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[dxso] Correctly handle multiplication by zero

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This commit is contained in:
Philip Rebohle 2021-09-07 20:10:45 +02:00 committed by Joshie
parent 804eca9cad
commit ebc5326ed5
2 changed files with 71 additions and 12 deletions
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70
src/dxso/dxso_compiler.cpp
View File

@ -1436,15 +1436,61 @@ namespace dxvk {
}
DxsoRegisterValue DxsoCompiler::emitMulOperand(
DxsoRegisterValue operand,
DxsoRegisterValue other) {
if (!m_moduleInfo.options.d3d9FloatEmulation)
return operand;
uint32_t boolId = getVectorTypeId({ DxsoScalarType::Bool, other.type.ccount });
uint32_t zeroId = m_module.constfReplicant(0.0f, other.type.ccount);
DxsoRegisterValue result;
result.type = operand.type;
result.id = m_module.opSelect(getVectorTypeId(result.type),
m_module.opFOrdEqual(boolId, other.id, zeroId), zeroId, operand.id);
return result;
}
DxsoRegisterValue DxsoCompiler::emitMul(
DxsoRegisterValue a,
DxsoRegisterValue b) {
auto az = emitMulOperand(a, b);
auto bz = emitMulOperand(b, a);
DxsoRegisterValue result;
result.type = a.type;
result.id = m_module.opFMul(getVectorTypeId(result.type), az.id, bz.id);
return result;
}
DxsoRegisterValue DxsoCompiler::emitFma(
DxsoRegisterValue a,
DxsoRegisterValue b,
DxsoRegisterValue c) {
auto az = emitMulOperand(a, b);
auto bz = emitMulOperand(b, a);
DxsoRegisterValue result;
result.type = a.type;
result.id = m_module.opFFma(getVectorTypeId(result.type), az.id, bz.id, c.id);
return result;
}
DxsoRegisterValue DxsoCompiler::emitDot(
DxsoRegisterValue a,
DxsoRegisterValue b) {
auto az = emitMulOperand(a, b);
auto bz = emitMulOperand(b, a);
DxsoRegisterValue dot;
dot.type = a.type;
dot.type.ccount = 1;
dot.id = m_module.opDot(getVectorTypeId(dot.type), a.id, b.id);
dot.id = m_module.opDot(getVectorTypeId(dot.type), az.id, bz.id);
return dot;
}
@ -1865,15 +1911,15 @@ namespace dxvk {
break;
case DxsoOpcode::Mad:
if (!m_moduleInfo.options.longMad) {
result.id = m_module.opFFma(typeId,
emitRegisterLoad(src[0], mask).id,
emitRegisterLoad(src[1], mask).id,
emitRegisterLoad(src[2], mask).id);
result.id = emitFma(
emitRegisterLoad(src[0], mask),
emitRegisterLoad(src[1], mask),
emitRegisterLoad(src[2], mask)).id;
}
else {
result.id = m_module.opFMul(typeId,
emitRegisterLoad(src[0], mask).id,
emitRegisterLoad(src[1], mask).id);
result.id = emitMul(
emitRegisterLoad(src[0], mask),
emitRegisterLoad(src[1], mask)).id;
result.id = m_module.opFAdd(typeId,
result.id,
@ -1881,9 +1927,9 @@ namespace dxvk {
}
break;
case DxsoOpcode::Mul:
result.id = m_module.opFMul(typeId,
emitRegisterLoad(src[0], mask).id,
emitRegisterLoad(src[1], mask).id);
result.id = emitMul(
emitRegisterLoad(src[0], mask),
emitRegisterLoad(src[1], mask)).id;
break;
case DxsoOpcode::Rcp:
result.id = m_module.opFDiv(typeId,

13
src/dxso/dxso_compiler.h
View File

@ -545,6 +545,19 @@ namespace dxvk {
DxsoRegisterValue emitSaturate(
DxsoRegisterValue srcValue);
DxsoRegisterValue emitMulOperand(
DxsoRegisterValue operand,
DxsoRegisterValue other);
DxsoRegisterValue emitMul(
DxsoRegisterValue a,
DxsoRegisterValue b);
DxsoRegisterValue emitFma(
DxsoRegisterValue a,
DxsoRegisterValue b,
DxsoRegisterValue c);
DxsoRegisterValue emitDot(
DxsoRegisterValue a,
DxsoRegisterValue b);