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0bd956b34b
Calling textureOffset() with an offset of <0, 0, 0> is equivalent to calliing texture(). We don't actually need to set up an offset, which causes a message header to be created. A fairly common pattern is to sample at a point with a bunch of offsets, and average them. It's natural to write all the lookups as textureOffset, but use <0, 0> for the center sample. shader-db results on Skylake: total instructions in shared programs: 9092095 -> 9092087 (-0.00%) instructions in affected programs: 2826 -> 2818 (-0.28%) helped: 12 HURT: 2 total cycles in shared programs: 70870166 -> 70870144 (-0.00%) cycles in affected programs: 15924 -> 15902 (-0.14%) helped: 2 HURT: 0 This also helps prevent code quality regressions in a future patch. Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by Jason Ekstrand <jason@jlekstrand.net> |
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