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

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• Hash : 183bde55
  Author :
  Date : 2014-07-02T15:31:19
  

  Return shader variable information using GLenum values.
  
  Instead of duplicating GL header define values, explictly return
  GLenum for variable queries in the shader inspection API. This
  reduces the duplicate defines in the shader compiler header.
  
  BUG=angle:466
  
  Change-Id: Iddaaff597b188251fa2e546f352bf77ab3ac43bc
  Reviewed-on: https://chromium-review.googlesource.com/205860
  Tested-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Zhenyao Mo <zmo@chromium.org>
  Reviewed-by: Nicolas Capens <capn@chromium.org>
  

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• src/compiler/translator/ValidateLimitations.h

• //
  // Copyright (c) 2010 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/intermediate.h"
  #include "compiler/translator/LoopInfo.h"
  
  class TInfoSinkBase;
  
  // Traverses intermediate tree to ensure that the shader does not exceed the
  // minimum functionality mandated in GLSL 1.0 spec, Appendix A.
  class ValidateLimitations : public TIntermTraverser
  {
    public:
      ValidateLimitations(sh::GLenum shaderType, TInfoSinkBase &sink);
  
      int numErrors() const { return mNumErrors; }
  
      virtual bool visitBinary(Visit, TIntermBinary *);
      virtual bool visitUnary(Visit, TIntermUnary *);
      virtual bool visitAggregate(Visit, TIntermAggregate *);
      virtual bool visitLoop(Visit, TIntermLoop *);
  
    private:
      void error(TSourceLoc loc, const char *reason, const char *token);
  
      bool withinLoopBody() const;
      bool isLoopIndex(TIntermSymbol *symbol);
      bool validateLoopType(TIntermLoop *node);
  
      bool validateForLoopHeader(TIntermLoop *node);
      // If valid, return the index symbol id; Otherwise, return -1.
      int validateForLoopInit(TIntermLoop *node);
      bool validateForLoopCond(TIntermLoop *node, int indexSymbolId);
      bool validateForLoopExpr(TIntermLoop *node, int indexSymbolId);
  
      // Returns true if none of the loop indices is used as the argument to
      // the given function out or inout parameter.
      bool validateFunctionCall(TIntermAggregate *node);
      bool validateOperation(TIntermOperator *node, TIntermNode *operand);
  
      // Returns true if indexing does not exceed the minimum functionality
      // mandated in GLSL 1.0 spec, Appendix A, Section 5.
      bool isConstExpr(TIntermNode *node);
      bool isConstIndexExpr(TIntermNode *node);
      bool validateIndexing(TIntermBinary *node);
  
      sh::GLenum mShaderType;
      TInfoSinkBase &mSink;
      int mNumErrors;
      TLoopStack mLoopStack;
  };
  
  

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