1//
2// Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved.
3// Use of this source code is governed by a BSD-style license that can be
4// found in the LICENSE file.
5//
6
7#ifndef COMPILER_TRANSLATOR_OUTPUTGLSLBASE_H_
8#define COMPILER_TRANSLATOR_OUTPUTGLSLBASE_H_
9
10#include <set>
11
12#include "compiler/translator/IntermNode.h"
13#include "compiler/translator/LoopInfo.h"
14#include "compiler/translator/ParseContext.h"
15
16class TOutputGLSLBase : public TIntermTraverser
17{
18 public:
19 TOutputGLSLBase(TInfoSinkBase &objSink,
20 ShArrayIndexClampingStrategy clampingStrategy,
21 ShHashFunction64 hashFunction,
22 NameMap &nameMap,
23 TSymbolTable& symbolTable,
24 int shaderVersion,
25 ShShaderOutput output);
26
27 ShShaderOutput getShaderOutput() const
28 {
29 return mOutput;
30 }
31
32 protected:
33 TInfoSinkBase &objSink() { return mObjSink; }
34 void writeTriplet(Visit visit, const char *preStr, const char *inStr, const char *postStr);
35 void writeVariableType(const TType &type);
36 virtual bool writeVariablePrecision(TPrecision precision) = 0;
37 void writeFunctionParameters(const TIntermSequence &args);
38 const TConstantUnion *writeConstantUnion(const TType &type, const TConstantUnion *pConstUnion);
39 void writeConstructorTriplet(Visit visit, const TType &type, const char *constructorBaseType);
40 TString getTypeName(const TType &type);
41
42 virtual void visitSymbol(TIntermSymbol *node);
43 virtual void visitConstantUnion(TIntermConstantUnion *node);
44 virtual bool visitBinary(Visit visit, TIntermBinary *node);
45 virtual bool visitUnary(Visit visit, TIntermUnary *node);
46 virtual bool visitSelection(Visit visit, TIntermSelection *node);
47 virtual bool visitSwitch(Visit visit, TIntermSwitch *node);
48 virtual bool visitCase(Visit visit, TIntermCase *node);
49 virtual bool visitAggregate(Visit visit, TIntermAggregate *node);
50 virtual bool visitLoop(Visit visit, TIntermLoop *node);
51 virtual bool visitBranch(Visit visit, TIntermBranch *node);
52
53 void visitCodeBlock(TIntermNode *node);
54
55 // Return the original name if hash function pointer is NULL;
56 // otherwise return the hashed name.
57 TString hashName(const TString &name);
58 // Same as hashName(), but without hashing built-in variables.
59 TString hashVariableName(const TString &name);
60 // Same as hashName(), but without hashing built-in functions.
61 TString hashFunctionName(const TString &mangled_name);
62 // Used to translate function names for differences between ESSL and GLSL
63 virtual TString translateTextureFunction(TString &name) { return name; }
64
65 private:
66 bool structDeclared(const TStructure *structure) const;
67 void declareStruct(const TStructure *structure);
68
69 void writeBuiltInFunctionTriplet(Visit visit, const char *preStr, bool useEmulatedFunction);
70
71 TInfoSinkBase &mObjSink;
72 bool mDeclaringVariables;
73
74 // This set contains all the ids of the structs from every scope.
75 std::set<int> mDeclaredStructs;
76
77 // Stack of loops that need to be unrolled.
78 TLoopStack mLoopUnrollStack;
79
80 ShArrayIndexClampingStrategy mClampingStrategy;
81
82 // name hashing.
83 ShHashFunction64 mHashFunction;
84
85 NameMap &mNameMap;
86
87 TSymbolTable &mSymbolTable;
88
89 const int mShaderVersion;
90
91 ShShaderOutput mOutput;
92};
93
94#endif // COMPILER_TRANSLATOR_OUTPUTGLSLBASE_H_
95