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authorSamuel Pitoiset <[email protected]>2018-05-30 14:21:42 +0200
committerSamuel Pitoiset <[email protected]>2018-06-04 12:41:10 +0200
commite3e929f8c342b32dc8f5296adf8fb337866fa40a (patch)
treea1b59109c143e05e2ac3b830807dd9a56b49d7cc /src/broadcom/compiler/v3d33_tex.c
parente44f90eccfaec2a1b1e813f93497bb498181dd2f (diff)
nir: implement the GLSL equivalent of if simplication in nir_opt_if
This pass turns: if (cond) { } else { do_work(); } into: if (!cond) { do_work(); } else { } Here's the vkpipeline-db stats (from affected shaders) on Polaris10: Totals from affected shaders: SGPRS: 17272 -> 17296 (0.14 %) VGPRS: 18712 -> 18740 (0.15 %) Spilled SGPRs: 1179 -> 1142 (-3.14 %) Code Size: 1503364 -> 1515176 (0.79 %) bytes Max Waves: 916 -> 911 (-0.55 %) This pass only affects Serious Sam 2017 (Vulkan) on my side. The stats are not really good for now. Some shaders look quite dumb but this will be improved with further NIR passes, like ifs combination. Signed-off-by: Samuel Pitoiset <[email protected]> Reviewed-by: Timothy Arceri <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
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