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annotate engine/core/video/renderbackend.h @ 639:685d250f2c2d

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* Improvements for DeviceCaps. It now stores a list of valid SDL drivers. Currently in windows we are limited to the windows GDI (which is slow). This could mean that SDL users could benifit from hardware acceleration with directx (a valid SDL driver).
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Thu, 07 Oct 2010 16:44:44 +0000
parents 3094988564d5
children 855ad500f991
rev   line source
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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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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 */
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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
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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);
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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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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