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

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• Hash : c75473c2
  Author :
  Date : 2020-11-23T14:26:32
  

  Vulkan: Generalize FlipRotationSpecConst to SpecializationConstant
  
  Specialization constant are used not just for flip/rotation. It also
  used for other things. This CL merges all specialization constant usage
  (lineRasterEmulation, flip, rotation, halfRenderArea) into one class and
  rename FlipRotationSpecConst to SpecConst.
  
  Bug: b/173800146
  Change-Id: I8dc3354b6caedbb183cec29855fc1c301ec8872a
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2555812
  Commit-Queue: Charlie Lao <cclao@google.com>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/compiler/translator/TranslatorMetal.h

• //
  // Copyright (c) 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 (libANGLE-side).
  //   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)
          : SpecConst(symbolTable, compileOptions)
      {}
      ~SpecConstMetal() override {}
  
    private:
  };
  
  class DriverUniformMetal : public DriverUniform
  {
    public:
      DriverUniformMetal() : DriverUniform() {}
      ~DriverUniformMetal() override {}
  
      TIntermBinary *getCoverageMaskFieldRef() const;
  
    protected:
      TFieldList *createUniformFields(TSymbolTable *symbolTable) const 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(TIntermBlock *root,
                                                         const DriverUniformMetal *driverUniforms);
      ANGLE_NO_DISCARD bool insertRasterizerDiscardLogic(TIntermBlock *root);
  };
  
  }  // namespace sh
  
  #endif /* LIBANGLE_RENDERER_METAL_TRANSLATORMETAL_H_ */
  

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