364f232507
It looks like it's not meant to be valid to create a framebuffer with an alpha-only texture as a render target on GLES. Since the following Mesa commit, this requirement is now enforced so that the test_framebuffer_get_bits test fails: http://cgit.freedesktop.org/mesa/mesa/commit/?id=cf300eaa Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit cfb0859cab843b000f4baa3ca155a245730edcfa)