2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
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:
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.
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
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.
33 * GLX protocol interface boot-strap code.
35 * Direct rendering support added by Precision Insight, Inc.
37 * \author Kevin E. Martin <kevin@precisioninsight.com>
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"
48 #include "glxextensions.h"
51 #include <X11/Xlib-xcb.h>
58 void __glXDumpDrawBuffer(struct glx_context * ctx);
62 ** You can set this cell to 1 to force the gl drawing stuff to be
63 ** one command per packet
65 _X_HIDDEN int __glXDebug = 0;
67 /* Extension required boiler plate */
69 static const char __glXExtensionName[] = GLX_EXTENSION_NAME;
70 static struct glx_display *glx_displays;
72 static /* const */ char *error_list[] = {
78 "GLXBadCurrentWindow",
79 "GLXBadRenderRequest",
81 "GLXUnsupportedPrivateRequest",
84 "GLXBadCurrentDrawable",
88 #ifdef GLX_USE_APPLEGL
89 static char *__glXErrorString(Display *dpy, int code, XExtCodes *codes,
94 XEXT_GENERATE_ERROR_STRING(__glXErrorString, __glXExtensionName,
95 __GLX_NUMBER_ERRORS, error_list)
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.
107 __glXWireToEvent(Display *dpy, XEvent *event, xEvent *wire)
109 struct glx_display *glx_dpy = __glXInitialize(dpy);
114 switch ((wire->u.u.type & 0x7f) - glx_dpy->codes->first_event) {
115 case GLX_PbufferClobber:
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;
133 case GLX_BufferSwapComplete:
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;
146 if (awire->sbc < glxDraw->lastEventSbc)
147 glxDraw->eventSbcWrap += 0x100000000;
148 glxDraw->lastEventSbc = awire->sbc;
149 aevent->sbc = awire->sbc + glxDraw->eventSbcWrap;
153 /* client doesn't support server event */
160 /* We don't actually support this. It doesn't make sense for clients to
161 * send each other GLX events.
164 __glXEventToWire(Display *dpy, XEvent *event, xEvent *wire)
166 struct glx_display *glx_dpy = __glXInitialize(dpy);
171 switch (event->type) {
176 case GLX_EXCHANGE_COMPLETE_INTEL:
178 case GLX_COPY_COMPLETE_INTEL:
180 case GLX_FLIP_COMPLETE_INTEL:
183 /* client doesn't support server event */
190 /************************************************************************/
192 ** Free the per screen configs data as well as the array of
193 ** __glXScreenConfigs.
196 FreeScreenConfigs(struct glx_display * priv)
198 struct glx_screen *psc;
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);
207 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
208 if (psc->driScreen) {
209 psc->driScreen->destroyScreen(psc);
217 XFree((char *) priv->screens);
218 priv->screens = NULL;
222 glx_display_free(struct glx_display *priv)
224 struct glx_context *gc;
226 gc = __glXGetCurrentContext();
227 if (priv->dpy == gc->currentDpy) {
228 gc->vtable->destroy(gc);
229 __glXSetCurrentContextNull();
232 FreeScreenConfigs(priv);
233 if (priv->serverGLXvendor)
234 Xfree((char *) priv->serverGLXvendor);
235 if (priv->serverGLXversion)
236 Xfree((char *) priv->serverGLXversion);
238 __glxHashDestroy(priv->glXDrawHash);
240 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
241 __glxHashDestroy(priv->drawHash);
243 /* Free the direct rendering per display data */
244 if (priv->driswDisplay)
245 (*priv->driswDisplay->destroyDisplay) (priv->driswDisplay);
246 priv->driswDisplay = NULL;
248 if (priv->driDisplay)
249 (*priv->driDisplay->destroyDisplay) (priv->driDisplay);
250 priv->driDisplay = NULL;
252 if (priv->dri2Display)
253 (*priv->dri2Display->destroyDisplay) (priv->dri2Display);
254 priv->dri2Display = NULL;
257 Xfree((char *) priv);
261 __glXCloseDisplay(Display * dpy, XExtCodes * codes)
263 struct glx_display *priv, **prev;
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) {
273 _XUnlockMutex(_Xglobal_lock);
275 glx_display_free(priv);
281 ** Query the version of the GLX extension. This procedure works even if
282 ** the client extension is not completely set up.
285 QueryVersion(Display * dpy, int opcode, int *major, int *minor)
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
299 if (reply->major_version != GLX_MAJOR_VERSION) {
303 *major = reply->major_version;
304 *minor = min(reply->minor_version, GLX_MINOR_VERSION);
308 xGLXQueryVersionReq *req;
309 xGLXQueryVersionReply reply;
311 /* Send the glXQueryVersion request */
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);
322 if (reply.majorVersion != GLX_MAJOR_VERSION) {
324 ** The server does not support the same major release as this
329 *major = reply.majorVersion;
330 *minor = min(reply.minorVersion, GLX_MINOR_VERSION);
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.
341 IGNORE_GLX_SWAP_METHOD_OML = 0x8060
346 convert_from_x_visual_type(int visualType)
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
354 if (visualType < ARRAY_SIZE(glx_visual_types))
355 return glx_visual_types[visualType];
361 * getVisualConfigs uses the !tagged_only path.
362 * getFBConfigs uses the tagged_only path.
365 __glXInitializeVisualConfigFromTags(struct glx_config * config, int count,
366 const INT32 * bp, Bool tagged_only,
367 Bool fbconfig_style_tags)
372 /* Copy in the first set of properties */
373 config->visualID = *bp++;
375 config->visualType = convert_from_x_visual_type(*bp++);
377 config->rgbMode = *bp++;
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++;
388 config->doubleBufferMode = *bp++;
389 config->stereoMode = *bp++;
391 config->rgbBits = *bp++;
392 config->depthBits = *bp++;
393 config->stencilBits = *bp++;
394 config->numAuxBuffers = *bp++;
395 config->level = *bp++;
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. */
403 count -= __GLX_MIN_CONFIG_PROPS;
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.
413 #define FETCH_OR_SET(tag) \
414 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
416 for (i = 0; i < count; i += 2) {
417 long int tag = *bp++;
421 FETCH_OR_SET(rgbMode);
423 case GLX_BUFFER_SIZE:
424 config->rgbBits = *bp++;
427 config->level = *bp++;
429 case GLX_DOUBLEBUFFER:
430 FETCH_OR_SET(doubleBufferMode);
433 FETCH_OR_SET(stereoMode);
435 case GLX_AUX_BUFFERS:
436 config->numAuxBuffers = *bp++;
439 config->redBits = *bp++;
442 config->greenBits = *bp++;
445 config->blueBits = *bp++;
448 config->alphaBits = *bp++;
451 config->depthBits = *bp++;
453 case GLX_STENCIL_SIZE:
454 config->stencilBits = *bp++;
456 case GLX_ACCUM_RED_SIZE:
457 config->accumRedBits = *bp++;
459 case GLX_ACCUM_GREEN_SIZE:
460 config->accumGreenBits = *bp++;
462 case GLX_ACCUM_BLUE_SIZE:
463 config->accumBlueBits = *bp++;
465 case GLX_ACCUM_ALPHA_SIZE:
466 config->accumAlphaBits = *bp++;
468 case GLX_VISUAL_CAVEAT_EXT:
469 config->visualRating = *bp++;
471 case GLX_X_VISUAL_TYPE:
472 config->visualType = *bp++;
474 case GLX_TRANSPARENT_TYPE:
475 config->transparentPixel = *bp++;
477 case GLX_TRANSPARENT_INDEX_VALUE:
478 config->transparentIndex = *bp++;
480 case GLX_TRANSPARENT_RED_VALUE:
481 config->transparentRed = *bp++;
483 case GLX_TRANSPARENT_GREEN_VALUE:
484 config->transparentGreen = *bp++;
486 case GLX_TRANSPARENT_BLUE_VALUE:
487 config->transparentBlue = *bp++;
489 case GLX_TRANSPARENT_ALPHA_VALUE:
490 config->transparentAlpha = *bp++;
493 config->visualID = *bp++;
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;
502 case GLX_RENDER_TYPE:
503 config->renderType = *bp++;
505 case GLX_X_RENDERABLE:
506 config->xRenderable = *bp++;
508 case GLX_FBCONFIG_ID:
509 config->fbconfigID = *bp++;
511 case GLX_MAX_PBUFFER_WIDTH:
512 config->maxPbufferWidth = *bp++;
514 case GLX_MAX_PBUFFER_HEIGHT:
515 config->maxPbufferHeight = *bp++;
517 case GLX_MAX_PBUFFER_PIXELS:
518 config->maxPbufferPixels = *bp++;
520 #ifndef GLX_USE_APPLEGL
521 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX:
522 config->optimalPbufferWidth = *bp++;
524 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX:
525 config->optimalPbufferHeight = *bp++;
527 case GLX_VISUAL_SELECT_GROUP_SGIX:
528 config->visualSelectGroup = *bp++;
530 case GLX_SWAP_METHOD_OML:
531 config->swapMethod = *bp++;
534 case GLX_SAMPLE_BUFFERS_SGIS:
535 config->sampleBuffers = *bp++;
537 case GLX_SAMPLES_SGIS:
538 config->samples = *bp++;
540 #ifdef GLX_USE_APPLEGL
541 case IGNORE_GLX_SWAP_METHOD_OML:
542 /* We ignore this tag. See the comment above this function. */
546 case GLX_BIND_TO_TEXTURE_RGB_EXT:
547 config->bindToTextureRgb = *bp++;
549 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
550 config->bindToTextureRgba = *bp++;
552 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
553 config->bindToMipmapTexture = *bp++;
555 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
556 config->bindToTextureTargets = *bp++;
558 case GLX_Y_INVERTED_EXT:
559 config->yInverted = *bp++;
562 case GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT:
563 config->sRGBCapable = *bp++;
567 if (fbconfig_style_tags)
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);
579 /* Ignore the unrecognized tag's value */
587 (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
590 static struct glx_config *
591 createConfigsFromProperties(Display * dpy, int nvisuals, int nprops,
592 int screen, GLboolean tagged_only)
594 INT32 buf[__GLX_TOTAL_CONFIG], *props;
596 struct glx_config *modes, *m;
602 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
604 /* Check number of properties */
605 if (nprops < __GLX_MIN_CONFIG_PROPS || nprops > __GLX_MAX_CONFIG_PROPS)
608 /* Allocate memory for our config structure */
609 modes = glx_config_create_list(nvisuals);
613 prop_size = nprops * __GLX_SIZE_INT32;
614 if (prop_size <= sizeof(buf))
617 props = Xmalloc(prop_size);
619 /* Read each config structure and convert it into our format */
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;
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.
632 m->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
634 __glXInitializeVisualConfigFromTags(m, nprops, props,
635 tagged_only, GL_TRUE);
647 getVisualConfigs(struct glx_screen *psc,
648 struct glx_display *priv, int screen)
650 xGLXGetVisualConfigsReq *req;
651 xGLXGetVisualConfigsReply reply;
652 Display *dpy = priv->dpy;
657 GetReq(GLXGetVisualConfigs, req);
658 req->reqType = priv->majorOpcode;
659 req->glxCode = X_GLXGetVisualConfigs;
660 req->screen = screen;
662 if (!_XReply(dpy, (xReply *) & reply, 0, False))
665 psc->visuals = createConfigsFromProperties(dpy,
672 return psc->visuals != NULL;
676 getFBConfigs(struct glx_screen *psc, struct glx_display *priv, int screen)
678 xGLXGetFBConfigsReq *fb_req;
679 xGLXGetFBConfigsSGIXReq *sgi_req;
680 xGLXVendorPrivateWithReplyReq *vpreq;
681 xGLXGetFBConfigsReply reply;
682 Display *dpy = priv->dpy;
685 __glXQueryServerString(dpy, priv->majorOpcode, screen, GLX_EXTENSIONS);
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;
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;
709 if (!_XReply(dpy, (xReply *) & reply, 0, False))
712 psc->configs = createConfigsFromProperties(dpy,
714 reply.numAttribs * 2,
719 return psc->configs != NULL;
723 glx_screen_init(struct glx_screen *psc,
724 int screen, struct glx_display * priv)
726 /* Initialize per screen dynamic client GLX extensions */
727 psc->ext_list_first_time = GL_TRUE;
729 psc->dpy = priv->dpy;
732 getVisualConfigs(psc, priv, screen);
733 getFBConfigs(psc, priv, screen);
739 glx_screen_cleanup(struct glx_screen *psc)
742 glx_config_destroy_list(psc->configs);
743 if (psc->effectiveGLXexts)
744 Xfree(psc->effectiveGLXexts);
745 psc->configs = NULL; /* NOTE: just for paranoia */
748 glx_config_destroy_list(psc->visuals);
749 psc->visuals = NULL; /* NOTE: just for paranoia */
751 Xfree((char *) psc->serverGLXexts);
755 ** Allocate the memory for the per screen configs for each screen.
756 ** If that works then fetch the per screen configs data.
759 AllocAndFetchScreenConfigs(Display * dpy, struct glx_display * priv)
761 struct glx_screen *psc;
765 ** First allocate memory for the array of per screen configs.
767 screens = ScreenCount(dpy);
768 priv->screens = Xmalloc(screens * sizeof *priv->screens);
772 priv->serverGLXversion =
773 __glXQueryServerString(dpy, priv->majorOpcode, 0, GLX_VERSION);
774 if (priv->serverGLXversion == NULL) {
775 FreeScreenConfigs(priv);
779 for (i = 0; i < screens; i++, psc++) {
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);
789 #if defined(GLX_USE_APPLEGL)
791 psc = applegl_create_screen(i, priv);
794 psc = indirect_create_screen(i, priv);
796 priv->screens[i] = psc;
803 ** Initialize the client side extension code.
805 _X_HIDDEN struct glx_display *
806 __glXInitialize(Display * dpy)
808 struct glx_display *dpyPriv, *d;
809 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
810 Bool glx_direct, glx_accel;
814 _XLockMutex(_Xglobal_lock);
816 for (dpyPriv = glx_displays; dpyPriv; dpyPriv = dpyPriv->next) {
817 if (dpyPriv->dpy == dpy) {
818 _XUnlockMutex(_Xglobal_lock);
823 /* Drop the lock while we create the display private. */
824 _XUnlockMutex(_Xglobal_lock);
826 dpyPriv = Xcalloc(1, sizeof *dpyPriv);
830 dpyPriv->codes = XInitExtension(dpy, __glXExtensionName);
831 if (!dpyPriv->codes) {
833 _XUnlockMutex(_Xglobal_lock);
838 dpyPriv->majorOpcode = dpyPriv->codes->major_opcode;
839 dpyPriv->serverGLXvendor = 0x0;
840 dpyPriv->serverGLXversion = 0x0;
842 /* See if the versions are compatible. This GLX implementation does not
843 * work with servers that only support GLX 1.0.
845 if (!QueryVersion(dpy, dpyPriv->majorOpcode,
846 &dpyPriv->majorVersion, &dpyPriv->minorVersion)
847 || (dpyPriv->majorVersion == 1 && dpyPriv->minorVersion < 1)) {
849 _XUnlockMutex(_Xglobal_lock);
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);
858 XESetCloseDisplay(dpy, dpyPriv->codes->extension, __glXCloseDisplay);
859 XESetErrorString (dpy, dpyPriv->codes->extension,__glXErrorString);
861 dpyPriv->glXDrawHash = __glxHashCreate();
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);
867 dpyPriv->drawHash = __glxHashCreate();
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).
874 if (glx_direct && glx_accel) {
875 dpyPriv->dri2Display = dri2CreateDisplay(dpy);
876 dpyPriv->driDisplay = driCreateDisplay(dpy);
879 dpyPriv->driswDisplay = driswCreateDisplay(dpy);
882 #ifdef GLX_USE_APPLEGL
883 if (!applegl_create_display(dpyPriv)) {
888 if (!AllocAndFetchScreenConfigs(dpy, dpyPriv)) {
894 __glX_send_client_info(dpyPriv);
896 __glXClientInfo(dpy, dpyPriv->majorOpcode);
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);
903 for (d = glx_displays; d; d = d->next) {
905 _XUnlockMutex(_Xglobal_lock);
906 glx_display_free(dpyPriv);
911 dpyPriv->next = glx_displays;
912 glx_displays = dpyPriv;
914 _XUnlockMutex(_Xglobal_lock);
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.
924 __glXSetupForCommand(Display * dpy)
926 struct glx_context *gc;
927 struct glx_display *priv;
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);
935 if (gc->currentDpy == dpy) {
936 /* Use opcode from gc because its right */
937 return gc->majorOpcode;
941 ** Have to get info about argument dpy because it might be to
942 ** a different server
947 /* Forced to lookup extension via the slow initialize route */
948 priv = __glXInitialize(dpy);
952 return priv->majorOpcode;
956 * Flush the drawing command transport buffer.
958 * \param ctx Context whose transport buffer is to be flushed.
959 * \param pc Pointer to first unused buffer location.
962 * Modify this function to use \c ctx->pc instead of the explicit
966 __glXFlushRenderBuffer(struct glx_context * ctx, GLubyte * pc)
968 Display *const dpy = ctx->currentDpy;
970 xcb_connection_t *c = XGetXCBConnection(dpy);
974 const GLint size = pc - ctx->buf;
976 if ((dpy != NULL) && (size > 0)) {
978 xcb_glx_render(c, ctx->currentContextTag, size,
979 (const uint8_t *) ctx->buf);
981 /* Send the entire buffer as an X request */
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);
994 /* Reset pointer and return it */
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.).
1007 * \sa __glXSendLargeCommand
1009 * \param gc GLX context
1010 * \param requestNumber Which part of the whole command is this? The first
1012 * \param totalRequests How many requests will there be?
1013 * \param data Command data.
1014 * \param dataLen Size, in bytes, of the command data.
1017 __glXSendLargeChunk(struct glx_context * gc, GLint requestNumber,
1018 GLint totalRequests, const GLvoid * data, GLint dataLen)
1020 Display *dpy = gc->currentDpy;
1022 xcb_connection_t *c = XGetXCBConnection(dpy);
1023 xcb_glx_render_large(c, gc->currentContextTag, requestNumber,
1024 totalRequests, dataLen, data);
1026 xGLXRenderLargeReq *req;
1028 if (requestNumber == 1) {
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);
1042 if (requestNumber == totalRequests) {
1046 #endif /* USE_XCB */
1051 * Send a command that is too large for the GLXRender protocol request.
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.
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.
1066 __glXSendLargeCommand(struct glx_context * ctx,
1067 const GLvoid * header, GLint headerLen,
1068 const GLvoid * data, GLint dataLen)
1071 GLint totalRequests, requestNumber;
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.
1078 maxSize = (ctx->bufSize + sz_xGLXRenderReq) - sz_xGLXRenderLargeReq;
1079 totalRequests = 1 + (dataLen / maxSize);
1080 if (dataLen % maxSize)
1084 ** Send all of the command, except the large array, as one request.
1086 assert(headerLen <= maxSize);
1087 __glXSendLargeChunk(ctx, 1, totalRequests, header, headerLen);
1090 ** Send enough requests until the whole array is sent.
1092 for (requestNumber = 2; requestNumber <= (totalRequests - 1);
1094 __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, maxSize);
1095 data = (const GLvoid *) (((const GLubyte *) data) + maxSize);
1097 assert(dataLen > 0);
1100 assert(dataLen <= maxSize);
1101 __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, dataLen);
1104 /************************************************************************/
1108 __glXDumpDrawBuffer(struct glx_context * ctx)
1110 GLubyte *p = ctx->buf;
1111 GLubyte *end = ctx->pc;
1112 GLushort opcode, length;
1116 opcode = *((GLushort *) p);
1117 length = *((GLushort *) (p + 2));
1118 printf("%2x: %5d: ", opcode, length);
1121 while (length > 0) {
1122 printf("%08x ", *((unsigned *) p));