kc3-lang/angle/src/compiler/translator/OutputVulkanGLSL.h

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• Hash : 1b680b77
  Author :
  Date : 2021-06-02T22:04:45
  

  Reland "Make SH_CLAMP_INDIRECT_ARRAY_BOUNDS do proper AST transformation"
  
  This is a reland of a474fd7de769ae817db83490d410510cdbed75b2
  
  The integer clamp used in this transformation is not available in es100
  shaders, and float clamp is used instead.
  
  Original change's description:
  > Make SH_CLAMP_INDIRECT_ARRAY_BOUNDS do proper AST transformation
  >
  > This translator flag adds a clamp to non-literal indices to arrays.  Two
  > strategies were provisioned, using the clamp intrinsic or a hand-written
  > function.   The latter is ununsed in angle, chromium, firefox and
  > webkit, so this change removes this option and uses the clamp intrinsic
  > unconditionally.
  >
  > The clamp itself was added at output generation time with special flags
  > set on the index node.  This is changed such that a proper AST
  > transformation is done and no-special handling would be necessary.
  >
  > Bug: angleproject:4361
  > Bug: angleproject:4889
  > Change-Id: Ieccfd2c1c347563fb5282e9fa66d39304e62f2ca
  > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2935041
  > Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  > Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  
  Bug: angleproject:4361
  Bug: angleproject:4889
  Change-Id: I9397ec7e6bdfb706c2a891b33fd3b2b79e883ccc
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2940902
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  

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• src/compiler/translator/OutputVulkanGLSL.h

• //
  // Copyright 2016 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.
  //
  // OutputVulkanGLSL:
  //   Code that outputs shaders that fit GL_KHR_vulkan_glsl, to be fed to glslang to generate
  //   SPIR-V.
  //   See: https://www.khronos.org/registry/vulkan/specs/misc/GL_KHR_vulkan_glsl.txt
  //
  
  #ifndef COMPILER_TRANSLATOR_OUTPUTVULKANGLSL_H_
  #define COMPILER_TRANSLATOR_OUTPUTVULKANGLSL_H_
  
  #include "compiler/translator/OutputGLSL.h"
  
  namespace sh
  {
  
  class TOutputVulkanGLSL : public TOutputGLSL
  {
    public:
      TOutputVulkanGLSL(TInfoSinkBase &objSink,
                        ShHashFunction64 hashFunction,
                        NameMap &nameMap,
                        TSymbolTable *symbolTable,
                        sh::GLenum shaderType,
                        int shaderVersion,
                        ShShaderOutput output,
                        bool forceHighp,
                        bool enablePrecision,
                        ShCompileOptions compileOptions);
  
      uint32_t nextUnusedBinding() { return mNextUnusedBinding++; }
      uint32_t nextUnusedInputLocation(uint32_t consumedCount)
      {
          uint32_t nextUnused = mNextUnusedInputLocation;
          mNextUnusedInputLocation += consumedCount;
          return nextUnused;
      }
      uint32_t nextUnusedOutputLocation(uint32_t consumedCount)
      {
          uint32_t nextUnused = mNextUnusedOutputLocation;
          mNextUnusedOutputLocation += consumedCount;
          return nextUnused;
      }
  
    protected:
      void writeLayoutQualifier(TIntermTyped *variable) override;
      void writeVariableType(const TType &type,
                             const TSymbol *symbol,
                             bool isFunctionArgument) override;
      bool writeVariablePrecision(TPrecision) override;
  
      // Every resource that requires set & binding layout qualifiers is assigned set 0 and an
      // arbitrary binding when outputting GLSL.  Every input/output that requires a location
      // layout qualifiers is assigned an arbitrary location as well.
      //
      // Glslang wrapper modifies set, binding and location decorations in SPIR-V directly.
      uint32_t mNextUnusedBinding;
      uint32_t mNextUnusedInputLocation;
      uint32_t mNextUnusedOutputLocation;
  
    private:
      bool mForceHighp;
      bool mEnablePrecision;
  };
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_OUTPUTVULKANGLSL_H_
  

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