kc3-lang/angle/src/compiler/translator/tree_ops/glsl/apple/AddAndTrueToLoopCondition.cpp

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• Hash : 9b63700b
  Author :
  Date : 2023-07-11T10:25:40
  

  Translator: Reorganize files
  
  This change makes the translator files more organized by:
  
  - Grouping files that are specific to a certain output under their own
    directory,
  - Moving transformations under tree_ops
  - Removing Direct from metal translation now that that SPIR-V Cross path
    is removed
  
  Bug: angleproject:6394
  Change-Id: Iaf5bb8d5604b84748dece029821b1f77b2813967
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4678780
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/compiler/translator/tree_ops/glsl/apple/AddAndTrueToLoopCondition.cpp

• //
  // 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.
  //
  
  #include "compiler/translator/tree_ops/glsl/apple/AddAndTrueToLoopCondition.h"
  
  #include "compiler/translator/Compiler.h"
  #include "compiler/translator/tree_util/IntermNode_util.h"
  #include "compiler/translator/tree_util/IntermTraverse.h"
  
  namespace sh
  {
  
  namespace
  {
  
  // An AST traverser that rewrites for and while loops by replacing "condition" with
  // "condition && true" to work around condition bug on Intel Mac.
  class AddAndTrueToLoopConditionTraverser : public TIntermTraverser
  {
    public:
      AddAndTrueToLoopConditionTraverser() : TIntermTraverser(true, false, false) {}
  
      bool visitLoop(Visit, TIntermLoop *loop) override
      {
          // do-while loop doesn't have this bug.
          if (loop->getType() != ELoopFor && loop->getType() != ELoopWhile)
          {
              return true;
          }
  
          // For loop may not have a condition.
          if (loop->getCondition() == nullptr)
          {
              return true;
          }
  
          // Constant true.
          TIntermTyped *trueValue = CreateBoolNode(true);
  
          // CONDITION && true.
          TIntermBinary *andOp = new TIntermBinary(EOpLogicalAnd, loop->getCondition(), trueValue);
          loop->setCondition(andOp);
  
          return true;
      }
  };
  
  }  // anonymous namespace
  
  bool AddAndTrueToLoopCondition(TCompiler *compiler, TIntermNode *root)
  {
      AddAndTrueToLoopConditionTraverser traverser;
      root->traverse(&traverser);
      return compiler->validateAST(root);
  }
  
  }  // namespace sh
  

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