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annotate engine/core/video/renderbackend.h @ 635:3094988564d5

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* Added a simple method to query the default video card capabilities. This is still a work in progress. You can now get a list of ScreenModes the device supports. ScreenMode includes information on the screen resolution, if the mode is fullscreen/windowed and if it would use the OpenGL or SDL renderer.
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Wed, 06 Oct 2010 19:19:08 +0000
parents 5f381fa34769
children 855ad500f991
rev   line source
0
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1 /***************************************************************************
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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6 * FIFE is free software; you can redistribute it and/or *
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
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9 * version 2.1 of the License, or (at your option) any later version. *
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10 * *
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11 * This library is distributed in the hope that it will be useful, *
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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14 * Lesser General Public License for more details. *
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15 * *
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16 * You should have received a copy of the GNU Lesser General Public *
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17 * License along with this library; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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21
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22 #ifndef FIFE_VIDEO_RENDERBACKEND_H
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23 #define FIFE_VIDEO_RENDERBACKEND_H
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24
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25 // Standard C++ library includes
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26 #include <string>
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27
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28 // Platform specific includes
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29 #include "util/base/fife_stdint.h"
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30
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31 // 3rd party library includes
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32 #include <SDL.h>
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33 #include <SDL_video.h>
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34
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35 // FIFE includes
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36 // These includes are split up in two parts, separated by one empty line
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37 // First block: files included from the FIFE root src directory
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38 // Second block: files included from the same folder
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39 #include "util/base/singleton.h"
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40 #include "util/structures/point.h"
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41 #include "util/structures/rect.h"
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42
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43 #include "image.h"
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44
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45 namespace FIFE {
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46
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47 class Image;
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3094988564d5 * Added a simple method to query the default video card capabilities. This is still a work in progress. You can now get a list of ScreenModes the device supports. ScreenMode includes information on the screen resolution, if the mode is fullscreen/windowed and if it would use the OpenGL or SDL renderer.
prock@33b003aa-7bff-0310-803a-e67f0ece8222
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48 class ScreenMode;
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49
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50 /** Abstract interface for all the renderbackends. */
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51 class RenderBackend: public AbstractImage, public DynamicSingleton<RenderBackend> {
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52 public:
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53 /** Constructor.
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54 * @param name The name of the new renderbackend.
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55 */
425
ad7969d9460b A client can now specify a global color key to be used with all images. The default color key is (255,0,255) in RGB format. Also the client can enable/disable the color key feature by using the setColorKeyEnabled function in the EngineSettings class. By default the color key feature is disabled. fixes[t:451]
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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56 RenderBackend(const SDL_Color& colorkey);
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57
0
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58 /** Destructor.
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59 */
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60 virtual ~RenderBackend();
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61
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62 /** The name of the renderbackend.
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63 * @return The name of this renderbackend.
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64 */
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65 virtual const std::string& getName() const = 0;
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66
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67 /** Called when a new frame starts.
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68 */
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69 virtual void startFrame() = 0;
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70
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71 /** Called when a frame is finished and ready to be displayed.
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72 */
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73 virtual void endFrame() = 0;
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74
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75 /** Initializes the backend.
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76 */
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77 virtual void init() = 0;
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78
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79 /** Forces a clear of the backbuffer
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80 */
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81 virtual void clearBackBuffer() = 0;
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82
0
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83 /** Performs cleanup actions.
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84 */
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85 virtual void deinit();
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86
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87 /** Creates the mainscreen (the display window).
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88 * @param width Width of the window.
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89 * @param height Height of the window.
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90 * @param bitsPerPixel Bits per pixel, 0 means autodetect.
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91 * @param fullscreen Use fullscreen mode?
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92 * @return The new Screen Image
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93 */
61
18c2a21ac0ad allow clients to set a custom window title and icon
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94 virtual Image* createMainScreen(unsigned int width, unsigned int height, unsigned char bitsPerPixel, bool fullscreen, const std::string& title, const std::string& icon) = 0;
0
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95
635
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96 Image* createMainScreen(const ScreenMode& mode, const std::string& title, const std::string& icon);
3094988564d5 * Added a simple method to query the default video card capabilities. This is still a work in progress. You can now get a list of ScreenModes the device supports. ScreenMode includes information on the screen resolution, if the mode is fullscreen/windowed and if it would use the OpenGL or SDL renderer.
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97
0
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98 /** Creates an Image suitable for this renderbackend.
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99 * @param data Pointer to the imagedata (needs to be in RGBA, 8 bits per channel).
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100 * @param width Width of the image.
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101 * @param height Height of the image.
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102 * @return The new Image.
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103 */
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104 virtual Image* createImage(const uint8_t* data, unsigned int width, unsigned int height) = 0;
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105
0
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106 /** Helper function to create images from SDL_Surfaces.
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107 * Takes ownership over the surface.
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108 * @param surface The surface to convert.
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109 * @return The new Image.
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110 */
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111 virtual Image* createImage(SDL_Surface* surface) = 0;
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b2feacaed53c * Added the colorbuffer patch with a small change due to SDL. Performance boost between 20-30% under OpenGL.
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112
0
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113 /** Returns a pointer to the main screen Image
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114 * @return A pointer to the main screen Image, or 0 if no mainscreen exists.
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115 */
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116 Image* getScreenImage() const { return m_screen; };
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117
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118 /** Creates a Screenshot and saves it to a file.
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119 */
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120 void captureScreen(const std::string& filename);
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121
0
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122 SDL_Surface* getSurface();
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123 unsigned int getWidth() const;
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124 unsigned int getHeight() const;
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125 unsigned int getScreenWidth() const { return getWidth(); }
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126 unsigned int getScreenHeight() const { return getHeight(); }
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127 const Rect& getArea();
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128 void getPixelRGBA(int x, int y, uint8_t* r, uint8_t* g, uint8_t* b, uint8_t* a);
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129 void pushClipArea(const Rect& cliparea, bool clear=true);
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130 void popClipArea();
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131 const Rect& getClipArea() const;
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132 void setAlphaOptimizerEnabled(bool enabled);
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133 bool isAlphaOptimizerEnabled();
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134 void saveImage(const std::string& filename);
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135
425
ad7969d9460b A client can now specify a global color key to be used with all images. The default color key is (255,0,255) in RGB format. Also the client can enable/disable the color key feature by using the setColorKeyEnabled function in the EngineSettings class. By default the color key feature is disabled. fixes[t:451]
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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136 /** Sets whether to use the colorkey feature
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vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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137 */
ad7969d9460b A client can now specify a global color key to be used with all images. The default color key is (255,0,255) in RGB format. Also the client can enable/disable the color key feature by using the setColorKeyEnabled function in the EngineSettings class. By default the color key feature is disabled. fixes[t:451]
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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138 void setColorKeyEnabled(bool colorkeyenable);
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139
ad7969d9460b A client can now specify a global color key to be used with all images. The default color key is (255,0,255) in RGB format. Also the client can enable/disable the color key feature by using the setColorKeyEnabled function in the EngineSettings class. By default the color key feature is disabled. fixes[t:451]
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140 /** Gets whether the colorkey feature is in use
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vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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141 */
ad7969d9460b A client can now specify a global color key to be used with all images. The default color key is (255,0,255) in RGB format. Also the client can enable/disable the color key feature by using the setColorKeyEnabled function in the EngineSettings class. By default the color key feature is disabled. fixes[t:451]
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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142 bool isColorKeyEnabled() const;
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143
ad7969d9460b A client can now specify a global color key to be used with all images. The default color key is (255,0,255) in RGB format. Also the client can enable/disable the color key feature by using the setColorKeyEnabled function in the EngineSettings class. By default the color key feature is disabled. fixes[t:451]
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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144 /** Sets the global colorkey to use for images
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145 */
425
ad7969d9460b A client can now specify a global color key to be used with all images. The default color key is (255,0,255) in RGB format. Also the client can enable/disable the color key feature by using the setColorKeyEnabled function in the EngineSettings class. By default the color key feature is disabled. fixes[t:451]
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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146 void setColorKey(const SDL_Color& colorkey);
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147
ad7969d9460b A client can now specify a global color key to be used with all images. The default color key is (255,0,255) in RGB format. Also the client can enable/disable the color key feature by using the setColorKeyEnabled function in the EngineSettings class. By default the color key feature is disabled. fixes[t:451]
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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148 /** Gets the global colorkey setting
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149 */
425
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vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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150 const SDL_Color& getColorKey() const;
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151
634
5f381fa34769 * Added the clearBackBuffer() function to the renderbackends.
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152 /** Sets if the backbuffer should be cleared before rendering the next frame.
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153 * @param clear true = clear screen before next frame, false = do not clear screen
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154 */
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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155 void setClearBackBuffer(bool clear) { m_clear = clear; };
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156
0
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157 protected:
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158 Image* m_screen;
633
46b95d06c8c2 * Renamed RenderBackend::isClearNeeded() to RenderBackend::setClearScreen(). It is no longer pure virtual. Also documented it's functionality.
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159 bool m_clear;
0
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160 bool m_isalphaoptimized;
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161 unsigned int m_chunkingsize;
425
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vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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162 bool m_iscolorkeyenabled;
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vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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163 SDL_Color m_colorkey;
0
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164 };
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165 }
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166
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167 #endif