author  Sam Lantinga <slouken@libsdl.org> 
Thu, 05 Jul 2007 06:14:26 +0000  
changeset 2150  abbe2c1dcf0a 
parent 1952  420716272158 
child 2178  114a541cfae2 
permissions  rwrr 
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/* 
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SDL  Simple DirectMedia Layer 
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Copyright (C) 19972006 Sam Lantinga 
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4 

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This library is free software; you can redistribute it and/or 
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modify it under the terms of the GNU Lesser General Public 
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License as published by the Free Software Foundation; either 
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version 2.1 of the License, or (at your option) any later version. 
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9 

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This library is distributed in the hope that it will be useful, 
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but WITHOUT ANY WARRANTY; without even the implied warranty of 
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
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Lesser General Public License for more details. 
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You should have received a copy of the GNU Lesser General Public 
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License along with this library; if not, write to the Free Software 
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 021101301 USA 
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Sam Lantinga 
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slouken@libsdl.org 
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*/ 
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#include "SDL_config.h" 
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#include "SDL_win32video.h" 
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/* WGL implementation of SDL OpenGL support */ 
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#if SDL_VIDEO_OPENGL_WGL 
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#include "SDL_opengl.h" 
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#define DEFAULT_OPENGL "OPENGL32.DLL" 
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int 
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WIN_GL_LoadLibrary(_THIS, const char *path) 
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{ 
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LPTSTR wpath; 
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HANDLE handle; 
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if (_this>gl_config.driver_loaded) { 
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if (path) { 
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SDL_SetError("OpenGL library already loaded"); 
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return 1; 
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} else { 
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++_this>gl_config.driver_loaded; 
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return 0; 
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} 
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} 
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if (path == NULL) { 
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path = SDL_getenv("SDL_OPENGL_LIBRARY"); 
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} 
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if (path == NULL) { 
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path = DEFAULT_OPENGL; 
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} 
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wpath = WIN_UTF8ToString(path); 
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handle = LoadLibrary(wpath); 
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SDL_free(wpath); 
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if (!handle) { 
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char message[1024]; 
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SDL_snprintf(message, SDL_arraysize(message), "LoadLibrary(\"%s\")", 
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path); 
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WIN_SetError(message); 
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return 1; 
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} 
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/* Load function pointers */ 
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_this>gl_data>wglGetProcAddress = (void *(WINAPI *) (const char *)) 
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GetProcAddress(handle, "wglGetProcAddress"); 
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_this>gl_data>wglCreateContext = (HGLRC(WINAPI *) (HDC)) 
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GetProcAddress(handle, "wglCreateContext"); 
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_this>gl_data>wglDeleteContext = (BOOL(WINAPI *) (HGLRC)) 
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GetProcAddress(handle, "wglDeleteContext"); 
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_this>gl_data>wglMakeCurrent = (BOOL(WINAPI *) (HDC, HGLRC)) 
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GetProcAddress(handle, "wglMakeCurrent"); 
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_this>gl_data>wglSwapIntervalEXT = (void (WINAPI *) (int)) 
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GetProcAddress(handle, "wglSwapIntervalEXT"); 
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_this>gl_data>wglGetSwapIntervalEXT = (int (WINAPI *) (void)) 
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GetProcAddress(handle, "wglGetSwapIntervalEXT"); 
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if (!_this>gl_data>wglGetProcAddress  
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!_this>gl_data>wglCreateContext  
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!_this>gl_data>wglDeleteContext  
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!_this>gl_data>wglMakeCurrent) { 
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SDL_SetError("Could not retrieve OpenGL functions"); 
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FreeLibrary(handle); 
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return 1; 
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} 
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_this>gl_config.dll_handle = handle; 
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SDL_strlcpy(_this>gl_config.driver_path, path, 
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SDL_arraysize(_this>gl_config.driver_path)); 
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_this>gl_config.driver_loaded = 1; 
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return 0; 
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} 
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void * 
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WIN_GL_GetProcAddress(_THIS, const char *proc) 
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{ 
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void *func; 
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/* This is to pick up extensions */ 
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func = _this>gl_data>wglGetProcAddress(proc); 
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if (!func) { 
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/* This is probably a normal GL function */ 
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func = GetProcAddress(_this>gl_config.dll_handle, proc); 
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} 
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return func; 
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} 
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static void 
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WIN_GL_UnloadLibrary(_THIS) 
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{ 
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if (_this>gl_config.driver_loaded > 0) { 
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if (_this>gl_config.driver_loaded > 0) { 
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return; 
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} 
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FreeLibrary((HMODULE) _this>gl_config.dll_handle); 
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_this>gl_config.dll_handle = NULL; 
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} 
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} 
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static void 
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WIN_GL_SetupPixelFormat(_THIS, PIXELFORMATDESCRIPTOR * pfd) 
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{ 
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SDL_zerop(pfd); 
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pfd>nSize = sizeof(*pfd); 
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pfd>nVersion = 1; 
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pfd>dwFlags = (PFD_DRAW_TO_WINDOW  PFD_SUPPORT_OPENGL); 
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if (_this>gl_config.double_buffer) { 
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pfd>dwFlags = PFD_DOUBLEBUFFER; 
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} 
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if (_this>gl_config.stereo) { 
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pfd>dwFlags = PFD_STEREO; 
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} 
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pfd>iLayerType = PFD_MAIN_PLANE; 
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pfd>iPixelType = PFD_TYPE_RGBA; 
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pfd>cRedBits = _this>gl_config.red_size; 
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pfd>cGreenBits = _this>gl_config.green_size; 
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pfd>cBlueBits = _this>gl_config.blue_size; 
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pfd>cAlphaBits = _this>gl_config.alpha_size; 
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141 
if (_this>gl_config.buffer_size) { 
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142 
pfd>cColorBits = 
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143 
_this>gl_config.buffer_size  _this>gl_config.alpha_size; 
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144 
} else { 
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145 
pfd>cColorBits = (pfd>cRedBits + pfd>cGreenBits + pfd>cBlueBits); 
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146 
} 
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147 
pfd>cAccumRedBits = _this>gl_config.accum_red_size; 
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148 
pfd>cAccumGreenBits = _this>gl_config.accum_green_size; 
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149 
pfd>cAccumBlueBits = _this>gl_config.accum_blue_size; 
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150 
pfd>cAccumAlphaBits = _this>gl_config.accum_alpha_size; 
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151 
pfd>cAccumBits = 
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152 
(pfd>cAccumRedBits + pfd>cAccumGreenBits + pfd>cAccumBlueBits + 
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153 
pfd>cAccumAlphaBits); 
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154 
pfd>cDepthBits = _this>gl_config.depth_size; 
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155 
pfd>cStencilBits = _this>gl_config.stencil_size; 
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156 
} 
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157 

2150  158 
/* Choose the closest pixel format that meets or exceeds the target. 
159 
FIXME: Should we weight any particular attribute over any other? 

160 
*/ 

161 
static int 

162 
WIN_GL_ChoosePixelFormat(HDC hdc, PIXELFORMATDESCRIPTOR * target) 

163 
{ 

164 
PIXELFORMATDESCRIPTOR pfd; 

165 
int count, index, best = 0; 

166 
unsigned int dist, best_dist = ~0U; 

167 

168 
count = DescribePixelFormat(hdc, 1, sizeof(pfd), NULL); 

169 

170 
for (index = 1; index <= count; index++) { 

171 

172 
if (!DescribePixelFormat(hdc, index, sizeof(pfd), &pfd)) { 

173 
continue; 

174 
} 

175 

176 
if ((pfd.dwFlags & target>dwFlags) != target>dwFlags) { 

177 
continue; 

178 
} 

179 

180 
if (pfd.iLayerType != target>iLayerType) { 

181 
continue; 

182 
} 

183 
if (pfd.iPixelType != target>iPixelType) { 

184 
continue; 

185 
} 

186 

187 
dist = 0; 

188 

189 
if (pfd.cColorBits < target>cColorBits) { 

190 
continue; 

191 
} else { 

192 
dist += (pfd.cColorBits  target>cColorBits); 

193 
} 

194 
if (pfd.cRedBits < target>cRedBits) { 

195 
continue; 

196 
} else { 

197 
dist += (pfd.cRedBits  target>cRedBits); 

198 
} 

199 
if (pfd.cGreenBits < target>cGreenBits) { 

200 
continue; 

201 
} else { 

202 
dist += (pfd.cGreenBits  target>cGreenBits); 

203 
} 

204 
if (pfd.cBlueBits < target>cBlueBits) { 

205 
continue; 

206 
} else { 

207 
dist += (pfd.cBlueBits  target>cBlueBits); 

208 
} 

209 
if (pfd.cAlphaBits < target>cAlphaBits) { 

210 
continue; 

211 
} else { 

212 
dist += (pfd.cAlphaBits  target>cAlphaBits); 

213 
} 

214 
if (pfd.cAccumBits < target>cAccumBits) { 

215 
continue; 

216 
} else { 

217 
dist += (pfd.cAccumBits  target>cAccumBits); 

218 
} 

219 
if (pfd.cAccumRedBits < target>cAccumRedBits) { 

220 
continue; 

221 
} else { 

222 
dist += (pfd.cAccumRedBits  target>cAccumRedBits); 

223 
} 

224 
if (pfd.cAccumGreenBits < target>cAccumGreenBits) { 

225 
continue; 

226 
} else { 

227 
dist += (pfd.cAccumGreenBits  target>cAccumGreenBits); 

228 
} 

229 
if (pfd.cAccumBlueBits < target>cAccumBlueBits) { 

230 
continue; 

231 
} else { 

232 
dist += (pfd.cAccumBlueBits  target>cAccumBlueBits); 

233 
} 

234 
if (pfd.cAccumAlphaBits < target>cAccumAlphaBits) { 

235 
continue; 

236 
} else { 

237 
dist += (pfd.cAccumAlphaBits  target>cAccumAlphaBits); 

238 
} 

239 
if (pfd.cDepthBits < target>cDepthBits) { 

240 
continue; 

241 
} else { 

242 
dist += (pfd.cDepthBits  target>cDepthBits); 

243 
} 

244 
if (pfd.cStencilBits < target>cStencilBits) { 

245 
continue; 

246 
} else { 

247 
dist += (pfd.cStencilBits  target>cStencilBits); 

248 
} 

249 

250 
if (dist < best_dist) { 

251 
best = index; 

252 
best_dist = dist; 

253 
} 

254 
} 

255 

256 
return best; 

257 
} 

258 

1913
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259 
static SDL_bool 
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260 
HasExtension(const char *extension, const char *extensions) 
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261 
{ 
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262 
const char *start; 
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263 
const char *where, *terminator; 
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264 

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265 
/* Extension names should not have spaces. */ 
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266 
where = SDL_strchr(extension, ' '); 
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267 
if (where  *extension == '\0') 
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268 
return SDL_FALSE; 
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269 

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270 
if (!extensions) 
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271 
return SDL_FALSE; 
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272 

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273 
/* It takes a bit of care to be foolproof about parsing the 
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274 
* OpenGL extensions string. Don't be fooled by substrings, 
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275 
* etc. */ 
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276 

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277 
start = extensions; 
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278 

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279 
for (;;) { 
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280 
where = SDL_strstr(start, extension); 
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281 
if (!where) 
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282 
break; 
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283 

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284 
terminator = where + SDL_strlen(extension); 
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285 
if (where == start  *(where  1) == ' ') 
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286 
if (*terminator == ' '  *terminator == '\0') 
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287 
return SDL_TRUE; 
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288 

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289 
start = terminator; 
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290 
} 
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291 
return SDL_FALSE; 
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diff
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292 
} 
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diff
changeset

293 

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294 
static void 
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diff
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295 
WIN_GL_InitExtensions(_THIS) 
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Implemented Windows OpenGL support
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diff
changeset

296 
{ 
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diff
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297 
HWND hwnd; 
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diff
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298 
HDC hdc; 
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Implemented Windows OpenGL support
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diff
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299 
PIXELFORMATDESCRIPTOR pfd; 
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Implemented Windows OpenGL support
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diff
changeset

300 
int pixel_format; 
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diff
changeset

301 
HGLRC hglrc; 
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diff
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302 
const char *(WINAPI * wglGetExtensionsStringARB) (HDC) = 0; 
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parents:
diff
changeset

303 
const char *extensions; 
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parents:
diff
changeset

304 

83420da906a5
Implemented Windows OpenGL support
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diff
changeset

305 
hwnd = 
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Implemented Windows OpenGL support
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diff
changeset

306 
CreateWindow(SDL_Appname, SDL_Appname, (WS_POPUP  WS_DISABLED), 0, 0, 
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Implemented Windows OpenGL support
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parents:
diff
changeset

307 
10, 10, NULL, NULL, SDL_Instance, NULL); 
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Implemented Windows OpenGL support
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parents:
diff
changeset

308 
WIN_PumpEvents(_this); 
83420da906a5
Implemented Windows OpenGL support
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parents:
diff
changeset

309 

83420da906a5
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diff
changeset

310 
hdc = GetDC(hwnd); 
83420da906a5
Implemented Windows OpenGL support
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parents:
diff
changeset

311 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

312 
WIN_GL_SetupPixelFormat(_this, &pfd); 
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Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

313 
pixel_format = ChoosePixelFormat(hdc, &pfd); 
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Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

314 
SetPixelFormat(hdc, pixel_format, &pfd); 
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Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

315 

83420da906a5
Implemented Windows OpenGL support
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parents:
diff
changeset

316 
hglrc = _this>gl_data>wglCreateContext(hdc); 
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Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

317 
if (hglrc) { 
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parents:
diff
changeset

318 
_this>gl_data>wglMakeCurrent(hdc, hglrc); 
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Implemented Windows OpenGL support
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parents:
diff
changeset

319 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

320 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
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diff
changeset

321 
wglGetExtensionsStringARB = (const char *(WINAPI *) (HDC)) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

322 
_this>gl_data>wglGetProcAddress("wglGetExtensionsStringARB"); 
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Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

323 
if (wglGetExtensionsStringARB) { 
83420da906a5
Implemented Windows OpenGL support
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parents:
diff
changeset

324 
extensions = wglGetExtensionsStringARB(hdc); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

325 
} else { 
83420da906a5
Implemented Windows OpenGL support
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parents:
diff
changeset

326 
extensions = NULL; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

327 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

328 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

329 
/* Check for WGL_ARB_pixel_format */ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

330 
_this>gl_data>WGL_ARB_pixel_format = 0; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

331 
if (HasExtension("WGL_ARB_pixel_format", extensions)) { 
83420da906a5
Implemented Windows OpenGL support
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parents:
diff
changeset

332 
_this>gl_data>wglChoosePixelFormatARB = (BOOL(WINAPI *) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

333 
(HDC, const int *, 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

334 
const FLOAT *, UINT, 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

335 
int *, UINT *)) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

336 
WIN_GL_GetProcAddress(_this, "wglChoosePixelFormatARB"); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

337 
_this>gl_data>wglGetPixelFormatAttribivARB = 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

338 
(BOOL(WINAPI *) (HDC, int, int, UINT, const int *, int *)) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

339 
WIN_GL_GetProcAddress(_this, "wglGetPixelFormatAttribivARB"); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

340 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

341 
if ((_this>gl_data>wglChoosePixelFormatARB != NULL) && 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

342 
(_this>gl_data>wglGetPixelFormatAttribivARB != NULL)) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

343 
_this>gl_data>WGL_ARB_pixel_format = 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

344 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

345 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

346 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

347 
/* Check for WGL_EXT_swap_control */ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

348 
if (HasExtension("WGL_EXT_swap_control", extensions)) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

349 
_this>gl_data>wglSwapIntervalEXT = 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

350 
WIN_GL_GetProcAddress(_this, "wglSwapIntervalEXT"); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

351 
_this>gl_data>wglGetSwapIntervalEXT = 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

352 
WIN_GL_GetProcAddress(_this, "wglGetSwapIntervalEXT"); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

353 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

354 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

355 
if (hglrc) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

356 
_this>gl_data>wglMakeCurrent(NULL, NULL); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

357 
_this>gl_data>wglDeleteContext(hglrc); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

358 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

359 
ReleaseDC(hwnd, hdc); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

360 
DestroyWindow(hwnd); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

361 
WIN_PumpEvents(_this); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

362 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

363 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

364 
static int 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

365 
WIN_GL_Initialize(_THIS) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

366 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

367 
if (_this>gl_data) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

368 
++_this>gl_data>initialized; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

369 
return 0; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

370 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

371 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

372 
_this>gl_data = 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

373 
(struct SDL_GLDriverData *) SDL_calloc(1, 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

374 
sizeof(struct 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

375 
SDL_GLDriverData)); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

376 
if (!_this>gl_data) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

377 
SDL_OutOfMemory(); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

378 
return 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

379 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

380 
_this>gl_data>initialized = 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

381 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

382 
if (WIN_GL_LoadLibrary(_this, NULL) < 0) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

383 
return 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

384 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

385 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

386 
/* Initialize extensions */ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

387 
WIN_GL_InitExtensions(_this); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

388 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

389 
return 0; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

390 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

391 

1952
420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

392 
static void 
420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

393 
WIN_GL_Shutdown(_THIS) 
420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

394 
{ 
420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

395 
if (!_this>gl_data  (_this>gl_data>initialized > 0)) { 
420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

396 
return; 
420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

397 
} 
420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

398 

420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

399 
WIN_GL_UnloadLibrary(_this); 
420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

400 

420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

401 
SDL_free(_this>gl_data); 
420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

402 
_this>gl_data = NULL; 
420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

403 
} 
420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

404 

1913
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

405 
int 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

406 
WIN_GL_SetupWindow(_THIS, SDL_Window * window) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

407 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

408 
HDC hdc = ((SDL_WindowData *) window>driverdata)>hdc; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

409 
PIXELFORMATDESCRIPTOR pfd; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

410 
int pixel_format; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

411 
unsigned int matching; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

412 
int iAttribs[64]; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

413 
int *iAttr; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

414 
float fAttribs[1] = { 0 }; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

415 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

416 
if (WIN_GL_Initialize(_this) < 0) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

417 
return 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

418 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

419 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

420 
WIN_GL_SetupPixelFormat(_this, &pfd); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

421 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

422 
/* setup WGL_ARB_pixel_format attribs */ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

423 
iAttr = &iAttribs[0]; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

424 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

425 
*iAttr++ = WGL_DRAW_TO_WINDOW_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

426 
*iAttr++ = GL_TRUE; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

427 
*iAttr++ = WGL_ACCELERATION_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

428 
*iAttr++ = WGL_FULL_ACCELERATION_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

429 
*iAttr++ = WGL_RED_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

430 
*iAttr++ = _this>gl_config.red_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

431 
*iAttr++ = WGL_GREEN_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

432 
*iAttr++ = _this>gl_config.green_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

433 
*iAttr++ = WGL_BLUE_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

434 
*iAttr++ = _this>gl_config.blue_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

435 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

436 
if (_this>gl_config.alpha_size) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

437 
*iAttr++ = WGL_ALPHA_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

438 
*iAttr++ = _this>gl_config.alpha_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

439 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

440 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

441 
*iAttr++ = WGL_DOUBLE_BUFFER_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

442 
*iAttr++ = _this>gl_config.double_buffer; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

443 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

444 
*iAttr++ = WGL_DEPTH_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

445 
*iAttr++ = _this>gl_config.depth_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

446 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

447 
if (_this>gl_config.stencil_size) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

448 
*iAttr++ = WGL_STENCIL_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

449 
*iAttr++ = _this>gl_config.stencil_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

450 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

451 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

452 
if (_this>gl_config.accum_red_size) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

453 
*iAttr++ = WGL_ACCUM_RED_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

454 
*iAttr++ = _this>gl_config.accum_red_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

455 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

456 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

457 
if (_this>gl_config.accum_green_size) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

458 
*iAttr++ = WGL_ACCUM_GREEN_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

459 
*iAttr++ = _this>gl_config.accum_green_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

460 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

461 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

462 
if (_this>gl_config.accum_blue_size) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

463 
*iAttr++ = WGL_ACCUM_BLUE_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

464 
*iAttr++ = _this>gl_config.accum_blue_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

465 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

466 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

467 
if (_this>gl_config.accum_alpha_size) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

468 
*iAttr++ = WGL_ACCUM_ALPHA_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

469 
*iAttr++ = _this>gl_config.accum_alpha_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

470 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

471 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

472 
if (_this>gl_config.stereo) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

473 
*iAttr++ = WGL_STEREO_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

474 
*iAttr++ = GL_TRUE; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

475 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

476 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

477 
if (_this>gl_config.multisamplebuffers) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

478 
*iAttr++ = WGL_SAMPLE_BUFFERS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

479 
*iAttr++ = _this>gl_config.multisamplebuffers; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

480 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

481 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

482 
if (_this>gl_config.multisamplesamples) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

483 
*iAttr++ = WGL_SAMPLES_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

484 
*iAttr++ = _this>gl_config.multisamplesamples; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

485 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

486 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

487 
if (_this>gl_config.accelerated >= 0) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

488 
*iAttr++ = WGL_ACCELERATION_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

489 
*iAttr++ = 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

490 
(_this>gl_config. 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

491 
accelerated ? WGL_GENERIC_ACCELERATION_ARB : 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

492 
WGL_NO_ACCELERATION_ARB); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

493 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

494 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

495 
*iAttr = 0; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

496 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

497 
/* Choose and set the closest available pixel format */ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

498 
if (!_this>gl_data>WGL_ARB_pixel_format 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

499 
 !_this>gl_data>wglChoosePixelFormatARB(hdc, iAttribs, fAttribs, 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

500 
1, &pixel_format, 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

501 
&matching)  !matching) { 
2150  502 
pixel_format = WIN_GL_ChoosePixelFormat(hdc, &pfd); 
1913
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

503 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

504 
if (!pixel_format) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

505 
SDL_SetError("No matching GL pixel format available"); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

506 
return 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

507 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

508 
if (!SetPixelFormat(hdc, pixel_format, &pfd)) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

509 
WIN_SetError("SetPixelFormat()"); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

510 
return (1); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

511 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

512 
return 0; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

513 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

514 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

515 
void 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

516 
WIN_GL_CleanupWindow(_THIS, SDL_Window * window) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

517 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

518 
WIN_GL_Shutdown(_this); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

519 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

520 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

521 
SDL_GLContext 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

522 
WIN_GL_CreateContext(_THIS, SDL_Window * window) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

523 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

524 
HDC hdc = ((SDL_WindowData *) window>driverdata)>hdc; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

525 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

526 
return _this>gl_data>wglCreateContext(hdc); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

527 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

528 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

529 
int 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

530 
WIN_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

531 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

532 
HDC hdc; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

533 
int status; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

534 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

535 
if (window) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

536 
hdc = ((SDL_WindowData *) window>driverdata)>hdc; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

537 
} else { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

538 
hdc = NULL; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

539 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

540 
if (!_this>gl_data>wglMakeCurrent(hdc, (HGLRC) context)) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

541 
WIN_SetError("wglMakeCurrent()"); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

542 
status = 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

543 
} else { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

544 
status = 0; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

545 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

546 
return status; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

547 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

548 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

549 
int 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

550 
WIN_GL_SetSwapInterval(_THIS, int interval) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

551 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

552 
if (_this>gl_data>wglSwapIntervalEXT) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

553 
_this>gl_data>wglSwapIntervalEXT(interval); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

554 
return 0; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

555 
} else { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

556 
SDL_Unsupported(); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

557 
return 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

558 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

559 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

560 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

561 
int 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

562 
WIN_GL_GetSwapInterval(_THIS) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

563 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

564 
if (_this>gl_data>wglGetSwapIntervalEXT) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

565 
return _this>gl_data>wglGetSwapIntervalEXT(); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

566 
} else { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

567 
SDL_Unsupported(); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

568 
return 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

569 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

570 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

571 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

572 
void 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

573 
WIN_GL_SwapWindow(_THIS, SDL_Window * window) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

574 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

575 
HDC hdc = ((SDL_WindowData *) window>driverdata)>hdc; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

576 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

577 
SwapBuffers(hdc); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

578 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

579 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

580 
void 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

581 
WIN_GL_DeleteContext(_THIS, SDL_GLContext context) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

582 
{ 
1936
83946ee0ff1f
Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
1926
diff
changeset

583 
_this>gl_data>wglDeleteContext((HGLRC) context); 
1913
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

584 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

585 

1952
420716272158
Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
1936
diff
changeset

586 
#endif /* SDL_VIDEO_OPENGL_WGL */ 
1913
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

587 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

588 
/* vi: set ts=4 sw=4 expandtab: */ 