49 строки
1.7 KiB
C++
49 строки
1.7 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// //
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// DxilOutputColorBecomesConstant.cpp //
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// Copyright (C) Microsoft Corporation. All rights reserved. //
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// This file is distributed under the University of Illinois Open Source //
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// License. See LICENSE.TXT for details. //
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// //
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// Provides a pass to turn on the early-z flag //
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// //
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///////////////////////////////////////////////////////////////////////////////
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#include "dxc/DXIL/DxilModule.h"
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#include "dxc/DxilPIXPasses/DxilPIXPasses.h"
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#include "dxc/HLSL/DxilGenerationPass.h"
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#include "llvm/IR/Module.h"
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using namespace llvm;
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using namespace hlsl;
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class DxilForceEarlyZ : public ModulePass {
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public:
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static char ID; // Pass identification, replacement for typeid
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explicit DxilForceEarlyZ() : ModulePass(ID) {}
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StringRef getPassName() const override { return "DXIL Force Early Z"; }
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bool runOnModule(Module &M) override;
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};
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bool DxilForceEarlyZ::runOnModule(Module &M) {
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// This pass adds the force-early-z flag
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DxilModule &DM = M.GetOrCreateDxilModule();
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DM.m_ShaderFlags.SetForceEarlyDepthStencil(true);
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DM.ReEmitDxilResources();
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return true;
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}
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char DxilForceEarlyZ::ID = 0;
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ModulePass *llvm::createDxilForceEarlyZPass() { return new DxilForceEarlyZ(); }
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INITIALIZE_PASS(
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DxilForceEarlyZ, "hlsl-dxil-force-early-z",
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"HLSL DXIL Force the early Z global flag, if shader has no discard calls",
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false, false)
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