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annotate src/video/directfb/SDL_DirectFB_opengl.c @ 5284:96a22141cf86 tip

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Changed output directory of Universal libSDL.a for iOS to respect build configurations. Template generator was updated to reflect these changes as well.
author Eric Wing <ewing . public |-at-| gmail . com>
date Sat, 12 Feb 2011 21:52:30 -0800
parents b530ef003506
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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b530ef003506 Happy 2011! :)
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3 Copyright (C) 1997-2011 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21
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22 SDL1.3 DirectFB driver by couriersud@arcor.de
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23
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24 */
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25
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26 #include "SDL_DirectFB_video.h"
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27
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28 #if SDL_DIRECTFB_OPENGL
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29 #include "SDL_DirectFB_opengl.h"
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30 #include "SDL_DirectFB_window.h"
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31
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32 #include <directfbgl.h>
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33 #include "SDL_loadso.h"
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34 #endif
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35
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36 #if SDL_DIRECTFB_OPENGL
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37
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38 struct SDL_GLDriverData
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39 {
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40 int gl_active; /* to stop switching drivers while we have a valid context */
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41 int initialized;
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42 DirectFB_GLContext *firstgl; /* linked list */
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43
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44 /* OpenGL */
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45 void (*glFinish) (void);
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46 void (*glFlush) (void);
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47 };
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48
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49 #define OPENGL_REQUIRS_DLOPEN
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50 #if defined(OPENGL_REQUIRS_DLOPEN) && defined(SDL_LOADSO_DLOPEN)
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51 #include <dlfcn.h>
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52 #define GL_LoadObject(X) dlopen(X, (RTLD_NOW|RTLD_GLOBAL))
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53 #define GL_LoadFunction dlsym
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54 #define GL_UnloadObject dlclose
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55 #else
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56 #define GL_LoadObject SDL_LoadObject
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57 #define GL_LoadFunction SDL_LoadFunction
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58 #define GL_UnloadObject SDL_UnloadObject
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59 #endif
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60
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61 static void DirectFB_GL_UnloadLibrary(_THIS);
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62
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63 int
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64 DirectFB_GL_Initialize(_THIS)
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65 {
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66 if (_this->gl_data) {
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67 return 0;
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68 }
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69
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70 _this->gl_data =
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71 (struct SDL_GLDriverData *) SDL_calloc(1,
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72 sizeof(struct
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73 SDL_GLDriverData));
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74 if (!_this->gl_data) {
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75 SDL_OutOfMemory();
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76 return -1;
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77 }
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78 _this->gl_data->initialized = 0;
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79
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80 ++_this->gl_data->initialized;
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81 _this->gl_data->firstgl = NULL;
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82
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83 if (DirectFB_GL_LoadLibrary(_this, NULL) < 0) {
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84 return -1;
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85 }
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86
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87 /* Initialize extensions */
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88 /* FIXME needed?
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89 * X11_GL_InitExtensions(_this);
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90 */
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91
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92 return 0;
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93 }
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94
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95 void
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96 DirectFB_GL_Shutdown(_THIS)
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97 {
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98 if (!_this->gl_data || (--_this->gl_data->initialized > 0)) {
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99 return;
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100 }
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101
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102 DirectFB_GL_UnloadLibrary(_this);
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103
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104 SDL_free(_this->gl_data);
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105 _this->gl_data = NULL;
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106 }
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107
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108 int
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109 DirectFB_GL_LoadLibrary(_THIS, const char *path)
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110 {
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111 //SDL_DFB_DEVICEDATA(_this);
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112
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113 void *handle = NULL;
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114
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115 SDL_DFB_DEBUG("Loadlibrary : %s\n", path);
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116
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117 if (_this->gl_data->gl_active) {
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118 SDL_SetError("OpenGL context already created");
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119 return -1;
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120 }
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121
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122
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123 if (path == NULL) {
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124 path = SDL_getenv("SDL_VIDEO_GL_DRIVER");
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125 if (path == NULL) {
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126 path = "libGL.so";
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127 }
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128 }
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129
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130 handle = GL_LoadObject(path);
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131 if (handle == NULL) {
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132 SDL_DFB_ERR("Library not found: %s\n", path);
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133 /* SDL_LoadObject() will call SDL_SetError() for us. */
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134 return -1;
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135 }
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136
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137 SDL_DFB_DEBUG("Loaded library: %s\n", path);
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138
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139 _this->gl_config.dll_handle = handle;
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140 _this->gl_config.driver_loaded = 1;
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parents:
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141 if (path) {
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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142 SDL_strlcpy(_this->gl_config.driver_path, path,
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143 SDL_arraysize(_this->gl_config.driver_path));
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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144 } else {
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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145 *_this->gl_config.driver_path = '\0';
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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146 }
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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147
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148 _this->gl_data->glFinish = DirectFB_GL_GetProcAddress(_this, "glFinish");
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149 _this->gl_data->glFlush = DirectFB_GL_GetProcAddress(_this, "glFlush");
2737
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150
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151 return 0;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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152 }
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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153
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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154 static void
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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155 DirectFB_GL_UnloadLibrary(_THIS)
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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156 {
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157 #if 0
2737
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158 int ret;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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159
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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160 if (_this->gl_config.driver_loaded) {
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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161
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162 ret = GL_UnloadObject(_this->gl_config.dll_handle);
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163 if (ret)
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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164 SDL_DFB_ERR("Error #%d trying to unload library.\n", ret);
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165 _this->gl_config.dll_handle = NULL;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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166 _this->gl_config.driver_loaded = 0;
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167 }
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168 #endif
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169 /* Free OpenGL memory */
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170 SDL_free(_this->gl_data);
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171 _this->gl_data = NULL;
2737
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172 }
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173
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Sam Lantinga <slouken@libsdl.org>
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174 void *
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175 DirectFB_GL_GetProcAddress(_THIS, const char *proc)
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176 {
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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177 void *handle;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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178
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179 handle = _this->gl_config.dll_handle;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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180 return GL_LoadFunction(handle, proc);
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181 }
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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182
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183 SDL_GLContext
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184 DirectFB_GL_CreateContext(_THIS, SDL_Window * window)
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185 {
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186 //SDL_DFB_DEVICEDATA(_this);
2737
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187 SDL_DFB_WINDOWDATA(window);
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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188 DirectFB_GLContext *context;
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189
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190 SDL_DFB_ALLOC_CLEAR(context, sizeof(DirectFB_GLContext));
2737
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191
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192 SDL_DFB_CHECKERR(windata->surface->GetGL(windata->surface,
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diff changeset
193 &context->context));
2998
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194
d364ee9b9c15 Date: Sun, 04 Jan 2009 20:53:30 +0100
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195 if (!context->context)
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196 return NULL;
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197
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198 context->is_locked = 0;
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199 context->sdl_window = window;
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200
2737
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201 context->next = _this->gl_data->firstgl;
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202 _this->gl_data->firstgl = context;
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203
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204 SDL_DFB_CHECK(context->context->Unlock(context->context));
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205
2737
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206 if (DirectFB_GL_MakeCurrent(_this, window, context) < 0) {
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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207 DirectFB_GL_DeleteContext(_this, context);
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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diff changeset
208 return NULL;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
209 }
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
210
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
211 return context;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
212
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
213 error:
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
214 return NULL;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215 }
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
216
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
217 int
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
218 DirectFB_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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diff changeset
219 {
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220 //SDL_DFB_WINDOWDATA(window);
2737
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diff changeset
221 DirectFB_GLContext *ctx = (DirectFB_GLContext *) context;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
222 DirectFB_GLContext *p;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
223
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
224 for (p = _this->gl_data->firstgl; p; p = p->next)
4636
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225 {
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diff changeset
226 if (p->is_locked) {
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diff changeset
227 SDL_DFB_CHECKERR(p->context->Unlock(p->context));
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228 p->is_locked = 0;
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diff changeset
229 }
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diff changeset
230
2737
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
231 }
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
233 if (ctx != NULL) {
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
234 SDL_DFB_CHECKERR(ctx->context->Lock(ctx->context));
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diff changeset
235 ctx->is_locked = 1;
2737
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
236 }
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238 return 0;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 error:
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
240 return -1;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241 }
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 int
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
244 DirectFB_GL_SetSwapInterval(_THIS, int interval)
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 {
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246 SDL_Unsupported();
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247 return -1;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 }
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
250 int
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251 DirectFB_GL_GetSwapInterval(_THIS)
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252 {
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253 SDL_Unsupported();
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
254 return -1;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
255 }
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
256
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
257 void
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
258 DirectFB_GL_SwapWindow(_THIS, SDL_Window * window)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
259 {
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diff changeset
260 //SDL_DFB_DEVICEDATA(_this);
2737
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diff changeset
261 SDL_DFB_WINDOWDATA(window);
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
262 DFBRegion region;
4636
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diff changeset
263 DirectFB_GLContext *p;
2737
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
264
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
265 region.x1 = 0;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 region.y1 = 0;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
267 region.x2 = window->w;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
268 region.y2 = window->h;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
269
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diff changeset
270 #if 0
2737
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
271 if (devdata->glFinish)
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
272 devdata->glFinish();
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
273 else if (devdata->glFlush)
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
274 devdata->glFlush();
4636
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diff changeset
275 #endif
2737
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parents:
diff changeset
276
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diff changeset
277 for (p = _this->gl_data->firstgl; p != NULL; p = p->next)
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diff changeset
278 if (p->sdl_window == window && p->is_locked)
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diff changeset
279 {
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diff changeset
280 SDL_DFB_CHECKERR(p->context->Unlock(p->context));
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diff changeset
281 p->is_locked = 0;
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diff changeset
282 }
2737
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
283
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284 SDL_DFB_CHECKERR(windata->window_surface->Flip(windata->window_surface,NULL, DSFLIP_PIPELINE |DSFLIP_BLIT | DSFLIP_ONSYNC ));
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285
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286 //if (windata->gl_context) {
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287 //SDL_DFB_CHECKERR(windata->surface->Flip(windata->surface,NULL, DSFLIP_ONSYNC));
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288 //SDL_DFB_CHECKERR(windata->gl_context->context->Lock(windata->gl_context->context));
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289 //}
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290
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291 return;
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292 error:
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293 return;
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294 }
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295
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296 void
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297 DirectFB_GL_DeleteContext(_THIS, SDL_GLContext context)
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298 {
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299 DirectFB_GLContext *ctx = (DirectFB_GLContext *) context;
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300 DirectFB_GLContext *p;
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301
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302 if (ctx->is_locked)
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303 SDL_DFB_CHECK(ctx->context->Unlock(ctx->context));
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304 SDL_DFB_RELEASE(ctx->context);
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305
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306 for (p = _this->gl_data->firstgl; p && p->next != ctx; p = p->next)
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307 ;
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308 if (p)
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309 p->next = ctx->next;
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310 else
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311 _this->gl_data->firstgl = ctx->next;
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312
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313 SDL_DFB_FREE(ctx);
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314 }
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315
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316 void
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317 DirectFB_GL_FreeWindowContexts(_THIS, SDL_Window * window)
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318 {
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319 DirectFB_GLContext *p;
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320
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321 for (p = _this->gl_data->firstgl; p != NULL; p = p->next)
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322 if (p->sdl_window == window)
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323 {
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324 if (p->is_locked)
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325 SDL_DFB_CHECK(p->context->Unlock(p->context));
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326 SDL_DFB_RELEASE(p->context);
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327 }
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328 }
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329
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330 void
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331 DirectFB_GL_ReAllocWindowContexts(_THIS, SDL_Window * window)
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332 {
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333 DirectFB_GLContext *p;
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334
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335 for (p = _this->gl_data->firstgl; p != NULL; p = p->next)
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336 if (p->sdl_window == window)
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337 {
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338 SDL_DFB_WINDOWDATA(window);
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339 SDL_DFB_CHECK(windata->surface->GetGL(windata->surface,
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340 &p->context));
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341 if (p->is_locked)
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342 SDL_DFB_CHECK(p->context->Lock(p->context));
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343 }
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344 }
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345
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346 void
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347 DirectFB_GL_DestroyWindowContexts(_THIS, SDL_Window * window)
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348 {
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349 DirectFB_GLContext *p;
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350
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351 for (p = _this->gl_data->firstgl; p != NULL; p = p->next)
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352 if (p->sdl_window == window)
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353 DirectFB_GL_DeleteContext(_this, p);
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354 }
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355
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356 #endif
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357
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358 /* vi: set ts=4 sw=4 expandtab: */