Merge "bug#460672 framebuffer surface can\'t keep triple buffer if define NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3" am: b2e3095a60
am: 46f8beb07f

* commit '46f8beb07fe2fa28b1c216485b91b894a1c8625b':
  bug#460672 framebuffer surface can't keep triple buffer if define NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3