[gtk+] (31 commits) Created branch wip/gdk-gl

[Emmanuele Bassi <ebassi src gnome org>]

The branch 'wip/gdk-gl' was created.

Summary of new commits:

  a6ee047... build: Require libepoxy
  5052aa4... Implement GdkGLContext and GdkGLPixelFormat
  a5da2ef... gdk: Make GdkGLPixelFormat less smart
  ffcd798... gtk: Add a GL drawing widget
  6d71c44... Improve documentation of GdkGLPixelFormat
  6b0fc7c... gl: Add a back pointer from the window to the context
  bc9180d... Improve documentation of GdkGLContext
  0500963... x11: Fix conversion of pixel format to GL attributes
  eb0e790... x11: Update pixel format after validation
  90cc774... x11: Add missing initialization
  686f9b4... x11: Update GL viewport on ConfigureNotify
  e18136f... tests/glarea: Add a button
  d713ae6... gdk: Add missing GDK_DEBUG token
  a71cec0... gdk: Rework the GL context update
  ca38070... tests/glarea: Remove explcit glFlush()
  54edcca... glarea: Unconditionally call gdk_gl_context_update()
  3d22378... gdk/x11: Add API to query the GLX version
  6313091... docs: Add some more documentation to GdkGLContext
  3054894... gdk: Add licensing notes for GdkGL*
  b7a5369... gtk: Document GtkGLArea
  4b5f540... gdk: Remove unused function
  0f47f8b... docs: Add Gdk OpenGL API to the reference
  4e84bf5... docs: Add GtkGLArea to the API reference
  fd24c99... gdk/x11: Plug a leak
  9082c07... gdk/x11: Adjust the pixel format's color size
  3398e2e... gdk: Add getters for GdkGLPixelFormat properties
  19a0a61... gl: Rework pixel format validation
  cf0b177... gdk/x11: Respect GdkGLPixelFormat:accum-size
  fb996ee... gdk: Add GdkGLPixelFormat:stereo
  7622a36... gdk: Document pixel format getters
  a98d8fd... glarea: Set app-paintable