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libsfml  1.6+dfsg2
PostFX.hpp
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00001 
00002 //
00003 // SFML - Simple and Fast Multimedia Library
00004 // Copyright (C) 2007-2009 Laurent Gomila (laurent.gom@gmail.com)
00005 //
00006 // This software is provided 'as-is', without any express or implied warranty.
00007 // In no event will the authors be held liable for any damages arising from the use of this software.
00008 //
00009 // Permission is granted to anyone to use this software for any purpose,
00010 // including commercial applications, and to alter it and redistribute it freely,
00011 // subject to the following restrictions:
00012 //
00013 // 1. The origin of this software must not be misrepresented;
00014 //    you must not claim that you wrote the original software.
00015 //    If you use this software in a product, an acknowledgment
00016 //    in the product documentation would be appreciated but is not required.
00017 //
00018 // 2. Altered source versions must be plainly marked as such,
00019 //    and must not be misrepresented as being the original software.
00020 //
00021 // 3. This notice may not be removed or altered from any source distribution.
00022 //
00024 
00025 #ifndef SFML_POSTFX_HPP
00026 #define SFML_POSTFX_HPP
00027 
00029 // Headers
00031 #include <SFML/Graphics/Drawable.hpp>
00032 #include <SFML/Graphics/Image.hpp>
00033 #include <istream>
00034 #include <map>
00035 #include <string>
00036 
00037 
00038 namespace sf
00039 {
00043 class SFML_API PostFX : public Drawable
00044 {
00045 public :
00046 
00051     PostFX();
00052 
00059     PostFX(const PostFX& Copy);
00060 
00065     ~PostFX();
00066 
00075     bool LoadFromFile(const std::string& Filename);
00076 
00085     bool LoadFromMemory(const std::string& Effect);
00086 
00094     void SetParameter(const std::string& Name, float X);
00095 
00103     void SetParameter(const std::string& Name, float X, float Y);
00104 
00112     void SetParameter(const std::string& Name, float X, float Y, float Z);
00113 
00121     void SetParameter(const std::string& Name, float X, float Y, float Z, float W);
00122 
00130     void SetTexture(const std::string& Name, Image* Texture);
00131 
00140     PostFX& operator =(const PostFX& Other);
00141 
00148     static bool CanUsePostFX();
00149 
00150 protected :
00151 
00156     virtual void Render(RenderTarget& Target) const;
00157 
00158 private :
00159 
00169     static std::string PreprocessEffect(std::istream& File);
00170 
00175     void CreateProgram();
00176 
00178     // Types
00180     typedef std::map<std::string, const Image*> TextureTable;
00181 
00183     // Member data
00185     unsigned int  myShaderProgram;  
00186     TextureTable  myTextures;       
00187     std::string   myFragmentShader; 
00188     mutable Image myFrameBuffer;    
00189 };
00190 
00191 } // namespace sf
00192 
00193 
00194 #endif // SFML_POSTFX_HPP