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

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• Hash : 4cef8a49
  Author :
  Date : 2019-11-26T00:04:00
  

  Metal: Support depthRange near > far
  
  Metal doesn't natively support near > far depthRange, need to
  emulate it via shader.
  
  Bug: angleproject:2634
  Change-Id: I1885cad3467478a0dcc4b25b7d41f980b9e03103
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1919282
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  

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• src/compiler/translator/TranslatorVulkan.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.
  //
  // TranslatorVulkan:
  //   A GLSL-based translator that outputs shaders that fit GL_KHR_vulkan_glsl.
  //   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
  //
  
  #ifndef COMPILER_TRANSLATOR_TRANSLATORVULKAN_H_
  #define COMPILER_TRANSLATOR_TRANSLATORVULKAN_H_
  
  #include "compiler/translator/Compiler.h"
  
  namespace sh
  {
  
  class TOutputVulkanGLSL;
  
  class TranslatorVulkan : public TCompiler
  {
    public:
      TranslatorVulkan(sh::GLenum type, ShShaderSpec spec);
  
    protected:
      ANGLE_NO_DISCARD bool translate(TIntermBlock *root,
                                      ShCompileOptions compileOptions,
                                      PerformanceDiagnostics *perfDiagnostics) override;
      bool shouldFlattenPragmaStdglInvariantAll() override;
  
      TIntermBinary *getDriverUniformNegViewportYScaleRef(const TVariable *driverUniforms) const;
      TIntermBinary *getDriverUniformDepthRangeReservedFieldRef(
          const TVariable *driverUniforms) const;
      // Subclass can call this method to transform the AST before writing the final output.
      // See TranslatorMetal.cpp.
      ANGLE_NO_DISCARD bool translateImpl(TIntermBlock *root,
                                          ShCompileOptions compileOptions,
                                          PerformanceDiagnostics *perfDiagnostics,
                                          const TVariable **driverUniformsOut,
                                          TOutputVulkanGLSL *outputGLSL);
  
      // Give subclass such as TranslatorMetal a chance to do depth transform before
      // TranslatorVulkan apply its own transform.
      ANGLE_NO_DISCARD virtual bool transformDepthBeforeCorrection(TIntermBlock *root,
                                                                   const TVariable *driverUniforms)
      {
          return true;
      }
  };
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TRANSLATORVULKAN_H_
  

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