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

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• Hash : cc56e1aa
  Author :
  Date : 2021-04-09T23:35:07
  

  Vulkan: Remove special output of structs and keep them in AST
  
  The code that separated out declaration of nameless structs from uniform
  variable declarations is generalized to separate out declaration of all
  structs from uniform variable declarations.
  
  As a result, a pass that outputs the struct types at the top of the
  shader is no longer necessary.  The struct declarations are kept in the
  AST to be output to GLSL as they normally would when not used in
  conjunction with uniform variables.
  
  After this change, the Vulkan and Metal translators no longer intermix
  transformations and code generation; transformations are done first
  entirely in AST, and code generation is done at the end.
  
  Bug: angleproject:2461
  Bug: angleproject:4889
  Change-Id: Ieb4d3f7091845e50c3dc399603ab01182692521d
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2818153
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@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 and feeds them into
  //   glslang to spit out SPIR-V.
  //   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 SpecConst;
  class DriverUniform;
  
  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;
  
      // Subclass can call this method to transform the AST before writing the final output.
      // See TranslatorMetal.cpp.
      ANGLE_NO_DISCARD bool translateImpl(TInfoSinkBase &sink,
                                          TIntermBlock *root,
                                          ShCompileOptions compileOptions,
                                          PerformanceDiagnostics *perfDiagnostics,
                                          SpecConst *specConst,
                                          DriverUniform *driverUniforms);
  
      // 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 DriverUniform *driverUniforms)
      {
          return true;
      }
  
      // Generate SPIR-V out of intermediate GLSL through glslang.
      ANGLE_NO_DISCARD bool compileToSpirv(const TInfoSinkBase &glsl);
  };
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TRANSLATORVULKAN_H_
  

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