FIFE  2008.0
renderbackendopengl.h
00001 /***************************************************************************
00002  *   Copyright (C) 2005-2008 by the FIFE team                              *
00003  *   http://www.fifengine.de                                               *
00004  *   This file is part of FIFE.                                            *
00005  *                                                                         *
00006  *   FIFE is free software; you can redistribute it and/or                 *
00007  *   modify it under the terms of the GNU Lesser General Public            *
00008  *   License as published by the Free Software Foundation; either          *
00009  *   version 2.1 of the License, or (at your option) any later version.    *
00010  *                                                                         *
00011  *   This library is distributed in the hope that it will be useful,       *
00012  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00013  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
00014  *   Lesser General Public License for more details.                       *
00015  *                                                                         *
00016  *   You should have received a copy of the GNU Lesser General Public      *
00017  *   License along with this library; if not, write to the                 *
00018  *   Free Software Foundation, Inc.,                                       *
00019  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
00020  ***************************************************************************/
00021 
00022 #ifndef FIFE_VIDEO_RENDERBACKENSD_OPENGL_RENDERBACKENDOPENGL_H
00023 #define FIFE_VIDEO_RENDERBACKENSD_OPENGL_RENDERBACKENDOPENGL_H
00024 
00025 // Standard C++ library includes
00026 
00027 // 3rd party library includes
00028 
00029 // FIFE includes
00030 // These includes are split up in two parts, separated by one empty line
00031 // First block: files included from the FIFE root src directory
00032 // Second block: files included from the same folder
00033 #include "video/renderbackend.h"
00034 
00035 namespace FIFE {
00036 
00037     class ScreenMode;
00038 
00042     class RenderBackendOpenGL : public RenderBackend {
00043     public:
00044         RenderBackendOpenGL(const SDL_Color& colorkey);
00045         virtual ~RenderBackendOpenGL();
00046         const std::string& getName() const;
00047         void startFrame();
00048         void endFrame();
00049         void init(const std::string& driver);
00050         void clearBackBuffer();
00051         void setLightingModel(unsigned int lighting);
00052         unsigned int getLightingModel() const;
00053         void enableLighting();
00054         void disableLighting();
00055         void setLighting(float red, float green, float blue, float alpha);
00056         void resetLighting();
00057         void enableStencilTest();
00058         void disableStencilTest();
00059         void setStencilTest(uint8_t stencil_ref, unsigned int stencil_op, unsigned int stencil_func);
00060         void resetStencilBuffer(uint8_t buffer);
00061         uint8_t getStencilRef() const;
00062         void enableAlphaTest();
00063         void disableAlphaTest();
00064         void setAlphaTest(float ref_alpha);
00065         void changeBlending(int scr, int dst);
00066 
00067         Image* createMainScreen(const ScreenMode& mode, const std::string& title, const std::string& icon);
00068         Image*  setScreenMode(const ScreenMode& mode);
00069         Image* createImage(const uint8_t* data, unsigned int width, unsigned int height);
00070         Image* createImage(SDL_Surface* surface);
00071         bool putPixel(int x, int y, int r, int g, int b, int a = 255);
00072         void drawLine(const Point& p1, const Point& p2, int r, int g, int b, int a = 255);
00073         void drawTriangle(const Point& p1, const Point& p2, const Point& p3, int r, int g, int b, int a = 255);
00074         void drawRectangle(const Point& p, uint16_t w, uint16_t h, uint8_t r, uint8_t g, uint8_t b, uint8_t a = 255);
00075         void fillRectangle(const Point& p, uint16_t w, uint16_t h, uint8_t r, uint8_t g, uint8_t b, uint8_t a = 255);
00076         void drawQuad(const Point& p1, const Point& p2, const Point& p3, const Point& p4,  int r, int g, int b, int a = 255);
00077         void drawVertex(const Point& p, const uint8_t size, int r, int g, int b, int a = 255);
00078         void drawLightPrimitive(const Point& p, uint8_t intensity, float radius, int subdivisions, float xstretch, float ystretch, uint8_t red, uint8_t green, uint8_t blue);
00079 
00080     private:
00081         SDL_PixelFormat m_rgba_format;
00082 
00083         unsigned int m_lightmodel;
00084         float m_lred;
00085         float m_lgreen;
00086         float m_lblue;
00087         float m_lalpha;
00088         bool m_light_enabled;
00089         bool m_stencil_enabled;
00090         bool m_alpha_enabled;
00091         uint8_t m_sten_ref;
00092         GLint m_sten_buf;
00093         unsigned int m_sten_op;
00094         unsigned int m_sten_func;
00095         GLenum m_blend_src;
00096         GLenum m_blend_dst;
00097     };
00098 
00099 }
00100 
00101 #endif
00102 /* vim: set noexpandtab: set shiftwidth=2: set tabstop=2: */