annotate src/video/directfb/SDL_DirectFB_opengl.c @ 5275:7aba0406c273

Frank Zago to sdl The following patch fixes some of the bitrot for the Nintendo DS port. The support is still basic at the moment, but it allows to run the "general" test under the current head of tree (parent: 5269:11bd1585efb5 tip). Most of the patch is mine, but I integrated a couple changes that John Magnotti posted on Feb 1st.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 12 Feb 2011 11:36:56 -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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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;
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
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,
140a7edcf2bd Date: Sun, 31 Aug 2008 17:53:59 +0200
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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;
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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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Sam Lantinga <slouken@libsdl.org>
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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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Sam Lantinga <slouken@libsdl.org>
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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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diff changeset
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>
parents:
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>
parents:
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>
parents:
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));
4636
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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: */