kc3-lang/angle/src/compiler/translator/TranslatorMetalDirect/ProgramPrelude.h

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• Hash : d7aa0130
  Author :
  Date : 2021-04-26T16:56:15
  

  Upstream Apple's direct-to-Metal backend: compile translator.
  
  This change is meant to merge the translator changes from Apple's
  direct-to-Metal backend. Taken from Kyle Piddington's CL:
  https://chromium-review.googlesource.com/c/angle/angle/+/2857366/
  The goal of this CL is to merge the translator code in a state that
  compiles, but not to switch the Metal backend over to use this
  translator backend yet.
  
  Bug: angleproject:5505
  Change-Id: I68a6354604498cd5fd1eb96c13fc56f3b38f2bd0
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2897536
  Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>
  

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• src/compiler/translator/TranslatorMetalDirect/ProgramPrelude.h

• //
  // Copyright 2020 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.
  //
  
  #ifndef COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_PROGRAMPRELUDE_H_
  #define COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_PROGRAMPRELUDE_H_
  
  #include <unordered_set>
  
  #include "common/angleutils.h"
  
  namespace sh
  {
  
  class TInfoSinkBase;
  class TIntermBlock;
  
  enum class MetalShaderType
  {
      None,
      Vertex,
      Fragment,
      Compute,  // Unused currently
      Count,
  };
  
  struct ProgramPreludeConfig
  {
    public:
      ProgramPreludeConfig() {}
      explicit ProgramPreludeConfig(MetalShaderType shaderType) : shaderType(shaderType) {}
      bool hasStructEq           = false;
      MetalShaderType shaderType = MetalShaderType::None;
  };
  
  // This emits fixed helper Metal code directly without adding code to the AST. This walks the AST to
  // figure out the required what prelude MSL code is needed for various things in the AST. You can
  // think of this as effectively inlining various portions of a helper library into the emitted
  // Metal program.
  ANGLE_NO_DISCARD bool EmitProgramPrelude(TIntermBlock &root,
                                           TInfoSinkBase &out,
                                           const ProgramPreludeConfig &ppc);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_PROGRAMPRELUDE_H_
  

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