OgreShaderGLSLESProgramWriter.h
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1 /*
2 -----------------------------------------------------------------------------
3 This source file is part of OGRE
4 (Object-oriented Graphics Rendering Engine)
5 For the latest info, see http://www.ogre3d.org
6 
7 Copyright (c) 2000-2013 Torus Knot Software Ltd
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9 of this software and associated documentation files (the "Software"), to deal
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27 #ifndef _ShaderProgramWriterGLSLES_
28 #define _ShaderProgramWriterGLSLES_
29 
31 
32 namespace Ogre {
33 namespace RTShader {
34 
46 {
47  // Interface.
48 public:
49 
53 
55  virtual ~GLSLESProgramWriter ();
56 
57 
61  virtual void writeSourceCode (std::ostream& os, Program* program);
62 
66  virtual const String& getTargetLanguage () const { return TargetLanguage; }
67 
69 
70  protected:
77  typedef FunctionMap::const_iterator FunctionMapIterator;
78  typedef FunctionVector::const_iterator FunctionVectorIterator;
79  typedef GpuConstTypeToStringMap::const_iterator GpuConstTypeToStringMapIterator;
80 
81  // Protected methods.
82 protected:
83 
85  void initializeStringMaps ();
86 
88  virtual void cacheDependencyFunctions(const String & libName);
89 
90 
93 
95  void writeProgramDependencies (std::ostream& os, Program* program);
96 
98  void writeLocalParameter (std::ostream& os, ParameterPtr parameter);
99 
101  void writeInputParameters (std::ostream& os, Function* function, GpuProgramType gpuType);
102 
104  void writeOutParameters (std::ostream& os, Function* function, GpuProgramType gpuType);
105 
107 
109  bool isBasicType(String &type);
110 
112  void discoverFunctionDependencies(const FunctionInvocation &invoc, FunctionVector &depVector);
113 
114  // Attributes.
115 protected:
116  GpuConstTypeToStringMap mGpuConstTypeMap; // Map between GPU constant type to string value.
117  ParamSemanticToStringMap mParamSemanticMap; // Map between parameter semantic to string value.
118 
119  StringMap mInputToGLStatesMap; // Map parameter name to a new parameter name (sometimes renaming is required to match names between vertex and fragment shader)
120  FunctionMap mFunctionCacheMap; // Map function invocation to body. Used as a cache to reduce library file reads and for inlining
121  StringMap mDefinesMap; // Map of #defines and the function library that contains them
122  ParamContentToStringMap mContentToPerVertexAttributes; // Map parameter content to vertex attributes
123  int mGLSLVersion; // Holds the current glsl es version
124  StringVector mFragInputParams; // Holds the fragment input params
125  StringMap mCachedFunctionLibraries; // Holds the cached function libraries
126 };
127 
132 {
133 public:
135  {
136  mLanguage = "glsles";
137  }
139 
143  virtual const String& getTargetLanguage(void) const
144  {
145  return mLanguage;
146  }
147 
151  virtual ProgramWriter* create(void)
152  {
153  return OGRE_NEW GLSLESProgramWriter();
154  }
155 
156 private:
158 };
159 
163 }
164 }
165 
166 #endif

Copyright © 2012 Torus Knot Software Ltd
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This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Wed Oct 16 2013 14:35:45