meson: glx: drop with_glx == dri check
[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 <stdbool.h>
42
43 #include "glxclient.h"
44 #include <X11/extensions/Xext.h>
45 #include <X11/extensions/extutil.h>
46 #ifdef GLX_USE_APPLEGL
47 #include "apple/apple_glx.h"
48 #include "apple/apple_visual.h"
49 #endif
50 #include "glxextensions.h"
51
52 #include "util/debug.h"
53
54 #include <X11/Xlib-xcb.h>
55 #include <xcb/xcb.h>
56 #include <xcb/glx.h>
57
58
59 #ifdef DEBUG
60 void __glXDumpDrawBuffer(struct glx_context * ctx);
61 #endif
62
63 /*
64 ** You can set this cell to 1 to force the gl drawing stuff to be
65 ** one command per packet
66 */
67 _X_HIDDEN int __glXDebug = 0;
68
69 /* Extension required boiler plate */
70
71 static const char __glXExtensionName[] = GLX_EXTENSION_NAME;
72 static struct glx_display *glx_displays;
73
74 static /* const */ char *error_list[] = {
75 "GLXBadContext",
76 "GLXBadContextState",
77 "GLXBadDrawable",
78 "GLXBadPixmap",
79 "GLXBadContextTag",
80 "GLXBadCurrentWindow",
81 "GLXBadRenderRequest",
82 "GLXBadLargeRequest",
83 "GLXUnsupportedPrivateRequest",
84 "GLXBadFBConfig",
85 "GLXBadPbuffer",
86 "GLXBadCurrentDrawable",
87 "GLXBadWindow",
88 "GLXBadProfileARB",
89 };
90
91 #ifdef GLX_USE_APPLEGL
92 static char *__glXErrorString(Display *dpy, int code, XExtCodes *codes,
93 char *buf, int n);
94 #endif
95
96 static
97 XEXT_GENERATE_ERROR_STRING(__glXErrorString, __glXExtensionName,
98 __GLX_NUMBER_ERRORS, error_list)
99
100 /*
101 * GLX events are a bit funky. We don't stuff the X event code into
102 * our user exposed (via XNextEvent) structure. Instead we use the GLX
103 * private event code namespace (and hope it doesn't conflict). Clients
104 * have to know that bit 15 in the event type field means they're getting
105 * a GLX event, and then handle the various sub-event types there, rather
106 * than simply checking the event code and handling it directly.
107 */
108
109 static Bool
110 __glXWireToEvent(Display *dpy, XEvent *event, xEvent *wire)
111 {
112 struct glx_display *glx_dpy = __glXInitialize(dpy);
113
114 if (glx_dpy == NULL)
115 return False;
116
117 switch ((wire->u.u.type & 0x7f) - glx_dpy->codes->first_event) {
118 case GLX_PbufferClobber:
119 {
120 GLXPbufferClobberEvent *aevent = (GLXPbufferClobberEvent *)event;
121 xGLXPbufferClobberEvent *awire = (xGLXPbufferClobberEvent *)wire;
122 aevent->event_type = awire->type;
123 aevent->serial = awire->sequenceNumber;
124 aevent->event_type = awire->event_type;
125 aevent->draw_type = awire->draw_type;
126 aevent->drawable = awire->drawable;
127 aevent->buffer_mask = awire->buffer_mask;
128 aevent->aux_buffer = awire->aux_buffer;
129 aevent->x = awire->x;
130 aevent->y = awire->y;
131 aevent->width = awire->width;
132 aevent->height = awire->height;
133 aevent->count = awire->count;
134 return True;
135 }
136 case GLX_BufferSwapComplete:
137 {
138 GLXBufferSwapComplete *aevent = (GLXBufferSwapComplete *)event;
139 xGLXBufferSwapComplete2 *awire = (xGLXBufferSwapComplete2 *)wire;
140 struct glx_drawable *glxDraw = GetGLXDrawable(dpy, awire->drawable);
141
142 if (!glxDraw)
143 return False;
144
145 aevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *) wire);
146 aevent->send_event = (awire->type & 0x80) != 0;
147 aevent->display = dpy;
148 aevent->event_type = awire->event_type;
149 aevent->drawable = glxDraw->xDrawable;
150 aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
151 aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
152
153 /* Handle 32-Bit wire sbc wraparound in both directions to cope with out
154 * of sequence 64-Bit sbc's
155 */
156 if ((int64_t) awire->sbc < ((int64_t) glxDraw->lastEventSbc - 0x40000000))
157 glxDraw->eventSbcWrap += 0x100000000;
158 if ((int64_t) awire->sbc > ((int64_t) glxDraw->lastEventSbc + 0x40000000))
159 glxDraw->eventSbcWrap -= 0x100000000;
160 glxDraw->lastEventSbc = awire->sbc;
161 aevent->sbc = awire->sbc + glxDraw->eventSbcWrap;
162 return True;
163 }
164 default:
165 /* client doesn't support server event */
166 break;
167 }
168
169 return False;
170 }
171
172 /* We don't actually support this. It doesn't make sense for clients to
173 * send each other GLX events.
174 */
175 static Status
176 __glXEventToWire(Display *dpy, XEvent *event, xEvent *wire)
177 {
178 struct glx_display *glx_dpy = __glXInitialize(dpy);
179
180 if (glx_dpy == NULL)
181 return False;
182
183 switch (event->type) {
184 case GLX_DAMAGED:
185 break;
186 case GLX_SAVED:
187 break;
188 case GLX_EXCHANGE_COMPLETE_INTEL:
189 break;
190 case GLX_COPY_COMPLETE_INTEL:
191 break;
192 case GLX_FLIP_COMPLETE_INTEL:
193 break;
194 default:
195 /* client doesn't support server event */
196 break;
197 }
198
199 return Success;
200 }
201
202 /************************************************************************/
203 /*
204 ** Free the per screen configs data as well as the array of
205 ** __glXScreenConfigs.
206 */
207 static void
208 FreeScreenConfigs(struct glx_display * priv)
209 {
210 struct glx_screen *psc;
211 GLint i, screens;
212
213 /* Free screen configuration information */
214 screens = ScreenCount(priv->dpy);
215 for (i = 0; i < screens; i++) {
216 psc = priv->screens[i];
217 if (!psc)
218 continue;
219 glx_screen_cleanup(psc);
220
221 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
222 if (psc->driScreen) {
223 psc->driScreen->destroyScreen(psc);
224 } else {
225 free(psc);
226 }
227 #else
228 free(psc);
229 #endif
230 }
231 free((char *) priv->screens);
232 priv->screens = NULL;
233 }
234
235 static void
236 glx_display_free(struct glx_display *priv)
237 {
238 struct glx_context *gc;
239
240 gc = __glXGetCurrentContext();
241 if (priv->dpy == gc->currentDpy) {
242 gc->vtable->destroy(gc);
243 __glXSetCurrentContextNull();
244 }
245
246 FreeScreenConfigs(priv);
247 free((char *) priv->serverGLXvendor);
248 free((char *) priv->serverGLXversion);
249
250 __glxHashDestroy(priv->glXDrawHash);
251
252 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
253 __glxHashDestroy(priv->drawHash);
254
255 /* Free the direct rendering per display data */
256 if (priv->driswDisplay)
257 (*priv->driswDisplay->destroyDisplay) (priv->driswDisplay);
258 priv->driswDisplay = NULL;
259
260 #if defined (GLX_USE_DRM)
261 if (priv->driDisplay)
262 (*priv->driDisplay->destroyDisplay) (priv->driDisplay);
263 priv->driDisplay = NULL;
264
265 if (priv->dri2Display)
266 (*priv->dri2Display->destroyDisplay) (priv->dri2Display);
267 priv->dri2Display = NULL;
268
269 if (priv->dri3Display)
270 (*priv->dri3Display->destroyDisplay) (priv->dri3Display);
271 priv->dri3Display = NULL;
272 #endif /* GLX_USE_DRM */
273
274 #if defined(GLX_USE_WINDOWSGL)
275 if (priv->windowsdriDisplay)
276 (*priv->windowsdriDisplay->destroyDisplay) (priv->windowsdriDisplay);
277 priv->windowsdriDisplay = NULL;
278 #endif /* GLX_USE_WINDOWSGL */
279
280 #endif /* GLX_DIRECT_RENDERING && !GLX_USE_APPLEGL */
281
282 free((char *) priv);
283 }
284
285 static int
286 __glXCloseDisplay(Display * dpy, XExtCodes * codes)
287 {
288 struct glx_display *priv, **prev;
289
290 _XLockMutex(_Xglobal_lock);
291 prev = &glx_displays;
292 for (priv = glx_displays; priv; prev = &priv->next, priv = priv->next) {
293 if (priv->dpy == dpy) {
294 *prev = priv->next;
295 break;
296 }
297 }
298 _XUnlockMutex(_Xglobal_lock);
299
300 if (priv != NULL)
301 glx_display_free(priv);
302
303 return 1;
304 }
305
306 /*
307 ** Query the version of the GLX extension. This procedure works even if
308 ** the client extension is not completely set up.
309 */
310 static Bool
311 QueryVersion(Display * dpy, int opcode, int *major, int *minor)
312 {
313 xcb_connection_t *c = XGetXCBConnection(dpy);
314 xcb_glx_query_version_reply_t *reply = xcb_glx_query_version_reply(c,
315 xcb_glx_query_version
316 (c,
317 GLX_MAJOR_VERSION,
318 GLX_MINOR_VERSION),
319 NULL);
320
321 if (!reply)
322 return GL_FALSE;
323
324 if (reply->major_version != GLX_MAJOR_VERSION) {
325 free(reply);
326 return GL_FALSE;
327 }
328 *major = reply->major_version;
329 *minor = min(reply->minor_version, GLX_MINOR_VERSION);
330 free(reply);
331 return GL_TRUE;
332 }
333
334 /*
335 * We don't want to enable this GLX_OML_swap_method in glxext.h,
336 * because we can't support it. The X server writes it out though,
337 * so we should handle it somehow, to avoid false warnings.
338 */
339 enum {
340 IGNORE_GLX_SWAP_METHOD_OML = 0x8060
341 };
342
343
344 static GLint
345 convert_from_x_visual_type(int visualType)
346 {
347 static const int glx_visual_types[] = {
348 [StaticGray] = GLX_STATIC_GRAY,
349 [GrayScale] = GLX_GRAY_SCALE,
350 [StaticColor] = GLX_STATIC_COLOR,
351 [PseudoColor] = GLX_PSEUDO_COLOR,
352 [TrueColor] = GLX_TRUE_COLOR,
353 [DirectColor] = GLX_DIRECT_COLOR,
354 };
355
356 if (visualType < ARRAY_SIZE(glx_visual_types))
357 return glx_visual_types[visualType];
358
359 return GLX_NONE;
360 }
361
362 /*
363 * getVisualConfigs uses the !tagged_only path.
364 * getFBConfigs uses the tagged_only path.
365 */
366 _X_HIDDEN void
367 __glXInitializeVisualConfigFromTags(struct glx_config * config, int count,
368 const INT32 * bp, Bool tagged_only,
369 Bool fbconfig_style_tags)
370 {
371 int i;
372
373 if (!tagged_only) {
374 /* Copy in the first set of properties */
375 config->visualID = *bp++;
376
377 config->visualType = convert_from_x_visual_type(*bp++);
378
379 config->renderType = *bp++ ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
380
381 config->redBits = *bp++;
382 config->greenBits = *bp++;
383 config->blueBits = *bp++;
384 config->alphaBits = *bp++;
385 config->accumRedBits = *bp++;
386 config->accumGreenBits = *bp++;
387 config->accumBlueBits = *bp++;
388 config->accumAlphaBits = *bp++;
389
390 config->doubleBufferMode = *bp++;
391 config->stereoMode = *bp++;
392
393 config->rgbBits = *bp++;
394 config->depthBits = *bp++;
395 config->stencilBits = *bp++;
396 config->numAuxBuffers = *bp++;
397 config->level = *bp++;
398
399 #ifdef GLX_USE_APPLEGL
400 /* AppleSGLX supports pixmap and pbuffers with all config. */
401 config->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
402 /* Unfortunately this can create an ABI compatibility problem. */
403 count -= 18;
404 #else
405 count -= __GLX_MIN_CONFIG_PROPS;
406 #endif
407 }
408
409 /*
410 ** Additional properties may be in a list at the end
411 ** of the reply. They are in pairs of property type
412 ** and property value.
413 */
414
415 #define FETCH_OR_SET(tag) \
416 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
417
418 for (i = 0; i < count; i += 2) {
419 long int tag = *bp++;
420
421 switch (tag) {
422 case GLX_RGBA:
423 if (fbconfig_style_tags)
424 config->renderType = *bp++ ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
425 else
426 config->renderType = GLX_RGBA_BIT;
427 break;
428 case GLX_BUFFER_SIZE:
429 config->rgbBits = *bp++;
430 break;
431 case GLX_LEVEL:
432 config->level = *bp++;
433 break;
434 case GLX_DOUBLEBUFFER:
435 FETCH_OR_SET(doubleBufferMode);
436 break;
437 case GLX_STEREO:
438 FETCH_OR_SET(stereoMode);
439 break;
440 case GLX_AUX_BUFFERS:
441 config->numAuxBuffers = *bp++;
442 break;
443 case GLX_RED_SIZE:
444 config->redBits = *bp++;
445 break;
446 case GLX_GREEN_SIZE:
447 config->greenBits = *bp++;
448 break;
449 case GLX_BLUE_SIZE:
450 config->blueBits = *bp++;
451 break;
452 case GLX_ALPHA_SIZE:
453 config->alphaBits = *bp++;
454 break;
455 case GLX_DEPTH_SIZE:
456 config->depthBits = *bp++;
457 break;
458 case GLX_STENCIL_SIZE:
459 config->stencilBits = *bp++;
460 break;
461 case GLX_ACCUM_RED_SIZE:
462 config->accumRedBits = *bp++;
463 break;
464 case GLX_ACCUM_GREEN_SIZE:
465 config->accumGreenBits = *bp++;
466 break;
467 case GLX_ACCUM_BLUE_SIZE:
468 config->accumBlueBits = *bp++;
469 break;
470 case GLX_ACCUM_ALPHA_SIZE:
471 config->accumAlphaBits = *bp++;
472 break;
473 case GLX_VISUAL_CAVEAT_EXT:
474 config->visualRating = *bp++;
475 break;
476 case GLX_X_VISUAL_TYPE:
477 config->visualType = *bp++;
478 break;
479 case GLX_TRANSPARENT_TYPE:
480 config->transparentPixel = *bp++;
481 break;
482 case GLX_TRANSPARENT_INDEX_VALUE:
483 config->transparentIndex = *bp++;
484 break;
485 case GLX_TRANSPARENT_RED_VALUE:
486 config->transparentRed = *bp++;
487 break;
488 case GLX_TRANSPARENT_GREEN_VALUE:
489 config->transparentGreen = *bp++;
490 break;
491 case GLX_TRANSPARENT_BLUE_VALUE:
492 config->transparentBlue = *bp++;
493 break;
494 case GLX_TRANSPARENT_ALPHA_VALUE:
495 config->transparentAlpha = *bp++;
496 break;
497 case GLX_VISUAL_ID:
498 config->visualID = *bp++;
499 break;
500 case GLX_DRAWABLE_TYPE:
501 config->drawableType = *bp++;
502 #ifdef GLX_USE_APPLEGL
503 /* AppleSGLX supports pixmap and pbuffers with all config. */
504 config->drawableType |= GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
505 #endif
506 break;
507 case GLX_RENDER_TYPE: /* fbconfig render type bits */
508 config->renderType = *bp++;
509 break;
510 case GLX_X_RENDERABLE:
511 config->xRenderable = *bp++;
512 break;
513 case GLX_FBCONFIG_ID:
514 config->fbconfigID = *bp++;
515 break;
516 case GLX_MAX_PBUFFER_WIDTH:
517 config->maxPbufferWidth = *bp++;
518 break;
519 case GLX_MAX_PBUFFER_HEIGHT:
520 config->maxPbufferHeight = *bp++;
521 break;
522 case GLX_MAX_PBUFFER_PIXELS:
523 config->maxPbufferPixels = *bp++;
524 break;
525 #ifndef GLX_USE_APPLEGL
526 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX:
527 config->optimalPbufferWidth = *bp++;
528 break;
529 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX:
530 config->optimalPbufferHeight = *bp++;
531 break;
532 case GLX_VISUAL_SELECT_GROUP_SGIX:
533 config->visualSelectGroup = *bp++;
534 break;
535 case GLX_SWAP_METHOD_OML:
536 if (*bp == GLX_SWAP_UNDEFINED_OML ||
537 *bp == GLX_SWAP_COPY_OML ||
538 *bp == GLX_SWAP_EXCHANGE_OML) {
539 config->swapMethod = *bp++;
540 } else {
541 /* X servers with old HW drivers may return any value here, so
542 * assume GLX_SWAP_METHOD_UNDEFINED.
543 */
544 config->swapMethod = GLX_SWAP_UNDEFINED_OML;
545 bp++;
546 }
547 break;
548 #endif
549 case GLX_SAMPLE_BUFFERS_SGIS:
550 config->sampleBuffers = *bp++;
551 break;
552 case GLX_SAMPLES_SGIS:
553 config->samples = *bp++;
554 break;
555 #ifdef GLX_USE_APPLEGL
556 case IGNORE_GLX_SWAP_METHOD_OML:
557 /* We ignore this tag. See the comment above this function. */
558 ++bp;
559 break;
560 #else
561 case GLX_BIND_TO_TEXTURE_RGB_EXT:
562 config->bindToTextureRgb = *bp++;
563 break;
564 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
565 config->bindToTextureRgba = *bp++;
566 break;
567 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
568 config->bindToMipmapTexture = *bp++;
569 break;
570 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
571 config->bindToTextureTargets = *bp++;
572 break;
573 case GLX_Y_INVERTED_EXT:
574 config->yInverted = *bp++;
575 break;
576 #endif
577 case GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT:
578 config->sRGBCapable = *bp++;
579 break;
580
581 case GLX_USE_GL:
582 if (fbconfig_style_tags)
583 bp++;
584 break;
585 case None:
586 i = count;
587 break;
588 default:
589 if(env_var_as_boolean("LIBGL_DIAGNOSTIC", false)) {
590 long int tagvalue = *bp++;
591 fprintf(stderr, "WARNING: unknown GLX tag from server: "
592 "tag 0x%lx value 0x%lx\n", tag, tagvalue);
593 } else {
594 /* Ignore the unrecognized tag's value */
595 bp++;
596 }
597 break;
598 }
599 }
600
601 /* The GLX_ARB_fbconfig_float spec says:
602 *
603 * "Note that floating point rendering is only supported for
604 * GLXPbuffer drawables."
605 */
606 if (config->renderType &
607 (GLX_RGBA_FLOAT_BIT_ARB|GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT))
608 config->drawableType &= GLX_PBUFFER_BIT;
609 }
610
611 static struct glx_config *
612 createConfigsFromProperties(Display * dpy, int nvisuals, int nprops,
613 int screen, GLboolean tagged_only)
614 {
615 INT32 buf[__GLX_TOTAL_CONFIG], *props;
616 unsigned prop_size;
617 struct glx_config *modes, *m;
618 int i;
619
620 if (nprops == 0)
621 return NULL;
622
623 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
624
625 /* Check number of properties */
626 if (nprops < __GLX_MIN_CONFIG_PROPS || nprops > __GLX_MAX_CONFIG_PROPS)
627 return NULL;
628
629 /* Allocate memory for our config structure */
630 modes = glx_config_create_list(nvisuals);
631 if (!modes)
632 return NULL;
633
634 prop_size = nprops * __GLX_SIZE_INT32;
635 if (prop_size <= sizeof(buf))
636 props = buf;
637 else
638 props = malloc(prop_size);
639
640 /* Read each config structure and convert it into our format */
641 m = modes;
642 for (i = 0; i < nvisuals; i++) {
643 _XRead(dpy, (char *) props, prop_size);
644 #ifdef GLX_USE_APPLEGL
645 /* Older X servers don't send this so we default it here. */
646 m->drawableType = GLX_WINDOW_BIT;
647 #else
648 /*
649 * The XQuartz 2.3.2.1 X server doesn't set this properly, so
650 * set the proper bits here.
651 * AppleSGLX supports windows, pixmaps, and pbuffers with all config.
652 */
653 m->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
654 #endif
655 /* Older X servers don't send this so we default it here. */
656 m->sRGBCapable = GL_FALSE;
657 __glXInitializeVisualConfigFromTags(m, nprops, props,
658 tagged_only, GL_TRUE);
659 m->screen = screen;
660 m = m->next;
661 }
662
663 if (props != buf)
664 free(props);
665
666 return modes;
667 }
668
669 static GLboolean
670 getVisualConfigs(struct glx_screen *psc,
671 struct glx_display *priv, int screen)
672 {
673 xGLXGetVisualConfigsReq *req;
674 xGLXGetVisualConfigsReply reply;
675 Display *dpy = priv->dpy;
676
677 LockDisplay(dpy);
678
679 psc->visuals = NULL;
680 GetReq(GLXGetVisualConfigs, req);
681 req->reqType = priv->majorOpcode;
682 req->glxCode = X_GLXGetVisualConfigs;
683 req->screen = screen;
684
685 if (!_XReply(dpy, (xReply *) & reply, 0, False))
686 goto out;
687
688 psc->visuals = createConfigsFromProperties(dpy,
689 reply.numVisuals,
690 reply.numProps,
691 screen, GL_FALSE);
692
693 out:
694 UnlockDisplay(dpy);
695 return psc->visuals != NULL;
696 }
697
698 static GLboolean
699 getFBConfigs(struct glx_screen *psc, struct glx_display *priv, int screen)
700 {
701 xGLXGetFBConfigsReq *fb_req;
702 xGLXGetFBConfigsSGIXReq *sgi_req;
703 xGLXVendorPrivateWithReplyReq *vpreq;
704 xGLXGetFBConfigsReply reply;
705 Display *dpy = priv->dpy;
706
707 psc->serverGLXexts =
708 __glXQueryServerString(dpy, priv->majorOpcode, screen, GLX_EXTENSIONS);
709
710 if (psc->serverGLXexts == NULL) {
711 return GL_FALSE;
712 }
713
714 LockDisplay(dpy);
715
716 psc->configs = NULL;
717 if (priv->majorVersion > 1 ||
718 (priv->majorVersion == 1 && priv->minorVersion >= 3)) {
719 GetReq(GLXGetFBConfigs, fb_req);
720 fb_req->reqType = priv->majorOpcode;
721 fb_req->glxCode = X_GLXGetFBConfigs;
722 fb_req->screen = screen;
723 }
724 else if (strstr(psc->serverGLXexts, "GLX_SGIX_fbconfig") != NULL) {
725 GetReqExtra(GLXVendorPrivateWithReply,
726 sz_xGLXGetFBConfigsSGIXReq -
727 sz_xGLXVendorPrivateWithReplyReq, vpreq);
728 sgi_req = (xGLXGetFBConfigsSGIXReq *) vpreq;
729 sgi_req->reqType = priv->majorOpcode;
730 sgi_req->glxCode = X_GLXVendorPrivateWithReply;
731 sgi_req->vendorCode = X_GLXvop_GetFBConfigsSGIX;
732 sgi_req->screen = screen;
733 }
734 else
735 goto out;
736
737 if (!_XReply(dpy, (xReply *) & reply, 0, False))
738 goto out;
739
740 psc->configs = createConfigsFromProperties(dpy,
741 reply.numFBConfigs,
742 reply.numAttribs * 2,
743 screen, GL_TRUE);
744
745 out:
746 UnlockDisplay(dpy);
747 return psc->configs != NULL;
748 }
749
750 _X_HIDDEN Bool
751 glx_screen_init(struct glx_screen *psc,
752 int screen, struct glx_display * priv)
753 {
754 /* Initialize per screen dynamic client GLX extensions */
755 psc->ext_list_first_time = GL_TRUE;
756 psc->scr = screen;
757 psc->dpy = priv->dpy;
758 psc->display = priv;
759
760 if (!getVisualConfigs(psc, priv, screen))
761 return GL_FALSE;
762
763 if (!getFBConfigs(psc, priv, screen))
764 return GL_FALSE;
765
766 return GL_TRUE;
767 }
768
769 _X_HIDDEN void
770 glx_screen_cleanup(struct glx_screen *psc)
771 {
772 if (psc->configs) {
773 glx_config_destroy_list(psc->configs);
774 free(psc->effectiveGLXexts);
775 psc->configs = NULL; /* NOTE: just for paranoia */
776 }
777 if (psc->visuals) {
778 glx_config_destroy_list(psc->visuals);
779 psc->visuals = NULL; /* NOTE: just for paranoia */
780 }
781 free((char *) psc->serverGLXexts);
782 }
783
784 /*
785 ** Allocate the memory for the per screen configs for each screen.
786 ** If that works then fetch the per screen configs data.
787 */
788 static Bool
789 AllocAndFetchScreenConfigs(Display * dpy, struct glx_display * priv)
790 {
791 struct glx_screen *psc;
792 GLint i, screens;
793
794 /*
795 ** First allocate memory for the array of per screen configs.
796 */
797 screens = ScreenCount(dpy);
798 priv->screens = calloc(screens, sizeof *priv->screens);
799 if (!priv->screens)
800 return GL_FALSE;
801
802 priv->serverGLXversion =
803 __glXQueryServerString(dpy, priv->majorOpcode, 0, GLX_VERSION);
804 if (priv->serverGLXversion == NULL) {
805 FreeScreenConfigs(priv);
806 return GL_FALSE;
807 }
808
809 for (i = 0; i < screens; i++, psc++) {
810 psc = NULL;
811 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
812 #if defined(GLX_USE_DRM)
813 #if defined(HAVE_DRI3)
814 if (priv->dri3Display)
815 psc = (*priv->dri3Display->createScreen) (i, priv);
816 #endif /* HAVE_DRI3 */
817 if (psc == NULL && priv->dri2Display)
818 psc = (*priv->dri2Display->createScreen) (i, priv);
819 if (psc == NULL && priv->driDisplay)
820 psc = (*priv->driDisplay->createScreen) (i, priv);
821 #endif /* GLX_USE_DRM */
822
823 #ifdef GLX_USE_WINDOWSGL
824 if (psc == NULL && priv->windowsdriDisplay)
825 psc = (*priv->windowsdriDisplay->createScreen) (i, priv);
826 #endif
827
828 if (psc == NULL && priv->driswDisplay)
829 psc = (*priv->driswDisplay->createScreen) (i, priv);
830 #endif /* GLX_DIRECT_RENDERING && !GLX_USE_APPLEGL */
831
832 #if defined(GLX_USE_APPLEGL)
833 if (psc == NULL)
834 psc = applegl_create_screen(i, priv);
835 #else
836 if (psc == NULL)
837 psc = indirect_create_screen(i, priv);
838 #endif
839 priv->screens[i] = psc;
840 }
841 SyncHandle();
842 return GL_TRUE;
843 }
844
845 /*
846 ** Initialize the client side extension code.
847 */
848 _X_HIDDEN struct glx_display *
849 __glXInitialize(Display * dpy)
850 {
851 struct glx_display *dpyPriv, *d;
852 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
853 Bool glx_direct, glx_accel;
854 #endif
855 int i;
856
857 _XLockMutex(_Xglobal_lock);
858
859 for (dpyPriv = glx_displays; dpyPriv; dpyPriv = dpyPriv->next) {
860 if (dpyPriv->dpy == dpy) {
861 _XUnlockMutex(_Xglobal_lock);
862 return dpyPriv;
863 }
864 }
865
866 /* Drop the lock while we create the display private. */
867 _XUnlockMutex(_Xglobal_lock);
868
869 dpyPriv = calloc(1, sizeof *dpyPriv);
870 if (!dpyPriv)
871 return NULL;
872
873 dpyPriv->codes = XInitExtension(dpy, __glXExtensionName);
874 if (!dpyPriv->codes) {
875 free(dpyPriv);
876 return NULL;
877 }
878
879 dpyPriv->dpy = dpy;
880 dpyPriv->majorOpcode = dpyPriv->codes->major_opcode;
881 dpyPriv->serverGLXvendor = 0x0;
882 dpyPriv->serverGLXversion = 0x0;
883
884 /* See if the versions are compatible. This GLX implementation does not
885 * work with servers that only support GLX 1.0.
886 */
887 if (!QueryVersion(dpy, dpyPriv->majorOpcode,
888 &dpyPriv->majorVersion, &dpyPriv->minorVersion)
889 || (dpyPriv->majorVersion == 1 && dpyPriv->minorVersion < 1)) {
890 free(dpyPriv);
891 return NULL;
892 }
893
894 for (i = 0; i < __GLX_NUMBER_EVENTS; i++) {
895 XESetWireToEvent(dpy, dpyPriv->codes->first_event + i, __glXWireToEvent);
896 XESetEventToWire(dpy, dpyPriv->codes->first_event + i, __glXEventToWire);
897 }
898
899 XESetCloseDisplay(dpy, dpyPriv->codes->extension, __glXCloseDisplay);
900 XESetErrorString (dpy, dpyPriv->codes->extension, __glXErrorString);
901
902 dpyPriv->glXDrawHash = __glxHashCreate();
903
904 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
905 glx_direct = !env_var_as_boolean("LIBGL_ALWAYS_INDIRECT", false);
906 glx_accel = !env_var_as_boolean("LIBGL_ALWAYS_SOFTWARE", false);
907
908 dpyPriv->drawHash = __glxHashCreate();
909
910 /*
911 ** Initialize the direct rendering per display data and functions.
912 ** Note: This _must_ be done before calling any other DRI routines
913 ** (e.g., those called in AllocAndFetchScreenConfigs).
914 */
915 #if defined(GLX_USE_DRM)
916 if (glx_direct && glx_accel) {
917 #if defined(HAVE_DRI3)
918 if (!env_var_as_boolean("LIBGL_DRI3_DISABLE", false))
919 dpyPriv->dri3Display = dri3_create_display(dpy);
920 #endif /* HAVE_DRI3 */
921 dpyPriv->dri2Display = dri2CreateDisplay(dpy);
922 dpyPriv->driDisplay = driCreateDisplay(dpy);
923 }
924 #endif /* GLX_USE_DRM */
925 if (glx_direct)
926 dpyPriv->driswDisplay = driswCreateDisplay(dpy);
927 #endif /* GLX_DIRECT_RENDERING && !GLX_USE_APPLEGL */
928
929 #ifdef GLX_USE_APPLEGL
930 if (!applegl_create_display(dpyPriv)) {
931 free(dpyPriv);
932 return NULL;
933 }
934 #endif
935
936 #ifdef GLX_USE_WINDOWSGL
937 if (glx_direct && glx_accel)
938 dpyPriv->windowsdriDisplay = driwindowsCreateDisplay(dpy);
939 #endif
940
941 if (!AllocAndFetchScreenConfigs(dpy, dpyPriv)) {
942 free(dpyPriv);
943 return NULL;
944 }
945
946 __glX_send_client_info(dpyPriv);
947
948 /* Grab the lock again and add the dispay private, unless somebody
949 * beat us to initializing on this display in the meantime. */
950 _XLockMutex(_Xglobal_lock);
951
952 for (d = glx_displays; d; d = d->next) {
953 if (d->dpy == dpy) {
954 _XUnlockMutex(_Xglobal_lock);
955 glx_display_free(dpyPriv);
956 return d;
957 }
958 }
959
960 dpyPriv->next = glx_displays;
961 glx_displays = dpyPriv;
962
963 _XUnlockMutex(_Xglobal_lock);
964
965 return dpyPriv;
966 }
967
968 /*
969 ** Setup for sending a GLX command on dpy. Make sure the extension is
970 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
971 */
972 _X_HIDDEN CARD8
973 __glXSetupForCommand(Display * dpy)
974 {
975 struct glx_context *gc;
976 struct glx_display *priv;
977
978 /* If this thread has a current context, flush its rendering commands */
979 gc = __glXGetCurrentContext();
980 if (gc->currentDpy) {
981 /* Flush rendering buffer of the current context, if any */
982 (void) __glXFlushRenderBuffer(gc, gc->pc);
983
984 if (gc->currentDpy == dpy) {
985 /* Use opcode from gc because its right */
986 return gc->majorOpcode;
987 }
988 else {
989 /*
990 ** Have to get info about argument dpy because it might be to
991 ** a different server
992 */
993 }
994 }
995
996 /* Forced to lookup extension via the slow initialize route */
997 priv = __glXInitialize(dpy);
998 if (!priv) {
999 return 0;
1000 }
1001 return priv->majorOpcode;
1002 }
1003
1004 /**
1005 * Flush the drawing command transport buffer.
1006 *
1007 * \param ctx Context whose transport buffer is to be flushed.
1008 * \param pc Pointer to first unused buffer location.
1009 *
1010 * \todo
1011 * Modify this function to use \c ctx->pc instead of the explicit
1012 * \c pc parameter.
1013 */
1014 _X_HIDDEN GLubyte *
1015 __glXFlushRenderBuffer(struct glx_context * ctx, GLubyte * pc)
1016 {
1017 Display *const dpy = ctx->currentDpy;
1018 xcb_connection_t *c = XGetXCBConnection(dpy);
1019 const GLint size = pc - ctx->buf;
1020
1021 if ((dpy != NULL) && (size > 0)) {
1022 xcb_glx_render(c, ctx->currentContextTag, size,
1023 (const uint8_t *) ctx->buf);
1024 }
1025
1026 /* Reset pointer and return it */
1027 ctx->pc = ctx->buf;
1028 return ctx->pc;
1029 }
1030
1031
1032 /**
1033 * Send a portion of a GLXRenderLarge command to the server. The advantage of
1034 * this function over \c __glXSendLargeCommand is that callers can use the
1035 * data buffer in the GLX context and may be able to avoid allocating an
1036 * extra buffer. The disadvantage is the clients will have to do more
1037 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
1038 *
1039 * \sa __glXSendLargeCommand
1040 *
1041 * \param gc GLX context
1042 * \param requestNumber Which part of the whole command is this? The first
1043 * request is 1.
1044 * \param totalRequests How many requests will there be?
1045 * \param data Command data.
1046 * \param dataLen Size, in bytes, of the command data.
1047 */
1048 _X_HIDDEN void
1049 __glXSendLargeChunk(struct glx_context * gc, GLint requestNumber,
1050 GLint totalRequests, const GLvoid * data, GLint dataLen)
1051 {
1052 Display *dpy = gc->currentDpy;
1053 xcb_connection_t *c = XGetXCBConnection(dpy);
1054 xcb_glx_render_large(c, gc->currentContextTag, requestNumber,
1055 totalRequests, dataLen, data);
1056 }
1057
1058
1059 /**
1060 * Send a command that is too large for the GLXRender protocol request.
1061 *
1062 * Send a large command, one that is too large for some reason to
1063 * send using the GLXRender protocol request. One reason to send
1064 * a large command is to avoid copying the data.
1065 *
1066 * \param ctx GLX context
1067 * \param header Header data.
1068 * \param headerLen Size, in bytes, of the header data. It is assumed that
1069 * the header data will always be small enough to fit in
1070 * a single X protocol packet.
1071 * \param data Command data.
1072 * \param dataLen Size, in bytes, of the command data.
1073 */
1074 _X_HIDDEN void
1075 __glXSendLargeCommand(struct glx_context * ctx,
1076 const GLvoid * header, GLint headerLen,
1077 const GLvoid * data, GLint dataLen)
1078 {
1079 GLint maxSize;
1080 GLint totalRequests, requestNumber;
1081
1082 /*
1083 ** Calculate the maximum amount of data can be stuffed into a single
1084 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1085 ** packet size minus sz_xGLXRenderReq.
1086 */
1087 maxSize = (ctx->bufSize + sz_xGLXRenderReq) - sz_xGLXRenderLargeReq;
1088 totalRequests = 1 + (dataLen / maxSize);
1089 if (dataLen % maxSize)
1090 totalRequests++;
1091
1092 /*
1093 ** Send all of the command, except the large array, as one request.
1094 */
1095 assert(headerLen <= maxSize);
1096 __glXSendLargeChunk(ctx, 1, totalRequests, header, headerLen);
1097
1098 /*
1099 ** Send enough requests until the whole array is sent.
1100 */
1101 for (requestNumber = 2; requestNumber <= (totalRequests - 1);
1102 requestNumber++) {
1103 __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, maxSize);
1104 data = (const GLvoid *) (((const GLubyte *) data) + maxSize);
1105 dataLen -= maxSize;
1106 assert(dataLen > 0);
1107 }
1108
1109 assert(dataLen <= maxSize);
1110 __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, dataLen);
1111 }
1112
1113 /************************************************************************/
1114
1115 #ifdef DEBUG
1116 _X_HIDDEN void
1117 __glXDumpDrawBuffer(struct glx_context * ctx)
1118 {
1119 GLubyte *p = ctx->buf;
1120 GLubyte *end = ctx->pc;
1121 GLushort opcode, length;
1122
1123 while (p < end) {
1124 /* Fetch opcode */
1125 opcode = *((GLushort *) p);
1126 length = *((GLushort *) (p + 2));
1127 printf("%2x: %5d: ", opcode, length);
1128 length -= 4;
1129 p += 4;
1130 while (length > 0) {
1131 printf("%08x ", *((unsigned *) p));
1132 p += 4;
1133 length -= 4;
1134 }
1135 printf("\n");
1136 }
1137 }
1138 #endif