PostFX.hpp

00001 
00002 //
00003 // SFML - Simple and Fast Multimedia Library
00004 // Copyright (C) 2007 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 <SFML/Graphics/VideoResource.hpp>
00034 #include <map>
00035 #include <string>
00036 
00037 
00038 namespace sf
00039 {
00043 class SFML_API PostFX : public Drawable, public VideoResource
00044 {
00045 public :
00046 
00051     PostFX();
00052 
00059     PostFX(const std::string& Filename);
00060 
00067     PostFX(const PostFX& Copy);
00068 
00073     ~PostFX();
00074 
00083     bool LoadFromFile(const std::string& Filename);
00084 
00092     void SetParameter(const std::string& Name, float X);
00093 
00101     void SetParameter(const std::string& Name, float X, float Y);
00102 
00110     void SetParameter(const std::string& Name, float X, float Y, float Z);
00111 
00119     void SetParameter(const std::string& Name, float X, float Y, float Z, float W);
00120 
00128     void SetTexture(const std::string& Name, Image* Texture);
00129 
00138     PostFX& operator =(const PostFX& Other);
00139 
00146     static bool CanUsePostFX();
00147 
00148 protected :
00149 
00154     virtual void Render(RenderWindow& Window);
00155 
00156 private :
00157 
00167     static std::string PreprocessEffect(const std::string& Filename);
00168 
00178     bool CreateAndAttachShader(const std::string& Source, unsigned int ShaderType);
00179 
00184     void CreateProgram();
00185 
00190     virtual void DestroyVideoResources();
00191 
00193     // Member data
00195     unsigned int                  myShaderProgram;  
00196     std::map<std::string, Image*> mySamplers;       
00197     std::string                   myFragmentShader; 
00198     Image                         myFrameBuffer;    
00199 };
00200 
00201 } // namespace sf
00202 
00203 
00204 #endif // SFML_POSTFX_HPP