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

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• Hash : daeac238
  Author :
  Date : 2021-05-08T22:09:38
  

  Translator: Ensure structs and blocks are uniquely defined
  
  A new AST validation is added to ensure that the same TStructure or
  TInterfaceBlock is not redundantly defined.  This helps with SPIR-V
  generation by allowing the id to be used as key in a hash map that looks
  up the corresponding SPIR-V type id.
  
  A bug is fixed where the Vulkan driver uniform declaration created two
  identical declarations for ANGLEDepthRangeParams.
  
  A number of other bugs are also fixed in this change, where if a
  variable declaration is eliminated (for example due to constant folding,
  or inactive interface variable removal) and it contained a struct
  specifier, the struct declaration was also removed.  OutputGLSLBase had
  a hack where structs were declared on first encounter, which was
  incorrect as the scope of the declaration could change.  Those bugs are
  fixed and this hack is removed.
  
  Bug: angleproject:2733
  Bug: angleproject:4889
  Bug: angleproject:5936
  Change-Id: I8e13748c0bf552ae8b052249282769a1f0775603
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2881942
  Reviewed-by: Charlie Lao <cclao@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/compiler/translator/TranslatorMetal.h

• //
  // Copyright 2019 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.
  //
  // TranslatorMetal:
  //   A GLSL-based translator that outputs shaders that fit GL_KHR_vulkan_glsl.
  //   It takes into account some considerations for Metal backend also.
  //   The shaders are then fed into glslang to spit out SPIR-V.
  //   See: https://www.khronos.org/registry/vulkan/specs/misc/GL_KHR_vulkan_glsl.txt
  //
  //   The SPIR-V will then be translated to Metal Shading Language later in Metal backend.
  //
  
  #ifndef LIBANGLE_RENDERER_METAL_TRANSLATORMETAL_H_
  #define LIBANGLE_RENDERER_METAL_TRANSLATORMETAL_H_
  
  #include "compiler/translator/TranslatorVulkan.h"
  #include "compiler/translator/tree_util/DriverUniform.h"
  #include "compiler/translator/tree_util/SpecializationConstant.h"
  
  namespace sh
  {
  
  // TODO: http://anglebug.com/5339 Implement it using actual specialization constant. For now we are
  // redirecting to driver uniforms
  class SpecConstMetal : public SpecConst
  {
    public:
      SpecConstMetal(TSymbolTable *symbolTable, ShCompileOptions compileOptions, GLenum shaderType)
          : SpecConst(symbolTable, compileOptions, shaderType)
      {}
      ~SpecConstMetal() override {}
  
    private:
  };
  
  class DriverUniformMetal : public DriverUniform
  {
    public:
      DriverUniformMetal() : DriverUniform() {}
      ~DriverUniformMetal() override {}
  
      TIntermBinary *getHalfRenderAreaRef() const override;
      TIntermBinary *getFlipXYRef() const override;
      TIntermBinary *getNegFlipXYRef() const override;
      TIntermSwizzle *getNegFlipYRef() const override;
      TIntermBinary *getCoverageMaskFieldRef() const;
  
    protected:
      TFieldList *createUniformFields(TSymbolTable *symbolTable) override;
  };
  
  class TranslatorMetal : public TranslatorVulkan
  {
    public:
      TranslatorMetal(sh::GLenum type, ShShaderSpec spec);
  
    protected:
      ANGLE_NO_DISCARD bool translate(TIntermBlock *root,
                                      ShCompileOptions compileOptions,
                                      PerformanceDiagnostics *perfDiagnostics) override;
  
      ANGLE_NO_DISCARD bool transformDepthBeforeCorrection(
          TIntermBlock *root,
          const DriverUniform *driverUniforms) override;
  
      ANGLE_NO_DISCARD bool insertSampleMaskWritingLogic(TInfoSinkBase &sink,
                                                         TIntermBlock *root,
                                                         const DriverUniformMetal *driverUniforms);
      ANGLE_NO_DISCARD bool insertRasterizerDiscardLogic(TInfoSinkBase &sink, TIntermBlock *root);
  };
  
  }  // namespace sh
  
  #endif /* LIBANGLE_RENDERER_METAL_TRANSLATORMETAL_H_ */
  

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