kc3-lang/angle/src/compiler/translator/TranslatorMetalDirect/RewritePipelines.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/RewritePipelines.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_REWRITEPIPELINES_H_
  #define COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_REWRITEPIPELINES_H_
  
  #include "common/angleutils.h"
  #include "compiler/translator/Compiler.h"
  #include "compiler/translator/TranslatorMetalDirect/IdGen.h"
  #include "compiler/translator/TranslatorMetalDirect/Pipeline.h"
  #include "compiler/translator/TranslatorMetalDirect/RewriteGlobalQualifierDecls.h"
  #include "compiler/translator/TranslatorMetalDirect/SymbolEnv.h"
  
  namespace sh
  {
  
  // This rewrites all pipelines.
  //
  // For each pipeline:
  //    - Discover all variables that are used by the pipeline
  //    - Move the variables into an internal pipeline struct instance and update old variables to be
  //      member access instead.
  //    - Dependency inject the internal pipeline struct to all functions that access variables from
  //      the struct.
  //    - A new external pipeline struct is created if needed for impedance reasons. Otherwise the
  //      external and internal pipeline structs are the same.
  //    - Add `main` parameter or return value for the external pipeline struct as needed.
  //    - Inside `main`, map the external struct to the internal struct if they differ and is provided
  //      as a parameter to `main`.
  //    - Inside `main`, map the internal struct to the external struct if they differ and is returned
  //      from `main`.
  ANGLE_NO_DISCARD bool RewritePipelines(TCompiler &compiler,
                                         TIntermBlock &root,
                                         IdGen &idGen,
                                         DriverUniform &angleUniformsGlobalInstanceVar,
                                         SymbolEnv &symbolEnv,
                                         Invariants &invariants,
                                         PipelineStructs &outStructs);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_REWRITEPIPELINES_H_
  

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