sungmg/mutter-performance-source
1
0
Fork 0
Code Activity
mutter-performance-source/clutter/glx/clutter-glx-texture-pixmap.c
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

691 lines
18 KiB
C
Raw Blame History

/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Johan Bilien <johan.bilien@nokia.com>
* Matthew Allum <mallum@o-hand.com>
* Robert Bragg <bob@o-hand.com>
*
* Copyright (C) 2007 OpenedHand
*
* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* TODO:
* - Automagically handle named pixmaps, and window resizes (i.e
* essentially handle window id's being passed in) ?
*/
/**
* SECTION:clutter-glx-texture-pixmap
* @short_description: A texture which displays the content of an X Pixmap.
*
* #ClutterGLXTexturePixmap is a class for displaying the content of an
* X Pixmap as a ClutterActor. Used together with the X Composite extension,
* it allows to display the content of X Windows inside Clutter.
*
* The class requires the GLX_EXT_texture_from_pixmap OpenGL extension
* (http://people.freedesktop.org/~davidr/GLX_EXT_texture_from_pixmap.txt)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "../x11/clutter-x11-texture-pixmap.h"
#include "clutter-glx-texture-pixmap.h"
#include "clutter-glx.h"
#include "clutter-backend-glx.h"
#include "../clutter-util.h"
#include "../clutter-debug.h"
#include "cogl/cogl.h"
typedef void (*BindTexImage) (Display *display,
GLXDrawable drawable,
int buffer,
int *attribList);
typedef void (*ReleaseTexImage) (Display *display,
GLXDrawable drawable,
int buffer);
static BindTexImage _gl_bind_tex_image = NULL;
static ReleaseTexImage _gl_release_tex_image = NULL;
static gboolean _have_tex_from_pixmap_ext = FALSE;
static gboolean _ext_check_done = FALSE;
struct _ClutterGLXTexturePixmapPrivate
{
COGLenum target_type;
guint texture_id;
GLXPixmap glx_pixmap;
gboolean use_fallback;
gboolean bound;
};
static void
clutter_glx_texture_pixmap_update_area (ClutterX11TexturePixmap *texture,
gint x,
gint y,
gint width,
gint height);
static void
clutter_glx_texture_pixmap_create_glx_pixmap (ClutterGLXTexturePixmap *tex);
static ClutterX11TexturePixmapClass *parent_class = NULL;
G_DEFINE_TYPE (ClutterGLXTexturePixmap, \
clutter_glx_texture_pixmap, \
CLUTTER_X11_TYPE_TEXTURE_PIXMAP);
static gboolean
texture_bind (ClutterGLXTexturePixmap *tex)
{
GLuint handle = 0;
GLenum target = 0;
CoglHandle cogl_tex;
cogl_tex = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE(tex));
if (!cogl_texture_get_gl_texture (cogl_tex, &handle, &target))
return FALSE;
glEnable(target);
/* FIXME: fire off an error here? */
glBindTexture (target, handle);
return TRUE;
}
static void
clutter_glx_texture_pixmap_init (ClutterGLXTexturePixmap *self)
{
ClutterGLXTexturePixmapPrivate *priv;
priv = self->priv =
G_TYPE_INSTANCE_GET_PRIVATE (self,
CLUTTER_GLX_TYPE_TEXTURE_PIXMAP,
ClutterGLXTexturePixmapPrivate);
}
static void
clutter_glx_texture_pixmap_dispose (GObject *object)
{
ClutterGLXTexturePixmapPrivate *priv;
priv = CLUTTER_GLX_TEXTURE_PIXMAP (object)->priv;
if (priv->glx_pixmap != None)
{
clutter_x11_trap_x_errors ();
glXDestroyGLXPixmap (clutter_x11_get_default_display(),
priv->glx_pixmap);
XSync (clutter_x11_get_default_display(), FALSE);
clutter_x11_untrap_x_errors ();
priv->glx_pixmap = None;
}
G_OBJECT_CLASS (clutter_glx_texture_pixmap_parent_class)->dispose (object);
}
static void
clutter_glx_texture_pixmap_notify (GObject *object, GParamSpec *pspec)
{
if (g_str_equal (pspec->name, "pixmap"))
{
ClutterGLXTexturePixmap *texture = CLUTTER_GLX_TEXTURE_PIXMAP (object);
clutter_glx_texture_pixmap_create_glx_pixmap (texture);
}
}
static gboolean
create_cogl_texture (ClutterTexture *texture,
guint width,
guint height)
{
CoglHandle handle;
handle
= cogl_texture_new_with_size (width, height,
-1, FALSE,
COGL_PIXEL_FORMAT_RGBA_8888|COGL_BGR_BIT);
if (handle)
{
clutter_texture_set_cogl_texture (texture, handle);
CLUTTER_ACTOR_SET_FLAGS (texture, CLUTTER_ACTOR_REALIZED);
clutter_glx_texture_pixmap_update_area
(CLUTTER_X11_TEXTURE_PIXMAP (texture),
0, 0,
width, height);
return TRUE;
}
return FALSE;
}
static void
clutter_glx_texture_pixmap_realize (ClutterActor *actor)
{
ClutterGLXTexturePixmapPrivate *priv;
Pixmap pixmap;
guint pixmap_width, pixmap_height;
priv = CLUTTER_GLX_TEXTURE_PIXMAP (actor)->priv;
if (priv->use_fallback
|| !_have_tex_from_pixmap_ext
|| !clutter_feature_available (COGL_FEATURE_TEXTURE_NPOT))
{
/* Fall back */
CLUTTER_NOTE (TEXTURE, "texture from pixmap appears unsupported");
CLUTTER_NOTE (TEXTURE, "Falling back to X11 manual mechansim");
/* FIXME: Also check for sliced npots ? */
priv->use_fallback = TRUE;
CLUTTER_ACTOR_CLASS (clutter_glx_texture_pixmap_parent_class)->
realize (actor);
return;
}
g_object_get (actor,
"pixmap", &pixmap,
"pixmap-width", &pixmap_width,
"pixmap-height", &pixmap_height,
NULL);
if (!pixmap)
return;
if (!create_cogl_texture (CLUTTER_TEXTURE (actor),
pixmap_width, pixmap_height))
{
CLUTTER_NOTE (TEXTURE, "Unable to create a valid pixmap");
CLUTTER_NOTE (TEXTURE, "Falling back to X11 manual mechanism");
priv->use_fallback = TRUE;
CLUTTER_ACTOR_CLASS (clutter_glx_texture_pixmap_parent_class)->
realize (actor);
return;
}
CLUTTER_NOTE (TEXTURE, "texture pixmap realised");
}
static void
clutter_glx_texture_pixmap_unrealize (ClutterActor *actor)
{
ClutterGLXTexturePixmapPrivate *priv;
Display *dpy;
priv = CLUTTER_GLX_TEXTURE_PIXMAP (actor)->priv;
dpy = clutter_x11_get_default_display();
if (!_have_tex_from_pixmap_ext)
{
CLUTTER_ACTOR_CLASS (clutter_glx_texture_pixmap_parent_class)->
unrealize (actor);
return;
}
if (!CLUTTER_ACTOR_IS_REALIZED (actor))
return;
if (priv->glx_pixmap && priv->bound)
{
clutter_x11_trap_x_errors ();
(_gl_release_tex_image) (dpy,
priv->glx_pixmap,
GLX_FRONT_LEFT_EXT);
XSync (clutter_x11_get_default_display(), FALSE);
clutter_x11_untrap_x_errors ();
priv->bound = FALSE;
}
CLUTTER_ACTOR_UNSET_FLAGS (actor, CLUTTER_ACTOR_REALIZED);
}
static GLXFBConfig *
get_fbconfig_for_depth (guint depth)
{
GLXFBConfig *fbconfigs, *ret = NULL;
int n_elements, i, found;
Display *dpy;
int db, stencil, alpha, mipmap, rgba, value;
dpy = clutter_x11_get_default_display ();
fbconfigs = glXGetFBConfigs (dpy,
clutter_x11_get_default_screen (),
&n_elements);
db = G_MAXSHORT;
stencil = G_MAXSHORT;
mipmap = 0;
rgba = 0;
found = n_elements;
for (i = 0; i < n_elements; i++)
{
XVisualInfo *vi;
int visual_depth;
vi = glXGetVisualFromFBConfig (dpy,
fbconfigs[i]);
if (vi == NULL)
continue;
visual_depth = vi->depth;
XFree (vi);
if (visual_depth != depth)
continue;
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_ALPHA_SIZE,
&alpha);
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_BUFFER_SIZE,
&value);
if (value != depth && (value - alpha) != depth)
continue;
value = 0;
if (depth == 32)
{
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_BIND_TO_TEXTURE_RGBA_EXT,
&value);
if (value)
rgba = 1;
}
if (!value)
{
if (rgba)
continue;
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_BIND_TO_TEXTURE_RGB_EXT,
&value);
if (!value)
continue;
}
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_DOUBLEBUFFER,
&value);
if (value > db)
continue;
db = value;
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_STENCIL_SIZE,
&value);
if (value > stencil)
continue;
stencil = value;
found = i;
}
if (found != n_elements)
{
ret = g_malloc (sizeof (GLXFBConfig));
*ret = fbconfigs[found];
}
if (n_elements)
XFree (fbconfigs);
return ret;
}
static void
clutter_glx_texture_pixmap_free_glx_pixmap (ClutterGLXTexturePixmap *texture)
{
ClutterGLXTexturePixmapPrivate *priv = texture->priv;
Display *dpy;
dpy = clutter_x11_get_default_display ();
if (priv->glx_pixmap &&
priv->bound)
{
texture_bind (texture);
clutter_x11_trap_x_errors ();
(_gl_release_tex_image) (dpy,
priv->glx_pixmap,
GLX_FRONT_LEFT_EXT);
XSync (clutter_x11_get_default_display(), FALSE);
if (clutter_x11_untrap_x_errors ())
CLUTTER_NOTE (TEXTURE, "Failed to release?");
CLUTTER_NOTE (TEXTURE, "Destroyed pxm: %li", priv->glx_pixmap);
priv->bound = FALSE;
}
clutter_x11_trap_x_errors ();
if (priv->glx_pixmap)
glXDestroyGLXPixmap (dpy, priv->glx_pixmap);
XSync (dpy, FALSE);
clutter_x11_untrap_x_errors ();
priv->glx_pixmap = None;
}
static void
clutter_glx_texture_pixmap_create_glx_pixmap (ClutterGLXTexturePixmap *texture)
{
ClutterGLXTexturePixmapPrivate *priv = texture->priv;
GLXPixmap glx_pixmap = None;
int attribs[7], i = 0;
GLXFBConfig *fbconfig;
Display *dpy;
guint depth;
Pixmap pixmap;
guint pixmap_width, pixmap_height;
ClutterBackendGLX *backend_glx;
CLUTTER_NOTE (TEXTURE, "Creating GLXPixmap");
backend_glx = CLUTTER_BACKEND_GLX(clutter_get_default_backend ());
dpy = clutter_x11_get_default_display ();
priv->use_fallback = FALSE;
g_object_get (texture,
"pixmap-width", &pixmap_width,
"pixmap-height", &pixmap_height,
"pixmap-depth", &depth,
"pixmap", &pixmap,
NULL);
if (!pixmap)
{
goto cleanup;
}
fbconfig = get_fbconfig_for_depth (depth);
if (!fbconfig)
{
g_warning ("Could not find an FBConfig for selected pixmap");
goto cleanup;
}
attribs[i++] = GLX_TEXTURE_FORMAT_EXT;
if (depth == 24)
{
attribs[i++] = GLX_TEXTURE_FORMAT_RGB_EXT;
}
else if (depth == 32)
{
attribs[i++] = GLX_TEXTURE_FORMAT_RGBA_EXT;
}
else
{
g_warning ("Pixmap with depth bellow 24 are not supported");
goto cleanup;
}
attribs[i++] = GLX_MIPMAP_TEXTURE_EXT;
attribs[i++] = 0;
attribs[i++] = GLX_TEXTURE_TARGET_EXT;
if (clutter_feature_available (COGL_FEATURE_TEXTURE_NPOT))
attribs[i++] = GLX_TEXTURE_2D_EXT;
else
attribs[i++] = GLX_TEXTURE_RECTANGLE_EXT;
attribs[i++] = None;
clutter_x11_trap_x_errors ();
glx_pixmap = glXCreatePixmap (dpy,
*fbconfig,
pixmap,
attribs);
XSync (dpy, FALSE);
if (clutter_x11_untrap_x_errors ())
CLUTTER_NOTE (TEXTURE, "Failed to create GLXPixmap");
g_free (fbconfig);
cleanup:
if (priv->glx_pixmap)
clutter_glx_texture_pixmap_free_glx_pixmap (texture);
if (glx_pixmap != None)
{
priv->glx_pixmap = glx_pixmap;
if (!clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (texture)))
{
create_cogl_texture (CLUTTER_TEXTURE (texture),
pixmap_width,
pixmap_height);
}
CLUTTER_NOTE (TEXTURE, "Created GLXPixmap");
return;
}
else
{
priv->use_fallback = TRUE;
priv->glx_pixmap = None;
}
}
static void
clutter_glx_texture_pixmap_update_area (ClutterX11TexturePixmap *texture,
gint x,
gint y,
gint width,
gint height)
{
ClutterGLXTexturePixmapPrivate *priv;
Display *dpy;
CLUTTER_NOTE (TEXTURE, "Updaing texture pixmap");
priv = CLUTTER_GLX_TEXTURE_PIXMAP (texture)->priv;
dpy = clutter_x11_get_default_display();
if (!CLUTTER_ACTOR_IS_REALIZED (texture))
return;
if (priv->use_fallback)
{
CLUTTER_NOTE (TEXTURE, "Falling back to X11..");
parent_class->update_area (texture,
x, y,
width, height);
return;
}
if (priv->glx_pixmap == None)
return;
if (texture_bind (CLUTTER_GLX_TEXTURE_PIXMAP(texture)))
{
CLUTTER_NOTE (TEXTURE, "Really updating via GLX");
clutter_x11_trap_x_errors ();
(_gl_bind_tex_image) (dpy,
priv->glx_pixmap,
GLX_FRONT_LEFT_EXT,
NULL);
XSync (clutter_x11_get_default_display(), FALSE);
/* Note above fires X error for non name pixmaps - but
* things still seem to work - i.e pixmap updated
*/
if (clutter_x11_untrap_x_errors ())
CLUTTER_NOTE (TEXTURE, "Update bind_tex_image failed");
priv->bound = TRUE;
}
else
g_warning ("Failed to bind initial tex");
if (CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR(texture)))
clutter_actor_queue_redraw (CLUTTER_ACTOR(texture));
}
static void
clutter_glx_texture_pixmap_class_init (ClutterGLXTexturePixmapClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
ClutterX11TexturePixmapClass *x11_texture_class =
CLUTTER_X11_TEXTURE_PIXMAP_CLASS (klass);
g_type_class_add_private (klass, sizeof (ClutterGLXTexturePixmapPrivate));
parent_class = g_type_class_peek_parent(klass);
object_class->dispose = clutter_glx_texture_pixmap_dispose;
object_class->notify = clutter_glx_texture_pixmap_notify;
actor_class->realize = clutter_glx_texture_pixmap_realize;
actor_class->unrealize = clutter_glx_texture_pixmap_unrealize;
x11_texture_class->update_area = clutter_glx_texture_pixmap_update_area;
if (_ext_check_done == FALSE)
{
const gchar *glx_extensions = NULL;
glx_extensions =
glXQueryExtensionsString (clutter_x11_get_default_display (),
clutter_x11_get_default_screen ());
/* Check for the texture from pixmap extension */
if (cogl_check_extension ("GLX_EXT_texture_from_pixmap", glx_extensions))
{
_gl_bind_tex_image =
(BindTexImage)cogl_get_proc_address ("glXBindTexImageEXT");
_gl_release_tex_image =
(ReleaseTexImage)cogl_get_proc_address ("glXReleaseTexImageEXT");
if (_gl_bind_tex_image && _gl_release_tex_image)
_have_tex_from_pixmap_ext = TRUE;
}
_ext_check_done = TRUE;
}
}
/**
* clutter_glx_texture_pixmap_using_extension:
* @texture: A #ClutterGLXTexturePixmap
*
* Return value: A boolean indicating if the texture is using the
* GLX_EXT_texture_from_pixmap OpenGL extension or falling back to
* slower software mechanism.
*
* Since: 0.8
**/
gboolean
clutter_glx_texture_pixmap_using_extension (ClutterGLXTexturePixmap *texture)
{
ClutterGLXTexturePixmapPrivate *priv;
priv = CLUTTER_GLX_TEXTURE_PIXMAP (texture)->priv;
return (priv->use_fallback != FALSE);
}
/**
* clutter_glx_texture_pixmap_new_with_pixmap:
* @pixmap: the X Pixmap to which this texture should be bound
* @width: the width of the X pixmap
* @height: the height of the X pixmap
* @depth: the depth of the X pixmap
*
* Return value: A new #ClutterGLXTexturePixmap bound to the given X Pixmap
*
* Since: 0.8
**/
ClutterActor*
clutter_glx_texture_pixmap_new_with_pixmap (Pixmap pixmap)
{
ClutterActor *actor;
actor = g_object_new (CLUTTER_GLX_TYPE_TEXTURE_PIXMAP,
"pixmap", pixmap,
NULL);
return actor;
}
/**
* clutter_glx_texture_pixmap_new:
*
* Return value: A new #ClutterGLXTexturePixmap
*
* Since: 0.8
**/
ClutterActor *
clutter_glx_texture_pixmap_new (void)
{
ClutterActor *actor;
actor = g_object_new (CLUTTER_GLX_TYPE_TEXTURE_PIXMAP, NULL);
return actor;
}
View git blame Copy permalink