b2e735ff7f
The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2011 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#ifndef __COGL_RENDERER_GLX_PRIVATE_H
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#define __COGL_RENDERER_GLX_PRIVATE_H
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#include <gmodule.h>
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#include "cogl-object-private.h"
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#include "cogl-xlib-renderer-private.h"
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typedef struct _CoglGLXRenderer
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{
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CoglXlibRenderer _parent;
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int glx_major;
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int glx_minor;
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int glx_error_base;
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int glx_event_base;
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gboolean is_direct;
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/* Vblank stuff */
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int dri_fd;
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/* GModule pointing to libGL which we use to get glX functions out of */
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GModule *libgl_module;
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/* Function pointers for core GLX functionality. We can't just link
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against these directly because we need to conditionally load
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libGL when we are using GLX so that it won't conflict with a GLES
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library if we are using EGL + GLES */
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void
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(* glXDestroyContext) (Display *dpy, GLXContext ctx);
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void
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(* glXSwapBuffers) (Display *dpy, GLXDrawable drawable);
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Bool
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(* glXQueryExtension) (Display *dpy, int *errorb, int *event);
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const char *
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(* glXQueryExtensionsString) (Display *dpy, int screen);
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Bool
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(* glXQueryVersion) (Display *dpy, int *maj, int *min);
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Bool
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(* glXIsDirect) (Display *dpy, GLXContext ctx);
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int
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(* glXGetFBConfigAttrib) (Display *dpy, GLXFBConfig config,
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int attribute, int *value);
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GLXWindow
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(* glXCreateWindow) (Display *dpy, GLXFBConfig config,
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Window win, const int *attribList);
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void
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(* glXDestroyWindow) (Display *dpy, GLXWindow window);
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GLXPixmap
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(* glXCreatePixmap) (Display *dpy, GLXFBConfig config,
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Pixmap pixmap, const int *attribList);
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void
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(* glXDestroyPixmap) (Display *dpy, GLXPixmap pixmap);
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GLXContext
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(* glXCreateNewContext) (Display *dpy, GLXFBConfig config,
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int renderType, GLXContext shareList,
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Bool direct);
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Bool
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(* glXMakeContextCurrent) (Display *dpy, GLXDrawable draw,
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GLXDrawable read, GLXContext ctx);
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void
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(* glXSelectEvent) (Display *dpy, GLXDrawable drawable,
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unsigned long mask);
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GLXFBConfig *
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(* glXGetFBConfigs) (Display *dpy, int screen, int *nelements);
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GLXFBConfig *
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(* glXChooseFBConfig) (Display *dpy, int screen,
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const int *attrib_list, int *nelements);
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XVisualInfo *
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(* glXGetVisualFromFBConfig) (Display *dpy, GLXFBConfig config);
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/* Function pointers for GLX specific extensions */
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#define COGL_WINSYS_FEATURE_BEGIN(a, b, c, d, e, f)
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#define COGL_WINSYS_FEATURE_FUNCTION(ret, name, args) \
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ret (APIENTRY * pf_ ## name) args;
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#define COGL_WINSYS_FEATURE_END()
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#include "cogl-winsys-glx-feature-functions.h"
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#undef COGL_WINSYS_FEATURE_BEGIN
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#undef COGL_WINSYS_FEATURE_FUNCTION
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#undef COGL_WINSYS_FEATURE_END
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} CoglGLXRenderer;
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#endif /* __COGL_RENDERER_GLX_PRIVATE_H */
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