to scan the header
and source files. Since we cannot control that, and we must run
a distcheck with both --enable-gtk-doc and --enable-maintainer-flags
turned on, we need to use less-strict compiler flags when inside
the doc/reference subdirectories.

The way to do this is to split the maintainer compiler flags into
their own Makefile variable, called MAINTAINER_CFLAGS. The we
can use $(MAINTAINER_CFLAGS) in the INCLUDES or _CFLAGS sections
of each part of the source directories we wish to check with the
anal retentiveness suited for maintainers.
2009-01-23 13:09:51 +00:00
Emmanuele Bassi
20973bd29f Fix compiler warnings
The maintainer-flags option discovered the usual amount of
collisions and compiler warnings we have to fix in order to
get distcheck to pass.
2009-01-23 13:08:46 +00:00
Neil Roberts
634cdeab1f Fix some failures from the fixed-to-float script in cogl-texture
The script converted calls to COGL_FIXED_MUL(x,y) to (x*y). However
this fails for cases like this:

 COGL_FIXED_MUL(a + b, c)

which become

 (a + b * c)

The meaning of this is of course different because multiplication has
a higher precedence than addition.

This was causing breakages in cogl_texture_quad_sw when the vertex
coordinates are not in increasing order. This was the case in
test-backface-culling when NPOTs are not available.
2009-01-22 17:44:24 +00:00
Emmanuele Bassi
e7d533f176 Improve accuracy of clutter_sinx()
Improve clutter_sinx() by replacing the low precision CFX_SIN_STEP
with a multiply/divide pair. This reduces the maximum error from
1.8e-04 to 2.4e-05.

http://bugzilla.openedhand.com/show_bug.cgi?id=1314

Based on a patch by Owen W. Taylor <otaylor@fishsoup.net>
2009-01-22 15:59:23 +00:00
Emmanuele Bassi
e1ab6f972e [gles] Fix computation of camera distance
Port the fix in commit f409b58e to the GLES implementation of
COGL.
2009-01-22 14:52:34 +00:00
Owen W. Taylor
f409b58e89 Fix computation of camera distance
Compute the value of the camera distance as exactly half the xx
component of the projection matrix. The heuristically derived
value for 60 degrees was off by about 0.016%, causing noticeable
blurring, and other field of view angles which didn't have the
heuristic adjustment off by much more.

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-01-22 14:17:16 +00:00
Emmanuele Bassi
0be613109e [docs] Remove sources of warnings in API references 2009-01-21 16:41:18 +00:00
Emmanuele Bassi
c9739e6aef Change the COGL texture constructor to use flags
Boolean arguments for functions are pretty evil and usually
lead to combinatorial explosion of parameters in case multiple
settings are added.

In the case of the COGL texture constructors we have a boolean
argument for enabling the auto-mipmapping; it is conceivable that
we might want to add more settings for a COGL texture without
breaking API or ABI compatibility, so the boolean argument should
become a bitmask.

The internals have not been changed: instead of checking for
a non-zero value, we check for a bitmask being set.
2009-01-21 10:14:29 +00:00
Robert Bragg
e338245827 Renames the mesh api to the "vertex buffer api".
This better reflects the fact that the api manages sets of vertex attributes,
and the attributes really have no implied form. It is only when you use the
attributes to draw that they become mesh like; when you specify how they should
be interpreted, e.g. as triangle lists or fans etc. This rename frees up the
term "mesh", which can later be applied to a concept slightly more fitting.
E.g. at some point it would be nice to have a higher level abstraction that
sits on top of cogl vertex buffers that adds the concept of faces. (Somthing
like Blender's mesh objects.) There have also been some discussions over
particle engines, and these can be defined in terms of emitter faces; so some
other kind of mesh abstraction might be usefull here.
2009-01-20 22:29:35 +00:00
Robert Bragg
a2cf7e4a19 [Automatic fixed-to-float.sh change] Applies a number fixed to float patches
To deal with all the corner cases that couldn't be scripted a number of patches
were written for the remaining 10% of the effort.

Note: again no API changes were made in Clutter, only in Cogl.
2009-01-20 16:20:54 +00:00
Robert Bragg
e82f656590 [Automatic fixed-to-float.sh change] Applies all scripted changes
This is the result of running a number of sed and perl scripts over the code to
do 90% of the work in converting from 16.16 fixed to single precision floating
point.

Note: A pristine cogl-fixed.c has been maintained as a standalone utility API
      so that applications may still take advantage of fixed point if they
      desire for certain optimisations where lower precision may be acceptable.

Note: no API changes were made in Clutter, only in Cogl.

Overview of changes:
- Within clutter/* all usage of the COGL_FIXED_ macros have been changed to use
the CLUTTER_FIXED_ macros.

- Within cogl/* all usage of the COGL_FIXED_ macros have been completly stripped
and expanded into code that works with single precision floats instead.

- Uses of cogl_fixed_* have been replaced with single precision math.h
alternatives.

- Uses of COGL_ANGLE_* and cogl_angle_* have been replaced so we use a float for
angles and math.h replacements.
2009-01-20 16:20:54 +00:00
Neil Roberts
52d7b7be73 [fixed-to-float-patches] Move the changes to gles2-wrapper.h into the patch
It looks like the changes to cogl-gles2-wrapper.h were accidentally
committed to the actual file instead of the patch in commit
de27da0e. This commit moves the changes back into the patch so
cogl-gles2-wrapper.h is reverted back to master.
2009-01-16 10:50:53 +00:00
Neil Roberts
4e94500a2a Merge branch 'master' into cogl-float
The patches have been updated to apply cleanly.

The patches for the g_warnings in clutter-actor.c have been removed
because master now uses CLUTTER_UNITS_FORMAT so they aren't
necessary. The clutter-units.h patch now sets CLUTTER_UNITS_FORMAT to
'f'.
2009-01-15 18:26:22 +00:00
Neil Roberts
9339334a43 Fix GLES backends after merging the async-textures branch
The changes from the GL version of cogl-texture.c have been mirrored
in the GLES version. This adds the cogl_texture_new_from_bitmap
function and fixes the build errors.
2009-01-15 18:09:54 +00:00
Emmanuele Bassi
110489ee58 Merge branch 'async-textures'
* async-textures:
  Whitespace fixes in ClutterTexture
  [async-loading] Do not force the texture size on async load
  [async-loading] Update asynchronous image loading
  Add API for extracting image size from a file
  Update/clean and apply the async-texture patch from bug #1144
2009-01-14 15:16:41 +00:00
Neil Roberts
de114dead7 Fix GLES 2 after the multiple-texture-rectangle branch merge
The GLES 2 wrapper needs to set up some state before each
draw. Previously this was acheived by wrapping glDrawArrays. Since the
multiple-texture-rectangle branch merge, glDrawElements is used
instead so we also need a wrapper for that.

It was also directly calling glBindTexture. GLES 2 uses a wrapper for
this function so that it can cope with GL_ALPHA format textures. The
format of the current texture needs to be stored as well as the target
and object number for this to work.
2009-01-13 16:52:39 +00:00
Neil Roberts
453697fcad Update gtk-doc 'Since' field for cogl_texture_multiple_rectangles
The function has been backported to the 0.8 branch so it will also be
available in Clutter 0.8.6
2009-01-13 16:44:31 +00:00
Robert Bragg
616c082a7c Merge commit 'origin/master' into cogl-material
Conflicts:

	clutter/clutter-texture.c
	clutter/cogl/cogl-texture.h
	clutter/cogl/gles/cogl-context.c
	clutter/cogl/gles/cogl-context.h
2009-01-13 13:37:38 +00:00
Robert Bragg
de27da0e5b [cogl/gles] Fixes for building for GLES 1 using floats
* This adds GLfixed -> GLfloat conversion
* redefines cogl_wrap_glBlahx macros as glBlahf
* Other misc fixes (mostly corresponding to cogl/gl equivalents)
2009-01-12 17:21:09 +00:00
Emmanuele Bassi
1c114be31a Add API for extracting image size from a file
For the asynchronous loading we need a function call that parses
a file, given its path, and retrieves the image width and height.

This commit adds cogl_bitmap_get_size_from_file() to the CoglBitmap
API.
2009-01-12 16:52:20 +00:00
Emmanuele Bassi
946c075a2a Merge branch 'master' into async-textures 2009-01-12 14:43:53 +00:00
Emmanuele Bassi
ed991fe3c5 Declare G_LOG_DOMAIN for COGL
In order to get properly namespaced debug and warning messages
inside COGL code we need to define the G_LOG_DOMAIN macro.
2009-01-12 11:21:06 +00:00
Emmanuele Bassi
2693ea3ddc [docs] Documentation warnings
Fix the various warnings issued by gtk-doc when enabling the API
reference generation for both COGL and Clutter.
2009-01-09 14:26:35 +00:00
Chris Lord
2cea22e6a0 Update/clean and apply the async-texture patch from bug #1144 2009-01-07 17:02:43 +00:00
Neil Roberts
805b88d4c0 Merge branch multiple-texture-rectangle into master
Bug 1289 - Draw multiple glyphs at once

The multiple-texture-rectangle branch adds a new Cogl texture function
called cogl_texture_multiple_rectangles which is used to draw multiple
rectangles out of a texture using a single GL call. This is
significantly faster than drawing the rectangles with individual calls
on some platforms. The Pango renderer now uses this to speed up
rendering.

The conflicts are just due to the whitespace fixes in cb569a5.

Conflicts:

	clutter/cogl/gl/cogl-context.c
	clutter/cogl/gl/cogl-context.h
	clutter/cogl/gl/cogl-texture.c
2009-01-07 16:25:26 +00:00
Neil Roberts
12ea2933bd [cogl-material] Restore the GL_TEXTURE_ENV_MODE after material_rectangle
The rest of Cogl expects the texture mode to be GL_MODULATE so it
needs to be restored after calling cogl_material_rectangle. Otherwise
cogl_texture_rectangle will fail to blend with the Cogl color properly
and all of the labels will be black.
2009-01-06 18:24:57 +00:00
Neil Roberts
606d34f2aa [cogl-material] Make the user_tex_coords parameter of _rectangle const
The array is only used for input so it should be const.
2009-01-06 16:09:55 +00:00
Neil Roberts
f5288b1918 Add cogl-material.h and cogl-matrix.h to libclutterinclude_HEADERS
Otherwise they won't get installed
2009-01-06 15:53:35 +00:00
Robert Bragg
377f114046 [cogl-material] improvements for cogl_material_rectangle
The API has been changed to take an explicit length for the number of
texture coordinates passed, and it's now documented that if there are
more layers to the current material than the number of texture coords
passed, then default coordinates will be generated for the other
layers.

cogl_material_rectangle should now handle the case where a single
sliced texture is supplied as a material layer by falling back to
cogl_texture_rectangle. We are nearly at the point that
cogl_texture_rectangle could be deprecated. A few issues remain
though, such as not considering waste in cogl_material_rectangle.
2008-12-24 01:35:33 +00:00
Robert Bragg
e77a784714 [cogl-material] Adds a cogl_material_set_color function
The other colors of a material; such as the ambient and diffuse color are
only relevent when we can enable lighting. This adds a basic unlit
color property.

Later cogl_set_source_color can be integrated to either modify the color
of the current source material, or maintain a special singlton CoglMaterial
that is modified by calls to cogl_set_source_color and implicitly made
current.
2008-12-24 01:35:02 +00:00
Robert Bragg
462c45da3c [cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL
This flattens the three functions: cogl_material_flush_gl_material_state,
.._flush_gl_alpha_func and .._flush_gl_blend_func into one:
cogl_flush_material_gl_state which doesn't takes a material handle. (the handle
is instead taken from the context.)

This has allows us to avoid re-submitting some state to OpenGL when the
material has not been replaced.

Note: Avoiding redundant state changes for material layers isn't dealt with
in this patch.
2008-12-24 01:33:23 +00:00
Robert Bragg
bb938ac4ff Merge branch 'master' into cogl-material
Conflicts:

	clutter/cogl/gl/cogl-context.c
	clutter/cogl/gl/cogl-context.h
2008-12-24 00:59:13 +00:00
Robert Bragg
cb569a5443 White space clean up across a number of files (only removing trailing spaces)
Removed trailing white space from the following files:
- clutter-clone-texture.c
- clutter-texture.c
- clutter-texture.h
- cogl/cogl-texture.h
- cogl/gl/cogl-context.c
- cogl/gl/cogl-texture.c
- cogl/gl/cogl-context.h
2008-12-24 00:48:32 +00:00
Robert Bragg
aee2589cc6 [doc] Hooks up cogl-material reference documentation
Adds some more gtk-doc comments to cogl-material.h, and adds a new section to
cogl-sections.txt
2008-12-22 16:35:52 +00:00
Robert Bragg
eb3b48e9ff Updates previous GLES multi-texturing code to use CoglMaterial
test-cogl-material now runs on GLES 1 using the PVR GLES1 SDK (though since
only 2 texture units are supported the third rotating light map doesn't show)

Note: It currently doesn't build for GLES 2.0
2008-12-22 16:35:52 +00:00
Robert Bragg
40b0bb4e95 Adds a CoglMaterial abstraction, which includes support for multi-texturing
My previous work to provide muti-texturing support has been extended into
a CoglMaterial abstraction that adds control over the texture combine
functions (controlling how multiple texture layers are blended together),
the gl blend function (used for blending the final primitive with the
framebuffer), the alpha function (used to discard fragments based on
their alpha channel), describing attributes such as a diffuse, ambient and
specular color (for use with the standard OpenGL lighting model), and
per layer rotations. (utilizing the new CoglMatrix utility API)

For now the only way this abstraction is exposed is via a new
cogl_material_rectangle function, that is similar to cogl_texture_rectangle
but doesn't take a texture handle (the source material is pulled from
the context), and the array of texture coordinates is extended to be able
to supply coordinates for each layer.

Note: this function doesn't support sliced textures; supporting sliced
textures is a non trivial problem, considering the ability to rotate layers.
Note: cogl_material_rectangle, has quite a few workarounds, for a number of
other limitations within Cogl a.t.m.
Note: The GLES1/2 multi-texturing support has yet to be updated to use
the material abstraction.
2008-12-22 16:35:52 +00:00
Robert Bragg
63047e1907 [doc] Hooks up cogl-matrix reference documentation
Adds a few more gtk-doc notes to cogl-matrix.h, and adds a new section to
cogl-sections.txt
2008-12-22 16:35:52 +00:00
Robert Bragg
fa8d6dc69b Adds CoglMatrix utility code 2008-12-22 16:35:52 +00:00
Robert Bragg
ea643ca0f8 [multi-texturing] This adds a new cogl_multi_texture API for GL,GLES1 + GLES2
Multitexturing allows blending multiple layers of texture data when texturing
some geometry. A common use is for pre-baked light maps which can give nice
lighting effects relativly cheaply. Another is for dot-3 bump mapping, and
another is applying alpha channel masks.

The dot-3 bump mapping would be really nice one day, but currently cogl doesn't
support lighting so that's not dealt with in this patch.

notable limitations:
- It can only texture rectangles a.t.m - and like cogl_texture_rectangle there
is no support for rotated texturing.
- Sliced textures are not supported. I think I've figured out how to handle
layers with different slice sizes at least for rectangular geometry, but I'm
not sure how complex it becomes once rotations are possible and texturing
arbitrary cogl_polygons.
- Except for this new API, cogl still doesn't know about more than one texture
unit, and so has no way of caching any enables related to other units. So that
things don't break it's currently necessary to disable anything to do with
additional units as soon as we are done with them which isn't ideal.
- No clutter API yet.
2008-12-22 16:35:51 +00:00
Neil Roberts
e21fee39b4 Merge commit 'git-svn' into multiple-texture-rectangle 2008-12-10 12:25:25 +00:00
Neil Roberts
dc6545ccd1 * clutter/cogl/gl/cogl.c:
* clutter/cogl/gl/cogl-defines.h.in:
	* clutter/cogl/gl/cogl-context.h:
	* clutter/cogl/common/cogl-mesh.c: Rename the glBufferDataSub
	function to glBufferSubData. When calling glXGetProcAddress with
	the former Mesa returns a stub dispatch function which will
	segfault if you try to use it. With NVIDIA it returns NULL so
	_cogl_features_init decides the card doesn't have VBO support.
2008-12-10 12:13:20 +00:00
Neil Roberts
9537f8e4ae Use a single index array
There's no point in clearing the index array because it is always the
same sequence of indices regardless of the vertices. Instead it is
just added to when there are more vertices than ever before.
2008-12-09 18:03:29 +00:00
Neil Roberts
0bedd891fb Support cogl_texture_multiple_rectangles in GL ES backend 2008-12-09 15:10:33 +00:00
Neil Roberts
8fc949bfaf Minor fix to indentation in gl/cogl-texture.c 2008-12-09 15:01:10 +00:00
Neil Roberts
73974de482 Add gtk-doc for cogl_texture_multiple_rectangles 2008-12-09 13:20:32 +00:00
Neil Roberts
bf72b8cdc3 Use glDrawRangeElements to share vertices
When drawing a quad from cogl_texture_multiple_rectangles share two of
the vertices in each triangle by using indices.
2008-12-09 13:02:28 +00:00
Neil Roberts
bafcfca797 Merge commit 'git-svn' into multiple-texture-rectangle
Conflicts:

	clutter/cogl/gl/cogl-texture.c
2008-12-04 18:20:57 +00:00
Neil Roberts
e3f077d55f Use the correct length in _cogl_texture_flush_vertices
The check for whether there are any rectangles to flush was using the
wrong value so it would always flush.

Thanks to Johan Bilien for spotting.
2008-12-04 17:50:03 +00:00
Neil Roberts
98035e4d8a Bug 1297 - Bring back support for GL_ARB_texture_rectangle
* clutter/cogl/gl/cogl-texture.c (cogl_texture_new_from_foreign,
	(_cogl_texture_quad_hw, cogl_texture_polygon),
	(_cogl_texture_quad_sw): Support GL_ARB_texture_rectangle textures

	* clutter/glx/clutter-glx-texture-pixmap.c: Use rectangle textures
	when NPOTs are not available or it is forced by the
	CLUTTER_PIXMAP_TEXTURE_RECTANGLE environment variable.

	* clutter/cogl/gl/cogl.c (cogl_enable): Allow enabling
	GL_TEXTURE_RECTANGLE_ARB.
2008-12-04 17:24:33 +00:00
Neil Roberts
89e7552ca3 Bug 1172 - Disjoint paths and clip to path
* clutter/cogl/cogl-path.h:
	* clutter/cogl/common/cogl-primitives.c:
	* clutter/cogl/common/cogl-primitives.h:
	* clutter/cogl/gl/cogl-primitives.c:
	* clutter/cogl/gles/cogl-primitives.c: Changed the semantics of
	cogl_path_move_to. Previously this always started a new path but
	now it instead starts a new disjoint sub path. The path isn't
	cleared until you call either cogl_path_stroke, cogl_path_fill or
	cogl_path_new. There are also cogl_path_stroke_preserve and
	cogl_path_fill_preserve functions.

	* clutter/cogl/gl/cogl-context.c:
	* clutter/cogl/gl/cogl-context.h:
	* clutter/cogl/gles/cogl-context.c:
	* clutter/cogl/gles/cogl-context.h: Convert the path nodes array
	to a GArray.

	* clutter/cogl/gl/cogl-texture.c:
	* clutter/cogl/gles/cogl-texture.c: Call cogl_clip_ensure

	* clutter/cogl/common/cogl-clip-stack.c:
	* clutter/cogl/common/cogl-clip-stack.h: Simplified the clip
	stack code quite a bit to make it more maintainable.  Previously
	whenever you added a new clip it would go through a separate route
	to immediately intersect with the current clip and when you
	removed it again it would immediately rebuild the entire clip. Now
	when you add or remove a clip it doesn't do anything immediately
	but just sets a dirty flag instead.

	* clutter/cogl/gl/cogl.c:
	* clutter/cogl/gles/cogl.c: Taken away the code to intersect
	stencil clips when there is exactly one stencil bit. It won't work
	with path clips and I don't know of any platform that doesn't have
	eight or zero stencil bits. It needs at least three bits to
	intersect a path with an existing clip. cogl_features_init now
	just decides you don't have a stencil buffer at all if you have
	less than three bits.

	* clutter/cogl/cogl.h.in: New functions and documentation.

	* tests/interactive/test-clip.c: Replaced with a different test
	that lets you add and remove clips. The three different mouse
	buttons add clips in different shapes. This makes it easier to
	test multiple levels of clipping.

	* tests/interactive/test-cogl-primitives.c: Use
	cogl_path_stroke_preserve when using the same path again.

	* doc/reference/cogl/cogl-sections.txt: Document the new
	functions.
2008-12-04 13:45:09 +00:00
Neil Roberts
55cec1f651 Bug 1305 - NPOT textures unaligned to a pixel sometimes have
border artifacts

	* clutter/cogl/gl/cogl-texture.c: Set the wrap mode of a texture
	on demand

	Instead of setting the wrap mode once per texture at creation, it
	is now changed whenever the texture is drawn. The previous value
	is cached so that it isn't changed if the value is the same.

	This is used in _cogl_texture_quad_hw to only enable GL_REPEAT
	mode when the coordinates are not in the range [0,1]. Otherwise it
	can pull in pixels from the other edge when the texture is
	rendered off-pixel.
2008-12-01 16:27:54 +00:00
Neil Roberts
29505dd0ba Use GL_TRIANGLES for the texture vertex array
Most cards don't actually support GL_QUADS and they are deprecated in
GL 3.0 so there is a chance it will perform faster with GL_TRIANGLES
even though it has to submit two extra vertices.
2008-11-28 14:20:07 +00:00
Neil Roberts
b312cd2d55 Add cogl_texture_multiple_rectangles
This takes an array of sets of 8 floats to describe the rectangles. It
tries to send the geometry with a single glDrawArrays as far as
possible. cogl_texture_rectangle is now just a wrapper around
cogl_texture_multiple_rectangles.
2008-11-28 13:09:04 +00:00
Neil Roberts
10942e8e04 Make cogl_texture_rectangle use the vertex array
cogl_texture_quad_hw and _sw now just add vertices to the vertex
array. The last texture used is stored and if a different texture is
encountered then flushes the vertices. cogl_texture_rectangle always
flushes the vertices after calling either of the functions.
2008-11-28 12:33:19 +00:00
Neil Roberts
93ea1681bb Use a GArray for the texture vertices in cogl_texture_polygon
Previously it was a dynamic array that was manually reallocated.
2008-11-27 16:44:39 +00:00
Neil Roberts
ce189e7d77 * clutter/cogl/gl/cogl-texture.c (cogl_texture_rectangle): Fixed
the test for whether to use hardware tiling. Previously it assumed
	that texture coordinates are in increasing order but this is not
	the case since bug 1057 was fixed. The texture coordinates are now
	sorted later. It also allowed negative coordinates which doesn't
	make sense if the texture has waste.
2008-11-26 16:35:25 +00:00
Neil Roberts
8ff85615b3 * clutter/cogl/gl/cogl-texture.c (cogl_texture_polygon): Fix the
equation for calculating texture coordinates when using sliced
	textures. This became broken in revision 3520.
2008-11-24 12:27:48 +00:00
Neil Roberts
21617cc0f1 Bug 1271 - mingw compiling failed: undefined reference to
`_glDrawRangeElements@24'

	Resolve glDrawRangeElements with cogl_get_proc_address instead of
	calling it directly because functions defined in GL > 1.1 are not
	directly exported under Windows.

	* clutter/cogl/common/cogl-mesh.c: Use the function pointer from
	the context

	* clutter/cogl/gl/cogl-context.c (cogl_create_context): Initialise
	function pointer.

	* clutter/cogl/gl/cogl-context.h (CoglContext): Add a function
	pointer

	* clutter/cogl/gl/cogl-defines.h.in: Add a typedef for the
	function pointer.

	* clutter/cogl/gl/cogl.c (_cogl_features_init): Resolve
	glDrawRangeElements
2008-11-21 16:18:58 +00:00
Robert Bragg
2705547469 * clutter/cogl/common/cogl-mesh.c:
Re-works validate_custom_attribute_name() so it doesn't access an
	un-initialised variable.
2008-11-18 16:24:31 +00:00
Robert Bragg
39aa5c27b5 A comparison of gl/cogl-texture.c and gles/cogl-texture.c, to reduce
differences and improve maintainability.

	* clutter/cogl/gl/cogl-context.h:
	Adds a CoglTextureGLVertex typedef + texture_vertices and
	texture_vertices_size members to CoglContext for using vertex arrays
	like GLES does

	* clutter/cogl/gl/cogl-context.c:
	Initializes texture_vertices + texture_vertices_size members

	* clutter/cogl/gl/cogl-internal.h:
	Adds COGL_ENABLE_COLOR_ARRAY

	* clutter/cogl/gl/cogl.c:
	Add COGL_ENABLE_COLOR_ARRAY support to cogl_enable

	* clutter/cogl/gles/cogl-context.h:
	Change the CoglTextureGLVertex to use GLfloat for the position
	and texture coord attributes and GLubyte for the color.

	* clutter/cogl/gles/cogl-texture-private.h:
	Adds a wrap_mode member like GL has.

	* clutter/cogl/gl/cogl-texture.c
	* clutter/cogl/gles/cogl-texture.c:
	Improves the comparability of the files, such that the remaining
	differences, better reflect the fundamental differences needed
	between GL and GLES. Notably GL no longer uses glBegin/glEnd for
	submitting vertices, it uses vertex arrays like GLES and this gives
	a small but measurable fps improvement for test-text.
2008-11-18 16:24:09 +00:00
Robert Bragg
41ec02c8b5 * clutter/cogl/gl/cogl-internal.h
* clutter/cogl/gles/cogl-internal.h:
	Removes semicolon after the GE() macro since that breaks using it as a
	single statement.
2008-11-18 16:23:40 +00:00
Emmanuele Bassi
837d17aefc 2008-11-18 Emmanuele Bassi <ebassi@linux.intel.com>
* clutter/cogl/cogl-shader.h: Add a function for setting an
	integer uniform, similar to cogl_program_uniform_1f().

	* clutter/cogl/gl/cogl-program.c: Implement the GL version
	of cogl_program_uniform_1i().

	* clutter/cogl/gles/cogl-program.c: Implement the GLES version
	of cogl_program_uniform_1i().
2008-11-18 15:21:02 +00:00
Emmanuele Bassi
af0cb47570 2008-11-18 Emmanuele Bassi <ebassi@linux.intel.com>
Bug 1049 - Clutter doesn't support most GLSL uniforms (patch
	by Chris Lord and Neil Roberts)

	* README: Update release notes.

	* clutter/Makefile.am:
	* clutter/clutter-shader-types.[ch]: Add GValue types for
	shader values.

	* clutter/clutter-actor.[ch]: Update the shader API to use
	the newly added GValue support for GLSL shader uniform
	setters.

	* clutter/clutter-shader.[ch]: Add float and integer convenience
	API for single value GLSL uniform setters.

	* clutter/cogl/cogl-shader.h: Add new uniform setters.

	* clutter/cogl/gl/cogl-context.c:
	* clutter/cogl/gl/cogl-context.h:
	* clutter/cogl/gl/cogl-defines.h.in:
	* clutter/cogl/gl/cogl-program.c:
	* clutter/cogl/gl/cogl.c: Update the GL implementation of COGL
	to handle the GLSL uniform setters.

	* clutter/cogl/gles/cogl-gles2-wrapper.c:
	* clutter/cogl/gles/cogl-gles2-wrapper.h:
	* clutter/cogl/gles/cogl-internal.h:
	* clutter/cogl/gles/cogl-program.c: Update the GLES 2.0 implementation
	of COGL to handle the GLSL uniform setters.

	* doc/reference/clutter/clutter-sections.txt:
	* doc/reference/cogl/cogl-sections.txt: Update the documentation.

	* tests/interactive/test-fbo.c:
	* tests/interactive/test-shader.c: Update the shader tests.
2008-11-18 15:08:40 +00:00
Neil Roberts
0ae150e462 * clutter/cogl/gles/cogl-gles2-wrapper.h:
* clutter/cogl/gles/cogl-gles2-wrapper.c:
	Initialise the 'tex' sampler uniform to 0. The GLSL spec
	specifically says that you must initialize sampler uniforms. This
	fixes texturing for GLES 2 when using the PowerVR simulator via
	software Mesa.
2008-11-13 14:44:27 +00:00
Robert Bragg
3d2a1e2d81 Gets the mesh API working with GLES2
* clutter/cogl/common/cogl-mesh.c:
	Make sure we use the appropriate cogl_wrap_gl* funcs as appropriate

	* clutter/cogl/gles/cogl-gles2-wrapper.c
	* clutter/cogl/gles/cogl-gles2-wrapper.h:
	In our glColorPointer wrapper we needed to mark our color attribute
	as normalized.

	* tests/conform/Makefile.am:
	When creating unit test symlinks we use the -l gtester option to
	list tests, but when using the PVR SDK the test binary also spews
	out some extra info that caused lots of random symlinks to be
	created. We now grep for lines starting with a '/'

	* tests/conform/test-mesh-contiguous.c
	* tests/conform/test-mesh-mutability.c:
	Use cogl_set_source_color instead of directly calling glColor4ub
2008-11-13 14:28:16 +00:00
Emmanuele Bassi
c823bf9c83 2008-11-12 Emmanuele Bassi <ebassi@linux.intel.com>
* clutter/cogl/cogl-color.h:
	* clutter/cogl/cogl-path.h:
	* clutter/cogl/cogl-types.h:
	* clutter/cogl/common/cogl-color.c: Deprecated cogl_color()
	in favour of cogl_set_source_color() and friends; store the
	CoglColor components as unsigned bytes instead of fixed point
	normalized values; add functions for allocating, copying and
	freeing CoglColor, for use of language bindings.

	* clutter/cogl/cogl.h.in:
	* clutter/cogl/cogl-deprecated.h: Added cogl-deprecated.h,
	an header file containing the deprecation symbols similar
	to clutter-deprecated.h.

	* clutter/cogl/gl/Makefile.am:
	* clutter/cogl/gl/cogl-texture.c:
	* clutter/cogl/gl/cogl.c:
	* clutter/cogl/gles/Makefile.am:
	* clutter/cogl/gles/cogl-texture.c:
	* clutter/cogl/gles/cogl.c: Update the GL and GLES implementations
	of COGL after the CoglColor changes.

	* clutter/clutter-actor.c:
	* clutter/clutter-clone-texture.c:
	* clutter/clutter-entry.c:
	* clutter/clutter-label.c:
	* clutter/clutter-rectangle.c:
	* clutter/clutter-texture.c: Do not use CoglColor whenever it
	is possible, and use cogl_set_source_color4ub() instead.

	* clutter/pango/cogl-pango-render.c: Ditto as above.

	* doc/reference/clutter/subclassing-ClutterActor.xml:
	* doc/reference/cogl/cogl-sections.txt: Update the documentation.

	* tests/interactive/test-cogl-offscreen.c:
	* tests/interactive/test-cogl-primitives.c:
	* tests/interactive/test-cogl-tex-convert.c:
	* tests/interactive/test-cogl-tex-foreign.c:
	* tests/interactive/test-cogl-tex-getset.c:
	* tests/interactive/test-cogl-tex-polygon.c:
	* tests/interactive/test-cogl-tex-tile.c:
	* tests/interactive/test-paint-wrapper.c: Drop the usage of
	CoglColor whenever it is possible.
2008-11-12 13:57:58 +00:00
Neil Roberts
0ff710d37b Bug 1057 - cogl_texture_rectangle doesn't support backward
coordinates

	* clutter/cogl/gl/cogl-texture.c: Instead of sorting the vertex
	and texture coordinates passed to cogl_texture_rectangle, just
	swap both sets whenever the texture coordinates are backward.
2008-11-12 13:03:09 +00:00
Neil Roberts
f59da4d7a4 * clutter/cogl/gles/Makefile.am (libclutterinclude_HEADERS):
* clutter/cogl/gl/Makefile.am (libclutterinclude_HEADERS):
	* clutter/cogl/common/Makefile.am
	(libclutter_cogl_common_la_SOURCES): Move cogl-mesh.h into the
	headers for libclutter so that it will get installed.
2008-11-12 12:08:44 +00:00
Neil Roberts
1fd2156a99 Fix warnings in mesh tests
* tests/conform/test-mesh-mutability.c (on_paint):
	* tests/conform/test-mesh-interleved.c (on_paint):
	* tests/conform/test-mesh-contiguous.c (on_paint): Use g_usleep
	instead of sleep

	* tests/conform/test-mesh-mutability.c (queue_redraw):
	* tests/conform/test-mesh-interleved.c (queue_redraw):
	* tests/conform/test-mesh-contiguous.c (queue_redraw): Added
	missing return statement

	* clutter/cogl/cogl-mesh.h: Add a declaration for
	cogl_mesh_submit

	* clutter/cogl/common/cogl-mesh.c (cogl_mesh_submit): Move the
	documentation to cogl-mesh.h to match the rest of the functions
2008-11-12 10:55:06 +00:00
Robert Bragg
16897e0729 Bug 1164 - Implements the proposed Mesh API
* clutter/cogl/cogl-mesh.h
	* clutter/cogl/cogl-types.h
	* clutter/cogl/cogl.h.in
	* clutter/cogl/common/Makefile.am
	* clutter/cogl/common/cogl-mesh-private.h
	* clutter/cogl/common/cogl-mesh.c
	* clutter/cogl/gl/cogl-context.c
	* clutter/cogl/gl/cogl-context.h
	* clutter/cogl/gl/cogl-defines.h.in
	* clutter/cogl/gl/cogl.c
	* clutter/cogl/gles/cogl-context.c
	* clutter/cogl/gles/cogl-context.h
	* doc/reference/cogl/cogl-docs.sgml
	* doc/reference/cogl/cogl-sections.txt:
	The Mesh API provides a means for submitting an extensible number of
	per vertex attributes to OpenGL in a way that doesn't require format
	conversions and so that the data can be mapped into the GPU (in vertex
	buffer objects) for - hopefully - fast re-use.

	There are a number of things we can potentially use this API for, but
	right now this just provides a foundation to build on. Please read
	the extensive list of TODO items in cogl-mesh.c for examples.

	Please refer to the cogl-mesh section in the reference manual for
	documentation of the API.

	* tests/conform/Makefile.am
	* tests/conform/test-conform-main.c
	* tests/conform/test-mesh-contiguous.c
	* tests/conform/test-mesh-interleved.c
	* tests/conform/test-mesh-mutability.c:
	Privides basic coverage testing for the mesh API.
2008-11-10 18:53:14 +00:00
Neil Roberts
f7d447cfde * clutter/cogl/gles/cogl.c (cogl_perspective):
* clutter/cogl/common/cogl-fixed.c (cogl_fixed_sin)
	(cogl_angle_sin, cogl_angle_tan, cogl_fixed_sqrt): Replaced uses
	of 1 + ~x with just -x which is equivalent and easier to
	understand.
2008-11-06 11:42:11 +00:00
Neil Roberts
a15ae21bd2 * clutter/cogl/gl/cogl.c (cogl_perspective): Use the accurate
64-bit multiplication macro instead of COGL_FIXED_FAST_DIV for
	calculating xmax as was done previously. This fixes
	test-perspective and other tests that had a gone a bit skewiff.
2008-11-04 12:43:06 +00:00
Emmanuele Bassi
e3788338e4 2008-11-03 Emmanuele Bassi <ebassi@linux.intel.com>
* clutter/cogl/gl/Makefile.am: Whitespace fixes.

	* clutter/cogl/gles/Makefile.am: Put back a missing backslash
	that broke the GLES build.
2008-11-03 23:58:13 +00:00
Emmanuele Bassi
7393c6a463 2008-11-03 Emmanuele Bassi <ebassi@linux.intel.com>
Bug 1231 - Build fails in gles flavour in revision 3442

	* clutter/cogl/gles/cogl-context.h: Fix remaining use of
	ClutterFixed over CoglFixed. (Michael Boccara)
2008-11-03 23:54:38 +00:00
Emmanuele Bassi
d30c52ffd4 2008-10-30 Emmanuele Bassi <ebassi@linux.intel.com>
* clutter/cogl/cogl-color.h:
	* clutter/cogl/cogl-fixed.h:
	* clutter/cogl/cogl-offscreen.h:
	* clutter/cogl/cogl-path.h:
	* clutter/cogl/cogl-shader.h:
	* clutter/cogl/cogl-texture.h:
	* clutter/cogl/cogl-types.h: Add copyright and licensing
	notice to the newly added files.
2008-10-30 17:57:41 +00:00
Emmanuele Bassi
90f4b1d492 2008-10-30 Emmanuele Bassi <ebassi@linux.intel.com>
Bug 1219 - Clean up cogl.h

	* clutter/cogl/cogl.h.in:
	* clutter/cogl/cogl-offscreen.h:
	* clutter/cogl/cogl-path.h:
	* clutter/cogl/cogl-shader.h:
	* clutter/cogl/cogl-texture.h:
	* clutter/cogl/cogl-types.h: Split up the massive cogl.h file
	into sub-header for each section of the API.

	* clutter/cogl/gl/*:
	* clutter/cogl/gles/*: Update the GL and GLES implementations
	of COGL to cope with the new header structure.

	* doc/reference/cogl/Makefile.am: Fix symbol retrieval.
2008-10-30 17:25:00 +00:00
Emmanuele Bassi
a32eca26b6 2008-10-30 Emmanuele Bassi <ebassi@linux.intel.com>
Bug 1212 - Allow only a single include file for Clutter

	* clutter/*.h: Only allow including clutter.h in third
	party code.

	* clutter/cogl/cogl-color.h:
	* clutter/cogl/cogl-fixed.h:
	* clutter/cogl/cogl.h.in: Only allow including cogl.h in
	third party code.

	* clutter/cogl/common/Makefile.am:
	* clutter/cogl/gl/Makefile.am:
	* clutter/cogl/gles/Makefile.am:
	* clutter/eglnative/Makefile.am:
	* clutter/eglx/Makefile.am:
	* clutter/fruity/Makefile.am:
	* clutter/glx/Makefile.am:
	* clutter/glx/clutter-glx.h:
	* clutter/osx/Makefile.am:
	* clutter/pango/Makefile.am:
	* clutter/sdl/Makefile.am:
	* clutter/win32/Makefile.am:
	* clutter/x11/Makefile.am: Fix build environment.

	* clutter/x11/clutter-x11-texture-pixmap.h:
	* clutter/x11/clutter-x11.h: Fix inclusion rules.

	* tests/test-pixmap.c: Fix inclusion of GdkPixbuf header.

	* README: Update release notes.
2008-10-30 17:04:34 +00:00
Emmanuele Bassi
36e30239af 2008-10-30 Emmanuele Bassi <ebassi@linux.intel.com>
Bug 1211 - Drop ClutterFeatureFlags usage from COGL

	* clutter/cogl/cogl.h.in:
	* clutter/cogl/gl/cogl.c:
	* clutter/cogl/gles/cogl.c: Do not use ClutterFeatureFlags
	when CoglFeatureFlags will do. This removes the last usage
	of Clutter API inside COGL.
2008-10-30 16:52:56 +00:00
Emmanuele Bassi
a547cdbc4d 2008-10-30 Emmanuele Bassi <ebassi@linux.intel.com>
Bug 1210 - Add CoglColor API

	* clutter/cogl/cogl-color.h:
	* clutter/cogl/cogl.h.in:
	* clutter/cogl/common/Makefile.am:
	* clutter/cogl/common/cogl-color.c:
	* clutter/cogl/gl/Makefile.am:
	* clutter/cogl/gl/cogl.c:
	* clutter/cogl/gles/Makefile.am:
	* clutter/cogl/gles/cogl-texture.c:
	* clutter/cogl/gles/cogl.c: Add a new color-type, to be used by
	COGL. CoglColor is optimized to allow the minimum amount of
	conversions possible for both GL and GLES implementations.

	* clutter/clutter-actor.c:
	* clutter/clutter-clone-texture.c:
	* clutter/clutter-entry.c:
	* clutter/clutter-main.c:
	* clutter/clutter-rectangle.c:
	* clutter/clutter-stage.c:
	* clutter/clutter-texture.c: Use CoglColor when needed.

	* clutter/pango/pangoclutter-render.c: Use CoglColor when needed.

	* doc/reference/cogl/cogl-docs.sgml:
	* doc/reference/cogl/cogl-sections.txt: Update the documentation.

	* tests/test-cogl-offscreen.c:
	* tests/test-cogl-primitives.c:
	* tests/test-cogl-tex-convert.c:
	* tests/test-cogl-tex-foreign.c:
	* tests/test-cogl-tex-getset.c:
	* tests/test-cogl-tex-polygon.c:
	* tests/test-cogl-tex-tile.c:
	* tests/test-paint-wrapper.c: Update the tests.

	* README: Update release notes.
2008-10-30 16:50:07 +00:00
Emmanuele Bassi
911b395c8a 2008-10-30 Emmanuele Bassi <ebassi@linux.intel.com>
Bug 1209 - Move fixed point API in COGL

	* clutter/cogl/cogl-fixed.h:
	* clutter/cogl/cogl.h.in:
	* clutter/cogl/common/Makefile.am:
	* clutter/cogl/common/cogl-fixed.c: Add fixed point API, modelled
	after the ClutterFixed. The CoglFixed API supercedes the ClutterFixed
	one and avoids the dependency of COGL on Clutter's own API.

	* clutter/cogl/common/cogl-clip-stack.c:
	* clutter/cogl/common/cogl-primitives.c:
	* clutter/cogl/common/cogl-primitives.h: Update internal usage of
	ClutterFixed to CoglFixed.

	* clutter/cogl/gl/Makefile.am:
	* clutter/cogl/gl/cogl-primitives.c:
	* clutter/cogl/gl/cogl-texture.c:
	* clutter/cogl/gl/cogl.c: Ditto, in the GL implementation of the
	COGL API.

	* clutter/cogl/gles/Makefile.am:
	* clutter/cogl/gles/cogl-fbo.c:
	* clutter/cogl/gles/cogl-gles2-wrapper.c:
	* clutter/cogl/gles/cogl-primitives.c:
	* clutter/cogl/gles/cogl-texture.c:
	* clutter/cogl/gles/cogl.c: Ditto, in the GLES implementation of
	the COGL API.

	* clutter/pango/pangoclutter-glyph-cache.c:
	* clutter/pango/pangoclutter-glyph-cache.h: Ditto, in the Pango
	renderer glyphs cache.

	* clutter/clutter-fixed.c:
	* clutter/clutter-fixed.h: ClutterFixed and related API becomes
	a simple transition API for bindings and public Clutter API.

	* clutter/clutter-actor.c:
	* clutter/clutter-alpha.c:
	* clutter/clutter-backend.c:
	* clutter/clutter-behaviour-depth.c:
	* clutter/clutter-behaviour-ellipse.c:
	* clutter/clutter-behaviour-path.c:
	* clutter/clutter-behaviour-rotate.c:
	* clutter/clutter-behaviour-scale.c:
	* clutter/clutter-clone-texture.c:
	* clutter/clutter-color.c:
	* clutter/clutter-entry.c:
	* clutter/clutter-stage.c:
	* clutter/clutter-texture.c:
	* clutter/clutter-timeline.c:
	* clutter/clutter-units.h: Move from the internal usage of
	ClutterFixed to CoglFixed.

	* doc/reference/clutter/clutter-sections.txt:
	* doc/reference/cogl/cogl-docs.sgml:
	* doc/reference/cogl/cogl-sections.txt: Update the documentation.

	* tests/test-cogl-tex-tile.c:
	* tests/test-project.c: Fix tests after the API change

	* README: Add release notes.
2008-10-30 16:37:55 +00:00
Neil Roberts
04ce490c0a Bug 1074 - FBOs on GLES
* clutter/cogl/gles/cogl-fbo.c: Copy the code from gl/cogl-fbo but
	use the API calls directly instead of loading an extension because
	it is part of the core in GLES 2.

	* clutter/cogl/gles/cogl.c (_cogl_features_init): Report
	COGL_FEATURE_OFFSCREEN.

	* clutter/cogl/gles/cogl-fbo.h (CoglFbo): Add gl_stencil_handle.

	* clutter/cogl/gles/cogl-context.h (CoglContext): Add
	viewport_store

	* tests/test-fbo.c (make_shader): Conditionally use the GLES 2
	names of the shader variables
2008-10-29 14:52:48 +00:00
Neil Roberts
82d43ffe64 Bug 1189 - Backface culling
* clutter/cogl/gl/cogl-texture.c (cogl_texture_polygon)
	(_cogl_texture_quad_sw, _cogl_texture_quad_hw):
	* clutter/cogl/gles/cogl-texture.c (cogl_texture_polygon)
	(_cogl_texture_quad_sw, _cogl_texture_quad_hw): Enable backface
	culling in GL if it is requested.

	* clutter/cogl/gles/cogl-texture.c (_cogl_texture_quad_sw)
	(_cogl_texture_quad_hw):
	* clutter/cogl/gl/cogl-texture.c (_cogl_texture_quad_sw)
	(_cogl_texture_quad_hw): Reorder the
	vertices so that they are counter-clockwise.

	* clutter/cogl/gles/cogl-context.h (CoglContext): 
	* clutter/cogl/gl/cogl-context.h (CoglContext): Added a flag to
	store whether backface culling is currently enabled.

	* clutter/cogl/gles/cogl.c (cogl_enable_backface_culling): 
	* clutter/cogl/gl/cogl.c (cogl_enable_backface_culling): New
	function

	* doc/reference/cogl/cogl-sections.txt: Add
	cogl_enable_backface_culling
2008-10-27 14:36:52 +00:00
Neil Roberts
e43b7ddd3d Bug 1196 - Texture border drawing problems
* clutter/cogl/gl/cogl-texture.c (_cogl_texture_upload_subregion_to_gl)
	(_cogl_texture_upload_to_gl):

	* clutter/cogl/gles/cogl-texture.c (_cogl_texture_upload_to_gl)
	(_cogl_texture_upload_subregion_to_gl):
	
	When uploading data to a sliced texture, fill the waste pixels
	with copies of the edge of the real texture data. Otherwise the
	value of the waste pixels are undefined so it will show artifacts
	when the texture is scaled with GL_LINEAR and the pixels are
	blended in.
2008-10-27 12:39:22 +00:00
Neil Roberts
96c1a8543d Bug 1043 - COGL calls glTexSubImage2D() with out-of-bounds
values (SIGSEGV)

	* clutter/cogl/gl/cogl-texture.c
	(_cogl_texture_upload_subregion_to_gl): When iterating over the
	slices, discard ones that don't intersect immediatly otherwise it
	will call glTexSubImage2D with a negative width/height and then
	move the source position incorrectly. Thanks to Gwenole
	Beauchesne.
2008-10-20 15:54:17 +00:00
Neil Roberts
50a248764c Bug 1048 - SIGFPE in cogl_texture_set_region() with nvidia
* clutter/cogl/gl/cogl-texture.c (cogl_texture_set_region):
	* clutter/cogl/gles/cogl-texture.c (cogl_texture_set_region):
	Don't attempt to upload any data if the width or height of the
	subregion is zero. Thanks to Gwenole Beauchesne.
2008-09-18 13:16:15 +00:00
Neil Roberts
76faa8c7a6 Bug 1044 - cogl_get_viewport error
* clutter/cogl/gles/cogl.c (cogl_get_viewport): Use glGetIntegerv
	instead of glGetFixedv to read the viewport because the latter
	converts incorrectly on some hardware.
2008-09-18 11:24:27 +00:00
Emmanuele Bassi
0515ee22c2 2008-08-27 Emmanuele Bassi <ebassi@openedhand.com>
Bug 1082 - Texture bitmap is destroyed in wrong way

	* clutter/cogl/common/cogl-bitmap-pixbuf.c:
	(_cogl_bitmap_from_file): Make a copy of the pixbuf data in
	the internal image loader so that we can keep working under
	the assumption that we are using the GLib memory allocation
	and deallocation functions.
2008-08-27 12:56:54 +00:00
Neil Roberts
db4c5e2829 Bug 945 - Clipping+fbo cloning bugs
* clutter/cogl/gl/cogl.c: 
	* clutter/cogl/gles/cogl.c: 
	* clutter/cogl/cogl.h.in: Add cogl_clip_stack_save,
	cogl_clip_stack_restore, cogl_viewport and cogl_frustum.

	* clutter/cogl/gl/cogl-fbo.h: 
	* clutter/cogl/gl/cogl-fbo.c: Try to attach a stencil buffer when
	creating an FBO.

	* clutter/cogl/common/cogl-clip-stack.c: Add functions to save and
	restore the whole state of the stack.

	* clutter/clutter-texture.c (clutter_texture_paint): When
	rendering the FBO source, setup a temporary asymmetric perspective
	projection matrix to render it as it would appear on screen.

	* clutter/clutter-private.h: 
	* clutter/clutter-actor.c
	(_clutter_actor_apply_modelview_transform_recursive): No longer
	static and exported in clutter-private.h
2008-08-01 12:23:57 +00:00
Neil Roberts
9fbdee463d * clutter/cogl/common/cogl-primitives.c (cogl_path_rel_curve_to):
Fixed a typo in the second parameter which meant the curve was
	drawn incorrectly.
2008-07-14 19:22:17 +00:00
Matthew Allum
34329a1ffb 008-07-10 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/gles/cogl-fbo.c:
        * clutter/cogl/gles/cogl-texture.c:
        Fix warnings with eglnative build
2008-07-10 16:19:09 +00:00
Øyvind Kolås
60341ad959 * clutter/cogl/common/cogl-bitmap-pixbuf.c:
(_cogl_bitmap_from_file): removed debug g_printf that announces each
successful image load done by the internal image backend.
2008-07-03 09:49:06 +00:00
Neil Roberts
604990a53b Bug 985 - MSC math.h / M_PI issue
* clutter/cogl/gl/cogl.c (set_clip_plane): 
	* clutter/clutter-alpha.c (sinc_func): Use G_PI instead of M_PI
	because M_PI isn't defined in MSVC without a special
	#define. Thanks to Haakon Sporsheim
2008-06-30 16:15:53 +00:00
Emmanuele Bassi
edca282ad0 2008-06-30 Emmanuele Bassi <ebassi@openedhand.com>
Bug 980 - cogl-bitmap-fallback.c compiler error/warning due to
	          cast issue (Haakon Sporsheim)

	* clutter/cogl/common/cogl-bitmap-fallback.c:
	(_cogl_unpremult_alpha_last),
	(_cogl_unpremult_alpha_first): Cast to avoid a compiler warning
	with MSC.
2008-06-30 14:20:46 +00:00
Matthew Allum
03d7fdacd6 2008-06-27 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/gl/cogl.c:
        Temp workaround for 10.4 ATI card OSX folks, see #929
        (Tommi Komulainen)

        Bug 998 - clutter always captures X input events

* clutter/eglx/clutter-stage-egl.c:
        * clutter/glx/clutter-stage-glx.c:
When we disable X event retrival, dont still select for window
events.
2008-06-27 23:02:30 +00:00
Neil Roberts
d4da3a3e2a * clutter/cogl/gles/cogl-gles2-wrapper.h:
* clutter/cogl/gles/cogl-gles2-wrapper.c: All of the settings and
	uniforms are now proxied into COGL variables instead of setting
	the GL uniforms directly. Just before glDrawArrays is executed a
	shader is generated using the given settings to avoid using 'if'
	statements. The shaders are cached.

	* clutter/cogl/gles/cogl-fixed-vertex-shader.glsl: 
	* clutter/cogl/gles/cogl-fixed-fragment-shader.glsl: The shaders
	are now split into parts using comments instead of 'if' statements
	so that the simplest shader can be generated on the fly.

	* clutter/cogl/gles/stringify.sh: Now splits up the shader sources
	into separate C strings where deliminated by special comments.

	* clutter/cogl/gles/cogl-program.h: 
	* clutter/cogl/gles/cogl-program.c: A custom shader can no longer
	be directly linked with the fixed-functionality replacement
	because the replacement changes depending on the settings. Instead
	the bound shader is linked with the appropriate replacement shader
	just before glDrawArrays is executed. The custom uniform variables
	must also be proxied through COGL variables because their location
	can change when relinked.
2008-06-24 16:21:40 +00:00
Emmanuele Bassi
300d1ef025 Fixes for distcheck 2008-06-23 16:43:49 +00:00
Neil Roberts
dff84094ff Bug 918 - Group doesn't clip if it's children are clipped
* clutter/cogl/common/cogl-clip-stack.h: 
	* clutter/cogl/common/cogl-clip-stack.c: Added functions to
	maintain a stack of clipping rectangles.

	* clutter/cogl/gles/cogl.c: 
	* clutter/cogl/gl/cogl.c: The cogl_clip_set and unset functions
	have moved into cogl-clip-stack.c which calls back to cogl.c to
	set the actual rectangles. Multiple clip rectangles are combined
	by merging the stencil buffers.

	* clutter/cogl/gles/cogl-primitives.c (_cogl_path_fill_nodes): 
	* clutter/cogl/gl/cogl-primitives.c (_cogl_path_fill_nodes): Merge
	the stencil buffer with the contents of the clipping stack after
	drawing the path.

	* clutter/cogl/gles/cogl-context.h (CoglContext): 
	* clutter/cogl/gl/cogl-context.h (CoglContext): Store the number
	of available stencil bits.

	* clutter/cogl/common/Makefile.am
	(libclutter_cogl_common_la_SOURCES): Added cogl-clip-stack.c
2008-06-23 14:57:36 +00:00
Emmanuele Bassi
d9b657bdfc 2008-06-23 Emmanuele Bassi <ebassi@openedhand.com>
Bug 982 - __COGL_GET_CONTEXT MS compiler issue (Haakon Sporsheim)

	* clutter/cogl/common/cogl-handle.h:
	* clutter/cogl/common/cogl-primitives.c: Remove C99-isms.

	* clutter/cogl/gl/cogl-fbo.c:
	* clutter/cogl/gl/cogl-primitives.c:
	* clutter/cogl/gl/cogl-texture.c:
	* clutter/cogl/gl/cogl.c: Ditto as above.

	* clutter/cogl/gles/cogl-fbo.c:
	* clutter/cogl/gles/cogl-primitives.c:
	* clutter/cogl/gles/cogl-texture.c: Ditto as above.
2008-06-23 11:01:30 +00:00
Matthew Allum
6fe23fefe9 Revert miscommit of unfinished cogl changes in r2920 2008-06-14 22:07:23 +00:00
Matthew Allum
04bf04db4d 2008-06-14 Matthew Allum <mallum@openedhand.com>
* README:
        Make needed GL version 1.4, note GLES2 support, add some notes
        for COGL.
2008-06-13 23:03:45 +00:00
Emmanuele Bassi
a4c4e3464d 2008-06-12 Emmanuele Bassi <ebassi@openedhand.com>
* doc/reference/cogl/Makefile.am: Ignore cogl/gl and cogl/gles
	when building the documentation.

	* clutter/cogl/cogl.h.in: Add sections in the header file.
2008-06-12 17:21:16 +00:00
Chris Lord
db518c8736 * clutter/cogl/common/cogl-primitives.c: (_cogl_path_arc):
Draw as expected when end angle is lower than start angle (i.e. do not
        swap the angles). This aligns with cairo behaviour.
2008-06-10 10:05:12 +00:00
Tommi Komulainen
78e1f63fcd cogl: add support for quartz imagebackend
Bug #930 - add support for quartz imagebackend

	* clutter/cogl/common/cogl-bitmap-pixbuf.c
	(_cogl_bitmap_from_file): When USE_QUARTZ is defined implement
	using Core Graphics.
	* configure.ac: support --with-imagebackend=quartz and print
	which imagebackend is selected. Make quartz default on OSX
2008-06-09 21:15:12 +00:00
Øyvind Kolås
a28e51d752 * clutter/cogl/common/cogl-primitives.c: (cogl_path_rel_curve_to):
fixed naming of implementation of cogl_path_rel_curve_to (it was
called just cogl_rel_curve_to).
2008-06-09 16:14:06 +00:00
Neil Roberts
1bfeddaaee * clutter/eglnative/clutter-stage-egl.c
(clutter_stage_egl_realize): Use ES 2 renderable type when
	building for GLES 2.

	* clutter/eglnative/clutter-event-egl.c (get_backend_time): Added
	a NULL for the microseconds parameter of g_timer_elapsed.

	* clutter/eglnative/clutter-stage-egl.h: 
	* clutter/eglnative/clutter-egl.h: 
	* clutter/eglnative/clutter-backend-egl.h: Include
	clutter-egl-headers.h instead of including the GL headers directly
	so it can include gl2.h when building for GLES 2.

	* clutter/eglnative/clutter-egl-headers.h: 
	* clutter/eglnative/Makefile.am (libclutter_eglnative_la_SOURCES):
	Added clutter-egl-headers.h

	* clutter/cogl/gles/cogl-fixed-fragment-shader.glsl: GLES 2
	doesn't provide a default precision for floats in the fragment
	shader and it will reject the shader if there isn't one.
2008-06-06 14:21:22 +00:00
Matthew Allum
9d8bfaf997 2008-06-06 Matthew Allum <mallum@openedhand.com>
Bug #948 - Remove texture rectangle support

        * clutter/clutter-feature.c:
        * clutter/clutter-feature.h:
        * clutter/clutter-texture.c:
        * clutter/cogl/gl/cogl.c:
* clutter/glx/clutter-glx-texture-pixmap.c:
        Remove support for GL_TEXTURE_RECTANGLE_ARB (now using just regular
        2D textures, with optional npots extension). Simplifys code, + makes
        mipmap & shader support much more sane.
2008-06-06 13:44:22 +00:00
Øyvind Kolås
7804ce7d1a * clutter/cogl/common/cogl-bitmap-pixbuf.c:
(_cogl_bitmap_from_file): allocate height×rowstride and not duplicate
gdkpixbuf's strange optimization saving some bytes at the end of the
pixbuf.
2008-06-06 12:53:35 +00:00
Tommi Komulainen
3d034ff6aa cogl: define GL_READ/DRAW_FRAMEBUFFER_EXT if not available
Bug 913 - cogl fails to build on OSX

	* clutter/cogl/gl/cogl-fbo.c: define GL_READ_FRAMEBUFFER_EXT and
	GL_DRAW_FRAMEBUFFER_EXT if not defined in the build system. The
	#ifdef can fail if they're not #defines but variables or enums.
	As the values are supposed to be industry standard even then
	it shouldn't have ill effects.
2008-06-05 21:40:59 +00:00
Neil Roberts
8bdb98736d Applied 'final patch' from bug #874
* clutter/cogl/gles/cogl.c:
	* clutter/cogl/gl/cogl.c: The clip planes are now set using the
	inverse projection matrix as the modelview matrix so that they can
	be specified in screen coordinates.

	* clutter/cogl/gles/cogl-context.h (CoglContext):
	* clutter/cogl/gl/cogl-context.h (CoglContext): Added a member to
	cache the inverse projection matrix

	* clutter/clutter-fixed.h: Added a constant for converting from
	radians to degrees.

	* clutter/clutter-fixed.c (clutter_atani, clutter_atan2i): Added
	fixed-point versions of atan and atan2.

	* tests/test-clip.c: Added a test for clipping with various
	rotations and depths.

	* tests/Makefile.am (noinst_PROGRAMS): Added test-clip
2008-06-02 12:34:10 +00:00
Neil Roberts
42ed195f01 * clutter/cogl/gles/cogl-gles2-wrapper.h: The uniform numbers are
now stored in a separate struct so they can be stored for
	application program objects as well.

	* clutter/cogl/gles/cogl.c: Moved stub shader functions into
	separate files.
	(_cogl_features_init): Report support for the shaders feature on
	GLES 2

	* clutter/cogl/gles/cogl-shader.h:
	* clutter/cogl/gles/cogl-shader.c:
	* clutter/cogl/gles/cogl-program.h:
	* clutter/cogl/gles/cogl-program.c: Separate files to handle
	shaders on programs on GLES. If version 1.1 is being used then the
	stub functions which all fail are still used.

	* clutter/cogl/gles/cogl-gles2-wrapper.c
	(cogl_gles2_wrapper_init, cogl_gles2_wrapper_bind_attributes),
	(cogl_gles2_wrapper_get_uniforms): Move the uniforms and attribute
	bindings into a separate function so they can be used to bind on
	application shaders as well.
	(cogl_gles2_wrapper_update_matrix): Now takes a parameter and is
	no longer static so that it can be used to update all of the
	matrices when a new shader is bound.

	* clutter/cogl/gles/cogl-defines.h.in: Use GL_COMPILE_STATUS for
	CGL_OBJECT_COMPILE_STATUS if the latter isn't available (for
	example on GLES 2).

	* clutter/cogl/gles/cogl-context.h (CoglContext): Added handle
	arrays for programs and shaders.

	* clutter/cogl/gles/cogl-context.c (cogl_create_context)
	(cogl_destroy_context): Initialize and destroy program and shader
	handle array.

	* clutter/cogl/gles/Makefile.am (libclutter_cogl_la_SOURCES): Add
	cogl-{shader,program}.{c,h}
2008-06-02 10:58:57 +00:00
Neil Roberts
de49189c9f * clutter/cogl/gl/cogl-context.c (cogl_destroy_context): Fix
cut-and-paste error where the wrong arrays were being freed.
2008-06-02 09:35:43 +00:00
Neil Roberts
71133b3d0e * clutter/cogl/gles/cogl-gles2-wrapper.h (CoglGles2Wrapper): Added
uniforms for alpha testing.

	* clutter/cogl/gles/cogl-gles2-wrapper.c
	(cogl_gles2_wrapper_init): Get the uniforms for alpha testing
	settings.
	(cogl_wrap_glEnable, cogl_wrap_glDisable): Enable/disable alpha
	testing.
	(cogl_wrap_glAlphaFunc): Filled in the wrapper.

	* clutter/cogl/gles/cogl-fixed-fragment-shader.glsl: Added alpha
	testing.

	* clutter/cogl/gles/cogl-gles2-wrapper.h:
	* clutter/cogl/gles/cogl-gles2-wrapper.c
	(cogl_wrap_glGetIntegerv): Added a wrapper for glGetIntegerv so
	that it can report zero clip planes.

	* clutter/cogl/gles/cogl.c:
	* clutter/cogl/gles/cogl-texture.c: Use the wrapped version of
	glGetIntegerv

	* clutter/cogl/gles/cogl-primitives.c (_cogl_path_fill_nodes): Use
	_cogl_features_available to check for the stencil buffer instead
	of an #ifdef. The stencil buffer is available in the default
	profile for the GLES 2 simulator.
2008-05-29 13:29:04 +00:00
Neil Roberts
8d7bf93909 * clutter/cogl/gles/cogl-gles2-wrapper.c
(cogl_gles2_wrapper_init): Get uniforms for fog parameters and
    	initialise them.
    	(cogl_wrap_glDrawArrays): Store the modelview matrix in a uniform
    	as well so that it can be used for fogging calculations.
    	(cogl_wrap_glEnable, cogl_wrap_glDisable): Enable/disable fogging.
    	(cogl_wrap_glFogx, cogl_wrap_glFogxv): Fill in wrapper to set
    	fogging parameters.

    	* clutter/cogl/gles/cogl-fixed-vertex-shader.glsl: Calculate the
    	fog amount if fogging is enabled.

    	* clutter/cogl/gles/cogl-fixed-fragment-shader.glsl: Mix with fog
    	color.

    	* clutter/cogl/gles/cogl-gles2-wrapper.h (CoglGles2Wrapper): Add
    	uniforms for fogging.
2008-05-28 17:14:17 +00:00
Neil Roberts
717d9768ed * clutter/cogl/gles/Makefile.am: Use old-style Makefile rules for
the stringify script so that automake won't complain.
2008-05-28 13:17:03 +00:00
Neil Roberts
1502d0690c * clutter/cogl/gles/cogl-gles2-wrapper.c (cogl_wrap_glGetFixedv):
Filled in the wrapper for glGetFixedv
2008-05-28 11:29:58 +00:00
Neil Roberts
29f7cbdfb7 * clutter/cogl/gles/cogl-texture.c: Use the wrapper for
glTexParameteri. Call glGenerateMipmap after every change to the
	texture image data.

	* clutter/cogl/gles/cogl-gles2-wrapper.h:
	* clutter/cogl/gles/cogl-gles2-wrapper.c: Added a wrapper for
	glTexParameteri so that it can ignore requests to set
	GL_GENERATE_MIPMAP. Added a wrapper for glGenerateMipmap that does
	nothing on GLES 1
2008-05-28 10:47:21 +00:00
Neil Roberts
70dbc03734 GLES 2 backend
* clutter/eglx/clutter-stage-egl.h:
	* clutter/eglx/clutter-egl-headers.h:
	* clutter/eglx/clutter-backend-egl.h:
	* clutter/eglx/Makefile.am: Include the GLES and EGL headers via
	clutter-egl-headers.h so that the right version can be used
	depending on whether the GLES 2 wrapper is being used.

	* configure.ac: Added an automake conditional for whether the GLES
	2 wrapper should be used.

	* clutter/eglx/clutter-stage-egl.c (clutter_stage_egl_realize):
	Remove the call to glGetIntegerv to get the max texture size. It
	was being called before the GL context was bound so it didn't work
	anyway and it was causing trouble for the GLES 2 simulator.

	* clutter/cogl/gles/stringify.sh: Shell script to convert the
	shaders into a C string.

	* clutter/cogl/gles/cogl-gles2-wrapper.h:
	* clutter/cogl/gles/cogl-gles2-wrapper.c: Wrappers for most of the
	missing GL functions in GLES 2.

	* clutter/cogl/gles/cogl-fixed-fragment-shader.glsl:
	* clutter/cogl/gles/cogl-fixed-vertex-shader.glsl: New shaders for
	GLES 2

	* clutter/cogl/gles/cogl-defines.h.in: Use the @CLUTTER_GL_HEADER@
	macro instead of always using the GLES 1 header.

	* clutter/cogl/gles/cogl-context.h (CoglContext): Include a field
	for the state of the GLES 2 wrapper.

	* clutter/cogl/gles/cogl-texture.c:
	* clutter/cogl/gles/cogl-primitives.c:
	* clutter/cogl/gles/cogl.c: Use wrapped versions of the GL
	functions where neccessary.

	* clutter/cogl/gles/Makefile.am: Add sources for the GLES 2
	wrapper and an extra build step to put the GLSL files into a C
	string whenever the files change.
2008-05-27 17:42:50 +00:00
Emmanuele Bassi
4ef8d3bb5f 2008-05-23 Emmanuele Bassi <ebassi@openedhand.com>
Bug #912 - Invalid use of int* as parameter for glGetIntegerv

	* clutter/cogl/gl/cogl.c (_cogl_features_init): Use GLint
	instead of int. (#912, Tommi Komulainen)
2008-05-23 15:23:40 +00:00
Neil Roberts
f9e43c440b * clutter/cogl/gl/cogl.c (error_string):
* clutter/cogl/gles/cogl.c (error_string): Rename to
	_cogl_error_string and remove the static scoping so that it can be
	called in cogl-texture etc.

	* clutter/cogl/gl/cogl-texture.c (cogl_texture_new_from_foreign):
	* clutter/cogl/gles/cogl-texture.c (cogl_texture_new_from_foreign):
	GE(*) can't be used to wrap around calls that use the return
	value.

	* clutter/cogl/gl/cogl-texture.c (_cogl_texture_quad_sw)
	(_cogl_texture_quad_hw, cogl_texture_polygon): Remove GE(*)
	wrapper around calls in the middle of a glBegin/glEnd pair which
	otherwise always generate an error because glGetError can only be
	called outside of the pair.

	* clutter/cogl/gl/cogl-internal.h: Include stdio.h when definig
	COGL_DEBUG and declare a prototype for _cogl_error_string.

	* clutter/cogl/gles/cogl-internal.h: Match GE(*) macro to GL
	version.
2008-05-21 13:20:33 +00:00
Ivan Leben
9f5a8edc64 * clutter/cogl/gles/cogl-texture.c:
(_cogl_texture_download_from_gl:) Only comment out the broken
	check for framebuffer alpha bits, not the check for alpha in
	texture format.
2008-05-21 10:00:08 +00:00
Ivan Leben
2008a03a6b * clutter/cogl/gles/cogl-texture.c:
(cogl_texture_download_from_gl:) Implemented a workaround
	for missing alpha framebuffer channel. There are still
	some issues with detecting whether alpha is present in the
	framebuffer. See comments in code. Test-cogl-tex-getset now
	successfully retrieves a RGBA texture image data.
2008-05-20 10:37:36 +00:00
Ivan Leben
3d9f83019d * clutter/cogl/gles/cogl-texture.c:
(cogl_texture_download_from_gl:) Store old blending factors
	and restore them when done. The lack of ability to retrieve
	the alpha channel now more noticable in test-cogl-tex-getset
	since the edges of the hand are not antialiased.

	* clutter/cogl/gl(es)/cogl-internal.h: Declare
	cogl_blend_func to avoid "implicit implementation" compile
	warning.
2008-05-19 15:21:56 +00:00
Ivan Leben
f2d701c809 * clutter/cogl/gl(es)/cogl.c: New internal function
cogl_blend_func caches blending setup much like cogl_enable
	does with the enable flags. This separates blending factors
	setup from the enable/disable operation in preparation of
	the texture image retrieval fix for alpha channel on GLES.
	(cogl_enable:) Does not modify blending factors anymore.

	* clutter/cogl/gl(es)/cogl-context.h: CoglContext holds two
	new variables to cache blending src and dst factors.

	* clutter/cogl/gl(es)/cogl-context.c:
	(cogl_create_context:) Initialize blending factors.

	* clutter/cogl/gles/cogl-texture.c:
	(cogl_texture_download_from_gl:) Set blending factors to
	CGL_ONE, CGL_ZERO which fixes the slighlty improper behavior
	where source colour was actually multiplied with its alpha
	value in the result (not noticable on current tests).
2008-05-19 15:02:27 +00:00
Neil Roberts
14a48008cd Use the Mesa headers instead of depending on GLee for Win32
builds.

	* configure.ac: No longer check for GLee

	* clutter/cogl/gl/cogl-defines.h.in: Don't bother including GLee.h

	* build/mingw/mingw-cross-compile.sh: No longer downloads libGLee
	but downloads the Mesa library instead and installs the headers
	from that. Fixed the libpng version.
2008-05-16 11:09:59 +00:00
Øyvind Kolås
677a202407 * clutter/cogl/gles/cogl.c: (_cogl_features_init): do not set
COGL_FEATURE_TEXTURE_READ_PIXELS, since it is not available.
2008-05-14 11:10:45 +00:00
Ivan Leben
54e2fd14ae * clutter/cogl/gl/cogl-defines.h.in:
Fix GL function prototypes on OS X by #definining APIENTRY and
	APIENTRYP if missing.
2008-05-13 04:56:06 +00:00
Ivan Leben
75b829f930 * clutter/cogl/gl/cogl-defines.h.in:
Defined GL extension functions used by Cogl inside the COGL_
	namespace.

	* clutter/cogl/gl/cogl-context.h:
	* clutter/cogl/gl/cogl.c:
	Use COGL_ extension function prototypes instead of relying
	on glext.h to define them. Should fix the mac compilability
	bug, but haven't tested it yet.
2008-05-12 17:20:22 +00:00
Ivan Leben
ef084cfa95 * clutter/cogl/cogl.h.in:
* clutter/cogl/gl(es)/cogl-texture.h:
	* clutter/cogl/gl(es)/cogl-texture.c:
	cogl_texture_new_* functions take a gboolean auto_mipmap argument.
	If TRUE automatic mipmap generation is enabled during the process
	of slice texture object creation.
	(cogl_texture_new_from_foreign:) now allows mipmap min filter
	flags.

	* clutter/clutter-texture.c:
	* clutter/glx/clutter-glx-texture-pixmap.c:
	* tests/test-cogl-offscreen.c:
	* tests/test-cogl-tex-tile.c:
	* tests/test-cogl-tex-convert.c:
	* tests/test-cogl-tex-polygon.c:
	* tests/test-cogl-tex-getset.c:
	Pass FALSE for auto_mipmap to cogl_texture_new_*.

	* clutter/pango/pangoclutter-render.c:
	(tc_get:) Pass TRUE to cogl_texture_new_with_size and use mipmap
	min filter for nicer glyphs at small scales. As a result test-text
	has gone all beautiful now.
2008-05-07 16:12:54 +00:00
Øyvind Kolås
a1d0b30070 * clutter/cogl/gl/cogl-primitives.c:
* clutter/cogl/gles/cogl-primitives.c: 
* clutter/cogl/common/cogl-primitives.c: moved declaration of
gegl_rectangle and gegl_rectanglex here to satisfy linking
requirements when building the fruity backend.
2008-05-05 12:01:19 +00:00
Øyvind Kolås
0e6ad06db4 * clutter/cogl/cogl.h.in: api review touch ups.
* clutter/cogl/common/cogl-primitives.c: api review touch ups.
* clutter/cogl/gl/cogl-primitives.c: (cogl_path_fill),
(cogl_path_stroke): indentation.
* clutter/cogl/gles/cogl-primitives.c:
(_cogl_path_fill_nodes): free allocated resources.
* tests/test-cogl-primitives.c: updated to new API, added rotation to
test to show that cogl renders paths correct under perspective
distortion.
2008-05-05 10:25:11 +00:00
Øyvind Kolås
a628a7cf5c * clutter/cogl/gles/cogl-primitives.c: (_cogl_path_fill_nodes): draw
the rasterized scanlines as an array of triangles.
2008-05-01 11:27:58 +00:00
Øyvind Kolås
98f5b6a0c9 * clutter/cogl/gles/cogl-primitives.c: (_cogl_path_fill_nodes):
keep track of direction we are drawing in and make sure we leave
two intersection points when we have changed direction.
2008-04-30 21:48:47 +00:00
Øyvind Kolås
6562d30ab0 * clutter/cogl/gles/cogl-primitives.c: (_cogl_path_fill_nodes):
scanline rasterizer fallback for GLES without working stencil
buffer (would benefit from optimization/smarter choice of
datastructures).
2008-04-30 16:57:21 +00:00
Øyvind Kolås
11a14de9f1 * clutter/cogl/common/Makefile.am:
* clutter/cogl/common/cogl-primitives.c:
* clutter/cogl/common/cogl-primitives.h:
* clutter/cogl/gl/Makefile.am:
* clutter/cogl/gl/cogl-primitives.c:
* clutter/cogl/gl/cogl-primitives.h:
* clutter/cogl/gles/Makefile.am:
* clutter/cogl/gles/cogl-primitives.c:
* clutter/cogl/gles/cogl-primitives.h: moved duplicated code to the
common directory.
2008-04-30 15:05:17 +00:00
Neil Roberts
19058afe82 Removed COGLhandle and changed shader and program functions to be
wrapped in reference-counted CoglHandles instead.

	* clutter/cogl/gl/cogl-shader.c: 
	* clutter/cogl/gl/cogl-shader.h: 
	* clutter/cogl/gl/cogl-program.c: 
	* clutter/cogl/gl/cogl-program.h: 
	New files to hold the shader and program functions.

	* clutter/cogl/gl/cogl.c: Removed shader and program functions.

	* clutter/cogl/common/cogl-handle.h: New header to define
	COGL_HANDLE_DEFINE which helps build functions to create
	reference-counted handles. This reduces the amount of duplicated
	code.

	* clutter/cogl/gl/cogl-texture.c: 
	* clutter/cogl/gles/cogl-texture.c: 
	* clutter/cogl/gl/cogl-fbo.c: Converted to use COGL_HANDLE_DEFINE
	from cogl-handle.h to avoid duplicating some of the common code.

	* clutter/cogl/gles/cogl-defines.h.in: 
	* clutter/cogl/gl/cogl-defines.h.in: Removed COGLhandle

	* clutter/cogl/gl/cogl-context.h: Added handle arrays for programs
	and shaders.

	* clutter/cogl/gl/cogl-context.c (cogl_create_context): Added
	initialisers for shader_handles and program_handles.
	(cogl_destroy_context): Added calls to g_array_free for all handle
	arrays.

	* clutter/cogl/gl/Makefile.am (libclutter_cogl_la_SOURCES): Added
	cogl-{program,shader}.{c,h}

	* clutter/cogl/common/Makefile.am
	(libclutter_cogl_common_la_SOURCES): Added cogl-handle.h

	* clutter/cogl/gles/cogl.c:
	* clutter/cogl/cogl.h.in: Programs and shaders are now wrapped in
	CoglHandles instead of COGLhandles. cogl_program_destroy and
	cogl_shader_destroy is now replaced with cogl_program_unref and
	cogl_shader_unref. cogl_program_ref and cogl_shader_ref are also
	added.

	* clutter/clutter-shader.c: Converted to use CoglHandles for the
	programs and shaders instead of COGLhandles.

	* cogl/cogl-sections.txt: Added cogl_shader_ref,
	cogl_shader_unref, cogl_is_shader, cogl_program_ref,
	cogl_program_unref, cogl_is_program and cogl_is_offscreen.
2008-04-29 16:10:37 +00:00
Øyvind Kolås
83e2861614 * clutter/cogl/cogl.h.in: renaming of API's in cogl to make the
primitives and path API a bit smaller and more resembling cairo.
* clutter/cogl/gl/cogl-primitives.c:
* clutter/cogl/gles/cogl-primitives.c:
* clutter/cogl/gles/cogl.c:
* clutter/clutter-actor.c:
* clutter/clutter-rectangle.c:
* tests/test-cogl-offscreen.c:
* tests/test-cogl-primitives.c:
* tests/test-cogl-tex-convert.c:
* tests/test-cogl-tex-foreign.c:
* tests/test-cogl-tex-getset.c:
* tests/test-cogl-tex-tile.c: updated according to changes in cogl.
2008-04-29 15:41:34 +00:00
Robert Bragg
3bcd5d3f98 2008-04-29 Robert Bragg <bob@o-hand.com>
* clutter/cogl/gles/cogl-texture.c:
	Replaces an malloc call with g_malloc.
2008-04-29 12:44:41 +00:00
Neil Roberts
122e1dafd1 Fixed 'make dist'
* clutter/cogl/Makefile.am (EXTRA_DIST): Distribute cogl.h.in
	instead of cogl.h
	(DIST_SUBDIRS): Added common folder

	* clutter/cogl/gl/Makefile.am (libclutter_cogl_la_SOURCES): Remove
	cogl-defines.h and use the right location for cogl-defines.gl.h
	(EXTRA_DIST): Distribute cogl-defines.h.in

	* clutter/cogl/gles/Makefile.am (libclutter_cogl_la_SOURCES):
	Remove cogl-defines.h and use the right location for
	cogl-defines.gles.h
	(EXTRA_DIST): Distribute cogl-defines.h.in

	* clutter/Makefile.am (DIST_SUBDIRS): Add fruity
2008-04-28 16:57:44 +00:00
Neil Roberts
18826f3b04 * clutter/cogl/cogl.h.in (COGL_A_BIT): Added the missing comma after
COGL_PIXEL_FORMAT_G_8
2008-04-28 16:03:06 +00:00
Øyvind Kolås
35e0ae7fa9 * clutter/cogl/cogl.h.in: reindented. 2008-04-28 15:36:11 +00:00
Øyvind Kolås
de5f1e78fb * clutter/cogl/cogl.h.in: moved the documentation of the cogl
primitives to the main public header.
* clutter/cogl/gl/cogl-primitives.c: from here ..
* clutter/cogl/gles/cogl-primitives.c: .. _and_ here.
2008-04-28 14:18:29 +00:00
Øyvind Kolås
aae4c7d0f6 * clutter/cogl/cogl.h.in: added documentation. 2008-04-28 14:00:46 +00:00
Neil Roberts
6409b1adeb Merged clutter-ivan branch into trunk.
svn merge \
 https://svn.o-hand.com/repos/clutter/trunk/clutter@2509 \
 https://svn.o-hand.com/repos/clutter/branches/clutter-ivan@HEAD
2008-04-25 13:37:36 +00:00
Matthew Allum
77a7eaeed5 2008-04-14 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/gles/cogl.c: (cogl_color):
        Disable use of color4ub, issues with latest MBX SDL (#857)

        * clutter/eglx/clutter-backend-egl.c:
        * clutter/eglx/clutter-stage-egl.c:
        * configure.ac:
        Fixup for the eglx backend to work with new backend/multistage code.
        Some issues remain in destroying stages.
2008-04-14 15:10:22 +00:00
Emmanuele Bassi
497734062c 2008-04-09 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/Makefile.am: Update the regular expression to match
	all the namespaces we actually use. Thanks to Neil Roberts for
	spotting this. A make distclean is needed.

	* clutter/cogl/gl/Makefile.am:
	* clutter/cogl/gles/Makefile.am:
	* clutter/json/Makefile.am:
	* clutter/pango/Makefile.am: Revert previous commit.
2008-04-09 14:18:42 +00:00
Emmanuele Bassi
05b2e6bc1c 2008-04-09 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/cogl/Makefile.am:
	* clutter/cogl/gl/Makefile.am:
	* clutter/cogl/gles/Makefile.am:
	* clutter/json/Makefile.am:
	* clutter/pango/Makefile.am: Fix the visibility of all the
	symbols, for the main library and the statically linked ones.
2008-04-09 13:27:00 +00:00
Matthew Allum
e44ac14ef7 2008-04-04 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-actor.c:
        Remove uneeded stage private member.
        Add show-on-set-parent prop and make so by default Actors are
        now automatically shown when reparented (#791)

        * clutter/eglx/clutter-backend-egl.c:
        * clutter/cogl/gles/cogl.c:
        A couple of minor comments.

        * clutter/eglnative/Makefile.am:
        Add missing clutter-egl.h header (back port from trunk)

        * tests/test-actors.c:
        Modify to take advantage of new show-on-set-parent functionality.
2008-04-04 13:20:02 +00:00
Neil Roberts
051ed6b43b 2008-03-25 Neil Roberts <neil@o-hand.com>
Added a native Win32 WGL backend.

	* configure.ac: Added the 'win32' flavour.

	* clutter/cogl/gl/cogl.c (cogl_get_proc_address): Added an ifdef
	to use wglGetProcAddress with the Win32 backend.

	* clutter/Makefile.am (DIST_SUBDIRS): Added the win32 directory.

	* clutter/win32/clutter-win32.pc.in:
	* clutter/win32/clutter-win32.h: 
	* clutter/win32/clutter-stage-win32.h: 
	* clutter/win32/clutter-stage-win32.c: 
	* clutter/win32/clutter-event-win32.c: 
	* clutter/win32/clutter-backend-win32.h: 
	* clutter/win32/Makefile.am:
	* clutter/win32/clutter-backend-win32.c: New files.
2008-03-25 15:42:50 +00:00
Matthew Allum
97b9cd92f0 2008-02-15 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/gles/cogl.c: (cogl_paint_init):
        Remove depth test getting turned on by default (unlike GL backend)
2008-02-15 14:30:45 +00:00
Matthew Allum
9026b8f976 2008-02-03 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-shader.c:
        Minor formatting cleanups to fit in 80 cols.

        * clutter/clutter-texture.c:
        More safety checks, clean ups in clutter_texture_new_from_actor()

        * clutter/cogl/gl/cogl.c:
        Always clear the FBO initially when rendering

        * tests/test-fbo.c:
        Overhall the test as to be more useful (and show current issues)
2008-02-03 01:53:10 +00:00
Matthew Allum
d83442476f 2008-02-01 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/cogl.h:
        * clutter/cogl/gl/cogl.c:
        * clutter/cogl/gles/cogl.c:
       Disable the depth test and buffer as has some strange side
       effects, mainly on x/y axis rotation with multiple layers at
       same depth (eg rotating text on a bg has very strange
       effect). Seems no clean 100% effective way to fix without other
       odd issues.. So for now move to application to handle and add
       cogl_enable_depth_test() as for custom actors (i.e groups) to
       enable if need be.
2008-02-01 18:14:54 +00:00
Matthew Allum
8366a906e2 2008-02-01 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-feature.h:
        * clutter/clutter-texture.c:
        * clutter/clutter-texture.h:
        * clutter/cogl/cogl.h:
        * clutter/cogl/gl/cogl.c:
        * clutter/cogl/gles/cogl.c:
        * tests/Makefile.am:
        * tests/test.fbo.c:
        Add initial support for FBO's in Clutter (OpenGL only so far).
        See new clutter_texture_new_from_actor()
        Initial implementation, needs work.

        * clutter/x11/clutter-stage-x11.c:
        (clutter_stage_x11_set_cursor_visible):
        Fall back to again not relying on xfixes to hide cursor. *sigh*

        * clutter/clutter-deprecated.h:
        Add clutter_group_find_child_by_id
2008-02-01 15:29:00 +00:00
Øyvind Kolås
6bb998f25f * clutter/cogl/gles/cogl.c: (cogl_rectangle_internal): increase size
of GLfixed[] array to make contents fit.
2008-02-01 12:07:23 +00:00
Emmanuele Bassi
e2f72ae557 2008-01-16 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/cogl/cogl.h: Rename COGLhandleARB to COGLhandle.

	* clutter/cogl/gl/cogl-defines.h.in:
	* clutter/cogl/gl/cogl.c: Update GL implementation of COGL.

	* clutter/cogl/gles/cogl-defines.h:
	* clutter/cogl/gles/cogl.c: Update GLES implementation of COGL.

	* clutter/clutter-shader.c: Fix ClutterShader to use the new
	COGLhandle type instead of COGLhandlerARB.
2008-01-16 10:38:05 +00:00
Emmanuele Bassi
454b6011b6 2008-01-16 Emmanuele Bassi <ebassi@openedhand.com>
Define COGLhandleARB. (patch by Johan Bilien)

	* clutter/cogl/gles/cogl-defines.h: Define COGLhandleARB on
	GLES as well (using GLuint)

	* clutter/cogl/gles/cogl.c: Use COGLhandleARB.
2008-01-16 10:02:56 +00:00
Emmanuele Bassi
db990ccac8 2008-01-14 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/cogl/gl/cogl.c (cogl_get_proc_address): Implement non-GLX
	version using GModule and looking up the symbol from the running
	process. It should work when linked to library providing the
	requested function. (#696, Tommi Komulainen)
2008-01-14 11:52:04 +00:00
Øyvind Kolås
063386c1e2 Added COGLhandleARB since the underlying type on OSX is void*,
patch from Tommi Komulainen <tommi.komulainen@iki.fi>, (#694)
* clutter/cogl/gl/cogl-defines.h.in: Added COGLhandleARB typedef.
* clutter/cogl/cogl.h:
* clutter/cogl/gl/cogl.c:
* clutter/clutter-shader.c: Use COGLhandleARB instead of COGLint when
referring to program or shader handles.
2008-01-10 09:55:44 +00:00
Emmanuele Bassi
97dd890ae1 2007-12-24 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/cogl/cogl.h: Update cogl_clip_set() to accept the
	clip components as ClutterFixed values

	* clutter/cogl/gl/cogl.c (cogl_clip_set): Update the GL implementation
	of cogl_clip_set()

	* clutter/cogl/gles/cogl.c:
	(cogl_rectangle_internal): Provide an internal, inlined rectangle
	drawing	function using fixed point values, to be shared by
	cogl_clip_set() and cogl_rectangle()

	(cogl_clip_set), (cogl_rectangle): Update the GLES implementation
	of cogl_clip_set() and cogl_rectangle() to use the new internal
	rectangle drawing function

	* clutter/clutter-actor.c: Make the clip an array of ClutterUnit
	values instead of pixel-based; this allows higher precision and
	device independence

	(_clutter_actor_apply_modelview_transform): Pass the clip
	components converting from units to fixed point values, using
	the new cogl_clip_set() signature

	(clutter_actor_get_property), (clutter_actor_set_clip),
	(clutter_actor_get_clip): Update the accessors of the clip
	property
2007-12-24 12:53:04 +00:00
Emmanuele Bassi
e3ebfdb14b 2007-12-21 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/clutter-group.c:
	* clutter/clutter-group.h: Add the clutter_group_add() convenience
	function; it's now "undeprecated" and implemented as a macro

	* clutter/clutter-stage.h: Add clutter_stage_add() as a convenience
	macro

	* clutter/cogl/cogl.h: Include just the needed headers instead
	of the whole clutter.h; this avoids rebuild cogl when not needed
2007-12-21 16:04:39 +00:00
Tomas Frydrych
263d8ea5a0 2007-12-19 Tomas Frydrych <tf@openedhand.com>
* clutter/Makefile.am:
	* clutter/cogl/gl/cogl-defines.h.in:
	* clutter/pango/pangoclutter-render.c:
	* configure.ac:
	Fixes to allow cross-compilation with mingw (patch by Neil
	Roberts).
	Removed trailing whitespace.
2007-12-19 16:16:10 +00:00
Matthew Allum
9a2a4ef7b3 2007-12-14 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/gl/cogl-defines.h.in:
        * clutter/cogl/gles/cogl-defines.h:
        Add CLUTTER_COGL_HAS_GL/GLES defines
2007-12-14 12:36:45 +00:00
Øyvind Kolås
e92b864dff Support for shaders in clutter. At the moment limited to drivers
providing GLSL support.
* clutter/cogl/cogl.h: added rather direct binding of needed for glsl
shaders.
* clutter/cogl/gl/cogl-defines.h.in:
* clutter/cogl/gl/cogl.c:
* clutter/cogl/gles/cogl-defines.h: added stubs.
* clutter/cogl/gles/cogl.c: added stubs.
* clutter/glx/clutter-stage-glx.c:
(clutter_stage_glx_realize): unrelated memory management sanity fix.
(clutter_stage_glx_unrealize): unbind all shaders on stage unrealize.
* clutter/Makefile.am: added clutter-shader.[ch]
* clutter/clutter-actor.[ch]: adding shader capability to 
actors.
* clutter/clutter-feature.h: added CLUTTER_FEATURE_SHADERS_GLSL
* clutter/clutter-private.h: added stack of shaders to context.
* clutter/clutter-shader.[ch]: new.
* tests/Makefile.am: added shader test.
* tests/test-shader.c: (frame_cb), (main): simple shader test,
cycle through the inline shader with right/left mouse buttons.
2007-12-03 16:29:18 +00:00
Matthew Allum
24d43aee02 2007-11-21 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/gles/cogl.c: (cogl_fog_set):
        Minor fixes for fog on GLES.
2007-11-21 12:30:50 +00:00
Emmanuele Bassi
99acb8e9c1 2007-11-21 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/cogl/cogl.h: Add cogl_fog_set() abstracting the
	glFog() functions and enabling the GL_FOG flag.

	* clutter/cogl/gl/cogl.c: Add GL implementation of cogl_fog_set().
	
	* clutter/cogl/gles/cogl.c: Add GL/ES implementation of
	cogl_fog_set().

	* clutter.symbols: Add new symbols.

	* clutter/clutter-stage.h: Add API to enable depth cueing on
	the stage using a linear GL fog, and to set the parameters
	for it (#637).

	* clutter/clutter-stage.c (clutter_stage_paint): Enable the
	GL fog if the ClutterStage:use-fog property is true.

	* tests/test-depth.c: Test the new stage API.
2007-11-21 11:55:26 +00:00
Matthew Allum
3607a470aa 2007-11-15 Matthew Allum <mallum@openedhand.com>
* clutter/Makefile.am:
        * clutter/eglx/Makefile.am:
        * clutter/eglx/clutter-backend-egl.c:
        * clutter/eglx/clutter-backend-egl.h:
        * clutter/eglx/clutter-eglx.h:
        * clutter/eglx/clutter-event-egl.c:
        * clutter/eglx/clutter-stage-egl.c:
        * clutter/eglx/clutter-stage-egl.h:
        * clutter/glx/Makefile.am:
        * clutter/glx/clutter-backend-glx.c:
        * clutter/glx/clutter-backend-glx.h:
        * clutter/glx/clutter-event-glx.c:
        * clutter/glx/clutter-glx.h:
        * clutter/glx/clutter-stage-glx.c:
        * clutter/glx/clutter-stage-glx.h:
        * clutter/x11/Makefile.am:
        * clutter/x11/clutter-backend-x11-private.h:
        * clutter/x11/clutter-backend-x11.c:
        * clutter/x11/clutter-backend-x11.h:
        * clutter/x11/clutter-event-x11.c:
        * clutter/x11/clutter-stage-x11.c:
        * clutter/x11/clutter-stage-x11.h:
        * clutter/x11/clutter-x11.h:
        Create a new X11 backend class of which EGL and GLX 'real' backends
        then subclass. Effectively shares all X11 code between both backends
        avoids code duplication and brings many missing features to EGL X
        backend. Requires some cleanup and testing. (#518)

        * clutter/cogl/gles/cogl.c: (cogl_color):
        Add define to use color4ub only if configure finds it.
        If not fall back to old code.

        * configure.ac:
        Drop support for vincent checks.
        Drop sdles backend.
        Specifically check for color4ub call.
2007-11-15 14:45:27 +00:00
Robert Bradford
6997c45f84 2007-11-08 Rob Bradford <rob@openedhand.com>
* clutter/cogl/gles/cogl.c: (cogl_color):
	Switch over to using glColor4ub in the GLES backend. It's available in
	the header file but missing in the reference manual.
2007-11-08 21:23:53 +00:00
Emmanuele Bassi
6fd7fbf460 2007-10-29 Emmanuele Bassi <ebassi@openedhand.com>
* configure.ac:
	* clutter/cogl/gl/cogl-defines.h.in: The OS X backend has a funny
	OpenGL header location, so it basically did break every application
	including clutter/cogl.h because the GL header inclusion depended
	on symbols defined into Clutter's config.h. Now, we define the
	GL header into the configure template and use it to create the
	cogl-defines.h file cogl.h includes.
2007-10-29 16:50:34 +00:00
Matthew Allum
737ac37f27 2007-10-26 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-texture.c:
        * clutter/cogl/cogl.h:
        * clutter/cogl/gl/cogl-defines.h:
        * clutter/cogl/gles/cogl-defines.h:
        * clutter/cogl/gl/cogl.c:
        * clutter/cogl/gles/cogl.c:
        Switch from use of guint to COGLuint. Avoids problems when
        guint != GLuint on some platforms, i.e OSX.
        (Tommi Komulainen, #526)

        * clutter/Makefile.am:
        * clutter/osx/Makefile.am:
        * clutter/osx/clutter-backend-osx.c:
        * clutter/osx/clutter-backend-osx.h:
        * clutter/osx/clutter-event-osx.c:
        * clutter/osx/clutter-osx.h:
        * clutter/osx/clutter-stage-osx.c:
        * clutter/osx/clutter-stage-osx.h:
        * configure.ac:
        Add initial Cocoa/OSX Backend (by Tommi Komulainen, see #526)
2007-10-26 22:06:45 +00:00
Emmanuele Bassi
adb5d0275f 2007-10-25 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/cogl/cogl.h: Do not include <clutter/clutter.h>.
2007-10-25 14:43:55 +00:00
Tomas Frydrych
922a7e4d21 2007-10-15 Tomas Frydrych <tf@o-hand.com>
* clutter/cogl/gl/cogl-defines.h:
	* clutter/cogl/gl/cogl.c:
	Fixed up GL include for windows.
2007-10-15 19:19:42 +00:00
Tomas Frydrych
abd6832dd9 2007-10-12 Tomas Frydrych <tf@o-hand.com>
* clutter/clutter-actor.c:
        * clutter/clutter-backend.c:
        * clutter/clutter-behaviour-depth.c:
        * clutter/clutter-box.c:
        * clutter/clutter-clone-texture.c:
        * clutter/clutter-container.c:
        * clutter/clutter-entry.c:
        * clutter/clutter-feature.c:
        * clutter/clutter-fixed.c:
        * clutter/clutter-group.c:
        * clutter/clutter-hbox.c:
        * clutter/clutter-label.c:
        * clutter/clutter-layout.c:
        * clutter/clutter-media.c:
        * clutter/clutter-rectangle.c:
        * clutter/clutter-score.c:
        * clutter/clutter-script.c:
        * clutter/clutter-stage.c:
        * clutter/clutter-texture.c:
        * clutter/clutter-timeline.c:
        * clutter/clutter-timeout-pool.c:
        * clutter/clutter-vbox.c:
        * clutter/cogl/gl/cogl.c:
        * clutter/cogl/gles/cogl.c:
        * clutter/eglnative/clutter-backend-egl.c:
        * clutter/eglnative/clutter-event-egl.c:
        * clutter/eglnative/clutter-stage-egl.c:
        * clutter/eglx/clutter-backend-egl.c:
        * clutter/eglx/clutter-event-egl.c:
        * clutter/eglx/clutter-stage-egl.c:
        * clutter/glx/clutter-event-glx.c:
        * clutter/json/json-array.c:
        * clutter/json/json-generator.c:
        * clutter/json/json-node.c:
        * clutter/json/json-object.c:
        * clutter/json/json-parser.c:
        * clutter/sdl/clutter-backend-sdl.c:
        * clutter/sdl/clutter-event-sdl.c:
        * clutter/sdl/clutter-stage-sdl.c:

	Fixedup config.h inclusion (must always be bracketed with #ifdef
	HAVE_CONFIG_H).
2007-10-12 08:17:00 +00:00
Matthew Allum
1ceaf04ac7 2007-08-24 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-actor.c:
        * clutter/clutter-event.h:
        * clutter/clutter-main.c:
        * clutter/clutter-stage.c:
        * clutter/clutter-stage.h:
        * clutter/glx/clutter-backend-glx.c:
        * clutter/glx/clutter-backend-glx.h:
        * clutter/glx/clutter-event-glx.c:
        * clutter/glx/clutter-stage-glx.c:
        * clutter/glx/clutter-stage-glx.h:
        Add initial support for stage state events.
        Fix fullscreening for an already mapped stage.

        * tests/test-events.c:
        Print out info from the above. Blue button now toggles
        fullscreen.

        * clutter/clutter-effect.c:
        * clutter/clutter-effect.h:
        Add a setting for templates to ref or clone underlying
        timelines. (As to improve sync issues like those in foofone)

        * tests/test-timeline.c:
        Also add completed signals.

        * clutter/cogl/gles/cogl.c: (cogl_texture_image_2d):
        * configure.ac:
        Forward port from stable branch. RGB Image fixes gles
        and check for lower case libgles_cm.
2007-08-24 15:12:52 +00:00
Matthew Allum
8ad4dde16b 2007-08-13 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-actor.c:
        * clutter/clutter-actor.h:
        * clutter/clutter-event.c:
        * clutter/clutter-event.h:
        * clutter/clutter-main.c:
        * clutter/clutter-main.h:
        * clutter/clutter-private.h:
        * clutter/clutter-stage.c:
        * clutter/clutter-stage.h:
        * clutter/clutter-types.h:
        Initial implementation of actors emmitting event signals (423);
        - Actors set_reactive() to receive mouse events.
          (call clutter_enable_motion_events() for per action motion events)
        - clutter_stage_set_key_focus () to direct key events.
        - Events bubble up to parents (ending at stage)
          (original source identified by clutter_event_get_source())
        TODO:
        - enter/leave notifys for actors.
        - stage specific events - fullscreen
        - grabs

        * tests/test-events.c:
        Extend a little to use new API

        * clutter/cogl/gl/cogl.c:
        * clutter/glx/clutter-backend-glx.c:
        Move get_proc_address into cogl and out of backend.
        (shaders will need it)

        * clutter/clutter-group.c: (clutter_group_real_lower):
        Fix a minor compile warning.

        * TODO:
        Sync up.
2007-08-13 20:48:01 +00:00
Matthew Allum
363faccfd5 2007-08-07 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-fixed.c:
        * clutter/clutter-fixed.h:
        Add documentation.

        * clutter/cogl/gl/cogl.c: (cogl_perspective):
        Remove CFX_* shortened macros
2007-08-07 11:35:22 +00:00
Matthew Allum
8e749f599d 2007-07-24 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/gl/cogl-defines.h:
        Add  CGL_UNSIGNED_INT_8_8_8_8_REV (for big endian machines)
2007-07-24 16:50:34 +00:00
Matthew Allum
23c50938da 2007-07-24 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/gl/cogl-defines.h:
        Another GL_TEXTURE_RECTANGLE_ARB related fix (#404)
2007-07-24 16:42:50 +00:00
Matthew Allum
2bf94df497 2007-07-24 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/gles/cogl.c: (cogl_get_bitmasks):
        Fix typo calling glGetIntegerv rather than glGetInteger
2007-07-24 12:17:42 +00:00
Matthew Allum
86b869259e 2007-07-24 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/gl/cogl.c: (cogl_get_features):
        learn to use cpp properly.
2007-07-24 12:06:52 +00:00
Matthew Allum
e8c091573c 2007-07-24 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-media.c: (clutter_media_base_init):
        Remove #if 0! signal - assume causing issues with binding generation.
        (#407)

        * clutter/cogl/gl/cogl.c:
        Check GL_TEXTURE_RECTANGLE_ARB and GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB
        are defined in gl.h (#404)
2007-07-24 12:04:24 +00:00
Matthew Allum
8fcfa9e2db 2007-07-12 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-actor.c: (clutter_actor_paint):
        * clutter/clutter-stage.c: (clutter_stage_get_actor_at_pos):
        * clutter/cogl/cogl.h:
        * clutter/cogl/gl/cogl.c: (cogl_get_viewport):
        * clutter/cogl/gles/cogl.c: (cogl_get_viewport):
        Based on patch from Pan Bohui, See;
        http://bugzilla.openedhand.com/show_bug.cgi?id=390

        * TODO:
        More misc updates.
2007-07-12 10:15:19 +00:00
Matthew Allum
fda8a1d948 2007-06-29 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-texture.c: (texture_upload_data):
        Fix a SEGV for GL ES textures.

        * clutter/cogl/gles/cogl.c: (cogl_setup_viewport):
        Tweak default z_camera for 60 degrees like GL.

        * clutter/egl/clutter-backend-egl.c::
        * clutter/egl/clutter-stage-egl.c:
        Fix edpy usage (thanks to Kaj Gronholm).
2007-06-29 11:54:31 +00:00
Matthew Allum
ca450782cb 2007-06-28 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/gl/cogl.c: (cogl_setup_viewport):
        Improve fixed z_camera value for defualt perspective.
        Appears pixel perfect on ATI and Intel at least
2007-06-28 09:38:42 +00:00
Tomas Frydrych
761a5f4d9d tweaked z_camera constant for default 60 deg perspective angle 2007-06-26 16:07:14 +00:00
Tomas Frydrych
b6a703a99e changed ClutterPerspective.fovy from ClutterAngle to degrees 2007-06-25 13:43:13 +00:00
Matthew Allum
38e6cab1d8 2007-06-19 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-stage.c:
        * clutter/clutter-stage.h:
        * clutter/glx/clutter-stage-glx.c:
        * clutter/sdl/clutter-stage-sdl.c:
        Add window title setting/getting functionality.

        * clutter/clutter-event.c: (clutter_key_event_unicode):
        Remove uneeded convert case call.

        * clutter/cogl/gl/cogl.c: (cogl_rectangle)
        Use parameters correctly for underlying GL rect call.

        * tests/test-entry.c:
        Add a window title.
2007-06-19 09:10:37 +00:00
Matthew Allum
61c6c24dfa 2007-06-14 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/gl/cogl.c: (cogl_check_extension):
        Actually populate this func and remove the static alternate
        named one. Means GLX actually checks for available extensions.
        Other minor tidy ups.

        * clutter/glx/clutter-backend-glx.c:
        * clutter/glx/clutter-backend-glx.h:
        Add support for GLX_SGI_swap_control to do vblanking prefering
        over glXGetVideoSyncSGI. Should fix issues on Intel chips with
        very slow frame rates due to vblank problems.
        Thanks to  Michel Danzer for tips, see;
        http://bugs.freedesktop.org/show_bug.cgi?id=10542

        * test/test-actors.c:
        Change FPS to 60.
2007-06-14 12:54:47 +00:00
Tomas Frydrych
70a3c9fbe6 clutter_actor_project_point/vertices 2007-06-12 11:42:29 +00:00
Matthew Allum
2c40b4b53d 2007-06-08 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-actor.c:
        * clutter/clutter-debug.h:
        * clutter/clutter-main.c:
        * clutter/clutter-main.h:
        * clutter/clutter-private.h:
        * clutter/clutter-timeline.c:
        Add 'schedule' debug flag and new CLUTTER_TIMESTAMP macro.

        * clutter/clutter-texture.c:
        * clutter/clutter-texture.h:
        * clutter/cogl/cogl.h:
        * clutter/cogl/gl/cogl-defines.h:
        * clutter/cogl/gles/cogl-defines.h:
        * clutter/cogl/gl/cogl.c:
        * clutter/cogl/gles/cogl.c:
        Add initial experiemental YUV texture support.
        Move texture rect size checks into cogl.
        Better handle moving texture data from video -> system memory
        (if support available).
2007-06-07 23:51:53 +00:00
Tomas Frydrych
5b845d3940 fix z_camera calcualtion in gles/cogl 2007-05-29 07:26:32 +00:00
Matthew Allum
a2bd6de736 2007-05-28 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-backend.c:
        * clutter/clutter-backend.h:
        * clutter/glx/clutter-stage-glx.c:
        * clutter/glx/clutter-backend-glx.c:
        Fix up rendering pipeline removing clutter_backend_XXX_stage_paint
        and adding clutter_backend_XXX_redraw instead. Duplicates less
        code in backends, avoids clutter_actor_paint() getting called
        before stage is set up (viewport wise) and unbreaks things like
        picking.

        * clutter/clutter-actor.c:
        * clutter/clutter-actor.h:
        * clutter/clutter-main.c:
        * clutter/clutter-private.h:
        * clutter/clutter-stage.c: (clutter_stage_get_actor_at_pos):
        Redo picking functionality a different way (via color indexing)
        as to provide more flexibility, possibly speed and more likely
        work with GL/ES (doesn't currently however - not sure why).

        * clutter/clutter-group.c:
        Add groups own 'pick' method.

        * clutter/cogl/cogl.h:
        * clutter/cogl/gl/cogl.c:
        * clutter/cogl/gles/cogl.c:
        Move clipping funtionality into cogl.

        * clutter/cogl/gles/cogl-defines.h:
        Hack around missing BGR format in GL/ES.

        * clutter/egl/clutter-backend-egl.c:
        * clutter/egl/clutter-backend-egl.h:
        * clutter/egl/clutter-stage-egl.c:
        * clutter/sdl/clutter-backend-sdl.c:
        * clutter/sdl/clutter-backend-sdl.h:
        * clutter/sdl/clutter-event-sdl.c:
        * clutter/sdl/clutter-stage-sdl.c:
        Update backends to newer API.
        Add basic mouse event translation to SDL.
2007-05-28 18:49:34 +00:00
Tomas Frydrych
bf8996215e ClutterBehaviourEllipse api changes; z_camera calculation 2007-05-25 12:07:24 +00:00
Matthew Allum
d2efd34eb5 2007-05-25 Matthew Allum <mallum@openedhand.com>
* Makefile.am:
        Install a default flavour .pc file.

        * clutter/clutter-actor.c:
        Translate units correctly for translate()

        * clutter/clutter-feature.h:
        Add new texture features.

        * clutter/clutter-fixed.h:
        Add clutter angle conversion defines.

        * clutter/clutter-group.c:
        Use cogl not GL. Dont recurse on show all.

        * clutter/clutter-private.h:
        Remove sync_viewport.

        * clutter/clutter-rectangle.c:
        Fix cogl typo.

        * clutter/clutter-stage.c:
        * clutter/clutter-stage.h:
        Add perspective settings. Remove viewport_sync.
        Add audience stubs. Fix up actor_at_pos a little (still broken)

        * clutter/clutter-texture.h:
        * clutter/clutter-texture.c:
        Redo pixel uploading. Add initial (disabled) YUV support.

        * clutter/clutter-timeline.c:
        Fire 'completed' signal when looping.

        * clutter/cogl/gl/cogl.c:
        Move some backend checks here.

        * clutter/glx/clutter-backend-glx.c:
        Actually check target display has GLX ext.

        * clutter/glx/clutter-stage-glx.c:
        Handle offscreen failing more gracefully.

        * examples/Makefile.am:
        Use AM_LDFLAGS.

        * clutter/clutter-main.c:
        * clutter/clutter-feature.c:
        * clutter/clutter-backend.c:
        * clutter/clutter-alpha.c:
        Fix a compile warnings.

        * tests/Makefile.am:
        * tests/test-offscreen.c:
        * tests/test-scale.c:
        More tests.
2007-05-25 10:56:09 +00:00
Matthew Allum
ee928107cb 2007-05-16 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-backend.c:
        * clutter/clutter-backend.h:
        * clutter/clutter-feature.c:
        * clutter/clutter-feature.h:
        * clutter/clutter-main.c:
        * clutter/clutter-main.h:
        * clutter/clutter-private.h:
        * clutter/clutter-stage.c:
        * clutter/cogl/cogl.h:
        * clutter/cogl/gl/cogl.c:
        * clutter/cogl/gles/cogl.c:
        * clutter/glx/clutter-backend-glx.c:
        * clutter/glx/clutter-backend-glx.h:
        * clutter/glx/clutter-glx.h:
        * clutter/glx/clutter-stage-glx.c:
        * clutter/glx/clutter-stage-glx.h:
        Rejig the features() foo, moving mostly into backends/cogl.
2007-05-16 09:08:30 +00:00
Matthew Allum
2845bb5b74 2007-05-02 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-actor.c:
        * clutter/cogl/gles/cogl.c:
        Fix rotation + other fixed point cleanups.

        * clutter/clutter-texture.h:
        Sketch out an updated API.
2007-05-02 09:01:11 +00:00
Tomas Frydrych
78bf6ccb88 fixed sign problem in cogl_setup_vieport 2007-05-01 20:13:15 +00:00
Matthew Allum
45c8796631 2007-05-01 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-rectangle.c:
        Comment out color match check for now as appears to be causing
        borders to always get pained.

        * clutter/clutter-texture.h:
        Add some format defines (unused as yet)

        * clutter/cogl/gles/cogl.c:
        * clutter/egl/clutter-stage-egl.c:
        * configure.ac:
        Various OpenGL ES backend related fixes and tweaks.
2007-05-01 15:26:12 +00:00
Matthew Allum
866e4ed0dd 2007-04-28 Matthew Allum <mallum@openedhand.com>
* clutter/Makefile.am:
        * clutter/clutter-debug.h:
        * clutter/clutter-fixed.h:
        * clutter/clutter-main.c:
        * clutter/cogl/gles/Makefile.am:
        * clutter/cogl/gles/cogl-defines.h:
        * clutter/cogl/gles/cogl.c:
        * clutter/egl/clutter-backend-egl.c:
        * clutter/egl/clutter-backend-egl.h:
        * clutter/egl/clutter-stage-egl.c:
        * configure.ac:
        Populate most stubs for cogl GL/ES implementation.
        (against vincent - see http://svn.o-hand.com/repos/misc/ogles)
        Add various fixups to EGL backend.
        Code builds and runs (on 16bpp) but yet displays much (is close!)

        * clutter/pango/pangoclutter-render.c:
        comment out some rouge glBegin/end calls.
2007-04-28 00:37:11 +00:00
Matthew Allum
79469940bc 2007-04-27 Matthew Allum <mallum@openedhand.com>
* clutter/Makefile.am:
        * clutter/clutter-actor.c:
        * clutter/clutter-clone-texture.c:
        * clutter/clutter-rectangle.c:
        * clutter/clutter-stage.c:
        * clutter/clutter-texture.c:
        * clutter/cogl/cogl.h:
        * clutter/cogl/gl/Makefile.am:
        * clutter/cogl/gl/cogl-defines.h:
        * clutter/cogl/gl/cogl.c:
        * clutter/cogl/gles/Makefile.am:
        * clutter/cogl/gles/cogl-defines.h:
        * clutter/cogl/gles/cogl.c:
        * clutter/glx/Makefile.am:
        * clutter/glx/clutter-stage-glx.c:
        * clutter/pango/Makefile.am:
        * clutter/pango/pangoclutter-render.c:
        * configure.ac:
        Add initial 'cogl' implementation. 'cogl' is a simple abstration
        layer over GL and GL/ES used by clutter internally. It should
        eventually allow clutter applications to be run on both GL and GL/ES
        with just a recompile as well as provide more debugging and potentially
        profiling information for GL and GL/ES usage.

        This commit contains the initial GL implementation.
2007-04-27 21:13:06 +00:00
Matthew Allum
120a489067 2007-03-27 Matthew Allum <mallum@openedhand.com>
* clutter/cogl/Makefile.am:
        * clutter/cogl/cogl.h:
        * clutter/cogl/gles/Makefile.am:
        * clutter/cogl/gles/cogl.c:
        Begin poplulating cogl GLES code.

        * configure.ac:
        * clutter/egl/clutter-event-egl.c:
        * clutter/egl/clutter-stage-egl.c:
        * clutter/egl/clutter-stage-egl.h:
        * clutter/egl/clutter-backend-egl.c:
        * clutter/egl/clutter-backend-egl.h:
        * clutter/egl/clutter-egl.h:
        Add initial EGL/X backend work mostly ported from backend branch.
        Builds but untested as yet.

        * clutter/glx/clutter-stage-glx.c:
        Only include XFixes Header if we have have it.

        * clutter/clutter-behaviour.c: (clutter_behaviour_apply):
        * clutter/clutter-behaviour.h:
        Add clutter_behaviour_is_applied()
2007-03-27 21:09:11 +00:00
Emmanuele Bassi
1833d77594 Add header and compiler guards. 2007-03-27 09:38:35 +00:00
Matthew Allum
464f24fdc0 2007-03-27 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-feature.c:
        Rejig ifdef's a little. Make drm vblanking Linux only.

        * clutter/clutter-stage.c:
        * clutter/clutter-stage.h:
        Add a perspective boxed type.

        * clutter/glx/clutter-stage-glx.c:
        Add some FIXMEs

        * clutter/Makefile.am:
        * clutter/cogl/Makefile.am:
        * clutter/cogl/cogl.h:
        * clutter/cogl/gl/Makefile.am:
        * clutter/cogl/gl/cogl.c:
        * configure.ac:
        Very initial work on 'cogl' GL/GLES abstraction/utility code.
2007-03-26 23:18:39 +00:00