1 // Copyright (c) 2021 The Khronos Group Inc. 2 // Copyright (c) 2021 Valve Corporation 3 // Copyright (c) 2021 LunarG Inc. 4 // 5 // Licensed under the Apache License, Version 2.0 (the "License"); 6 // you may not use this file except in compliance with the License. 7 // You may obtain a copy of the License at 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 17 #ifndef SOURCE_OPT_INTERP_FIXUP_H 18 #define SOURCE_OPT_INTERP_FIXUP_H 19 20 #include "source/opt/ir_context.h" 21 #include "source/opt/module.h" 22 #include "source/opt/pass.h" 23 24 namespace spvtools { 25 namespace opt { 26 27 // Replaces overloaded internal form for GLSLstd450Interpolate* instructions 28 // with external form. Specifically, removes OpLoad from the first argument 29 // and replaces it with the pointer for the OpLoad. glslang generates the 30 // internal form. This pass is called as part of glslang HLSL legalization. 31 class InterpFixupPass : public Pass { 32 public: name()33 const char* name() const override { return "interp-fixup"; } 34 Status Process() override; 35 GetPreservedAnalyses()36 IRContext::Analysis GetPreservedAnalyses() override { 37 return IRContext::kAnalysisInstrToBlockMapping | 38 IRContext::kAnalysisDecorations | IRContext::kAnalysisCombinators | 39 IRContext::kAnalysisCFG | IRContext::kAnalysisDominatorAnalysis | 40 IRContext::kAnalysisLoopAnalysis | IRContext::kAnalysisNameMap | 41 IRContext::kAnalysisScalarEvolution | 42 IRContext::kAnalysisRegisterPressure | 43 IRContext::kAnalysisValueNumberTable | 44 IRContext::kAnalysisStructuredCFG | 45 IRContext::kAnalysisBuiltinVarId | 46 IRContext::kAnalysisIdToFuncMapping | IRContext::kAnalysisTypes | 47 IRContext::kAnalysisDefUse | IRContext::kAnalysisConstants; 48 } 49 }; 50 51 } // namespace opt 52 } // namespace spvtools 53 54 #endif // SOURCE_OPT_INTERP_FIXUP_H 55