OgreShaderGLSLProgramWriter.h
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    00001 /*
    00002 -----------------------------------------------------------------------------
    00003 This source file is part of OGRE
    00004 (Object-oriented Graphics Rendering Engine)
    00005 For the latest info, see http://www.ogre3d.org
    00006
    00007 Copyright (c) 2000-2012 Torus Knot Software Ltd
    00008 Permission is hereby granted, free of charge, to any person obtaining a copy
    00009 of this software and associated documentation files (the "Software"), to deal
    00010 in the Software without restriction, including without limitation the rights
    00011 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    00012 copies of the Software, and to permit persons to whom the Software is
    00013 furnished to do so, subject to the following conditions:
    00014
    00015 The above copyright notice and this permission notice shall be included in
    00016 all copies or substantial portions of the Software.
    00017
    00018 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    00019 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00020 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    00021 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00022 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    00023 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    00024 THE SOFTWARE.
    00025 -----------------------------------------------------------------------------
    00026 */
    00027 #ifndef _ShaderProgramWriterGLSL_
    00028 #define _ShaderProgramWriterGLSL_
    00029
    00030 #include "OgreShaderProgramWriterManager.h"
    00031
    00032 namespace Ogre {
    00033 namespace RTShader {
    00034
    00045 class _OgreRTSSExport GLSLProgramWriter : public ProgramWriter
    00046 {
    00047     // Interface.
    00048 public:
    00049
    00053     GLSLProgramWriter();
    00054
    00056     virtual ~GLSLProgramWriter();
    00057
    00058
    00062     virtual void writeSourceCode(std::ostream& os, Program* program);
    00063
    00067     virtual const String& getTargetLanguage() const { return TargetLanguage; }
    00068
    00069     static String TargetLanguage;
    00070
    00071
    00072     // Protected methods.
    00073 protected:
    00074
    00076     void initializeStringMaps();
    00077
    00079     void writeLocalParameter(std::ostream& os, ParameterPtr parameter);
    00080
    00082     void writeForwardDeclarations(std::ostream& os, Program* program);
    00083
    00085     void writeInputParameters(std::ostream& os, Function* function, GpuProgramType gpuType);
    00086
    00088     void writeOutParameters(std::ostream& os, Function* function, GpuProgramType gpuType);
    00089
    00090 protected:
    00091     typedef std::map<GpuConstantType, const char*>      GpuConstTypeToStringMap;
    00092     typedef std::map<Parameter::Semantic, const char*>  ParamSemanticToStringMap;
    00093     typedef std::map<Parameter::Content, const char*>   ParamContentToStringMap;
    00094     typedef std::map<String, String>                    StringMap;
    00095
    00096     // Attributes.
    00097 protected:
    00098     // Map between GPU constant type to string value.
    00099     GpuConstTypeToStringMap mGpuConstTypeMap;
    00100     // Map between parameter semantic to string value.
    00101     ParamSemanticToStringMap mParamSemanticMap;
    00102
    00103     // Map parameter name to a new parameter name (sometime renaming is required to match names between vertex and fragment shader)
    00104     StringMap mInputToGLStatesMap;
    00105     // Map parameter content to vertex attributes
    00106     ParamContentToStringMap mContentToPerVertexAttributes;
    00107     // Holds the current glsl version
    00108     int mGLSLVersion;
    00109     // Holds the fragment input params
    00110     StringVector mFragInputParams;
    00111 };
    00112
    00116 class _OgreRTSSExport ShaderProgramWriterGLSLFactory : public ProgramWriterFactory
    00117 {
    00118 public:
    00119     ShaderProgramWriterGLSLFactory()
    00120     {
    00121         mLanguage = "glsl";
    00122     }
    00123     virtual ~ShaderProgramWriterGLSLFactory() {}
    00124
    00128     virtual const String& getTargetLanguage(void) const
    00129     {
    00130         return mLanguage;
    00131     }
    00132
    00136     virtual ProgramWriter* create(void)
    00137     {
    00138         return OGRE_NEW GLSLProgramWriter();
    00139     }
    00140
    00141 private:
    00142     String mLanguage;
    00143
    00144 };
    00145
    00149 }
    00150 }
    00151
    00152 #endif

Copyright © 2012 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Sun Sep 2 2012 07:27:23