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 "GLXBadProfileARB",
87 };
88
89 #ifdef GLX_USE_APPLEGL
90 static char *__glXErrorString(Display *dpy, int code, XExtCodes *codes,
91 char *buf, int n);
92 #endif
93
94 static
XEXT_GENERATE_ERROR_STRING(__glXErrorString,__glXExtensionName,__GLX_NUMBER_ERRORS,error_list)95 XEXT_GENERATE_ERROR_STRING(__glXErrorString, __glXExtensionName,
96 __GLX_NUMBER_ERRORS, error_list)
97
98 /*
99 * GLX events are a bit funky. We don't stuff the X event code into
100 * our user exposed (via XNextEvent) structure. Instead we use the GLX
101 * private event code namespace (and hope it doesn't conflict). Clients
102 * have to know that bit 15 in the event type field means they're getting
103 * a GLX event, and then handle the various sub-event types there, rather
104 * than simply checking the event code and handling it directly.
105 */
106
107 static Bool
108 __glXWireToEvent(Display *dpy, XEvent *event, xEvent *wire)
109 {
110 struct glx_display *glx_dpy = __glXInitialize(dpy);
111
112 if (glx_dpy == NULL)
113 return False;
114
115 switch ((wire->u.u.type & 0x7f) - glx_dpy->codes->first_event) {
116 case GLX_PbufferClobber:
117 {
118 GLXPbufferClobberEvent *aevent = (GLXPbufferClobberEvent *)event;
119 xGLXPbufferClobberEvent *awire = (xGLXPbufferClobberEvent *)wire;
120 aevent->event_type = awire->type;
121 aevent->serial = awire->sequenceNumber;
122 aevent->event_type = awire->event_type;
123 aevent->draw_type = awire->draw_type;
124 aevent->drawable = awire->drawable;
125 aevent->buffer_mask = awire->buffer_mask;
126 aevent->aux_buffer = awire->aux_buffer;
127 aevent->x = awire->x;
128 aevent->y = awire->y;
129 aevent->width = awire->width;
130 aevent->height = awire->height;
131 aevent->count = awire->count;
132 return True;
133 }
134 case GLX_BufferSwapComplete:
135 {
136 GLXBufferSwapComplete *aevent = (GLXBufferSwapComplete *)event;
137 xGLXBufferSwapComplete2 *awire = (xGLXBufferSwapComplete2 *)wire;
138 struct glx_drawable *glxDraw = GetGLXDrawable(dpy, awire->drawable);
139 aevent->event_type = awire->event_type;
140 aevent->drawable = awire->drawable;
141 aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
142 aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
143
144 if (!glxDraw)
145 return False;
146
147 if (awire->sbc < glxDraw->lastEventSbc)
148 glxDraw->eventSbcWrap += 0x100000000;
149 glxDraw->lastEventSbc = awire->sbc;
150 aevent->sbc = awire->sbc + glxDraw->eventSbcWrap;
151 return True;
152 }
153 default:
154 /* client doesn't support server event */
155 break;
156 }
157
158 return False;
159 }
160
161 /* We don't actually support this. It doesn't make sense for clients to
162 * send each other GLX events.
163 */
164 static Status
__glXEventToWire(Display * dpy,XEvent * event,xEvent * wire)165 __glXEventToWire(Display *dpy, XEvent *event, xEvent *wire)
166 {
167 struct glx_display *glx_dpy = __glXInitialize(dpy);
168
169 if (glx_dpy == NULL)
170 return False;
171
172 switch (event->type) {
173 case GLX_DAMAGED:
174 break;
175 case GLX_SAVED:
176 break;
177 case GLX_EXCHANGE_COMPLETE_INTEL:
178 break;
179 case GLX_COPY_COMPLETE_INTEL:
180 break;
181 case GLX_FLIP_COMPLETE_INTEL:
182 break;
183 default:
184 /* client doesn't support server event */
185 break;
186 }
187
188 return Success;
189 }
190
191 /************************************************************************/
192 /*
193 ** Free the per screen configs data as well as the array of
194 ** __glXScreenConfigs.
195 */
196 static void
FreeScreenConfigs(struct glx_display * priv)197 FreeScreenConfigs(struct glx_display * priv)
198 {
199 struct glx_screen *psc;
200 GLint i, screens;
201
202 /* Free screen configuration information */
203 screens = ScreenCount(priv->dpy);
204 for (i = 0; i < screens; i++) {
205 psc = priv->screens[i];
206 glx_screen_cleanup(psc);
207
208 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
209 if (psc->driScreen) {
210 psc->driScreen->destroyScreen(psc);
211 } else {
212 Xfree(psc);
213 }
214 #else
215 Xfree(psc);
216 #endif
217 }
218 XFree((char *) priv->screens);
219 priv->screens = NULL;
220 }
221
222 static void
glx_display_free(struct glx_display * priv)223 glx_display_free(struct glx_display *priv)
224 {
225 struct glx_context *gc;
226
227 gc = __glXGetCurrentContext();
228 if (priv->dpy == gc->currentDpy) {
229 gc->vtable->destroy(gc);
230 __glXSetCurrentContextNull();
231 }
232
233 FreeScreenConfigs(priv);
234 if (priv->serverGLXvendor)
235 Xfree((char *) priv->serverGLXvendor);
236 if (priv->serverGLXversion)
237 Xfree((char *) priv->serverGLXversion);
238
239 __glxHashDestroy(priv->glXDrawHash);
240
241 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
242 __glxHashDestroy(priv->drawHash);
243
244 /* Free the direct rendering per display data */
245 if (priv->driswDisplay)
246 (*priv->driswDisplay->destroyDisplay) (priv->driswDisplay);
247 priv->driswDisplay = NULL;
248
249 if (priv->driDisplay)
250 (*priv->driDisplay->destroyDisplay) (priv->driDisplay);
251 priv->driDisplay = NULL;
252
253 if (priv->dri2Display)
254 (*priv->dri2Display->destroyDisplay) (priv->dri2Display);
255 priv->dri2Display = NULL;
256 #endif
257
258 Xfree((char *) priv);
259 }
260
261 static int
__glXCloseDisplay(Display * dpy,XExtCodes * codes)262 __glXCloseDisplay(Display * dpy, XExtCodes * codes)
263 {
264 struct glx_display *priv, **prev;
265
266 _XLockMutex(_Xglobal_lock);
267 prev = &glx_displays;
268 for (priv = glx_displays; priv; prev = &priv->next, priv = priv->next) {
269 if (priv->dpy == dpy) {
270 *prev = priv->next;
271 break;
272 }
273 }
274 _XUnlockMutex(_Xglobal_lock);
275
276 glx_display_free(priv);
277
278 return 1;
279 }
280
281 /*
282 ** Query the version of the GLX extension. This procedure works even if
283 ** the client extension is not completely set up.
284 */
285 static Bool
QueryVersion(Display * dpy,int opcode,int * major,int * minor)286 QueryVersion(Display * dpy, int opcode, int *major, int *minor)
287 {
288 #ifdef USE_XCB
289 xcb_connection_t *c = XGetXCBConnection(dpy);
290 xcb_glx_query_version_reply_t *reply = xcb_glx_query_version_reply(c,
291 xcb_glx_query_version
292 (c,
293 GLX_MAJOR_VERSION,
294 GLX_MINOR_VERSION),
295 NULL);
296
297 if (!reply)
298 return GL_FALSE;
299
300 if (reply->major_version != GLX_MAJOR_VERSION) {
301 free(reply);
302 return GL_FALSE;
303 }
304 *major = reply->major_version;
305 *minor = min(reply->minor_version, GLX_MINOR_VERSION);
306 free(reply);
307 return GL_TRUE;
308 #else
309 xGLXQueryVersionReq *req;
310 xGLXQueryVersionReply reply;
311
312 /* Send the glXQueryVersion request */
313 LockDisplay(dpy);
314 GetReq(GLXQueryVersion, req);
315 req->reqType = opcode;
316 req->glxCode = X_GLXQueryVersion;
317 req->majorVersion = GLX_MAJOR_VERSION;
318 req->minorVersion = GLX_MINOR_VERSION;
319 _XReply(dpy, (xReply *) & reply, 0, False);
320 UnlockDisplay(dpy);
321 SyncHandle();
322
323 if (reply.majorVersion != GLX_MAJOR_VERSION) {
324 /*
325 ** The server does not support the same major release as this
326 ** client.
327 */
328 return GL_FALSE;
329 }
330 *major = reply.majorVersion;
331 *minor = min(reply.minorVersion, GLX_MINOR_VERSION);
332 return GL_TRUE;
333 #endif /* USE_XCB */
334 }
335
336 /*
337 * We don't want to enable this GLX_OML_swap_method in glxext.h,
338 * because we can't support it. The X server writes it out though,
339 * so we should handle it somehow, to avoid false warnings.
340 */
341 enum {
342 IGNORE_GLX_SWAP_METHOD_OML = 0x8060
343 };
344
345
346 static GLint
convert_from_x_visual_type(int visualType)347 convert_from_x_visual_type(int visualType)
348 {
349 static const int glx_visual_types[] = {
350 GLX_STATIC_GRAY, GLX_GRAY_SCALE,
351 GLX_STATIC_COLOR, GLX_PSEUDO_COLOR,
352 GLX_TRUE_COLOR, GLX_DIRECT_COLOR
353 };
354
355 if (visualType < ARRAY_SIZE(glx_visual_types))
356 return glx_visual_types[visualType];
357
358 return GLX_NONE;
359 }
360
361 /*
362 * getVisualConfigs uses the !tagged_only path.
363 * getFBConfigs uses the tagged_only path.
364 */
365 _X_HIDDEN void
__glXInitializeVisualConfigFromTags(struct glx_config * config,int count,const INT32 * bp,Bool tagged_only,Bool fbconfig_style_tags)366 __glXInitializeVisualConfigFromTags(struct glx_config * config, int count,
367 const INT32 * bp, Bool tagged_only,
368 Bool fbconfig_style_tags)
369 {
370 int i;
371
372 if (!tagged_only) {
373 /* Copy in the first set of properties */
374 config->visualID = *bp++;
375
376 config->visualType = convert_from_x_visual_type(*bp++);
377
378 config->rgbMode = *bp++;
379
380 config->redBits = *bp++;
381 config->greenBits = *bp++;
382 config->blueBits = *bp++;
383 config->alphaBits = *bp++;
384 config->accumRedBits = *bp++;
385 config->accumGreenBits = *bp++;
386 config->accumBlueBits = *bp++;
387 config->accumAlphaBits = *bp++;
388
389 config->doubleBufferMode = *bp++;
390 config->stereoMode = *bp++;
391
392 config->rgbBits = *bp++;
393 config->depthBits = *bp++;
394 config->stencilBits = *bp++;
395 config->numAuxBuffers = *bp++;
396 config->level = *bp++;
397
398 #ifdef GLX_USE_APPLEGL
399 /* AppleSGLX supports pixmap and pbuffers with all config. */
400 config->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
401 /* Unfortunately this can create an ABI compatibility problem. */
402 count -= 18;
403 #else
404 count -= __GLX_MIN_CONFIG_PROPS;
405 #endif
406 }
407
408 config->sRGBCapable = GL_FALSE;
409
410 /*
411 ** Additional properties may be in a list at the end
412 ** of the reply. They are in pairs of property type
413 ** and property value.
414 */
415
416 #define FETCH_OR_SET(tag) \
417 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
418
419 for (i = 0; i < count; i += 2) {
420 long int tag = *bp++;
421
422 switch (tag) {
423 case GLX_RGBA:
424 FETCH_OR_SET(rgbMode);
425 break;
426 case GLX_BUFFER_SIZE:
427 config->rgbBits = *bp++;
428 break;
429 case GLX_LEVEL:
430 config->level = *bp++;
431 break;
432 case GLX_DOUBLEBUFFER:
433 FETCH_OR_SET(doubleBufferMode);
434 break;
435 case GLX_STEREO:
436 FETCH_OR_SET(stereoMode);
437 break;
438 case GLX_AUX_BUFFERS:
439 config->numAuxBuffers = *bp++;
440 break;
441 case GLX_RED_SIZE:
442 config->redBits = *bp++;
443 break;
444 case GLX_GREEN_SIZE:
445 config->greenBits = *bp++;
446 break;
447 case GLX_BLUE_SIZE:
448 config->blueBits = *bp++;
449 break;
450 case GLX_ALPHA_SIZE:
451 config->alphaBits = *bp++;
452 break;
453 case GLX_DEPTH_SIZE:
454 config->depthBits = *bp++;
455 break;
456 case GLX_STENCIL_SIZE:
457 config->stencilBits = *bp++;
458 break;
459 case GLX_ACCUM_RED_SIZE:
460 config->accumRedBits = *bp++;
461 break;
462 case GLX_ACCUM_GREEN_SIZE:
463 config->accumGreenBits = *bp++;
464 break;
465 case GLX_ACCUM_BLUE_SIZE:
466 config->accumBlueBits = *bp++;
467 break;
468 case GLX_ACCUM_ALPHA_SIZE:
469 config->accumAlphaBits = *bp++;
470 break;
471 case GLX_VISUAL_CAVEAT_EXT:
472 config->visualRating = *bp++;
473 break;
474 case GLX_X_VISUAL_TYPE:
475 config->visualType = *bp++;
476 break;
477 case GLX_TRANSPARENT_TYPE:
478 config->transparentPixel = *bp++;
479 break;
480 case GLX_TRANSPARENT_INDEX_VALUE:
481 config->transparentIndex = *bp++;
482 break;
483 case GLX_TRANSPARENT_RED_VALUE:
484 config->transparentRed = *bp++;
485 break;
486 case GLX_TRANSPARENT_GREEN_VALUE:
487 config->transparentGreen = *bp++;
488 break;
489 case GLX_TRANSPARENT_BLUE_VALUE:
490 config->transparentBlue = *bp++;
491 break;
492 case GLX_TRANSPARENT_ALPHA_VALUE:
493 config->transparentAlpha = *bp++;
494 break;
495 case GLX_VISUAL_ID:
496 config->visualID = *bp++;
497 break;
498 case GLX_DRAWABLE_TYPE:
499 config->drawableType = *bp++;
500 #ifdef GLX_USE_APPLEGL
501 /* AppleSGLX supports pixmap and pbuffers with all config. */
502 config->drawableType |= GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
503 #endif
504 break;
505 case GLX_RENDER_TYPE:
506 config->renderType = *bp++;
507 break;
508 case GLX_X_RENDERABLE:
509 config->xRenderable = *bp++;
510 break;
511 case GLX_FBCONFIG_ID:
512 config->fbconfigID = *bp++;
513 break;
514 case GLX_MAX_PBUFFER_WIDTH:
515 config->maxPbufferWidth = *bp++;
516 break;
517 case GLX_MAX_PBUFFER_HEIGHT:
518 config->maxPbufferHeight = *bp++;
519 break;
520 case GLX_MAX_PBUFFER_PIXELS:
521 config->maxPbufferPixels = *bp++;
522 break;
523 #ifndef GLX_USE_APPLEGL
524 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX:
525 config->optimalPbufferWidth = *bp++;
526 break;
527 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX:
528 config->optimalPbufferHeight = *bp++;
529 break;
530 case GLX_VISUAL_SELECT_GROUP_SGIX:
531 config->visualSelectGroup = *bp++;
532 break;
533 case GLX_SWAP_METHOD_OML:
534 config->swapMethod = *bp++;
535 break;
536 #endif
537 case GLX_SAMPLE_BUFFERS_SGIS:
538 config->sampleBuffers = *bp++;
539 break;
540 case GLX_SAMPLES_SGIS:
541 config->samples = *bp++;
542 break;
543 #ifdef GLX_USE_APPLEGL
544 case IGNORE_GLX_SWAP_METHOD_OML:
545 /* We ignore this tag. See the comment above this function. */
546 ++bp;
547 break;
548 #else
549 case GLX_BIND_TO_TEXTURE_RGB_EXT:
550 config->bindToTextureRgb = *bp++;
551 break;
552 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
553 config->bindToTextureRgba = *bp++;
554 break;
555 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
556 config->bindToMipmapTexture = *bp++;
557 break;
558 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
559 config->bindToTextureTargets = *bp++;
560 break;
561 case GLX_Y_INVERTED_EXT:
562 config->yInverted = *bp++;
563 break;
564 #endif
565 case GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT:
566 config->sRGBCapable = *bp++;
567 break;
568
569 case GLX_USE_GL:
570 if (fbconfig_style_tags)
571 bp++;
572 break;
573 case None:
574 i = count;
575 break;
576 default:
577 if(getenv("LIBGL_DIAGNOSTIC")) {
578 long int tagvalue = *bp++;
579 fprintf(stderr, "WARNING: unknown GLX tag from server: "
580 "tag 0x%lx value 0x%lx\n", tag, tagvalue);
581 } else {
582 /* Ignore the unrecognized tag's value */
583 bp++;
584 }
585 break;
586 }
587 }
588
589 config->renderType =
590 (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
591 }
592
593 static struct glx_config *
createConfigsFromProperties(Display * dpy,int nvisuals,int nprops,int screen,GLboolean tagged_only)594 createConfigsFromProperties(Display * dpy, int nvisuals, int nprops,
595 int screen, GLboolean tagged_only)
596 {
597 INT32 buf[__GLX_TOTAL_CONFIG], *props;
598 unsigned prop_size;
599 struct glx_config *modes, *m;
600 int i;
601
602 if (nprops == 0)
603 return NULL;
604
605 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
606
607 /* Check number of properties */
608 if (nprops < __GLX_MIN_CONFIG_PROPS || nprops > __GLX_MAX_CONFIG_PROPS)
609 return NULL;
610
611 /* Allocate memory for our config structure */
612 modes = glx_config_create_list(nvisuals);
613 if (!modes)
614 return NULL;
615
616 prop_size = nprops * __GLX_SIZE_INT32;
617 if (prop_size <= sizeof(buf))
618 props = buf;
619 else
620 props = Xmalloc(prop_size);
621
622 /* Read each config structure and convert it into our format */
623 m = modes;
624 for (i = 0; i < nvisuals; i++) {
625 _XRead(dpy, (char *) props, prop_size);
626 #ifdef GLX_USE_APPLEGL
627 /* Older X servers don't send this so we default it here. */
628 m->drawableType = GLX_WINDOW_BIT;
629 #else
630 /*
631 * The XQuartz 2.3.2.1 X server doesn't set this properly, so
632 * set the proper bits here.
633 * AppleSGLX supports windows, pixmaps, and pbuffers with all config.
634 */
635 m->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
636 #endif
637 __glXInitializeVisualConfigFromTags(m, nprops, props,
638 tagged_only, GL_TRUE);
639 m->screen = screen;
640 m = m->next;
641 }
642
643 if (props != buf)
644 Xfree(props);
645
646 return modes;
647 }
648
649 static GLboolean
getVisualConfigs(struct glx_screen * psc,struct glx_display * priv,int screen)650 getVisualConfigs(struct glx_screen *psc,
651 struct glx_display *priv, int screen)
652 {
653 xGLXGetVisualConfigsReq *req;
654 xGLXGetVisualConfigsReply reply;
655 Display *dpy = priv->dpy;
656
657 LockDisplay(dpy);
658
659 psc->visuals = NULL;
660 GetReq(GLXGetVisualConfigs, req);
661 req->reqType = priv->majorOpcode;
662 req->glxCode = X_GLXGetVisualConfigs;
663 req->screen = screen;
664
665 if (!_XReply(dpy, (xReply *) & reply, 0, False))
666 goto out;
667
668 psc->visuals = createConfigsFromProperties(dpy,
669 reply.numVisuals,
670 reply.numProps,
671 screen, GL_FALSE);
672
673 out:
674 UnlockDisplay(dpy);
675 return psc->visuals != NULL;
676 }
677
678 static GLboolean
getFBConfigs(struct glx_screen * psc,struct glx_display * priv,int screen)679 getFBConfigs(struct glx_screen *psc, struct glx_display *priv, int screen)
680 {
681 xGLXGetFBConfigsReq *fb_req;
682 xGLXGetFBConfigsSGIXReq *sgi_req;
683 xGLXVendorPrivateWithReplyReq *vpreq;
684 xGLXGetFBConfigsReply reply;
685 Display *dpy = priv->dpy;
686
687 psc->serverGLXexts =
688 __glXQueryServerString(dpy, priv->majorOpcode, screen, GLX_EXTENSIONS);
689
690 LockDisplay(dpy);
691
692 psc->configs = NULL;
693 if (atof(priv->serverGLXversion) >= 1.3) {
694 GetReq(GLXGetFBConfigs, fb_req);
695 fb_req->reqType = priv->majorOpcode;
696 fb_req->glxCode = X_GLXGetFBConfigs;
697 fb_req->screen = screen;
698 }
699 else if (strstr(psc->serverGLXexts, "GLX_SGIX_fbconfig") != NULL) {
700 GetReqExtra(GLXVendorPrivateWithReply,
701 sz_xGLXGetFBConfigsSGIXReq -
702 sz_xGLXVendorPrivateWithReplyReq, vpreq);
703 sgi_req = (xGLXGetFBConfigsSGIXReq *) vpreq;
704 sgi_req->reqType = priv->majorOpcode;
705 sgi_req->glxCode = X_GLXVendorPrivateWithReply;
706 sgi_req->vendorCode = X_GLXvop_GetFBConfigsSGIX;
707 sgi_req->screen = screen;
708 }
709 else
710 goto out;
711
712 if (!_XReply(dpy, (xReply *) & reply, 0, False))
713 goto out;
714
715 psc->configs = createConfigsFromProperties(dpy,
716 reply.numFBConfigs,
717 reply.numAttribs * 2,
718 screen, GL_TRUE);
719
720 out:
721 UnlockDisplay(dpy);
722 return psc->configs != NULL;
723 }
724
725 _X_HIDDEN Bool
glx_screen_init(struct glx_screen * psc,int screen,struct glx_display * priv)726 glx_screen_init(struct glx_screen *psc,
727 int screen, struct glx_display * priv)
728 {
729 /* Initialize per screen dynamic client GLX extensions */
730 psc->ext_list_first_time = GL_TRUE;
731 psc->scr = screen;
732 psc->dpy = priv->dpy;
733 psc->display = priv;
734
735 getVisualConfigs(psc, priv, screen);
736 getFBConfigs(psc, priv, screen);
737
738 return GL_TRUE;
739 }
740
741 _X_HIDDEN void
glx_screen_cleanup(struct glx_screen * psc)742 glx_screen_cleanup(struct glx_screen *psc)
743 {
744 if (psc->configs) {
745 glx_config_destroy_list(psc->configs);
746 if (psc->effectiveGLXexts)
747 Xfree(psc->effectiveGLXexts);
748 psc->configs = NULL; /* NOTE: just for paranoia */
749 }
750 if (psc->visuals) {
751 glx_config_destroy_list(psc->visuals);
752 psc->visuals = NULL; /* NOTE: just for paranoia */
753 }
754 Xfree((char *) psc->serverGLXexts);
755 }
756
757 /*
758 ** Allocate the memory for the per screen configs for each screen.
759 ** If that works then fetch the per screen configs data.
760 */
761 static Bool
AllocAndFetchScreenConfigs(Display * dpy,struct glx_display * priv)762 AllocAndFetchScreenConfigs(Display * dpy, struct glx_display * priv)
763 {
764 struct glx_screen *psc;
765 GLint i, screens;
766
767 /*
768 ** First allocate memory for the array of per screen configs.
769 */
770 screens = ScreenCount(dpy);
771 priv->screens = Xmalloc(screens * sizeof *priv->screens);
772 if (!priv->screens)
773 return GL_FALSE;
774
775 priv->serverGLXversion =
776 __glXQueryServerString(dpy, priv->majorOpcode, 0, GLX_VERSION);
777 if (priv->serverGLXversion == NULL) {
778 FreeScreenConfigs(priv);
779 return GL_FALSE;
780 }
781
782 for (i = 0; i < screens; i++, psc++) {
783 psc = NULL;
784 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
785 if (priv->dri2Display)
786 psc = (*priv->dri2Display->createScreen) (i, priv);
787 if (psc == NULL && priv->driDisplay)
788 psc = (*priv->driDisplay->createScreen) (i, priv);
789 if (psc == NULL && priv->driswDisplay)
790 psc = (*priv->driswDisplay->createScreen) (i, priv);
791 #endif
792 #if defined(GLX_USE_APPLEGL)
793 if (psc == NULL)
794 psc = applegl_create_screen(i, priv);
795 #else
796 if (psc == NULL)
797 psc = indirect_create_screen(i, priv);
798 #endif
799 priv->screens[i] = psc;
800 }
801 SyncHandle();
802 return GL_TRUE;
803 }
804
805 /*
806 ** Initialize the client side extension code.
807 */
808 _X_HIDDEN struct glx_display *
__glXInitialize(Display * dpy)809 __glXInitialize(Display * dpy)
810 {
811 struct glx_display *dpyPriv, *d;
812 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
813 Bool glx_direct, glx_accel;
814 #endif
815 int i;
816
817 _XLockMutex(_Xglobal_lock);
818
819 for (dpyPriv = glx_displays; dpyPriv; dpyPriv = dpyPriv->next) {
820 if (dpyPriv->dpy == dpy) {
821 _XUnlockMutex(_Xglobal_lock);
822 return dpyPriv;
823 }
824 }
825
826 /* Drop the lock while we create the display private. */
827 _XUnlockMutex(_Xglobal_lock);
828
829 dpyPriv = Xcalloc(1, sizeof *dpyPriv);
830 if (!dpyPriv)
831 return NULL;
832
833 dpyPriv->codes = XInitExtension(dpy, __glXExtensionName);
834 if (!dpyPriv->codes) {
835 Xfree(dpyPriv);
836 _XUnlockMutex(_Xglobal_lock);
837 return NULL;
838 }
839
840 dpyPriv->dpy = dpy;
841 dpyPriv->majorOpcode = dpyPriv->codes->major_opcode;
842 dpyPriv->serverGLXvendor = 0x0;
843 dpyPriv->serverGLXversion = 0x0;
844
845 /* See if the versions are compatible. This GLX implementation does not
846 * work with servers that only support GLX 1.0.
847 */
848 if (!QueryVersion(dpy, dpyPriv->majorOpcode,
849 &dpyPriv->majorVersion, &dpyPriv->minorVersion)
850 || (dpyPriv->majorVersion == 1 && dpyPriv->minorVersion < 1)) {
851 Xfree(dpyPriv);
852 _XUnlockMutex(_Xglobal_lock);
853 return NULL;
854 }
855
856 for (i = 0; i < __GLX_NUMBER_EVENTS; i++) {
857 XESetWireToEvent(dpy, dpyPriv->codes->first_event + i, __glXWireToEvent);
858 XESetEventToWire(dpy, dpyPriv->codes->first_event + i, __glXEventToWire);
859 }
860
861 XESetCloseDisplay(dpy, dpyPriv->codes->extension, __glXCloseDisplay);
862 XESetErrorString (dpy, dpyPriv->codes->extension,__glXErrorString);
863
864 dpyPriv->glXDrawHash = __glxHashCreate();
865
866 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
867 glx_direct = (getenv("LIBGL_ALWAYS_INDIRECT") == NULL);
868 glx_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
869
870 dpyPriv->drawHash = __glxHashCreate();
871
872 /*
873 ** Initialize the direct rendering per display data and functions.
874 ** Note: This _must_ be done before calling any other DRI routines
875 ** (e.g., those called in AllocAndFetchScreenConfigs).
876 */
877 if (glx_direct && glx_accel) {
878 dpyPriv->dri2Display = dri2CreateDisplay(dpy);
879 dpyPriv->driDisplay = driCreateDisplay(dpy);
880 }
881 if (glx_direct)
882 dpyPriv->driswDisplay = driswCreateDisplay(dpy);
883 #endif
884
885 #ifdef GLX_USE_APPLEGL
886 if (!applegl_create_display(dpyPriv)) {
887 Xfree(dpyPriv);
888 return NULL;
889 }
890 #endif
891 if (!AllocAndFetchScreenConfigs(dpy, dpyPriv)) {
892 Xfree(dpyPriv);
893 return NULL;
894 }
895
896 #ifdef USE_XCB
897 __glX_send_client_info(dpyPriv);
898 #else
899 __glXClientInfo(dpy, dpyPriv->majorOpcode);
900 #endif
901
902 /* Grab the lock again and add the dispay private, unless somebody
903 * beat us to initializing on this display in the meantime. */
904 _XLockMutex(_Xglobal_lock);
905
906 for (d = glx_displays; d; d = d->next) {
907 if (d->dpy == dpy) {
908 _XUnlockMutex(_Xglobal_lock);
909 glx_display_free(dpyPriv);
910 return d;
911 }
912 }
913
914 dpyPriv->next = glx_displays;
915 glx_displays = dpyPriv;
916
917 _XUnlockMutex(_Xglobal_lock);
918
919 return dpyPriv;
920 }
921
922 /*
923 ** Setup for sending a GLX command on dpy. Make sure the extension is
924 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
925 */
926 _X_HIDDEN CARD8
__glXSetupForCommand(Display * dpy)927 __glXSetupForCommand(Display * dpy)
928 {
929 struct glx_context *gc;
930 struct glx_display *priv;
931
932 /* If this thread has a current context, flush its rendering commands */
933 gc = __glXGetCurrentContext();
934 if (gc->currentDpy) {
935 /* Flush rendering buffer of the current context, if any */
936 (void) __glXFlushRenderBuffer(gc, gc->pc);
937
938 if (gc->currentDpy == dpy) {
939 /* Use opcode from gc because its right */
940 return gc->majorOpcode;
941 }
942 else {
943 /*
944 ** Have to get info about argument dpy because it might be to
945 ** a different server
946 */
947 }
948 }
949
950 /* Forced to lookup extension via the slow initialize route */
951 priv = __glXInitialize(dpy);
952 if (!priv) {
953 return 0;
954 }
955 return priv->majorOpcode;
956 }
957
958 /**
959 * Flush the drawing command transport buffer.
960 *
961 * \param ctx Context whose transport buffer is to be flushed.
962 * \param pc Pointer to first unused buffer location.
963 *
964 * \todo
965 * Modify this function to use \c ctx->pc instead of the explicit
966 * \c pc parameter.
967 */
968 _X_HIDDEN GLubyte *
__glXFlushRenderBuffer(struct glx_context * ctx,GLubyte * pc)969 __glXFlushRenderBuffer(struct glx_context * ctx, GLubyte * pc)
970 {
971 Display *const dpy = ctx->currentDpy;
972 #ifdef USE_XCB
973 xcb_connection_t *c = XGetXCBConnection(dpy);
974 #else
975 xGLXRenderReq *req;
976 #endif /* USE_XCB */
977 const GLint size = pc - ctx->buf;
978
979 if ((dpy != NULL) && (size > 0)) {
980 #ifdef USE_XCB
981 xcb_glx_render(c, ctx->currentContextTag, size,
982 (const uint8_t *) ctx->buf);
983 #else
984 /* Send the entire buffer as an X request */
985 LockDisplay(dpy);
986 GetReq(GLXRender, req);
987 req->reqType = ctx->majorOpcode;
988 req->glxCode = X_GLXRender;
989 req->contextTag = ctx->currentContextTag;
990 req->length += (size + 3) >> 2;
991 _XSend(dpy, (char *) ctx->buf, size);
992 UnlockDisplay(dpy);
993 SyncHandle();
994 #endif
995 }
996
997 /* Reset pointer and return it */
998 ctx->pc = ctx->buf;
999 return ctx->pc;
1000 }
1001
1002
1003 /**
1004 * Send a portion of a GLXRenderLarge command to the server. The advantage of
1005 * this function over \c __glXSendLargeCommand is that callers can use the
1006 * data buffer in the GLX context and may be able to avoid allocating an
1007 * extra buffer. The disadvantage is the clients will have to do more
1008 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
1009 *
1010 * \sa __glXSendLargeCommand
1011 *
1012 * \param gc GLX context
1013 * \param requestNumber Which part of the whole command is this? The first
1014 * request is 1.
1015 * \param totalRequests How many requests will there be?
1016 * \param data Command data.
1017 * \param dataLen Size, in bytes, of the command data.
1018 */
1019 _X_HIDDEN void
__glXSendLargeChunk(struct glx_context * gc,GLint requestNumber,GLint totalRequests,const GLvoid * data,GLint dataLen)1020 __glXSendLargeChunk(struct glx_context * gc, GLint requestNumber,
1021 GLint totalRequests, const GLvoid * data, GLint dataLen)
1022 {
1023 Display *dpy = gc->currentDpy;
1024 #ifdef USE_XCB
1025 xcb_connection_t *c = XGetXCBConnection(dpy);
1026 xcb_glx_render_large(c, gc->currentContextTag, requestNumber,
1027 totalRequests, dataLen, data);
1028 #else
1029 xGLXRenderLargeReq *req;
1030
1031 if (requestNumber == 1) {
1032 LockDisplay(dpy);
1033 }
1034
1035 GetReq(GLXRenderLarge, req);
1036 req->reqType = gc->majorOpcode;
1037 req->glxCode = X_GLXRenderLarge;
1038 req->contextTag = gc->currentContextTag;
1039 req->length += (dataLen + 3) >> 2;
1040 req->requestNumber = requestNumber;
1041 req->requestTotal = totalRequests;
1042 req->dataBytes = dataLen;
1043 Data(dpy, data, dataLen);
1044
1045 if (requestNumber == totalRequests) {
1046 UnlockDisplay(dpy);
1047 SyncHandle();
1048 }
1049 #endif /* USE_XCB */
1050 }
1051
1052
1053 /**
1054 * Send a command that is too large for the GLXRender protocol request.
1055 *
1056 * Send a large command, one that is too large for some reason to
1057 * send using the GLXRender protocol request. One reason to send
1058 * a large command is to avoid copying the data.
1059 *
1060 * \param ctx GLX context
1061 * \param header Header data.
1062 * \param headerLen Size, in bytes, of the header data. It is assumed that
1063 * the header data will always be small enough to fit in
1064 * a single X protocol packet.
1065 * \param data Command data.
1066 * \param dataLen Size, in bytes, of the command data.
1067 */
1068 _X_HIDDEN void
__glXSendLargeCommand(struct glx_context * ctx,const GLvoid * header,GLint headerLen,const GLvoid * data,GLint dataLen)1069 __glXSendLargeCommand(struct glx_context * ctx,
1070 const GLvoid * header, GLint headerLen,
1071 const GLvoid * data, GLint dataLen)
1072 {
1073 GLint maxSize;
1074 GLint totalRequests, requestNumber;
1075
1076 /*
1077 ** Calculate the maximum amount of data can be stuffed into a single
1078 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1079 ** packet size minus sz_xGLXRenderReq.
1080 */
1081 maxSize = (ctx->bufSize + sz_xGLXRenderReq) - sz_xGLXRenderLargeReq;
1082 totalRequests = 1 + (dataLen / maxSize);
1083 if (dataLen % maxSize)
1084 totalRequests++;
1085
1086 /*
1087 ** Send all of the command, except the large array, as one request.
1088 */
1089 assert(headerLen <= maxSize);
1090 __glXSendLargeChunk(ctx, 1, totalRequests, header, headerLen);
1091
1092 /*
1093 ** Send enough requests until the whole array is sent.
1094 */
1095 for (requestNumber = 2; requestNumber <= (totalRequests - 1);
1096 requestNumber++) {
1097 __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, maxSize);
1098 data = (const GLvoid *) (((const GLubyte *) data) + maxSize);
1099 dataLen -= maxSize;
1100 assert(dataLen > 0);
1101 }
1102
1103 assert(dataLen <= maxSize);
1104 __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, dataLen);
1105 }
1106
1107 /************************************************************************/
1108
1109 #ifdef DEBUG
1110 _X_HIDDEN void
__glXDumpDrawBuffer(struct glx_context * ctx)1111 __glXDumpDrawBuffer(struct glx_context * ctx)
1112 {
1113 GLubyte *p = ctx->buf;
1114 GLubyte *end = ctx->pc;
1115 GLushort opcode, length;
1116
1117 while (p < end) {
1118 /* Fetch opcode */
1119 opcode = *((GLushort *) p);
1120 length = *((GLushort *) (p + 2));
1121 printf("%2x: %5d: ", opcode, length);
1122 length -= 4;
1123 p += 4;
1124 while (length > 0) {
1125 printf("%08x ", *((unsigned *) p));
1126 p += 4;
1127 length -= 4;
1128 }
1129 printf("\n");
1130 }
1131 }
1132 #endif
1133