1 /*
2 * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
3 * Copyright © 2008 Red Hat, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Soft-
7 * ware"), to deal in the Software without restriction, including without
8 * limitation the rights to use, copy, modify, merge, publish, distribute,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, provided that the above copyright
11 * notice(s) and this permission notice appear in all copies of the Soft-
12 * ware and that both the above copyright notice(s) and this permission
13 * notice appear in supporting documentation.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
17 * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
18 * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
19 * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
20 * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
21 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
22 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
23 * MANCE OF THIS SOFTWARE.
24 *
25 * Except as contained in this notice, the name of a copyright holder shall
26 * not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization of
28 * the copyright holder.
29 *
30 * Authors:
31 * Kevin E. Martin <kevin@precisioninsight.com>
32 * Brian Paul <brian@precisioninsight.com>
33 * Kristian Høgsberg (krh@redhat.com)
34 */
35
36 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
37
38 #include <unistd.h>
39 #include <dlfcn.h>
40 #include <stdarg.h>
41 #include "glxclient.h"
42 #include "dri_common.h"
43 #include "loader.h"
44
45 #ifndef RTLD_NOW
46 #define RTLD_NOW 0
47 #endif
48 #ifndef RTLD_GLOBAL
49 #define RTLD_GLOBAL 0
50 #endif
51
52 _X_HIDDEN void
dri_message(int level,const char * f,...)53 dri_message(int level, const char *f, ...)
54 {
55 va_list args;
56 int threshold = _LOADER_WARNING;
57 const char *libgl_debug;
58
59 libgl_debug = getenv("LIBGL_DEBUG");
60 if (libgl_debug) {
61 if (strstr(libgl_debug, "quiet"))
62 threshold = _LOADER_FATAL;
63 else if (strstr(libgl_debug, "verbose"))
64 threshold = _LOADER_DEBUG;
65 }
66
67 /* Note that the _LOADER_* levels are lower numbers for more severe. */
68 if (level <= threshold) {
69 fprintf(stderr, "libGL%s: ", level <= _LOADER_WARNING ? " error" : "");
70 va_start(args, f);
71 vfprintf(stderr, f, args);
72 va_end(args);
73 }
74 }
75
76 #ifndef GL_LIB_NAME
77 #define GL_LIB_NAME "libGL.so.1"
78 #endif
79
80 #ifndef DEFAULT_DRIVER_DIR
81 /* this is normally defined in Mesa/configs/default with DRI_DRIVER_SEARCH_PATH */
82 #define DEFAULT_DRIVER_DIR "/usr/local/lib/dri"
83 #endif
84
85 /**
86 * Try to \c dlopen the named driver.
87 *
88 * This function adds the "_dri.so" suffix to the driver name and searches the
89 * directories specified by the \c LIBGL_DRIVERS_PATH environment variable in
90 * order to find the driver.
91 *
92 * \param driverName - a name like "i965", "radeon", "nouveau", etc.
93 *
94 * \returns
95 * A handle from \c dlopen, or \c NULL if driver file not found.
96 */
97 _X_HIDDEN void *
driOpenDriver(const char * driverName)98 driOpenDriver(const char *driverName)
99 {
100 void *glhandle, *handle;
101 const char *libPaths, *p, *next;
102 char realDriverName[200];
103 int len;
104
105 /* Attempt to make sure libGL symbols will be visible to the driver */
106 glhandle = dlopen(GL_LIB_NAME, RTLD_NOW | RTLD_GLOBAL);
107
108 libPaths = NULL;
109 if (geteuid() == getuid()) {
110 /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
111 libPaths = getenv("LIBGL_DRIVERS_PATH");
112 if (!libPaths)
113 libPaths = getenv("LIBGL_DRIVERS_DIR"); /* deprecated */
114 }
115 if (libPaths == NULL)
116 libPaths = DEFAULT_DRIVER_DIR;
117
118 handle = NULL;
119 for (p = libPaths; *p; p = next) {
120 next = strchr(p, ':');
121 if (next == NULL) {
122 len = strlen(p);
123 next = p + len;
124 }
125 else {
126 len = next - p;
127 next++;
128 }
129
130 #ifdef GLX_USE_TLS
131 snprintf(realDriverName, sizeof realDriverName,
132 "%.*s/tls/%s_dri.so", len, p, driverName);
133 InfoMessageF("OpenDriver: trying %s\n", realDriverName);
134 handle = dlopen(realDriverName, RTLD_NOW | RTLD_GLOBAL);
135 #endif
136
137 if (handle == NULL) {
138 snprintf(realDriverName, sizeof realDriverName,
139 "%.*s/%s_dri.so", len, p, driverName);
140 InfoMessageF("OpenDriver: trying %s\n", realDriverName);
141 handle = dlopen(realDriverName, RTLD_NOW | RTLD_GLOBAL);
142 }
143
144 if (handle != NULL)
145 break;
146 else
147 InfoMessageF("dlopen %s failed (%s)\n", realDriverName, dlerror());
148 }
149
150 if (!handle)
151 ErrorMessageF("unable to load driver: %s_dri.so\n", driverName);
152
153 if (glhandle)
154 dlclose(glhandle);
155
156 return handle;
157 }
158
159 _X_HIDDEN const __DRIextension **
driGetDriverExtensions(void * handle,const char * driver_name)160 driGetDriverExtensions(void *handle, const char *driver_name)
161 {
162 const __DRIextension **extensions = NULL;
163 const __DRIextension **(*get_extensions)(void);
164 char *get_extensions_name = loader_get_extensions_name(driver_name);
165
166 if (get_extensions_name) {
167 get_extensions = dlsym(handle, get_extensions_name);
168 if (get_extensions) {
169 free(get_extensions_name);
170 return get_extensions();
171 } else {
172 InfoMessageF("driver does not expose %s(): %s\n",
173 get_extensions_name, dlerror());
174 free(get_extensions_name);
175 }
176 }
177
178 extensions = dlsym(handle, __DRI_DRIVER_EXTENSIONS);
179 if (extensions == NULL) {
180 ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
181 return NULL;
182 }
183
184 return extensions;
185 }
186
187 static GLboolean
__driGetMSCRate(__DRIdrawable * draw,int32_t * numerator,int32_t * denominator,void * loaderPrivate)188 __driGetMSCRate(__DRIdrawable *draw,
189 int32_t * numerator, int32_t * denominator,
190 void *loaderPrivate)
191 {
192 __GLXDRIdrawable *glxDraw = loaderPrivate;
193
194 return __glxGetMscRate(glxDraw->psc, numerator, denominator);
195 }
196
197 _X_HIDDEN const __DRIsystemTimeExtension systemTimeExtension = {
198 .base = {__DRI_SYSTEM_TIME, 1 },
199
200 .getUST = __glXGetUST,
201 .getMSCRate = __driGetMSCRate
202 };
203
204 #define __ATTRIB(attrib, field) \
205 { attrib, offsetof(struct glx_config, field) }
206
207 static const struct
208 {
209 unsigned int attrib, offset;
210 } attribMap[] = {
211 __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits),
212 __ATTRIB(__DRI_ATTRIB_LEVEL, level),
213 __ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits),
214 __ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits),
215 __ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits),
216 __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits),
217 __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE, depthBits),
218 __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE, stencilBits),
219 __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits),
220 __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits),
221 __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits),
222 __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits),
223 __ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS, sampleBuffers),
224 __ATTRIB(__DRI_ATTRIB_SAMPLES, samples),
225 __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode),
226 __ATTRIB(__DRI_ATTRIB_STEREO, stereoMode),
227 __ATTRIB(__DRI_ATTRIB_AUX_BUFFERS, numAuxBuffers),
228 #if 0
229 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE, transparentPixel),
230 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE, transparentIndex),
231 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE, transparentRed),
232 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE, transparentGreen),
233 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE, transparentBlue),
234 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE, transparentAlpha),
235 __ATTRIB(__DRI_ATTRIB_RED_MASK, redMask),
236 __ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask),
237 __ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask),
238 __ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask),
239 #endif
240 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH, maxPbufferWidth),
241 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT, maxPbufferHeight),
242 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS, maxPbufferPixels),
243 __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH, optimalPbufferWidth),
244 __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT, optimalPbufferHeight),
245 __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod),
246 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB, bindToTextureRgb),
247 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA, bindToTextureRgba),
248 __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE,
249 bindToMipmapTexture),
250 __ATTRIB(__DRI_ATTRIB_YINVERTED, yInverted),
251 __ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE, sRGBCapable)
252 };
253
254 static int
scalarEqual(struct glx_config * mode,unsigned int attrib,unsigned int value)255 scalarEqual(struct glx_config *mode, unsigned int attrib, unsigned int value)
256 {
257 unsigned glxValue, i;
258
259 for (i = 0; i < ARRAY_SIZE(attribMap); i++)
260 if (attribMap[i].attrib == attrib) {
261 glxValue = *(unsigned int *) ((char *) mode + attribMap[i].offset);
262 return glxValue == GLX_DONT_CARE || glxValue == value;
263 }
264
265 return GL_TRUE; /* Is a non-existing attribute equal to value? */
266 }
267
268 static int
driConfigEqual(const __DRIcoreExtension * core,struct glx_config * config,const __DRIconfig * driConfig)269 driConfigEqual(const __DRIcoreExtension *core,
270 struct glx_config *config, const __DRIconfig *driConfig)
271 {
272 unsigned int attrib, value, glxValue;
273 int i;
274
275 i = 0;
276 while (core->indexConfigAttrib(driConfig, i++, &attrib, &value)) {
277 switch (attrib) {
278 case __DRI_ATTRIB_RENDER_TYPE:
279 glxValue = 0;
280 if (value & __DRI_ATTRIB_RGBA_BIT) {
281 glxValue |= GLX_RGBA_BIT;
282 }
283 if (value & __DRI_ATTRIB_COLOR_INDEX_BIT) {
284 glxValue |= GLX_COLOR_INDEX_BIT;
285 }
286 if (value & __DRI_ATTRIB_FLOAT_BIT) {
287 glxValue |= GLX_RGBA_FLOAT_BIT_ARB;
288 }
289 if (value & __DRI_ATTRIB_UNSIGNED_FLOAT_BIT) {
290 glxValue |= GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT;
291 }
292 if (glxValue != config->renderType)
293 return GL_FALSE;
294 break;
295
296 case __DRI_ATTRIB_CONFIG_CAVEAT:
297 if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
298 glxValue = GLX_NON_CONFORMANT_CONFIG;
299 else if (value & __DRI_ATTRIB_SLOW_BIT)
300 glxValue = GLX_SLOW_CONFIG;
301 else
302 glxValue = GLX_NONE;
303 if (glxValue != config->visualRating)
304 return GL_FALSE;
305 break;
306
307 case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS:
308 glxValue = 0;
309 if (value & __DRI_ATTRIB_TEXTURE_1D_BIT)
310 glxValue |= GLX_TEXTURE_1D_BIT_EXT;
311 if (value & __DRI_ATTRIB_TEXTURE_2D_BIT)
312 glxValue |= GLX_TEXTURE_2D_BIT_EXT;
313 if (value & __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT)
314 glxValue |= GLX_TEXTURE_RECTANGLE_BIT_EXT;
315 if (config->bindToTextureTargets != GLX_DONT_CARE &&
316 glxValue != config->bindToTextureTargets)
317 return GL_FALSE;
318 break;
319
320 case __DRI_ATTRIB_SWAP_METHOD:
321 if (value == __DRI_ATTRIB_SWAP_EXCHANGE)
322 glxValue = GLX_SWAP_EXCHANGE_OML;
323 else if (value == __DRI_ATTRIB_SWAP_COPY)
324 glxValue = GLX_SWAP_COPY_OML;
325 else
326 glxValue = GLX_SWAP_UNDEFINED_OML;
327
328 if (!scalarEqual(config, attrib, glxValue))
329 return GL_FALSE;
330
331 break;
332
333 default:
334 if (!scalarEqual(config, attrib, value))
335 return GL_FALSE;
336 }
337 }
338
339 return GL_TRUE;
340 }
341
342 static struct glx_config *
createDriMode(const __DRIcoreExtension * core,struct glx_config * config,const __DRIconfig ** driConfigs)343 createDriMode(const __DRIcoreExtension * core,
344 struct glx_config *config, const __DRIconfig **driConfigs)
345 {
346 __GLXDRIconfigPrivate *driConfig;
347 int i;
348
349 for (i = 0; driConfigs[i]; i++) {
350 if (driConfigEqual(core, config, driConfigs[i]))
351 break;
352 }
353
354 if (driConfigs[i] == NULL)
355 return NULL;
356
357 driConfig = malloc(sizeof *driConfig);
358 if (driConfig == NULL)
359 return NULL;
360
361 driConfig->base = *config;
362 driConfig->driConfig = driConfigs[i];
363
364 return &driConfig->base;
365 }
366
367 _X_HIDDEN struct glx_config *
driConvertConfigs(const __DRIcoreExtension * core,struct glx_config * configs,const __DRIconfig ** driConfigs)368 driConvertConfigs(const __DRIcoreExtension * core,
369 struct glx_config *configs, const __DRIconfig **driConfigs)
370 {
371 struct glx_config head, *tail, *m;
372
373 tail = &head;
374 head.next = NULL;
375 for (m = configs; m; m = m->next) {
376 tail->next = createDriMode(core, m, driConfigs);
377 if (tail->next == NULL) {
378 /* no matching dri config for m */
379 continue;
380 }
381
382
383 tail = tail->next;
384 }
385
386 return head.next;
387 }
388
389 _X_HIDDEN void
driDestroyConfigs(const __DRIconfig ** configs)390 driDestroyConfigs(const __DRIconfig **configs)
391 {
392 int i;
393
394 for (i = 0; configs[i]; i++)
395 free((__DRIconfig *) configs[i]);
396 free(configs);
397 }
398
399 static struct glx_config *
driInferDrawableConfig(struct glx_screen * psc,GLXDrawable draw)400 driInferDrawableConfig(struct glx_screen *psc, GLXDrawable draw)
401 {
402 unsigned int fbconfig = 0;
403
404 if (__glXGetDrawableAttribute(psc->dpy, draw, GLX_FBCONFIG_ID, &fbconfig)) {
405 return glx_config_find_fbconfig(psc->configs, fbconfig);
406 }
407
408 return NULL;
409 }
410
411 _X_HIDDEN __GLXDRIdrawable *
driFetchDrawable(struct glx_context * gc,GLXDrawable glxDrawable)412 driFetchDrawable(struct glx_context *gc, GLXDrawable glxDrawable)
413 {
414 struct glx_display *const priv = __glXInitialize(gc->psc->dpy);
415 __GLXDRIdrawable *pdraw;
416 struct glx_screen *psc;
417 struct glx_config *config = gc->config;
418
419 if (priv == NULL)
420 return NULL;
421
422 if (glxDrawable == None)
423 return NULL;
424
425 psc = priv->screens[gc->screen];
426 if (priv->drawHash == NULL)
427 return NULL;
428
429 if (__glxHashLookup(priv->drawHash, glxDrawable, (void *) &pdraw) == 0) {
430 pdraw->refcount ++;
431 return pdraw;
432 }
433
434 if (config == NULL)
435 config = driInferDrawableConfig(gc->psc, glxDrawable);
436 if (config == NULL)
437 return NULL;
438
439 pdraw = psc->driScreen->createDrawable(psc, glxDrawable, glxDrawable,
440 config);
441
442 if (pdraw == NULL) {
443 ErrorMessageF("failed to create drawable\n");
444 return NULL;
445 }
446
447 if (__glxHashInsert(priv->drawHash, glxDrawable, pdraw)) {
448 (*pdraw->destroyDrawable) (pdraw);
449 return NULL;
450 }
451 pdraw->refcount = 1;
452
453 return pdraw;
454 }
455
456 _X_HIDDEN void
driReleaseDrawables(struct glx_context * gc)457 driReleaseDrawables(struct glx_context *gc)
458 {
459 const struct glx_display *priv = gc->psc->display;
460 __GLXDRIdrawable *pdraw;
461
462 if (priv == NULL)
463 return;
464
465 if (__glxHashLookup(priv->drawHash,
466 gc->currentDrawable, (void *) &pdraw) == 0) {
467 if (pdraw->drawable == pdraw->xDrawable) {
468 pdraw->refcount --;
469 if (pdraw->refcount == 0) {
470 (*pdraw->destroyDrawable)(pdraw);
471 __glxHashDelete(priv->drawHash, gc->currentDrawable);
472 }
473 }
474 }
475
476 if (__glxHashLookup(priv->drawHash,
477 gc->currentReadable, (void *) &pdraw) == 0) {
478 if (pdraw->drawable == pdraw->xDrawable) {
479 pdraw->refcount --;
480 if (pdraw->refcount == 0) {
481 (*pdraw->destroyDrawable)(pdraw);
482 __glxHashDelete(priv->drawHash, gc->currentReadable);
483 }
484 }
485 }
486
487 gc->currentDrawable = None;
488 gc->currentReadable = None;
489
490 }
491
492 _X_HIDDEN bool
dri2_convert_glx_attribs(unsigned num_attribs,const uint32_t * attribs,unsigned * major_ver,unsigned * minor_ver,uint32_t * render_type,uint32_t * flags,unsigned * api,int * reset,int * release,unsigned * error)493 dri2_convert_glx_attribs(unsigned num_attribs, const uint32_t *attribs,
494 unsigned *major_ver, unsigned *minor_ver,
495 uint32_t *render_type, uint32_t *flags, unsigned *api,
496 int *reset, int *release, unsigned *error)
497 {
498 unsigned i;
499 bool got_profile = false;
500 uint32_t profile;
501
502 *major_ver = 1;
503 *minor_ver = 0;
504 *render_type = GLX_RGBA_TYPE;
505 *reset = __DRI_CTX_RESET_NO_NOTIFICATION;
506 *release = __DRI_CTX_RELEASE_BEHAVIOR_FLUSH;
507 *flags = 0;
508 *api = __DRI_API_OPENGL;
509
510 if (num_attribs == 0) {
511 return true;
512 }
513
514 /* This is actually an internal error, but what the heck.
515 */
516 if (attribs == NULL) {
517 *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
518 return false;
519 }
520
521 for (i = 0; i < num_attribs; i++) {
522 switch (attribs[i * 2]) {
523 case GLX_CONTEXT_MAJOR_VERSION_ARB:
524 *major_ver = attribs[i * 2 + 1];
525 break;
526 case GLX_CONTEXT_MINOR_VERSION_ARB:
527 *minor_ver = attribs[i * 2 + 1];
528 break;
529 case GLX_CONTEXT_FLAGS_ARB:
530 *flags = attribs[i * 2 + 1];
531 break;
532 case GLX_CONTEXT_PROFILE_MASK_ARB:
533 profile = attribs[i * 2 + 1];
534 got_profile = true;
535 break;
536 case GLX_RENDER_TYPE:
537 *render_type = attribs[i * 2 + 1];
538 break;
539 case GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB:
540 switch (attribs[i * 2 + 1]) {
541 case GLX_NO_RESET_NOTIFICATION_ARB:
542 *reset = __DRI_CTX_RESET_NO_NOTIFICATION;
543 break;
544 case GLX_LOSE_CONTEXT_ON_RESET_ARB:
545 *reset = __DRI_CTX_RESET_LOSE_CONTEXT;
546 break;
547 default:
548 *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
549 return false;
550 }
551 break;
552 case GLX_CONTEXT_RELEASE_BEHAVIOR_ARB:
553 switch (attribs[i * 2 + 1]) {
554 case GLX_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB:
555 *release = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
556 break;
557 case GLX_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB:
558 *release = __DRI_CTX_RELEASE_BEHAVIOR_FLUSH;
559 break;
560 default:
561 *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
562 return false;
563 }
564 break;
565 default:
566 /* If an unknown attribute is received, fail.
567 */
568 *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
569 return false;
570 }
571 }
572
573 if (!got_profile) {
574 if (*major_ver > 3 || (*major_ver == 3 && *minor_ver >= 2))
575 *api = __DRI_API_OPENGL_CORE;
576 } else {
577 switch (profile) {
578 case GLX_CONTEXT_CORE_PROFILE_BIT_ARB:
579 /* There are no profiles before OpenGL 3.2. The
580 * GLX_ARB_create_context_profile spec says:
581 *
582 * "If the requested OpenGL version is less than 3.2,
583 * GLX_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality
584 * of the context is determined solely by the requested version."
585 */
586 *api = (*major_ver > 3 || (*major_ver == 3 && *minor_ver >= 2))
587 ? __DRI_API_OPENGL_CORE : __DRI_API_OPENGL;
588 break;
589 case GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB:
590 *api = __DRI_API_OPENGL;
591 break;
592 case GLX_CONTEXT_ES_PROFILE_BIT_EXT:
593 if (*major_ver >= 3)
594 *api = __DRI_API_GLES3;
595 else if (*major_ver == 2 && *minor_ver == 0)
596 *api = __DRI_API_GLES2;
597 else if (*major_ver == 1 && *minor_ver < 2)
598 *api = __DRI_API_GLES;
599 else {
600 *error = __DRI_CTX_ERROR_BAD_API;
601 return false;
602 }
603 break;
604 default:
605 *error = __DRI_CTX_ERROR_BAD_API;
606 return false;
607 }
608 }
609
610 /* Unknown flag value.
611 */
612 if (*flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_FORWARD_COMPATIBLE
613 | __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS)) {
614 *error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
615 return false;
616 }
617
618 /* There are no forward-compatible contexts before OpenGL 3.0. The
619 * GLX_ARB_create_context spec says:
620 *
621 * "Forward-compatible contexts are defined only for OpenGL versions
622 * 3.0 and later."
623 */
624 if (*major_ver < 3 && (*flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0) {
625 *error = __DRI_CTX_ERROR_BAD_FLAG;
626 return false;
627 }
628
629 if (*major_ver >= 3 && *render_type == GLX_COLOR_INDEX_TYPE) {
630 *error = __DRI_CTX_ERROR_BAD_FLAG;
631 return false;
632 }
633
634 *error = __DRI_CTX_ERROR_SUCCESS;
635 return true;
636 }
637
638 #endif /* GLX_DIRECT_RENDERING */
639