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comparison src/video/x11/SDL_x11opengl.c @ 3139:7f684f249ec9

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author Sam Lantinga <slouken@libsdl.org>
date Sat, 23 May 2009 22:41:08 +0000
parents cdeee9f9b14b
children 08c5964f2a34
comparison
equal deleted inserted replaced
3125:d71d8ceda8b3 3139:7f684f249ec9
75 #endif 75 #endif
76 76
77 static void X11_GL_InitExtensions(_THIS); 77 static void X11_GL_InitExtensions(_THIS);
78 78
79 /* Typedef for the GL 3.0 context creation function */ 79 /* Typedef for the GL 3.0 context creation function */
80 typedef GLXContext ( * PFNGLXCREATECONTEXTATTRIBSARBPROC) (Display *dpy, GLXFBConfig config, GLXContext share_context, Bool direct, const int *attrib_list); 80 typedef GLXContext(*PFNGLXCREATECONTEXTATTRIBSARBPROC) (Display * dpy,
81 GLXFBConfig config,
82 GLXContext
83 share_context,
84 Bool direct,
85 const int
86 *attrib_list);
81 87
82 int 88 int
83 X11_GL_LoadLibrary(_THIS, const char *path) 89 X11_GL_LoadLibrary(_THIS, const char *path)
84 { 90 {
85 void *handle; 91 void *handle;
281 XVisualInfo *vinfo; 287 XVisualInfo *vinfo;
282 288
283 /* 64 seems nice. */ 289 /* 64 seems nice. */
284 int attribs[64]; 290 int attribs[64];
285 int i = 0; 291 int i = 0;
286 292
287 /* Setup our GLX attributes according to the gl_config. */ 293 /* Setup our GLX attributes according to the gl_config. */
288 attribs[i++] = GLX_RGBA; 294 attribs[i++] = GLX_RGBA;
289 attribs[i++] = GLX_RED_SIZE; 295 attribs[i++] = GLX_RED_SIZE;
290 attribs[i++] = _this->gl_config.red_size; 296 attribs[i++] = _this->gl_config.red_size;
291 attribs[i++] = GLX_GREEN_SIZE; 297 attribs[i++] = GLX_GREEN_SIZE;
393 XGetWindowAttributes(display, data->window, &xattr); 399 XGetWindowAttributes(display, data->window, &xattr);
394 v.screen = screen; 400 v.screen = screen;
395 v.visualid = XVisualIDFromVisual(xattr.visual); 401 v.visualid = XVisualIDFromVisual(xattr.visual);
396 vinfo = XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &v, &n); 402 vinfo = XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &v, &n);
397 if (vinfo) { 403 if (vinfo) {
398 if (_this->gl_config.major_version < 3) { 404 if (_this->gl_config.major_version < 3) {
399 context = 405 context =
400 _this->gl_data->glXCreateContext(display, vinfo, NULL, True); 406 _this->gl_data->glXCreateContext(display, vinfo, NULL, True);
401 } else { 407 } else {
402 /* If we want a GL 3.0 context or later we need to get a temporary 408 /* If we want a GL 3.0 context or later we need to get a temporary
403 context to grab the new context creation function */ 409 context to grab the new context creation function */
404 GLXContext temp_context = _this->gl_data->glXCreateContext(display, vinfo, NULL, True); 410 GLXContext temp_context =
411 _this->gl_data->glXCreateContext(display, vinfo, NULL, True);
405 if (!temp_context) { 412 if (!temp_context) {
406 SDL_SetError("Could not create GL context"); 413 SDL_SetError("Could not create GL context");
407 return NULL; 414 return NULL;
408 } else { 415 } else {
409 int attribs[] = { 416 int attribs[] = {
410 GLX_CONTEXT_MAJOR_VERSION_ARB, _this->gl_config.major_version, 417 GLX_CONTEXT_MAJOR_VERSION_ARB,
411 GLX_CONTEXT_MINOR_VERSION_ARB, _this->gl_config.minor_version, 418 _this->gl_config.major_version,
412 0 419 GLX_CONTEXT_MINOR_VERSION_ARB,
420 _this->gl_config.minor_version,
421 0
413 }; 422 };
414 423
415 /* Get a pointer to the context creation function for GL 3.0 */ 424 /* Get a pointer to the context creation function for GL 3.0 */
416 PFNGLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribs = (PFNGLXCREATECONTEXTATTRIBSARBPROC)_this->gl_data->glXGetProcAddress((GLubyte*)"glXCreateContextAttribsARB"); 425 PFNGLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribs =
426 (PFNGLXCREATECONTEXTATTRIBSARBPROC) _this->gl_data->
427 glXGetProcAddress((GLubyte *)
428 "glXCreateContextAttribsARB");
417 if (!glXCreateContextAttribs) { 429 if (!glXCreateContextAttribs) {
418 SDL_SetError("GL 3.x is not supported"); 430 SDL_SetError("GL 3.x is not supported");
419 context = temp_context; 431 context = temp_context;
420 } else { 432 } else {
421 /* Create a GL 3.x context */ 433 /* Create a GL 3.x context */
422 GLXFBConfig *framebuffer_config = NULL; 434 GLXFBConfig *framebuffer_config = NULL;
423 int fbcount = 0; 435 int fbcount = 0;
424 GLXFBConfig* (*glXChooseFBConfig)(Display* disp, int screen, const int* attrib_list, int* nelements); 436 GLXFBConfig *(*glXChooseFBConfig) (Display * disp,
425 437 int screen,
426 glXChooseFBConfig = (GLXFBConfig* (*)(Display*, int, const int*, int*))_this->gl_data->glXGetProcAddress((GLubyte*)"glXChooseFBConfig"); 438 const int *attrib_list,
427 439 int *nelements);
428 if (!glXChooseFBConfig || !(framebuffer_config = glXChooseFBConfig(display, DefaultScreen(display), NULL, &fbcount))) { 440
429 SDL_SetError("No good framebuffers found. GL 3.x disabled"); 441 glXChooseFBConfig =
442 (GLXFBConfig *
443 (*)(Display *, int, const int *,
444 int *)) _this->gl_data->
445 glXGetProcAddress((GLubyte *) "glXChooseFBConfig");
446
447 if (!glXChooseFBConfig
448 || !(framebuffer_config =
449 glXChooseFBConfig(display,
450 DefaultScreen(display), NULL,
451 &fbcount))) {
452 SDL_SetError
453 ("No good framebuffers found. GL 3.x disabled");
430 context = temp_context; 454 context = temp_context;
431 } else { 455 } else {
432 context = glXCreateContextAttribs(display, framebuffer_config[0], NULL, True, attribs); 456 context =
433 _this->gl_data->glXDestroyContext(display, temp_context); 457 glXCreateContextAttribs(display,
458 framebuffer_config[0],
459 NULL, True, attribs);
460 _this->gl_data->glXDestroyContext(display,
461 temp_context);
434 } 462 }
435 } 463 }
436 } 464 }
437 } 465 }
438 XFree(vinfo); 466 XFree(vinfo);