Shader.hpp
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_SHADER_HPP
00026 #define SFML_SHADER_HPP
00027 
00029 // Headers
00031 #include <SFML/Config.hpp>
00032 #include <SFML/Graphics/Texture.hpp>
00033 #include <SFML/Window/GlResource.hpp>
00034 #include <SFML/System/Vector2.hpp>
00035 #include <SFML/System/Vector3.hpp>
00036 #include <map>
00037 #include <string>
00038 
00039 
00040 namespace sf
00041 {
00042 class Renderer;
00043 
00048 class SFML_API Shader : GlResource
00049 {
00050 public :
00051 
00058     Shader();
00059 
00066     Shader(const Shader& copy);
00067 
00072     ~Shader();
00073 
00090     bool LoadFromFile(const std::string& filename);
00091 
00107     bool LoadFromMemory(const std::string& shader);
00108 
00124     bool LoadFromStream(InputStream& stream);
00125 
00144     void SetParameter(const std::string& name, float x);
00145 
00165     void SetParameter(const std::string& name, float x, float y);
00166 
00187     void SetParameter(const std::string& name, float x, float y, float z);
00188 
00210     void SetParameter(const std::string& name, float x, float y, float z, float w);
00211 
00230     void SetParameter(const std::string& name, const Vector2f& vector);
00231 
00250     void SetParameter(const std::string& name, const Vector3f& vector);
00251 
00278     void SetTexture(const std::string& name, const Texture& texture);
00279 
00299     void SetCurrentTexture(const std::string& name);
00300 
00317     void Bind() const;
00318 
00329     void Unbind() const;
00330 
00339     Shader& operator =(const Shader& right);
00340 
00351     static bool IsAvailable();
00352 
00353 private :
00354 
00355     friend class Renderer;
00356 
00363     bool CompileProgram();
00364 
00372     void BindTextures() const;
00373 
00382     void Use() const;
00383 
00385     // Types
00387     typedef std::map<int, const Texture*> TextureTable;
00388 
00390     // Member data
00392     unsigned int myShaderProgram;  
00393     int          myCurrentTexture; 
00394     TextureTable myTextures;       
00395     std::string  myFragmentShader; 
00396 };
00397 
00398 } // namespace sf
00399 
00400 
00401 #endif // SFML_SHADER_HPP
00402 
00403