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st/glsl_to_tgsi: teach the DCE pass about bindless samplers/images

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When a texture (or an image) instruction uses a bindless sampler
(respectively a bindless image), make sure the DCE pass won't
remove code when the resource is a temporary variable.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Samuel Pitoiset 2017-03-29 01:22:47 +02:00
parent 5d59226a7f
commit 77cbded995
1 changed files with 15 additions and 0 deletions
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15
src/mesa/state_tracker/st_glsl_to_tgsi.cpp
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@ -5290,6 +5290,21 @@ glsl_to_tgsi_visitor::eliminate_dead_code(void)
}
}
}
if (inst->resource.file == PROGRAM_TEMPORARY) {
int src_chans;
src_chans = 1 << GET_SWZ(inst->resource.swizzle, 0);
src_chans |= 1 << GET_SWZ(inst->resource.swizzle, 1);
src_chans |= 1 << GET_SWZ(inst->resource.swizzle, 2);
src_chans |= 1 << GET_SWZ(inst->resource.swizzle, 3);
for (int c = 0; c < 4; c++) {
if (src_chans & (1 << c))
writes[4 * inst->resource.index + c] = NULL;
}
}
break;
}