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mutter/cogl/winsys/cogl-winsys-feature-functions.h

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cogl: Add the infrastructure for checking for winsys extensions This adds the framework needed to check for winsys specific extensions (such as GLX extensions) using a similar mechanism to the cogl-feature-functions header. There is a separate cogl-winsys-feature-functions header which will contain macros to list the extensions and functions. cogl_create_context_winsys now calls _cogl_feature_check for each of these functions. _cogl_feature_check has had to be changed to accept the driver prefix as the first parameter so that it can prepend "GLX" rather than "GL" in this case.
2010-06-02 16:55:56 +00:00
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 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/>.
*
*
*/
/* This can be included multiple times with different definitions for
the COGL_WINSYS_FEATURE_* functions */
Add a CoglTexturePixmapX11 texture backend This is a publicly exposed texture backend to create a texture which contains the contents of an X11 pixmap. The API is currently marked as experimental. The backend internally holds a handle to another texture. All of the backend virtuals simply redirect to the internal texture. The texture can optionally be automatically updated if the automatic_updates parameter is TRUE. If set then Cogl will listen for damage events on the pixmap and update the texture accordingly. Alternatively a damage object can be created externally and passed down to Cogl. The updates can be performed with XGetImage, XShmGetImage or the GLX_EXT_texture_pixmap extension. If the TFP extension is used it will optionally try to create a rectangle texture if the driver does not support NPOTs or it is forced through the COGL_PIXMAP_TEXTURE_RECTANGLE or CLUTTER_PIXMAP_TEXTURE_RECTANGLE environment variables. If the GLXFBConfig does not support mipmapping then it will fallback to using X{Shm,}GetImage. It keeps a separate texture around for this so that it can later start using the TFP texture again if the texture is later drawn with mipmaps disabled.
2010-05-25 17:56:14 +00:00
#ifdef COGL_HAS_GLX_SUPPORT
COGL_WINSYS_FEATURE_BEGIN (texture_from_pixmap,
"EXT\0",
"texture_from_pixmap\0",
COGL_WINSYS_FEATURE_TEXTURE_FROM_PIXMAP,
0)
COGL_WINSYS_FEATURE_FUNCTION (void, glXBindTexImage,
(Display *display,
GLXDrawable drawable,
int buffer,
int *attribList))
COGL_WINSYS_FEATURE_FUNCTION (void, glXReleaseTexImage,
(Display *display,
GLXDrawable drawable,
int buffer))
COGL_WINSYS_FEATURE_END ()
#endif
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