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swr/rast: Slightly more efficient blend jit

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Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>
This commit is contained in:
Tim Rowley
2017-09-13 19:16:45 -05:00
parent 5033d49d5d
commit d18c2a1fa4
1 changed files with 10 additions and 20 deletions
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src/gallium/drivers/swr/rasterizer/jitter/blend_jit.cpp
+10 -20
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@@ -581,13 +581,13 @@ struct BlendJit : public Builder
// load src1
src1[i] = LOAD(pSrc1, { i });
}
Value* currentMask = VIMMED1(-1);
Value* currentSampleMask = VIMMED1(-1);
if (state.desc.alphaToCoverageEnable)
{
Value* pClampedSrc = FCLAMP(src[3], 0.0f, 1.0f);
uint32_t bits = (1 << state.desc.numSamples) - 1;
currentMask = FMUL(pClampedSrc, VBROADCAST(C((float)bits)));
currentMask = FP_TO_SI(FADD(currentMask, VIMMED1(0.5f)), mSimdInt32Ty);
currentSampleMask = FMUL(pClampedSrc, VBROADCAST(C((float)bits)));
currentSampleMask = FP_TO_SI(FADD(currentSampleMask, VIMMED1(0.5f)), mSimdInt32Ty);
}
// alpha test
@@ -766,34 +766,24 @@ struct BlendJit : public Builder
assert(!(state.desc.alphaToCoverageEnable));
// load current mask
Value* oMask = LOAD(ppoMask);
Value* sampleMasked = VBROADCAST(SHL(C(1), sampleNum));
oMask = AND(oMask, sampleMasked);
currentMask = AND(oMask, currentMask);
currentSampleMask = AND(oMask, currentSampleMask);
}
if(state.desc.sampleMaskEnable)
{
Value* sampleMask = LOAD(pBlendState, { 0, SWR_BLEND_STATE_sampleMask});
Value* sampleMasked = SHL(C(1), sampleNum);
sampleMask = AND(sampleMask, sampleMasked);
sampleMask = VBROADCAST(ICMP_SGT(sampleMask, C(0)));
sampleMask = S_EXT(sampleMask, mSimdInt32Ty);
currentMask = AND(sampleMask, currentMask);
}
if (state.desc.alphaToCoverageEnable)
{
Value* sampleMasked = SHL(C(1), sampleNum);
currentMask = AND(currentMask, VBROADCAST(sampleMasked));
currentSampleMask = AND(VBROADCAST(sampleMask), currentSampleMask);
}
if(state.desc.sampleMaskEnable || state.desc.alphaToCoverageEnable ||
state.desc.oMaskEnable)
{
// load coverage mask
// load coverage mask and mask off any lanes with no samples
Value* pMask = LOAD(ppMask);
currentMask = S_EXT(ICMP_UGT(currentMask, VBROADCAST(C(0))), mSimdInt32Ty);
Value* outputMask = AND(pMask, currentMask);
Value* sampleMasked = SHL(C(1), sampleNum);
currentSampleMask = AND(currentSampleMask, VBROADCAST(sampleMasked));
currentSampleMask = S_EXT(ICMP_UGT(currentSampleMask, VBROADCAST(C(0))), mSimdInt32Ty);
Value* outputMask = AND(pMask, currentSampleMask);
// store new mask
STORE(outputMask, GEP(ppMask, C(0)));
}