# 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) 2000-2009 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     GpuConstTypeToStringMap     mGpuConstTypeMap;               // Map between GPU constant type to string value.
    00099     ParamSemanticToStringMap    mParamSemanticMap;              // Map between parameter semantic to string value.
    00100
    00101     StringMap                   mInputToGLStatesMap;            // Map parameter name to a new parameter name (sometime renaming is required to match names between vertex and fragment shader)
    00102     ParamContentToStringMap     mContentToPerVertexAttributes;  // Map parameter content to vertex attributes
    00103     int                         mGLSLVersion;                   // Holds the current glsl version
    00104     StringVector                mFragInputParams;               // Holds the fragment input params
    00105 };
    00106
    00110 class _OgreRTSSExport ShaderProgramWriterGLSLFactory : public ProgramWriterFactory
    00111 {
    00112 public:
    00113     ShaderProgramWriterGLSLFactory()
    00114     {
    00115         mLanguage = "glsl";
    00116     }
    00117     virtual ~ShaderProgramWriterGLSLFactory() {}
    00118
    00122     virtual const String& getTargetLanguage(void) const
    00123     {
    00124         return mLanguage;
    00125     }
    00126
    00130     virtual ProgramWriter* create(void)
    00131     {
    00132         return OGRE_NEW GLSLProgramWriter();
    00133     }
    00134
    00135 private:
    00136     String mLanguage;
    00137
    00138 };
    00139
    00143 }
    00144 }
    00145
    00146 #endif

Copyright © 2008 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Wed Nov 3 2010 19:24:52