diff options
| author | Karol Herbst <[email protected]> | 2017-06-23 20:30:29 +0200 |
|---|---|---|
| committer | Ilia Mirkin <[email protected]> | 2017-07-21 23:45:18 -0400 |
| commit | f98a221f2d1dc250cbba8c8944c5db623c4ada0b (patch) | |
| tree | e208750cb142b38b8c148285c494e311684011a8 /src/gallium/drivers/nouveau | |
| parent | f9bfc9301466c3b0d4248627b301d2f37ce0c4ab (diff) | |
nv50/ir: disable mul+add to mad for precise instructions
fixes
missrendering in TombRaider
KHR-GL44.gpu_shader5.precise_qualifier
KHR-GL45.gpu_shader5.precise_qualifier
v4: disable opt only for MAD, it's fine for SAD
Signed-off-by: Karol Herbst <[email protected]>
Reviewed-by: Pierre Moreau <[email protected]>
Diffstat (limited to 'src/gallium/drivers/nouveau')
| -rw-r--r-- | src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp index df83f18ae83..dac3e6f814c 100644 --- a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp @@ -1677,7 +1677,8 @@ AlgebraicOpt::handleADD(Instruction *add) return false; bool changed = false; - if (!changed && prog->getTarget()->isOpSupported(OP_MAD, add->dType)) + // we can't optimize to MAD if the add is precise + if (!add->precise && prog->getTarget()->isOpSupported(OP_MAD, add->dType)) changed = tryADDToMADOrSAD(add, OP_MAD); if (!changed && prog->getTarget()->isOpSupported(OP_SAD, add->dType)) changed = tryADDToMADOrSAD(add, OP_SAD); @@ -1713,7 +1714,7 @@ AlgebraicOpt::tryADDToMADOrSAD(Instruction *add, operation toOp) return false; if (src->getInsn()->saturate || src->getInsn()->postFactor || - src->getInsn()->dnz) + src->getInsn()->dnz || src->getInsn()->precise) return false; if (toOp == OP_SAD) { |