a4e76c1c3985105ae52b92c4fda5cf5cd63ddcf7
[mesa.git] / src / glx / glxext.c
1 /*
2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
29 */
30
31 /**
32 * \file glxext.c
33 * GLX protocol interface boot-strap code.
34 *
35 * Direct rendering support added by Precision Insight, Inc.
36 *
37 * \author Kevin E. Martin <kevin@precisioninsight.com>
38 */
39
40 #include <assert.h>
41 #include "glxclient.h"
42 #include <X11/extensions/Xext.h>
43 #include <X11/extensions/extutil.h>
44 #ifdef GLX_USE_APPLEGL
45 #include "apple_glx.h"
46 #include "apple_visual.h"
47 #endif
48 #include "glxextensions.h"
49
50 #ifdef USE_XCB
51 #include <X11/Xlib-xcb.h>
52 #include <xcb/xcb.h>
53 #include <xcb/glx.h>
54 #endif
55
56
57 #ifdef DEBUG
58 void __glXDumpDrawBuffer(struct glx_context * ctx);
59 #endif
60
61 /*
62 ** You can set this cell to 1 to force the gl drawing stuff to be
63 ** one command per packet
64 */
65 _X_HIDDEN int __glXDebug = 0;
66
67 /* Extension required boiler plate */
68
69 static const char __glXExtensionName[] = GLX_EXTENSION_NAME;
70 static struct glx_display *glx_displays;
71
72 static /* const */ char *error_list[] = {
73 "GLXBadContext",
74 "GLXBadContextState",
75 "GLXBadDrawable",
76 "GLXBadPixmap",
77 "GLXBadContextTag",
78 "GLXBadCurrentWindow",
79 "GLXBadRenderRequest",
80 "GLXBadLargeRequest",
81 "GLXUnsupportedPrivateRequest",
82 "GLXBadFBConfig",
83 "GLXBadPbuffer",
84 "GLXBadCurrentDrawable",
85 "GLXBadWindow",
86 };
87
88 #ifdef GLX_USE_APPLEGL
89 static char *__glXErrorString(Display *dpy, int code, XExtCodes *codes,
90 char *buf, int n);
91 #endif
92
93 static
94 XEXT_GENERATE_ERROR_STRING(__glXErrorString, __glXExtensionName,
95 __GLX_NUMBER_ERRORS, error_list)
96
97 /*
98 * GLX events are a bit funky. We don't stuff the X event code into
99 * our user exposed (via XNextEvent) structure. Instead we use the GLX
100 * private event code namespace (and hope it doesn't conflict). Clients
101 * have to know that bit 15 in the event type field means they're getting
102 * a GLX event, and then handle the various sub-event types there, rather
103 * than simply checking the event code and handling it directly.
104 */
105
106 static Bool
107 __glXWireToEvent(Display *dpy, XEvent *event, xEvent *wire)
108 {
109 struct glx_display *glx_dpy = __glXInitialize(dpy);
110
111 if (glx_dpy == NULL)
112 return False;
113
114 switch ((wire->u.u.type & 0x7f) - glx_dpy->codes->first_event) {
115 case GLX_PbufferClobber:
116 {
117 GLXPbufferClobberEvent *aevent = (GLXPbufferClobberEvent *)event;
118 xGLXPbufferClobberEvent *awire = (xGLXPbufferClobberEvent *)wire;
119 aevent->event_type = awire->type;
120 aevent->serial = awire->sequenceNumber;
121 aevent->event_type = awire->event_type;
122 aevent->draw_type = awire->draw_type;
123 aevent->drawable = awire->drawable;
124 aevent->buffer_mask = awire->buffer_mask;
125 aevent->aux_buffer = awire->aux_buffer;
126 aevent->x = awire->x;
127 aevent->y = awire->y;
128 aevent->width = awire->width;
129 aevent->height = awire->height;
130 aevent->count = awire->count;
131 return True;
132 }
133 case GLX_BufferSwapComplete:
134 {
135 GLXBufferSwapComplete *aevent = (GLXBufferSwapComplete *)event;
136 xGLXBufferSwapComplete2 *awire = (xGLXBufferSwapComplete2 *)wire;
137 struct glx_drawable *glxDraw = GetGLXDrawable(dpy, awire->drawable);
138 aevent->event_type = awire->event_type;
139 aevent->drawable = awire->drawable;
140 aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
141 aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
142
143 if (!glxDraw)
144 return False;
145
146 if (awire->sbc < glxDraw->lastEventSbc)
147 glxDraw->eventSbcWrap += 0x100000000;
148 glxDraw->lastEventSbc = awire->sbc;
149 aevent->sbc = awire->sbc + glxDraw->eventSbcWrap;
150 return True;
151 }
152 default:
153 /* client doesn't support server event */
154 break;
155 }
156
157 return False;
158 }
159
160 /* We don't actually support this. It doesn't make sense for clients to
161 * send each other GLX events.
162 */
163 static Status
164 __glXEventToWire(Display *dpy, XEvent *event, xEvent *wire)
165 {
166 struct glx_display *glx_dpy = __glXInitialize(dpy);
167
168 if (glx_dpy == NULL)
169 return False;
170
171 switch (event->type) {
172 case GLX_DAMAGED:
173 break;
174 case GLX_SAVED:
175 break;
176 case GLX_EXCHANGE_COMPLETE_INTEL:
177 break;
178 case GLX_COPY_COMPLETE_INTEL:
179 break;
180 case GLX_FLIP_COMPLETE_INTEL:
181 break;
182 default:
183 /* client doesn't support server event */
184 break;
185 }
186
187 return Success;
188 }
189
190 /************************************************************************/
191 /*
192 ** Free the per screen configs data as well as the array of
193 ** __glXScreenConfigs.
194 */
195 static void
196 FreeScreenConfigs(struct glx_display * priv)
197 {
198 struct glx_screen *psc;
199 GLint i, screens;
200
201 /* Free screen configuration information */
202 screens = ScreenCount(priv->dpy);
203 for (i = 0; i < screens; i++) {
204 psc = priv->screens[i];
205 glx_screen_cleanup(psc);
206
207 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
208 if (psc->driScreen) {
209 psc->driScreen->destroyScreen(psc);
210 } else {
211 Xfree(psc);
212 }
213 #else
214 Xfree(psc);
215 #endif
216 }
217 XFree((char *) priv->screens);
218 priv->screens = NULL;
219 }
220
221 static void
222 glx_display_free(struct glx_display *priv)
223 {
224 struct glx_context *gc;
225
226 gc = __glXGetCurrentContext();
227 if (priv->dpy == gc->currentDpy) {
228 gc->vtable->destroy(gc);
229 __glXSetCurrentContextNull();
230 }
231
232 FreeScreenConfigs(priv);
233 if (priv->serverGLXvendor)
234 Xfree((char *) priv->serverGLXvendor);
235 if (priv->serverGLXversion)
236 Xfree((char *) priv->serverGLXversion);
237
238 __glxHashDestroy(priv->glXDrawHash);
239
240 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
241 __glxHashDestroy(priv->drawHash);
242
243 /* Free the direct rendering per display data */
244 if (priv->driswDisplay)
245 (*priv->driswDisplay->destroyDisplay) (priv->driswDisplay);
246 priv->driswDisplay = NULL;
247
248 if (priv->driDisplay)
249 (*priv->driDisplay->destroyDisplay) (priv->driDisplay);
250 priv->driDisplay = NULL;
251
252 if (priv->dri2Display)
253 (*priv->dri2Display->destroyDisplay) (priv->dri2Display);
254 priv->dri2Display = NULL;
255 #endif
256
257 Xfree((char *) priv);
258 }
259
260 static int
261 __glXCloseDisplay(Display * dpy, XExtCodes * codes)
262 {
263 struct glx_display *priv, **prev;
264
265 _XLockMutex(_Xglobal_lock);
266 prev = &glx_displays;
267 for (priv = glx_displays; priv; prev = &priv->next, priv = priv->next) {
268 if (priv->dpy == dpy) {
269 *prev = priv->next;
270 break;
271 }
272 }
273 _XUnlockMutex(_Xglobal_lock);
274
275 glx_display_free(priv);
276
277 return 1;
278 }
279
280 /*
281 ** Query the version of the GLX extension. This procedure works even if
282 ** the client extension is not completely set up.
283 */
284 static Bool
285 QueryVersion(Display * dpy, int opcode, int *major, int *minor)
286 {
287 #ifdef USE_XCB
288 xcb_connection_t *c = XGetXCBConnection(dpy);
289 xcb_glx_query_version_reply_t *reply = xcb_glx_query_version_reply(c,
290 xcb_glx_query_version
291 (c,
292 GLX_MAJOR_VERSION,
293 GLX_MINOR_VERSION),
294 NULL);
295
296 if (!reply)
297 return GL_FALSE;
298
299 if (reply->major_version != GLX_MAJOR_VERSION) {
300 free(reply);
301 return GL_FALSE;
302 }
303 *major = reply->major_version;
304 *minor = min(reply->minor_version, GLX_MINOR_VERSION);
305 free(reply);
306 return GL_TRUE;
307 #else
308 xGLXQueryVersionReq *req;
309 xGLXQueryVersionReply reply;
310
311 /* Send the glXQueryVersion request */
312 LockDisplay(dpy);
313 GetReq(GLXQueryVersion, req);
314 req->reqType = opcode;
315 req->glxCode = X_GLXQueryVersion;
316 req->majorVersion = GLX_MAJOR_VERSION;
317 req->minorVersion = GLX_MINOR_VERSION;
318 _XReply(dpy, (xReply *) & reply, 0, False);
319 UnlockDisplay(dpy);
320 SyncHandle();
321
322 if (reply.majorVersion != GLX_MAJOR_VERSION) {
323 /*
324 ** The server does not support the same major release as this
325 ** client.
326 */
327 return GL_FALSE;
328 }
329 *major = reply.majorVersion;
330 *minor = min(reply.minorVersion, GLX_MINOR_VERSION);
331 return GL_TRUE;
332 #endif /* USE_XCB */
333 }
334
335 /*
336 * We don't want to enable this GLX_OML_swap_method in glxext.h,
337 * because we can't support it. The X server writes it out though,
338 * so we should handle it somehow, to avoid false warnings.
339 */
340 enum {
341 IGNORE_GLX_SWAP_METHOD_OML = 0x8060
342 };
343
344
345 static GLint
346 convert_from_x_visual_type(int visualType)
347 {
348 static const int glx_visual_types[] = {
349 GLX_STATIC_GRAY, GLX_GRAY_SCALE,
350 GLX_STATIC_COLOR, GLX_PSEUDO_COLOR,
351 GLX_TRUE_COLOR, GLX_DIRECT_COLOR
352 };
353
354 if (visualType < ARRAY_SIZE(glx_visual_types))
355 return glx_visual_types[visualType];
356
357 return GLX_NONE;
358 }
359
360 /*
361 * getVisualConfigs uses the !tagged_only path.
362 * getFBConfigs uses the tagged_only path.
363 */
364 _X_HIDDEN void
365 __glXInitializeVisualConfigFromTags(struct glx_config * config, int count,
366 const INT32 * bp, Bool tagged_only,
367 Bool fbconfig_style_tags)
368 {
369 int i;
370
371 if (!tagged_only) {
372 /* Copy in the first set of properties */
373 config->visualID = *bp++;
374
375 config->visualType = convert_from_x_visual_type(*bp++);
376
377 config->rgbMode = *bp++;
378
379 config->redBits = *bp++;
380 config->greenBits = *bp++;
381 config->blueBits = *bp++;
382 config->alphaBits = *bp++;
383 config->accumRedBits = *bp++;
384 config->accumGreenBits = *bp++;
385 config->accumBlueBits = *bp++;
386 config->accumAlphaBits = *bp++;
387
388 config->doubleBufferMode = *bp++;
389 config->stereoMode = *bp++;
390
391 config->rgbBits = *bp++;
392 config->depthBits = *bp++;
393 config->stencilBits = *bp++;
394 config->numAuxBuffers = *bp++;
395 config->level = *bp++;
396
397 #ifdef GLX_USE_APPLEGL
398 /* AppleSGLX supports pixmap and pbuffers with all config. */
399 config->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
400 /* Unfortunately this can create an ABI compatibility problem. */
401 count -= 18;
402 #else
403 count -= __GLX_MIN_CONFIG_PROPS;
404 #endif
405 }
406
407 /*
408 ** Additional properties may be in a list at the end
409 ** of the reply. They are in pairs of property type
410 ** and property value.
411 */
412
413 #define FETCH_OR_SET(tag) \
414 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
415
416 for (i = 0; i < count; i += 2) {
417 long int tag = *bp++;
418
419 switch (tag) {
420 case GLX_RGBA:
421 FETCH_OR_SET(rgbMode);
422 break;
423 case GLX_BUFFER_SIZE:
424 config->rgbBits = *bp++;
425 break;
426 case GLX_LEVEL:
427 config->level = *bp++;
428 break;
429 case GLX_DOUBLEBUFFER:
430 FETCH_OR_SET(doubleBufferMode);
431 break;
432 case GLX_STEREO:
433 FETCH_OR_SET(stereoMode);
434 break;
435 case GLX_AUX_BUFFERS:
436 config->numAuxBuffers = *bp++;
437 break;
438 case GLX_RED_SIZE:
439 config->redBits = *bp++;
440 break;
441 case GLX_GREEN_SIZE:
442 config->greenBits = *bp++;
443 break;
444 case GLX_BLUE_SIZE:
445 config->blueBits = *bp++;
446 break;
447 case GLX_ALPHA_SIZE:
448 config->alphaBits = *bp++;
449 break;
450 case GLX_DEPTH_SIZE:
451 config->depthBits = *bp++;
452 break;
453 case GLX_STENCIL_SIZE:
454 config->stencilBits = *bp++;
455 break;
456 case GLX_ACCUM_RED_SIZE:
457 config->accumRedBits = *bp++;
458 break;
459 case GLX_ACCUM_GREEN_SIZE:
460 config->accumGreenBits = *bp++;
461 break;
462 case GLX_ACCUM_BLUE_SIZE:
463 config->accumBlueBits = *bp++;
464 break;
465 case GLX_ACCUM_ALPHA_SIZE:
466 config->accumAlphaBits = *bp++;
467 break;
468 case GLX_VISUAL_CAVEAT_EXT:
469 config->visualRating = *bp++;
470 break;
471 case GLX_X_VISUAL_TYPE:
472 config->visualType = *bp++;
473 break;
474 case GLX_TRANSPARENT_TYPE:
475 config->transparentPixel = *bp++;
476 break;
477 case GLX_TRANSPARENT_INDEX_VALUE:
478 config->transparentIndex = *bp++;
479 break;
480 case GLX_TRANSPARENT_RED_VALUE:
481 config->transparentRed = *bp++;
482 break;
483 case GLX_TRANSPARENT_GREEN_VALUE:
484 config->transparentGreen = *bp++;
485 break;
486 case GLX_TRANSPARENT_BLUE_VALUE:
487 config->transparentBlue = *bp++;
488 break;
489 case GLX_TRANSPARENT_ALPHA_VALUE:
490 config->transparentAlpha = *bp++;
491 break;
492 case GLX_VISUAL_ID:
493 config->visualID = *bp++;
494 break;
495 case GLX_DRAWABLE_TYPE:
496 config->drawableType = *bp++;
497 #ifdef GLX_USE_APPLEGL
498 /* AppleSGLX supports pixmap and pbuffers with all config. */
499 config->drawableType |= GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
500 #endif
501 break;
502 case GLX_RENDER_TYPE:
503 config->renderType = *bp++;
504 break;
505 case GLX_X_RENDERABLE:
506 config->xRenderable = *bp++;
507 break;
508 case GLX_FBCONFIG_ID:
509 config->fbconfigID = *bp++;
510 break;
511 case GLX_MAX_PBUFFER_WIDTH:
512 config->maxPbufferWidth = *bp++;
513 break;
514 case GLX_MAX_PBUFFER_HEIGHT:
515 config->maxPbufferHeight = *bp++;
516 break;
517 case GLX_MAX_PBUFFER_PIXELS:
518 config->maxPbufferPixels = *bp++;
519 break;
520 #ifndef GLX_USE_APPLEGL
521 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX:
522 config->optimalPbufferWidth = *bp++;
523 break;
524 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX:
525 config->optimalPbufferHeight = *bp++;
526 break;
527 case GLX_VISUAL_SELECT_GROUP_SGIX:
528 config->visualSelectGroup = *bp++;
529 break;
530 case GLX_SWAP_METHOD_OML:
531 config->swapMethod = *bp++;
532 break;
533 #endif
534 case GLX_SAMPLE_BUFFERS_SGIS:
535 config->sampleBuffers = *bp++;
536 break;
537 case GLX_SAMPLES_SGIS:
538 config->samples = *bp++;
539 break;
540 #ifdef GLX_USE_APPLEGL
541 case IGNORE_GLX_SWAP_METHOD_OML:
542 /* We ignore this tag. See the comment above this function. */
543 ++bp;
544 break;
545 #else
546 case GLX_BIND_TO_TEXTURE_RGB_EXT:
547 config->bindToTextureRgb = *bp++;
548 break;
549 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
550 config->bindToTextureRgba = *bp++;
551 break;
552 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
553 config->bindToMipmapTexture = *bp++;
554 break;
555 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
556 config->bindToTextureTargets = *bp++;
557 break;
558 case GLX_Y_INVERTED_EXT:
559 config->yInverted = *bp++;
560 break;
561 #endif
562 case GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT:
563 config->sRGBCapable = *bp++;
564 break;
565
566 case GLX_USE_GL:
567 if (fbconfig_style_tags)
568 bp++;
569 break;
570 case None:
571 i = count;
572 break;
573 default:
574 if(getenv("LIBGL_DIAGNOSTIC")) {
575 long int tagvalue = *bp++;
576 fprintf(stderr, "WARNING: unknown GLX tag from server: "
577 "tag 0x%lx value 0x%lx\n", tag, tagvalue);
578 } else {
579 /* Ignore the unrecognized tag's value */
580 bp++;
581 }
582 break;
583 }
584 }
585
586 config->renderType =
587 (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
588 }
589
590 static struct glx_config *
591 createConfigsFromProperties(Display * dpy, int nvisuals, int nprops,
592 int screen, GLboolean tagged_only)
593 {
594 INT32 buf[__GLX_TOTAL_CONFIG], *props;
595 unsigned prop_size;
596 struct glx_config *modes, *m;
597 int i;
598
599 if (nprops == 0)
600 return NULL;
601
602 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
603
604 /* Check number of properties */
605 if (nprops < __GLX_MIN_CONFIG_PROPS || nprops > __GLX_MAX_CONFIG_PROPS)
606 return NULL;
607
608 /* Allocate memory for our config structure */
609 modes = glx_config_create_list(nvisuals);
610 if (!modes)
611 return NULL;
612
613 prop_size = nprops * __GLX_SIZE_INT32;
614 if (prop_size <= sizeof(buf))
615 props = buf;
616 else
617 props = Xmalloc(prop_size);
618
619 /* Read each config structure and convert it into our format */
620 m = modes;
621 for (i = 0; i < nvisuals; i++) {
622 _XRead(dpy, (char *) props, prop_size);
623 #ifdef GLX_USE_APPLEGL
624 /* Older X servers don't send this so we default it here. */
625 m->drawableType = GLX_WINDOW_BIT;
626 #else
627 /*
628 * The XQuartz 2.3.2.1 X server doesn't set this properly, so
629 * set the proper bits here.
630 * AppleSGLX supports windows, pixmaps, and pbuffers with all config.
631 */
632 m->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
633 #endif
634 __glXInitializeVisualConfigFromTags(m, nprops, props,
635 tagged_only, GL_TRUE);
636 m->screen = screen;
637 m = m->next;
638 }
639
640 if (props != buf)
641 Xfree(props);
642
643 return modes;
644 }
645
646 static GLboolean
647 getVisualConfigs(struct glx_screen *psc,
648 struct glx_display *priv, int screen)
649 {
650 xGLXGetVisualConfigsReq *req;
651 xGLXGetVisualConfigsReply reply;
652 Display *dpy = priv->dpy;
653
654 LockDisplay(dpy);
655
656 psc->visuals = NULL;
657 GetReq(GLXGetVisualConfigs, req);
658 req->reqType = priv->majorOpcode;
659 req->glxCode = X_GLXGetVisualConfigs;
660 req->screen = screen;
661
662 if (!_XReply(dpy, (xReply *) & reply, 0, False))
663 goto out;
664
665 psc->visuals = createConfigsFromProperties(dpy,
666 reply.numVisuals,
667 reply.numProps,
668 screen, GL_FALSE);
669
670 out:
671 UnlockDisplay(dpy);
672 return psc->visuals != NULL;
673 }
674
675 static GLboolean
676 getFBConfigs(struct glx_screen *psc, struct glx_display *priv, int screen)
677 {
678 xGLXGetFBConfigsReq *fb_req;
679 xGLXGetFBConfigsSGIXReq *sgi_req;
680 xGLXVendorPrivateWithReplyReq *vpreq;
681 xGLXGetFBConfigsReply reply;
682 Display *dpy = priv->dpy;
683
684 psc->serverGLXexts =
685 __glXQueryServerString(dpy, priv->majorOpcode, screen, GLX_EXTENSIONS);
686
687 LockDisplay(dpy);
688
689 psc->configs = NULL;
690 if (atof(priv->serverGLXversion) >= 1.3) {
691 GetReq(GLXGetFBConfigs, fb_req);
692 fb_req->reqType = priv->majorOpcode;
693 fb_req->glxCode = X_GLXGetFBConfigs;
694 fb_req->screen = screen;
695 }
696 else if (strstr(psc->serverGLXexts, "GLX_SGIX_fbconfig") != NULL) {
697 GetReqExtra(GLXVendorPrivateWithReply,
698 sz_xGLXGetFBConfigsSGIXReq -
699 sz_xGLXVendorPrivateWithReplyReq, vpreq);
700 sgi_req = (xGLXGetFBConfigsSGIXReq *) vpreq;
701 sgi_req->reqType = priv->majorOpcode;
702 sgi_req->glxCode = X_GLXVendorPrivateWithReply;
703 sgi_req->vendorCode = X_GLXvop_GetFBConfigsSGIX;
704 sgi_req->screen = screen;
705 }
706 else
707 goto out;
708
709 if (!_XReply(dpy, (xReply *) & reply, 0, False))
710 goto out;
711
712 psc->configs = createConfigsFromProperties(dpy,
713 reply.numFBConfigs,
714 reply.numAttribs * 2,
715 screen, GL_TRUE);
716
717 out:
718 UnlockDisplay(dpy);
719 return psc->configs != NULL;
720 }
721
722 _X_HIDDEN Bool
723 glx_screen_init(struct glx_screen *psc,
724 int screen, struct glx_display * priv)
725 {
726 /* Initialize per screen dynamic client GLX extensions */
727 psc->ext_list_first_time = GL_TRUE;
728 psc->scr = screen;
729 psc->dpy = priv->dpy;
730 psc->display = priv;
731
732 getVisualConfigs(psc, priv, screen);
733 getFBConfigs(psc, priv, screen);
734
735 return GL_TRUE;
736 }
737
738 _X_HIDDEN void
739 glx_screen_cleanup(struct glx_screen *psc)
740 {
741 if (psc->configs) {
742 glx_config_destroy_list(psc->configs);
743 if (psc->effectiveGLXexts)
744 Xfree(psc->effectiveGLXexts);
745 psc->configs = NULL; /* NOTE: just for paranoia */
746 }
747 if (psc->visuals) {
748 glx_config_destroy_list(psc->visuals);
749 psc->visuals = NULL; /* NOTE: just for paranoia */
750 }
751 Xfree((char *) psc->serverGLXexts);
752 }
753
754 /*
755 ** Allocate the memory for the per screen configs for each screen.
756 ** If that works then fetch the per screen configs data.
757 */
758 static Bool
759 AllocAndFetchScreenConfigs(Display * dpy, struct glx_display * priv)
760 {
761 struct glx_screen *psc;
762 GLint i, screens;
763
764 /*
765 ** First allocate memory for the array of per screen configs.
766 */
767 screens = ScreenCount(dpy);
768 priv->screens = Xmalloc(screens * sizeof *priv->screens);
769 if (!priv->screens)
770 return GL_FALSE;
771
772 priv->serverGLXversion =
773 __glXQueryServerString(dpy, priv->majorOpcode, 0, GLX_VERSION);
774 if (priv->serverGLXversion == NULL) {
775 FreeScreenConfigs(priv);
776 return GL_FALSE;
777 }
778
779 for (i = 0; i < screens; i++, psc++) {
780 psc = NULL;
781 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
782 if (priv->dri2Display)
783 psc = (*priv->dri2Display->createScreen) (i, priv);
784 if (psc == NULL && priv->driDisplay)
785 psc = (*priv->driDisplay->createScreen) (i, priv);
786 if (psc == NULL && priv->driswDisplay)
787 psc = (*priv->driswDisplay->createScreen) (i, priv);
788 #endif
789 #if defined(GLX_USE_APPLEGL)
790 if (psc == NULL)
791 psc = applegl_create_screen(i, priv);
792 #else
793 if (psc == NULL)
794 psc = indirect_create_screen(i, priv);
795 #endif
796 priv->screens[i] = psc;
797 }
798 SyncHandle();
799 return GL_TRUE;
800 }
801
802 /*
803 ** Initialize the client side extension code.
804 */
805 _X_HIDDEN struct glx_display *
806 __glXInitialize(Display * dpy)
807 {
808 struct glx_display *dpyPriv, *d;
809 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
810 Bool glx_direct, glx_accel;
811 #endif
812 int i;
813
814 _XLockMutex(_Xglobal_lock);
815
816 for (dpyPriv = glx_displays; dpyPriv; dpyPriv = dpyPriv->next) {
817 if (dpyPriv->dpy == dpy) {
818 _XUnlockMutex(_Xglobal_lock);
819 return dpyPriv;
820 }
821 }
822
823 /* Drop the lock while we create the display private. */
824 _XUnlockMutex(_Xglobal_lock);
825
826 dpyPriv = Xcalloc(1, sizeof *dpyPriv);
827 if (!dpyPriv)
828 return NULL;
829
830 dpyPriv->codes = XInitExtension(dpy, __glXExtensionName);
831 if (!dpyPriv->codes) {
832 Xfree(dpyPriv);
833 _XUnlockMutex(_Xglobal_lock);
834 return NULL;
835 }
836
837 dpyPriv->dpy = dpy;
838 dpyPriv->majorOpcode = dpyPriv->codes->major_opcode;
839 dpyPriv->serverGLXvendor = 0x0;
840 dpyPriv->serverGLXversion = 0x0;
841
842 /* See if the versions are compatible. This GLX implementation does not
843 * work with servers that only support GLX 1.0.
844 */
845 if (!QueryVersion(dpy, dpyPriv->majorOpcode,
846 &dpyPriv->majorVersion, &dpyPriv->minorVersion)
847 || (dpyPriv->majorVersion == 1 && dpyPriv->minorVersion < 1)) {
848 Xfree(dpyPriv);
849 _XUnlockMutex(_Xglobal_lock);
850 return NULL;
851 }
852
853 for (i = 0; i < __GLX_NUMBER_EVENTS; i++) {
854 XESetWireToEvent(dpy, dpyPriv->codes->first_event + i, __glXWireToEvent);
855 XESetEventToWire(dpy, dpyPriv->codes->first_event + i, __glXEventToWire);
856 }
857
858 XESetCloseDisplay(dpy, dpyPriv->codes->extension, __glXCloseDisplay);
859 XESetErrorString (dpy, dpyPriv->codes->extension,__glXErrorString);
860
861 dpyPriv->glXDrawHash = __glxHashCreate();
862
863 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
864 glx_direct = (getenv("LIBGL_ALWAYS_INDIRECT") == NULL);
865 glx_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
866
867 dpyPriv->drawHash = __glxHashCreate();
868
869 /*
870 ** Initialize the direct rendering per display data and functions.
871 ** Note: This _must_ be done before calling any other DRI routines
872 ** (e.g., those called in AllocAndFetchScreenConfigs).
873 */
874 if (glx_direct && glx_accel) {
875 dpyPriv->dri2Display = dri2CreateDisplay(dpy);
876 dpyPriv->driDisplay = driCreateDisplay(dpy);
877 }
878 if (glx_direct)
879 dpyPriv->driswDisplay = driswCreateDisplay(dpy);
880 #endif
881
882 #ifdef GLX_USE_APPLEGL
883 if (!applegl_create_display(dpyPriv)) {
884 Xfree(dpyPriv);
885 return NULL;
886 }
887 #endif
888 if (!AllocAndFetchScreenConfigs(dpy, dpyPriv)) {
889 Xfree(dpyPriv);
890 return NULL;
891 }
892
893 #ifdef USE_XCB
894 __glX_send_client_info(dpyPriv);
895 #else
896 __glXClientInfo(dpy, dpyPriv->majorOpcode);
897 #endif
898
899 /* Grab the lock again and add the dispay private, unless somebody
900 * beat us to initializing on this display in the meantime. */
901 _XLockMutex(_Xglobal_lock);
902
903 for (d = glx_displays; d; d = d->next) {
904 if (d->dpy == dpy) {
905 _XUnlockMutex(_Xglobal_lock);
906 glx_display_free(dpyPriv);
907 return d;
908 }
909 }
910
911 dpyPriv->next = glx_displays;
912 glx_displays = dpyPriv;
913
914 _XUnlockMutex(_Xglobal_lock);
915
916 return dpyPriv;
917 }
918
919 /*
920 ** Setup for sending a GLX command on dpy. Make sure the extension is
921 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
922 */
923 _X_HIDDEN CARD8
924 __glXSetupForCommand(Display * dpy)
925 {
926 struct glx_context *gc;
927 struct glx_display *priv;
928
929 /* If this thread has a current context, flush its rendering commands */
930 gc = __glXGetCurrentContext();
931 if (gc->currentDpy) {
932 /* Flush rendering buffer of the current context, if any */
933 (void) __glXFlushRenderBuffer(gc, gc->pc);
934
935 if (gc->currentDpy == dpy) {
936 /* Use opcode from gc because its right */
937 return gc->majorOpcode;
938 }
939 else {
940 /*
941 ** Have to get info about argument dpy because it might be to
942 ** a different server
943 */
944 }
945 }
946
947 /* Forced to lookup extension via the slow initialize route */
948 priv = __glXInitialize(dpy);
949 if (!priv) {
950 return 0;
951 }
952 return priv->majorOpcode;
953 }
954
955 /**
956 * Flush the drawing command transport buffer.
957 *
958 * \param ctx Context whose transport buffer is to be flushed.
959 * \param pc Pointer to first unused buffer location.
960 *
961 * \todo
962 * Modify this function to use \c ctx->pc instead of the explicit
963 * \c pc parameter.
964 */
965 _X_HIDDEN GLubyte *
966 __glXFlushRenderBuffer(struct glx_context * ctx, GLubyte * pc)
967 {
968 Display *const dpy = ctx->currentDpy;
969 #ifdef USE_XCB
970 xcb_connection_t *c = XGetXCBConnection(dpy);
971 #else
972 xGLXRenderReq *req;
973 #endif /* USE_XCB */
974 const GLint size = pc - ctx->buf;
975
976 if ((dpy != NULL) && (size > 0)) {
977 #ifdef USE_XCB
978 xcb_glx_render(c, ctx->currentContextTag, size,
979 (const uint8_t *) ctx->buf);
980 #else
981 /* Send the entire buffer as an X request */
982 LockDisplay(dpy);
983 GetReq(GLXRender, req);
984 req->reqType = ctx->majorOpcode;
985 req->glxCode = X_GLXRender;
986 req->contextTag = ctx->currentContextTag;
987 req->length += (size + 3) >> 2;
988 _XSend(dpy, (char *) ctx->buf, size);
989 UnlockDisplay(dpy);
990 SyncHandle();
991 #endif
992 }
993
994 /* Reset pointer and return it */
995 ctx->pc = ctx->buf;
996 return ctx->pc;
997 }
998
999
1000 /**
1001 * Send a portion of a GLXRenderLarge command to the server. The advantage of
1002 * this function over \c __glXSendLargeCommand is that callers can use the
1003 * data buffer in the GLX context and may be able to avoid allocating an
1004 * extra buffer. The disadvantage is the clients will have to do more
1005 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
1006 *
1007 * \sa __glXSendLargeCommand
1008 *
1009 * \param gc GLX context
1010 * \param requestNumber Which part of the whole command is this? The first
1011 * request is 1.
1012 * \param totalRequests How many requests will there be?
1013 * \param data Command data.
1014 * \param dataLen Size, in bytes, of the command data.
1015 */
1016 _X_HIDDEN void
1017 __glXSendLargeChunk(struct glx_context * gc, GLint requestNumber,
1018 GLint totalRequests, const GLvoid * data, GLint dataLen)
1019 {
1020 Display *dpy = gc->currentDpy;
1021 #ifdef USE_XCB
1022 xcb_connection_t *c = XGetXCBConnection(dpy);
1023 xcb_glx_render_large(c, gc->currentContextTag, requestNumber,
1024 totalRequests, dataLen, data);
1025 #else
1026 xGLXRenderLargeReq *req;
1027
1028 if (requestNumber == 1) {
1029 LockDisplay(dpy);
1030 }
1031
1032 GetReq(GLXRenderLarge, req);
1033 req->reqType = gc->majorOpcode;
1034 req->glxCode = X_GLXRenderLarge;
1035 req->contextTag = gc->currentContextTag;
1036 req->length += (dataLen + 3) >> 2;
1037 req->requestNumber = requestNumber;
1038 req->requestTotal = totalRequests;
1039 req->dataBytes = dataLen;
1040 Data(dpy, data, dataLen);
1041
1042 if (requestNumber == totalRequests) {
1043 UnlockDisplay(dpy);
1044 SyncHandle();
1045 }
1046 #endif /* USE_XCB */
1047 }
1048
1049
1050 /**
1051 * Send a command that is too large for the GLXRender protocol request.
1052 *
1053 * Send a large command, one that is too large for some reason to
1054 * send using the GLXRender protocol request. One reason to send
1055 * a large command is to avoid copying the data.
1056 *
1057 * \param ctx GLX context
1058 * \param header Header data.
1059 * \param headerLen Size, in bytes, of the header data. It is assumed that
1060 * the header data will always be small enough to fit in
1061 * a single X protocol packet.
1062 * \param data Command data.
1063 * \param dataLen Size, in bytes, of the command data.
1064 */
1065 _X_HIDDEN void
1066 __glXSendLargeCommand(struct glx_context * ctx,
1067 const GLvoid * header, GLint headerLen,
1068 const GLvoid * data, GLint dataLen)
1069 {
1070 GLint maxSize;
1071 GLint totalRequests, requestNumber;
1072
1073 /*
1074 ** Calculate the maximum amount of data can be stuffed into a single
1075 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1076 ** packet size minus sz_xGLXRenderReq.
1077 */
1078 maxSize = (ctx->bufSize + sz_xGLXRenderReq) - sz_xGLXRenderLargeReq;
1079 totalRequests = 1 + (dataLen / maxSize);
1080 if (dataLen % maxSize)
1081 totalRequests++;
1082
1083 /*
1084 ** Send all of the command, except the large array, as one request.
1085 */
1086 assert(headerLen <= maxSize);
1087 __glXSendLargeChunk(ctx, 1, totalRequests, header, headerLen);
1088
1089 /*
1090 ** Send enough requests until the whole array is sent.
1091 */
1092 for (requestNumber = 2; requestNumber <= (totalRequests - 1);
1093 requestNumber++) {
1094 __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, maxSize);
1095 data = (const GLvoid *) (((const GLubyte *) data) + maxSize);
1096 dataLen -= maxSize;
1097 assert(dataLen > 0);
1098 }
1099
1100 assert(dataLen <= maxSize);
1101 __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, dataLen);
1102 }
1103
1104 /************************************************************************/
1105
1106 #ifdef DEBUG
1107 _X_HIDDEN void
1108 __glXDumpDrawBuffer(struct glx_context * ctx)
1109 {
1110 GLubyte *p = ctx->buf;
1111 GLubyte *end = ctx->pc;
1112 GLushort opcode, length;
1113
1114 while (p < end) {
1115 /* Fetch opcode */
1116 opcode = *((GLushort *) p);
1117 length = *((GLushort *) (p + 2));
1118 printf("%2x: %5d: ", opcode, length);
1119 length -= 4;
1120 p += 4;
1121 while (length > 0) {
1122 printf("%08x ", *((unsigned *) p));
1123 p += 4;
1124 length -= 4;
1125 }
1126 printf("\n");
1127 }
1128 }
1129 #endif