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

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• Hash : e2a8a69a
  Author :
  Date : 2021-01-04T23:52:02
  

  Vulkan: Move xfb emulation offset calculation to translator
  
  A new function is added by the translator to calculate the transform
  feedback offsets in the emulation path.  This function makes the
  generated code for transform feedback smaller.
  
  Bug: angleproject:3606
  Change-Id: I01460f907e20e2887cb720bddad96697fdcb0cf3
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2607492
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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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 *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 *getPreRotationMatrixRef() 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 *getPreRotationMatrixRef() 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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