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mutter-performance-source/cogl/cogl-texture-2d.c
Robert Bragg 9cf7aac80f Allow npot Texture2D creation with only basic npot support 
Cogl has feature flags for basic npot texture support and then separate
flags for npot + repeat and npot + mipmap. If those three features are
available then there is a feature for full-npot support too for
convenience. The cogl_texture_2d_new_ constructors were checking for
full npot support and failing if not available but since we expose the
fine grained features to the user the user should be able to check the
limitations of npot textures and still choose to allocate them.

_cogl_texture_2d_can_create() now only checks for basic npot support
when creating a npot texture.  Since this change also affects the
automagic cogl_texture_ constructors they now check for basic npot +
mipmap support before considering using a Texture2D.

Notably the cogl_texture_ constructors will try constructing a Texture2D
even if we don't have npot + repeat support since the alternative is a
sliced texture which will need manual repeating anyway. Accordingly the
Texture2D::can_hardware_repeat and ::transform_quad_coords_to_gl vfuncs
have been made aware of the npot + repeat feature flag.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 6f6c5734d076372d98d0ec331b177ef7d65aa67d)
2012-08-06 14:27:40 +01:00

919 lines
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-private.h"
#include "cogl-util.h"
#include "cogl-texture-private.h"
#include "cogl-texture-2d-private.h"
#include "cogl-texture-driver.h"
#include "cogl-context-private.h"
#include "cogl-object-private.h"
#include "cogl-journal-private.h"
#include "cogl-pipeline-opengl-private.h"
#include "cogl-framebuffer-private.h"
#ifdef COGL_HAS_EGL_SUPPORT
#include "cogl-winsys-egl-private.h"
#endif
#include <string.h>
#include <math.h>
#ifdef COGL_HAS_WAYLAND_EGL_SERVER_SUPPORT
#include "cogl-wayland-server.h"
#endif
static void _cogl_texture_2d_free (CoglTexture2D *tex_2d);
COGL_TEXTURE_DEFINE (Texture2D, texture_2d);
static const CoglTextureVtable cogl_texture_2d_vtable;
typedef struct _CoglTexture2DManualRepeatData
{
CoglTexture2D *tex_2d;
CoglMetaTextureCallback callback;
void *user_data;
} CoglTexture2DManualRepeatData;
static void
_cogl_texture_2d_set_wrap_mode_parameters (CoglTexture *tex,
GLenum wrap_mode_s,
GLenum wrap_mode_t,
GLenum wrap_mode_p)
{
CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
/* Only set the wrap mode if it's different from the current value
to avoid too many GL calls. Texture 2D doesn't make use of the r
coordinate so we can ignore its wrap mode */
if (tex_2d->wrap_mode_s != wrap_mode_s ||
tex_2d->wrap_mode_t != wrap_mode_t)
{
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
tex_2d->gl_texture,
tex_2d->is_foreign);
GE( ctx, glTexParameteri (GL_TEXTURE_2D,
GL_TEXTURE_WRAP_S,
wrap_mode_s) );
GE( ctx, glTexParameteri (GL_TEXTURE_2D,
GL_TEXTURE_WRAP_T,
wrap_mode_t) );
tex_2d->wrap_mode_s = wrap_mode_s;
tex_2d->wrap_mode_t = wrap_mode_t;
}
}
static void
_cogl_texture_2d_free (CoglTexture2D *tex_2d)
{
if (!tex_2d->is_foreign)
_cogl_delete_gl_texture (tex_2d->gl_texture);
/* Chain up */
_cogl_texture_free (COGL_TEXTURE (tex_2d));
}
static CoglBool
_cogl_texture_2d_can_create (unsigned int width,
unsigned int height,
CoglPixelFormat internal_format)
{
GLenum gl_intformat;
GLenum gl_type;
_COGL_GET_CONTEXT (ctx, FALSE);
/* If NPOT textures aren't supported then the size must be a power
of two */
if (!cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_NPOT_BASIC) &&
(!_cogl_util_is_pot (width) ||
!_cogl_util_is_pot (height)))
return FALSE;
ctx->driver_vtable->pixel_format_to_gl (ctx,
internal_format,
&gl_intformat,
NULL,
&gl_type);
/* Check that the driver can create a texture with that size */
if (!ctx->texture_driver->size_supported (ctx,
GL_TEXTURE_2D,
gl_intformat,
gl_type,
width,
height))
return FALSE;
return TRUE;
}
static void
_cogl_texture_2d_set_auto_mipmap (CoglTexture *tex,
CoglBool value)
{
CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
tex_2d->auto_mipmap = value;
}
static CoglTexture2D *
_cogl_texture_2d_create_base (unsigned int width,
unsigned int height,
CoglPixelFormat internal_format)
{
CoglTexture2D *tex_2d = g_new (CoglTexture2D, 1);
CoglTexture *tex = COGL_TEXTURE (tex_2d);
_cogl_texture_init (tex, &cogl_texture_2d_vtable);
tex_2d->width = width;
tex_2d->height = height;
tex_2d->mipmaps_dirty = TRUE;
tex_2d->auto_mipmap = TRUE;
/* We default to GL_LINEAR for both filters */
tex_2d->min_filter = GL_LINEAR;
tex_2d->mag_filter = GL_LINEAR;
/* Wrap mode not yet set */
tex_2d->wrap_mode_s = GL_FALSE;
tex_2d->wrap_mode_t = GL_FALSE;
tex_2d->is_foreign = FALSE;
tex_2d->format = internal_format;
return tex_2d;
}
CoglTexture2D *
cogl_texture_2d_new_with_size (CoglContext *ctx,
int width,
int height,
CoglPixelFormat internal_format,
GError **error)
{
CoglTexture2D *tex_2d;
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
/* Since no data, we need some internal format */
if (internal_format == COGL_PIXEL_FORMAT_ANY)
internal_format = COGL_PIXEL_FORMAT_RGBA_8888_PRE;
if (!_cogl_texture_2d_can_create (width, height, internal_format))
{
g_set_error (error, COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_SIZE,
"Failed to create texture 2d due to size/format"
" constraints");
return NULL;
}
internal_format = ctx->driver_vtable->pixel_format_to_gl (ctx,
internal_format,
&gl_intformat,
&gl_format,
&gl_type);
tex_2d = _cogl_texture_2d_create_base (width, height,
internal_format);
ctx->texture_driver->gen (ctx, GL_TEXTURE_2D, 1, &tex_2d->gl_texture);
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
tex_2d->gl_texture,
tex_2d->is_foreign);
GE( ctx, glTexImage2D (GL_TEXTURE_2D, 0, gl_intformat,
width, height, 0, gl_format, gl_type, NULL) );
return _cogl_texture_2d_object_new (tex_2d);
}
CoglTexture2D *
cogl_texture_2d_new_from_bitmap (CoglBitmap *bmp,
CoglPixelFormat internal_format,
GError **error)
{
CoglTexture2D *tex_2d;
CoglBitmap *dst_bmp;
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
uint8_t *data;
CoglContext *ctx;
_COGL_RETURN_VAL_IF_FAIL (bmp != NULL, NULL);
ctx = _cogl_bitmap_get_context (bmp);
internal_format =
_cogl_texture_determine_internal_format (cogl_bitmap_get_format (bmp),
internal_format);
if (!_cogl_texture_2d_can_create (cogl_bitmap_get_width (bmp),
cogl_bitmap_get_height (bmp),
internal_format))
{
g_set_error (error, COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_SIZE,
"Failed to create texture 2d due to size/format"
" constraints");
return NULL;
}
if ((dst_bmp = _cogl_texture_prepare_for_upload (bmp,
internal_format,
&internal_format,
&gl_intformat,
&gl_format,
&gl_type)) == NULL)
{
g_set_error (error, COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_FORMAT,
"Failed to prepare texture upload due to format");
return NULL;
}
tex_2d = _cogl_texture_2d_create_base (cogl_bitmap_get_width (bmp),
cogl_bitmap_get_height (bmp),
internal_format);
/* Keep a copy of the first pixel so that if glGenerateMipmap isn't
supported we can fallback to using GL_GENERATE_MIPMAP */
if (!cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN) &&
(data = _cogl_bitmap_map (dst_bmp,
COGL_BUFFER_ACCESS_READ, 0)))
{
CoglPixelFormat format = cogl_bitmap_get_format (dst_bmp);
tex_2d->first_pixel.gl_format = gl_format;
tex_2d->first_pixel.gl_type = gl_type;
memcpy (tex_2d->first_pixel.data, data,
_cogl_pixel_format_get_bytes_per_pixel (format));
_cogl_bitmap_unmap (dst_bmp);
}
ctx->texture_driver->gen (ctx, GL_TEXTURE_2D, 1, &tex_2d->gl_texture);
ctx->texture_driver->upload_to_gl (ctx,
GL_TEXTURE_2D,
tex_2d->gl_texture,
FALSE,
dst_bmp,
gl_intformat,
gl_format,
gl_type);
tex_2d->gl_format = gl_intformat;
cogl_object_unref (dst_bmp);
return _cogl_texture_2d_object_new (tex_2d);
}
CoglTexture2D *
cogl_texture_2d_new_from_data (CoglContext *ctx,
int width,
int height,
CoglPixelFormat format,
CoglPixelFormat internal_format,
int rowstride,
const uint8_t *data,
GError **error)
{
CoglBitmap *bmp;
CoglTexture2D *tex_2d;
_COGL_RETURN_VAL_IF_FAIL (format != COGL_PIXEL_FORMAT_ANY, NULL);
_COGL_RETURN_VAL_IF_FAIL (data != NULL, NULL);
/* Rowstride from width if not given */
if (rowstride == 0)
rowstride = width * _cogl_pixel_format_get_bytes_per_pixel (format);
/* Wrap the data into a bitmap */
bmp = cogl_bitmap_new_for_data (ctx,
width, height,
format,
rowstride,
(uint8_t *) data);
tex_2d = cogl_texture_2d_new_from_bitmap (bmp,
internal_format,
error);
cogl_object_unref (bmp);
return tex_2d;
}
CoglTexture2D *
cogl_texture_2d_new_from_foreign (CoglContext *ctx,
GLuint gl_handle,
int width,
int height,
CoglPixelFormat format,
GError **error)
{
/* NOTE: width, height and internal format are not queriable
* in GLES, hence such a function prototype.
*/
GLenum gl_error = 0;
GLint gl_compressed = GL_FALSE;
GLenum gl_int_format = 0;
CoglTexture2D *tex_2d;
if (!ctx->texture_driver->allows_foreign_gl_target (ctx, GL_TEXTURE_2D))
return NULL;
/* Make sure it is a valid GL texture object */
if (!ctx->glIsTexture (gl_handle))
return NULL;
/* Make sure binding succeeds */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D, gl_handle, TRUE);
if (ctx->glGetError () != GL_NO_ERROR)
return NULL;
/* Obtain texture parameters
(only level 0 we are interested in) */
#if HAVE_COGL_GL
if (ctx->driver == COGL_DRIVER_GL)
{
GE( ctx, glGetTexLevelParameteriv (GL_TEXTURE_2D, 0,
GL_TEXTURE_COMPRESSED,
&gl_compressed) );
{
GLint val;
GE( ctx, glGetTexLevelParameteriv (GL_TEXTURE_2D, 0,
GL_TEXTURE_INTERNAL_FORMAT,
&val) );
gl_int_format = val;
}
/* If we can query GL for the actual pixel format then we'll ignore
the passed in format and use that. */
if (!ctx->driver_vtable->pixel_format_from_gl_internal (ctx,
gl_int_format,
&format))
return NULL;
}
else
#endif
{
/* Otherwise we'll assume we can derive the GL format from the
passed in format */
ctx->driver_vtable->pixel_format_to_gl (ctx,
format,
&gl_int_format,
NULL,
NULL);
}
/* Note: We always trust the given width and height without querying
* the texture object because the user may be creating a Cogl
* texture for a texture_from_pixmap object where glTexImage2D may
* not have been called and the texture_from_pixmap spec doesn't
* clarify that it is reliable to query back the size from OpenGL.
*/
/* Validate width and height */
if (width <= 0 || height <= 0)
return NULL;
/* Compressed texture images not supported */
if (gl_compressed == GL_TRUE)
return NULL;
/* Note: previously this code would query the texture object for
whether it has GL_GENERATE_MIPMAP enabled to determine whether to
auto-generate the mipmap. This doesn't make much sense any more
since Cogl switch to using glGenerateMipmap. Ideally I think
cogl_texture_new_from_foreign should take a flags parameter so
that the application can decide whether it wants
auto-mipmapping. To be compatible with existing code, Cogl now
disables its own auto-mipmapping but leaves the value of
GL_GENERATE_MIPMAP alone so that it would still work but without
the dirtiness tracking that Cogl would do. */
/* Create new texture */
tex_2d = _cogl_texture_2d_create_base (width, height,
format);
_cogl_texture_2d_set_auto_mipmap (COGL_TEXTURE (tex_2d), FALSE);
/* Setup bitmap info */
tex_2d->is_foreign = TRUE;
tex_2d->mipmaps_dirty = TRUE;
tex_2d->format = format;
tex_2d->gl_texture = gl_handle;
tex_2d->gl_format = gl_int_format;
/* Unknown filter */
tex_2d->min_filter = GL_FALSE;
tex_2d->mag_filter = GL_FALSE;
return _cogl_texture_2d_object_new (tex_2d);
}
#if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base)
/* NB: The reason we require the width, height and format to be passed
* even though they may seem redundant is because GLES 1/2 don't
* provide a way to query these properties. */
CoglTexture2D *
_cogl_egl_texture_2d_new_from_image (CoglContext *ctx,
int width,
int height,
CoglPixelFormat format,
EGLImageKHR image,
GError **error)
{
CoglTexture2D *tex_2d;
GLenum gl_error;
_COGL_RETURN_VAL_IF_FAIL (_cogl_context_get_winsys (ctx)->constraints &
COGL_RENDERER_CONSTRAINT_USES_EGL,
NULL);
_COGL_RETURN_VAL_IF_FAIL (ctx->private_feature_flags &
COGL_PRIVATE_FEATURE_TEXTURE_2D_FROM_EGL_IMAGE,
NULL);
tex_2d = _cogl_texture_2d_create_base (width, height,
format);
ctx->texture_driver->gen (ctx, GL_TEXTURE_2D, 1, &tex_2d->gl_texture);
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
tex_2d->gl_texture,
FALSE);
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
ctx->glEGLImageTargetTexture2D (GL_TEXTURE_2D, image);
if (ctx->glGetError () != GL_NO_ERROR)
{
g_set_error (error,
COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_BAD_PARAMETER,
"Could not create a CoglTexture2D from a given EGLImage");
return NULL;
}
return _cogl_texture_2d_object_new (tex_2d);
}
#endif /* defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base) */
#ifdef COGL_HAS_WAYLAND_EGL_SERVER_SUPPORT
CoglTexture2D *
cogl_wayland_texture_2d_new_from_buffer (CoglContext *ctx,
struct wl_buffer *buffer,
GError **error)
{
if (wl_buffer_is_shm (buffer))
{
int stride = wl_shm_buffer_get_stride (buffer);
CoglPixelFormat format;
CoglPixelFormat internal_format = COGL_PIXEL_FORMAT_ANY;
switch (wl_shm_buffer_get_format (buffer))
{
#if G_BYTE_ORDER == G_BIG_ENDIAN
case WL_SHM_FORMAT_ARGB8888:
format = COGL_PIXEL_FORMAT_ARGB_8888_PRE;
break;
case WL_SHM_FORMAT_XRGB32:
format = COGL_PIXEL_FORMAT_ARGB_8888;
internal_format = COGL_PIXEL_FORMAT_RGB_888;
break;
#elif G_BYTE_ORDER == G_LITTLE_ENDIAN
case WL_SHM_FORMAT_ARGB8888:
format = COGL_PIXEL_FORMAT_BGRA_8888_PRE;
break;
case WL_SHM_FORMAT_XRGB8888:
format = COGL_PIXEL_FORMAT_BGRA_8888;
internal_format = COGL_PIXEL_FORMAT_BGR_888;
break;
#endif
default:
g_warn_if_reached ();
format = COGL_PIXEL_FORMAT_ARGB_8888;
}
return cogl_texture_2d_new_from_data (ctx,
buffer->width,
buffer->height,
format,
internal_format,
stride,
wl_shm_buffer_get_data (buffer),
error);
}
else
{
EGLImageKHR image;
CoglTexture2D *tex;
_COGL_RETURN_VAL_IF_FAIL (_cogl_context_get_winsys (ctx)->constraints &
COGL_RENDERER_CONSTRAINT_USES_EGL,
NULL);
image = _cogl_egl_create_image (ctx,
EGL_WAYLAND_BUFFER_WL,
buffer,
NULL);
tex = _cogl_egl_texture_2d_new_from_image (ctx,
buffer->width,
buffer->height,
COGL_PIXEL_FORMAT_ARGB_8888_PRE,
image,
error);
_cogl_egl_destroy_image (ctx, image);
return tex;
}
}
#endif /* COGL_HAS_WAYLAND_EGL_SERVER_SUPPORT */
void
_cogl_texture_2d_externally_modified (CoglTexture *texture)
{
if (!cogl_is_texture_2d (texture))
return;
COGL_TEXTURE_2D (texture)->mipmaps_dirty = TRUE;
}
void
_cogl_texture_2d_copy_from_framebuffer (CoglTexture2D *tex_2d,
int dst_x,
int dst_y,
int src_x,
int src_y,
int width,
int height)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
_COGL_RETURN_IF_FAIL (cogl_is_texture_2d (tex_2d));
/* Make sure the current framebuffers are bound, though we don't need to
* flush the clip state here since we aren't going to draw to the
* framebuffer. */
_cogl_framebuffer_flush_state (cogl_get_draw_framebuffer (),
_cogl_get_read_framebuffer (),
COGL_FRAMEBUFFER_STATE_ALL &
~COGL_FRAMEBUFFER_STATE_CLIP);
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
tex_2d->gl_texture,
tex_2d->is_foreign);
ctx->glCopyTexSubImage2D (GL_TEXTURE_2D,
0, /* level */
dst_x, dst_y,
src_x, src_y,
width, height);
tex_2d->mipmaps_dirty = TRUE;
}
static int
_cogl_texture_2d_get_max_waste (CoglTexture *tex)
{
return -1;
}
static CoglBool
_cogl_texture_2d_is_sliced (CoglTexture *tex)
{
return FALSE;
}
static CoglBool
_cogl_texture_2d_can_hardware_repeat (CoglTexture *tex)
{
CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
_COGL_GET_CONTEXT (ctx, FALSE);
if (cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_NPOT_REPEAT) ||
(_cogl_util_is_pot (tex_2d->width) &&
_cogl_util_is_pot (tex_2d->height)))
return TRUE;
else
return FALSE;
}
static void
_cogl_texture_2d_transform_coords_to_gl (CoglTexture *tex,
float *s,
float *t)
{
/* The texture coordinates map directly so we don't need to do
anything */
}
static CoglTransformResult
_cogl_texture_2d_transform_quad_coords_to_gl (CoglTexture *tex,
float *coords)
{
/* The texture coordinates map directly so we don't need to do
anything other than check for repeats */
int i;
for (i = 0; i < 4; i++)
if (coords[i] < 0.0f || coords[i] > 1.0f)
{
/* Repeat is needed */
return (_cogl_texture_2d_can_hardware_repeat (tex) ?
COGL_TRANSFORM_HARDWARE_REPEAT :
COGL_TRANSFORM_SOFTWARE_REPEAT);
}
/* No repeat is needed */
return COGL_TRANSFORM_NO_REPEAT;
}
static CoglBool
_cogl_texture_2d_get_gl_texture (CoglTexture *tex,
GLuint *out_gl_handle,
GLenum *out_gl_target)
{
CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
if (out_gl_handle)
*out_gl_handle = tex_2d->gl_texture;
if (out_gl_target)
*out_gl_target = GL_TEXTURE_2D;
return TRUE;
}
static void
_cogl_texture_2d_set_filters (CoglTexture *tex,
GLenum min_filter,
GLenum mag_filter)
{
CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
if (min_filter == tex_2d->min_filter
&& mag_filter == tex_2d->mag_filter)
return;
/* Store new values */
tex_2d->min_filter = min_filter;
tex_2d->mag_filter = mag_filter;
/* Apply new filters to the texture */
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
tex_2d->gl_texture,
tex_2d->is_foreign);
GE( ctx, glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mag_filter) );
GE( ctx, glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter) );
}
static void
_cogl_texture_2d_pre_paint (CoglTexture *tex, CoglTexturePrePaintFlags flags)
{
CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
/* Only update if the mipmaps are dirty */
if ((flags & COGL_TEXTURE_NEEDS_MIPMAP) &&
tex_2d->auto_mipmap && tex_2d->mipmaps_dirty)
{
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
tex_2d->gl_texture,
tex_2d->is_foreign);
/* glGenerateMipmap is defined in the FBO extension. If it's not
available we'll fallback to temporarily enabling
GL_GENERATE_MIPMAP and reuploading the first pixel */
if (cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
ctx->texture_driver->gl_generate_mipmaps (ctx, GL_TEXTURE_2D);
#if defined(HAVE_COGL_GLES) || defined(HAVE_COGL_GL)
else
{
GE( ctx, glTexParameteri (GL_TEXTURE_2D,
GL_GENERATE_MIPMAP,
GL_TRUE) );
GE( ctx, glTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, 1, 1,
tex_2d->first_pixel.gl_format,
tex_2d->first_pixel.gl_type,
tex_2d->first_pixel.data) );
GE( ctx, glTexParameteri (GL_TEXTURE_2D,
GL_GENERATE_MIPMAP,
GL_FALSE) );
}
#endif
tex_2d->mipmaps_dirty = FALSE;
}
}
static void
_cogl_texture_2d_ensure_non_quad_rendering (CoglTexture *tex)
{
/* Nothing needs to be done */
}
static CoglBool
_cogl_texture_2d_set_region (CoglTexture *tex,
int src_x,
int src_y,
int dst_x,
int dst_y,
unsigned int dst_width,
unsigned int dst_height,
CoglBitmap *bmp)
{
CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
GLenum gl_format;
GLenum gl_type;
uint8_t *data;
_COGL_GET_CONTEXT (ctx, FALSE);
bmp = _cogl_texture_prepare_for_upload (bmp,
cogl_texture_get_format (tex),
NULL,
NULL,
&gl_format,
&gl_type);
/* If this touches the first pixel then we'll update our copy */
if (dst_x == 0 && dst_y == 0 &&
!cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN) &&
(data = _cogl_bitmap_map (bmp, COGL_BUFFER_ACCESS_READ, 0)))
{
CoglPixelFormat bpp =
_cogl_pixel_format_get_bytes_per_pixel (cogl_bitmap_get_format (bmp));
tex_2d->first_pixel.gl_format = gl_format;
tex_2d->first_pixel.gl_type = gl_type;
memcpy (tex_2d->first_pixel.data,
data + cogl_bitmap_get_rowstride (bmp) * src_y + bpp * src_x,
bpp);
_cogl_bitmap_unmap (bmp);
}
/* Send data to GL */
ctx->texture_driver->upload_subregion_to_gl (ctx,
GL_TEXTURE_2D,
tex_2d->gl_texture,
FALSE,
src_x, src_y,
dst_x, dst_y,
dst_width, dst_height,
bmp,
gl_format,
gl_type);
tex_2d->mipmaps_dirty = TRUE;
cogl_object_unref (bmp);
return TRUE;
}
static CoglBool
_cogl_texture_2d_get_data (CoglTexture *tex,
CoglPixelFormat format,
unsigned int rowstride,
uint8_t *data)
{
CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
int bpp;
GLenum gl_format;
GLenum gl_type;
_COGL_GET_CONTEXT (ctx, FALSE);
bpp = _cogl_pixel_format_get_bytes_per_pixel (format);
ctx->driver_vtable->pixel_format_to_gl (ctx,
format,
NULL, /* internal format */
&gl_format,
&gl_type);
ctx->texture_driver->prep_gl_for_pixels_download (ctx,
rowstride,
tex_2d->width,
bpp);
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
tex_2d->gl_texture,
tex_2d->is_foreign);
return ctx->texture_driver->gl_get_tex_image (ctx,
GL_TEXTURE_2D,
gl_format,
gl_type,
data);
}
static CoglPixelFormat
_cogl_texture_2d_get_format (CoglTexture *tex)
{
return COGL_TEXTURE_2D (tex)->format;
}
static GLenum
_cogl_texture_2d_get_gl_format (CoglTexture *tex)
{
return COGL_TEXTURE_2D (tex)->gl_format;
}
static int
_cogl_texture_2d_get_width (CoglTexture *tex)
{
return COGL_TEXTURE_2D (tex)->width;
}
static int
_cogl_texture_2d_get_height (CoglTexture *tex)
{
return COGL_TEXTURE_2D (tex)->height;
}
static CoglBool
_cogl_texture_2d_is_foreign (CoglTexture *tex)
{
return COGL_TEXTURE_2D (tex)->is_foreign;
}
static CoglTextureType
_cogl_texture_2d_get_type (CoglTexture *tex)
{
return COGL_TEXTURE_TYPE_2D;
}
static const CoglTextureVtable
cogl_texture_2d_vtable =
{
TRUE, /* primitive */
_cogl_texture_2d_set_region,
_cogl_texture_2d_get_data,
NULL, /* foreach_sub_texture_in_region */
_cogl_texture_2d_get_max_waste,
_cogl_texture_2d_is_sliced,
_cogl_texture_2d_can_hardware_repeat,
_cogl_texture_2d_transform_coords_to_gl,
_cogl_texture_2d_transform_quad_coords_to_gl,
_cogl_texture_2d_get_gl_texture,
_cogl_texture_2d_set_filters,
_cogl_texture_2d_pre_paint,
_cogl_texture_2d_ensure_non_quad_rendering,
_cogl_texture_2d_set_wrap_mode_parameters,
_cogl_texture_2d_get_format,
_cogl_texture_2d_get_gl_format,
_cogl_texture_2d_get_width,
_cogl_texture_2d_get_height,
_cogl_texture_2d_get_type,
_cogl_texture_2d_is_foreign,
_cogl_texture_2d_set_auto_mipmap
};
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