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[dxso] Implement TexDepth

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This commit is contained in:
Georg Lehmann 2021-08-11 15:47:52 +02:00 committed by Joshie
parent 7acbd0f4e1
commit a2330b89d2
2 changed files with 27 additions and 0 deletions
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26
src/dxso/dxso_compiler.cpp
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@ -188,6 +188,8 @@ namespace dxvk {
return this->emitTextureSample(ctx);
case DxsoOpcode::TexKill:
return this->emitTextureKill(ctx);
case DxsoOpcode::TexDepth:
return this->emitTextureDepth(ctx);
case DxsoOpcode::TexM3x3Pad:
case DxsoOpcode::TexM3x2Pad:
@ -3055,6 +3057,30 @@ void DxsoCompiler::emitControlFlowGenericLoop(
}
}
void DxsoCompiler::emitTextureDepth(const DxsoInstructionContext& ctx) {
const uint32_t fType = m_module.defFloatType(32);
DxsoRegMask srcMask(true, true, false, false);
uint32_t r5 = emitRegisterLoad(ctx.src[0], srcMask).id;
uint32_t x = 0;
uint32_t y = 1;
uint32_t xValue = m_module.opCompositeExtract(fType, r5, 1, &x);
uint32_t yValue = m_module.opCompositeExtract(fType, r5, 1, &y);
// The docs say if yValue is 0 the result is 1.0 but native drivers return
// 0 for xValue <= 0. So we don't have to do anything special since -INF and
// NAN get clamped to 0 at the end of the shader.
uint32_t result = m_module.opFDiv(fType, xValue, yValue);
DxsoBaseRegister depth;
depth.id = { DxsoRegisterType::DepthOut, 0 };
DxsoRegisterPointer depthPtr = emitGetOperandPtr(depth, nullptr);
m_module.opStore(depthPtr.id, result);
}
uint32_t DxsoCompiler::emitSample(
bool projected,

1
src/dxso/dxso_compiler.h
View File

@ -638,6 +638,7 @@ namespace dxvk {
void emitTexCoord(const DxsoInstructionContext& ctx);
void emitTextureSample(const DxsoInstructionContext& ctx);
void emitTextureKill(const DxsoInstructionContext& ctx);
void emitTextureDepth(const DxsoInstructionContext& ctx);
uint32_t emitSample(
bool projected,