kc3-lang/angle/src/compiler/translator/tree_util/DriverUniform.h

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• Hash : 77637f2d
  Author :
  Date : 2021-02-19T15:18:52
  

  Vulkan: Generate xfb support code in SPIR-V for emulation path
  
  This change moves the code generation at link time from source code to
  SPIR-V.  As a result, transform feedback extension and emulation paths
  are more similarly handled before SPIR-V transformation (they both store
  information identically in the ShaderInterfaceVariableInfoMap).
  
  This change gets rid of the @@ XFB-OUT @@ marker.  With no source code
  generation at link time, shader compilation can be moved to
  glCompileShader time.
  
  Bug: angleproject:4888
  Change-Id: I8cdb89c22b57ce48cf5d226b8e41622d9d550d46
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2713269
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  

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• src/compiler/translator/tree_util/DriverUniform.h

• //
  // Copyright 2020 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // DriverUniform.h: Add code to support driver uniforms
  //
  
  #ifndef COMPILER_TRANSLATOR_TREEUTIL_DRIVERUNIFORM_H_
  #define COMPILER_TRANSLATOR_TREEUTIL_DRIVERUNIFORM_H_
  
  #include "common/angleutils.h"
  #include "compiler/translator/Types.h"
  
  namespace sh
  {
  
  class TCompiler;
  class TIntermBlock;
  class TIntermNode;
  class TSymbolTable;
  class TIntermTyped;
  class TIntermSwizzle;
  class TIntermBinary;
  
  class DriverUniform
  {
    public:
      DriverUniform() : mDriverUniforms(nullptr) {}
      virtual ~DriverUniform() = default;
  
      bool addComputeDriverUniformsToShader(TIntermBlock *root, TSymbolTable *symbolTable);
      bool addGraphicsDriverUniformsToShader(TIntermBlock *root, TSymbolTable *symbolTable);
  
      TIntermBinary *getViewportRef() const;
      TIntermBinary *getAbcBufferOffsets() const;
      TIntermBinary *getXfbActiveUnpaused() const;
      TIntermBinary *getXfbVerticesPerInstance() const;
      TIntermBinary *getXfbBufferOffsets() const;
      TIntermBinary *getClipDistancesEnabled() const;
      TIntermBinary *getDepthRangeRef() const;
      TIntermBinary *getDepthRangeReservedFieldRef() const;
      TIntermBinary *getNumSamplesRef() const;
  
      virtual TIntermBinary *getFlipXYRef() const { return nullptr; }
      virtual TIntermBinary *getNegFlipXYRef() const { return nullptr; }
      virtual TIntermBinary *getFragRotationMatrixRef() const { return nullptr; }
      virtual TIntermBinary *getHalfRenderAreaRef() const { return nullptr; }
      virtual TIntermSwizzle *getNegFlipYRef() const { return nullptr; }
  
    protected:
      TIntermBinary *createDriverUniformRef(const char *fieldName) const;
      virtual TFieldList *createUniformFields(TSymbolTable *symbolTable) const;
      TType *createEmulatedDepthRangeType(TSymbolTable *symbolTable) const;
  
      const TVariable *mDriverUniforms;
  };
  
  class DriverUniformExtended : public DriverUniform
  {
    public:
      DriverUniformExtended() : DriverUniform() {}
      virtual ~DriverUniformExtended() override {}
  
      TIntermBinary *getFlipXYRef() const override;
      TIntermBinary *getNegFlipXYRef() const override;
      TIntermBinary *getFragRotationMatrixRef() const override;
      TIntermBinary *getHalfRenderAreaRef() const override;
      TIntermSwizzle *getNegFlipYRef() const override;
  
    protected:
      virtual TFieldList *createUniformFields(TSymbolTable *symbolTable) const override;
  };
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEUTIL_DRIVERUNIFORM_H_
  

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