Topi Pohjolainen <topi.pohjolai...@intel.com> writes: > This is really not needed as blorp blit programs already sample > XRGB normally and get alpha channel set to 1.0 automatically by > the sampler engine. This is simply copied directly to the payload > of the render target write message and hence there is no need for > any additional blending support from the pixel processing pipeline. > > Fixes recently modified piglit test gl-3.2-layered-rendering-blit > on IVB. No regressions on IVB.
What about when you have a RGB-but-not-alpha gl format that's been promoted to an ARGB Mesa and BRW surface format by texformat.c? I don't think blorp's samplers have any overrides going on there.
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