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[dxbc] Implemented mad instruction

This commit is contained in:
Philip Rebohle 2017-12-11 14:36:35 +01:00
parent c246e03594
commit 22c3cd80a1
2 changed files with 24 additions and 0 deletions
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21
src/dxbc/dxbc_compiler.cpp
View File

@ -47,6 +47,9 @@ namespace dxvk {
case DxbcOpcode::Add:
return this->opAdd(ins);
case DxbcOpcode::Mad:
return this->opMad(ins);
case DxbcOpcode::Mul:
return this->opMul(ins);
@ -235,6 +238,24 @@ namespace dxvk {
}
void DxbcCompiler::opMad(const DxbcInstruction& ins) {
auto dstOp = ins.operand(0);
auto srcOp1 = ins.operand(dstOp.length());
auto srcOp2 = ins.operand(dstOp.length() + srcOp1.length());
auto srcOp3 = ins.operand(dstOp.length() + srcOp1.length() + srcOp2.length());
DxbcComponentMask mask = this->getDstOperandMask(dstOp);
DxbcValue src1 = this->loadOperand(srcOp1, mask, DxbcScalarType::Float32);
DxbcValue src2 = this->loadOperand(srcOp2, mask, DxbcScalarType::Float32);
DxbcValue src3 = this->loadOperand(srcOp3, mask, DxbcScalarType::Float32);
// TODO implement with native FMA instruction
DxbcValue val = m_gen->opMul(src1, src2);
val = m_gen->opAdd(val, src3);
val = this->applyResultModifiers(val, ins.token().control());
this->storeOperand(dstOp, val, mask);
}
void DxbcCompiler::opMul(const DxbcInstruction& ins) {
auto dstOp = ins.operand(0);
auto srcOp1 = ins.operand(dstOp.length());

3
src/dxbc/dxbc_compiler.h
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@ -50,6 +50,9 @@ namespace dxvk {
void opAdd(
const DxbcInstruction& ins);
void opMad(
const DxbcInstruction& ins);
void opMul(
const DxbcInstruction& ins);