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Chris Forbes authored
As of ARB_gpu_shader5, textureGather doesn't always read the post-swizzle RED channel -- so we can't just look at the red swizzle state. Theoretically we could only flag the quirk if *some* green swizzle is in use, but that's probably more trouble than it's worth. Signed-off-by: Chris Forbes <chrisf@ijw.co.nz> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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