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010d16f647
mutter/cogl/winsys
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Robert Bragg 010d16f647 Adds initial GLES2 integration support 
This makes it possible to integrate existing GLES2 code with
applications using Cogl as the rendering api.

Currently all GLES2 usage is handled with separate GLES2 contexts to
ensure that GLES2 api usage doesn't interfere with Cogl's own use of
OpenGL[ES]. The api has been designed though so we can provide tighter
integration later.

The api would allow us to support GLES2 virtualized on top of an
OpenGL/GLX driver as well as GLES2 virtualized on the core rendering api
of Cogl itself. Virtualizing the GLES2 support on Cogl will allow us to
take advantage of Cogl debugging facilities as well as let us optimize
the cost of allocating multiple GLES2 contexts and switching between
them which can both be very expensive with many drivers.

As as a side effect of this patch Cogl can also now be used as a
portable window system binding API for GLES2 as an alternative to EGL.

Parts of this patch are based on work done by Tomeu Vizoso
<tomeu.vizoso@collabora.com> who did the first iteration of adding GLES2
API support to Cogl so that WebGL support could be added to
webkit-clutter.

This patch adds a very minimal cogl-gles2-context example that shows how
to create a gles2 context, clear the screen to a random color and also
draw a triangle with the cogl api.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 4bb6eff3dbd50d8fef7d6bdbed55c5aaa70036a8)
2012-08-06 14:27:42 +01:00
..
cogl-texture-pixmap-x11-private.h Switch use of primitive glib types to c99 equivalents 2012-08-06 14:27:39 +01:00
cogl-texture-pixmap-x11.c Switch use of primitive glib types to c99 equivalents 2012-08-06 14:27:39 +01:00
cogl-texture-pixmap-x11.h Switch use of primitive glib types to c99 equivalents 2012-08-06 14:27:39 +01:00
cogl-winsys-egl-android-private.h Add a separate winsys vtable for each EGL platform 2011-12-08 17:38:25 +00:00
cogl-winsys-egl-android.c Adds initial GLES2 integration support 2012-08-06 14:27:42 +01:00
cogl-winsys-egl-feature-functions.h kms: Check for the right surfaceless extension depending on driver 2011-12-08 12:48:59 +00:00
cogl-winsys-egl-gdl-private.h Add a separate winsys vtable for each EGL platform 2011-12-08 17:38:25 +00:00
cogl-winsys-egl-gdl.c Adds initial GLES2 integration support 2012-08-06 14:27:42 +01:00
cogl-winsys-egl-kms-private.h egl: Split out the KMS winsys as overrides of the EGL winsys 2011-12-09 17:29:49 +00:00
cogl-winsys-egl-kms.c Adds initial GLES2 integration support 2012-08-06 14:27:42 +01:00
cogl-winsys-egl-null-private.h Add a separate winsys vtable for each EGL platform 2011-12-08 17:38:25 +00:00
cogl-winsys-egl-null.c Adds initial GLES2 integration support 2012-08-06 14:27:42 +01:00
cogl-winsys-egl-private.h Adds initial GLES2 integration support 2012-08-06 14:27:42 +01:00
cogl-winsys-egl-wayland-private.h Add a separate winsys vtable for each EGL platform 2011-12-08 17:38:25 +00:00
cogl-winsys-egl-wayland.c Adds initial GLES2 integration support 2012-08-06 14:27:42 +01:00
cogl-winsys-egl-x11-private.h Rename the EGL_X11 winsys to EGL_XLIB 2011-12-14 16:40:26 +00:00
cogl-winsys-egl-x11.c Adds initial GLES2 integration support 2012-08-06 14:27:42 +01:00
cogl-winsys-egl.c Adds initial GLES2 integration support 2012-08-06 14:27:42 +01:00
cogl-winsys-glx-feature-functions.h winsys-glx: Don't assume that copy_sub_buffer is synchronized 2012-03-15 15:48:13 +00:00
cogl-winsys-glx-private.h Add -Wmissing-declarations to maintainer flags and fix problems 2012-03-06 18:45:44 +00:00
cogl-winsys-glx.c Workaround drisw bug where clipped redraws don't work 2012-08-06 14:27:42 +01:00
cogl-winsys-private.h Adds initial GLES2 integration support 2012-08-06 14:27:42 +01:00
cogl-winsys-sdl-private.h Add -Wmissing-declarations to maintainer flags and fix problems 2012-03-06 18:45:44 +00:00
cogl-winsys-sdl.c Add support for the WebOS version of SDL 2012-08-06 14:27:41 +01:00
cogl-winsys-stub-private.h Make stub winsys into a proper winsys backend 2011-06-01 20:44:41 +01:00
cogl-winsys-stub.c Switch use of primitive glib types to c99 equivalents 2012-08-06 14:27:39 +01:00
cogl-winsys-wgl-feature-functions.h Add a WGL winsys 2011-05-10 17:58:41 +01:00
cogl-winsys-wgl-private.h Add -Wmissing-declarations to maintainer flags and fix problems 2012-03-06 18:45:44 +00:00
cogl-winsys-wgl.c Switch use of primitive glib types to c99 equivalents 2012-08-06 14:27:39 +01:00
cogl-winsys.c Switch use of primitive glib types to c99 equivalents 2012-08-06 14:27:39 +01:00