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 #include <X11/extensions/dri2proto.h>
45 #ifdef GLX_USE_APPLEGL
46 #include "apple_glx.h"
47 #include "apple_visual.h"
49 #include "glxextensions.h"
52 #include <X11/Xlib-xcb.h>
59 void __glXDumpDrawBuffer(struct glx_context * ctx);
63 ** You can set this cell to 1 to force the gl drawing stuff to be
64 ** one command per packet
66 _X_HIDDEN int __glXDebug = 0;
68 /* Extension required boiler plate */
70 static const char __glXExtensionName[] = GLX_EXTENSION_NAME;
71 static struct glx_display *glx_displays;
73 static /* const */ char *error_list[] = {
79 "GLXBadCurrentWindow",
80 "GLXBadRenderRequest",
82 "GLXUnsupportedPrivateRequest",
85 "GLXBadCurrentDrawable",
89 #ifdef GLX_USE_APPLEGL
90 static char *__glXErrorString(Display *dpy, int code, XExtCodes *codes,
95 XEXT_GENERATE_ERROR_STRING(__glXErrorString, __glXExtensionName,
96 __GLX_NUMBER_ERRORS, error_list)
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.
108 __glXWireToEvent(Display *dpy, XEvent *event, xEvent *wire)
110 struct glx_display *glx_dpy = __glXInitialize(dpy);
115 switch ((wire->u.u.type & 0x7f) - glx_dpy->codes->first_event) {
116 case GLX_PbufferClobber:
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;
134 /* No easy symbol to test for this, as GLX_BufferSwapComplete is
135 * defined in the local glx.h header, but the
136 * xGLXBufferSwapComplete typedef is only available in new versions
137 * of the external glxproto.h header, which doesn't have any
138 * testable versioning define.
140 * I'll use the related DRI2 define, in the hope that we won't
141 * receive these events unless we know how to ask for them:
143 #ifdef X_DRI2SwapBuffers
144 case GLX_BufferSwapComplete:
146 GLXBufferSwapComplete *aevent = (GLXBufferSwapComplete *)event;
147 xGLXBufferSwapComplete *awire = (xGLXBufferSwapComplete *)wire;
148 aevent->event_type = awire->event_type;
149 aevent->drawable = awire->drawable;
150 aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
151 aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
152 aevent->sbc = ((CARD64)awire->sbc_hi << 32) | awire->sbc_lo;
157 /* client doesn't support server event */
164 /* We don't actually support this. It doesn't make sense for clients to
165 * send each other GLX events.
168 __glXEventToWire(Display *dpy, XEvent *event, xEvent *wire)
170 struct glx_display *glx_dpy = __glXInitialize(dpy);
175 switch (event->type) {
180 case GLX_EXCHANGE_COMPLETE_INTEL:
182 case GLX_COPY_COMPLETE_INTEL:
184 case GLX_FLIP_COMPLETE_INTEL:
187 /* client doesn't support server event */
194 /************************************************************************/
196 ** Free the per screen configs data as well as the array of
197 ** __glXScreenConfigs.
200 FreeScreenConfigs(struct glx_display * priv)
202 struct glx_screen *psc;
205 /* Free screen configuration information */
206 screens = ScreenCount(priv->dpy);
207 for (i = 0; i < screens; i++) {
208 psc = priv->screens[i];
210 glx_config_destroy_list(psc->configs);
211 if (psc->effectiveGLXexts)
212 Xfree(psc->effectiveGLXexts);
213 psc->configs = NULL; /* NOTE: just for paranoia */
216 glx_config_destroy_list(psc->visuals);
217 psc->visuals = NULL; /* NOTE: just for paranoia */
219 Xfree((char *) psc->serverGLXexts);
221 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
222 if (psc->driScreen) {
223 psc->driScreen->destroyScreen(psc);
231 XFree((char *) priv->screens);
232 priv->screens = NULL;
236 ** Release the private memory referred to in a display private
237 ** structure. The caller will free the extension structure.
240 __glXCloseDisplay(Display * dpy, XExtCodes * codes)
242 struct glx_display *priv, **prev;
243 struct glx_context *gc;
245 _XLockMutex(_Xglobal_lock);
246 prev = &glx_displays;
247 for (priv = glx_displays; priv; prev = &priv->next, priv = priv->next) {
248 if (priv->dpy == dpy) {
249 (*prev) = priv->next;
253 _XUnlockMutex(_Xglobal_lock);
255 gc = __glXGetCurrentContext();
256 if (dpy == gc->currentDpy) {
257 gc->vtable->destroy(gc);
258 __glXSetCurrentContextNull();
261 FreeScreenConfigs(priv);
262 if (priv->serverGLXvendor)
263 Xfree((char *) priv->serverGLXvendor);
264 if (priv->serverGLXversion)
265 Xfree((char *) priv->serverGLXversion);
267 __glxHashDestroy(priv->drawHash);
269 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
270 /* Free the direct rendering per display data */
271 if (priv->driswDisplay)
272 (*priv->driswDisplay->destroyDisplay) (priv->driswDisplay);
273 priv->driswDisplay = NULL;
275 if (priv->driDisplay)
276 (*priv->driDisplay->destroyDisplay) (priv->driDisplay);
277 priv->driDisplay = NULL;
279 if (priv->dri2Display)
280 (*priv->dri2Display->destroyDisplay) (priv->dri2Display);
281 priv->dri2Display = NULL;
284 Xfree((char *) priv);
290 ** Query the version of the GLX extension. This procedure works even if
291 ** the client extension is not completely set up.
294 QueryVersion(Display * dpy, int opcode, int *major, int *minor)
297 xcb_connection_t *c = XGetXCBConnection(dpy);
298 xcb_glx_query_version_reply_t *reply = xcb_glx_query_version_reply(c,
299 xcb_glx_query_version
305 if (reply->major_version != GLX_MAJOR_VERSION) {
309 *major = reply->major_version;
310 *minor = min(reply->minor_version, GLX_MINOR_VERSION);
314 xGLXQueryVersionReq *req;
315 xGLXQueryVersionReply reply;
317 /* Send the glXQueryVersion request */
319 GetReq(GLXQueryVersion, req);
320 req->reqType = opcode;
321 req->glxCode = X_GLXQueryVersion;
322 req->majorVersion = GLX_MAJOR_VERSION;
323 req->minorVersion = GLX_MINOR_VERSION;
324 _XReply(dpy, (xReply *) & reply, 0, False);
328 if (reply.majorVersion != GLX_MAJOR_VERSION) {
330 ** The server does not support the same major release as this
335 *major = reply.majorVersion;
336 *minor = min(reply.minorVersion, GLX_MINOR_VERSION);
342 * We don't want to enable this GLX_OML_swap_method in glxext.h,
343 * because we can't support it. The X server writes it out though,
344 * so we should handle it somehow, to avoid false warnings.
347 IGNORE_GLX_SWAP_METHOD_OML = 0x8060
352 convert_from_x_visual_type(int visualType)
354 static const int glx_visual_types[] = {
355 GLX_STATIC_GRAY, GLX_GRAY_SCALE,
356 GLX_STATIC_COLOR, GLX_PSEUDO_COLOR,
357 GLX_TRUE_COLOR, GLX_DIRECT_COLOR
360 if (visualType < ARRAY_SIZE(glx_visual_types))
361 return glx_visual_types[visualType];
367 * getVisualConfigs uses the !tagged_only path.
368 * getFBConfigs uses the tagged_only path.
371 __glXInitializeVisualConfigFromTags(struct glx_config * config, int count,
372 const INT32 * bp, Bool tagged_only,
373 Bool fbconfig_style_tags)
378 /* Copy in the first set of properties */
379 config->visualID = *bp++;
381 config->visualType = convert_from_x_visual_type(*bp++);
383 config->rgbMode = *bp++;
385 config->redBits = *bp++;
386 config->greenBits = *bp++;
387 config->blueBits = *bp++;
388 config->alphaBits = *bp++;
389 config->accumRedBits = *bp++;
390 config->accumGreenBits = *bp++;
391 config->accumBlueBits = *bp++;
392 config->accumAlphaBits = *bp++;
394 config->doubleBufferMode = *bp++;
395 config->stereoMode = *bp++;
397 config->rgbBits = *bp++;
398 config->depthBits = *bp++;
399 config->stencilBits = *bp++;
400 config->numAuxBuffers = *bp++;
401 config->level = *bp++;
403 #ifdef GLX_USE_APPLEGL
404 /* AppleSGLX supports pixmap and pbuffers with all config. */
405 config->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
406 /* Unfortunately this can create an ABI compatibility problem. */
409 count -= __GLX_MIN_CONFIG_PROPS;
414 ** Additional properties may be in a list at the end
415 ** of the reply. They are in pairs of property type
416 ** and property value.
419 #define FETCH_OR_SET(tag) \
420 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
422 for (i = 0; i < count; i += 2) {
423 long int tag = *bp++;
427 FETCH_OR_SET(rgbMode);
429 case GLX_BUFFER_SIZE:
430 config->rgbBits = *bp++;
433 config->level = *bp++;
435 case GLX_DOUBLEBUFFER:
436 FETCH_OR_SET(doubleBufferMode);
439 FETCH_OR_SET(stereoMode);
441 case GLX_AUX_BUFFERS:
442 config->numAuxBuffers = *bp++;
445 config->redBits = *bp++;
448 config->greenBits = *bp++;
451 config->blueBits = *bp++;
454 config->alphaBits = *bp++;
457 config->depthBits = *bp++;
459 case GLX_STENCIL_SIZE:
460 config->stencilBits = *bp++;
462 case GLX_ACCUM_RED_SIZE:
463 config->accumRedBits = *bp++;
465 case GLX_ACCUM_GREEN_SIZE:
466 config->accumGreenBits = *bp++;
468 case GLX_ACCUM_BLUE_SIZE:
469 config->accumBlueBits = *bp++;
471 case GLX_ACCUM_ALPHA_SIZE:
472 config->accumAlphaBits = *bp++;
474 case GLX_VISUAL_CAVEAT_EXT:
475 config->visualRating = *bp++;
477 case GLX_X_VISUAL_TYPE:
478 config->visualType = *bp++;
480 case GLX_TRANSPARENT_TYPE:
481 config->transparentPixel = *bp++;
483 case GLX_TRANSPARENT_INDEX_VALUE:
484 config->transparentIndex = *bp++;
486 case GLX_TRANSPARENT_RED_VALUE:
487 config->transparentRed = *bp++;
489 case GLX_TRANSPARENT_GREEN_VALUE:
490 config->transparentGreen = *bp++;
492 case GLX_TRANSPARENT_BLUE_VALUE:
493 config->transparentBlue = *bp++;
495 case GLX_TRANSPARENT_ALPHA_VALUE:
496 config->transparentAlpha = *bp++;
499 config->visualID = *bp++;
501 case GLX_DRAWABLE_TYPE:
502 config->drawableType = *bp++;
503 #ifdef GLX_USE_APPLEGL
504 /* AppleSGLX supports pixmap and pbuffers with all config. */
505 config->drawableType |= GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
508 case GLX_RENDER_TYPE:
509 config->renderType = *bp++;
511 case GLX_X_RENDERABLE:
512 config->xRenderable = *bp++;
514 case GLX_FBCONFIG_ID:
515 config->fbconfigID = *bp++;
517 case GLX_MAX_PBUFFER_WIDTH:
518 config->maxPbufferWidth = *bp++;
520 case GLX_MAX_PBUFFER_HEIGHT:
521 config->maxPbufferHeight = *bp++;
523 case GLX_MAX_PBUFFER_PIXELS:
524 config->maxPbufferPixels = *bp++;
526 #ifndef GLX_USE_APPLEGL
527 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX:
528 config->optimalPbufferWidth = *bp++;
530 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX:
531 config->optimalPbufferHeight = *bp++;
533 case GLX_VISUAL_SELECT_GROUP_SGIX:
534 config->visualSelectGroup = *bp++;
536 case GLX_SWAP_METHOD_OML:
537 config->swapMethod = *bp++;
540 case GLX_SAMPLE_BUFFERS_SGIS:
541 config->sampleBuffers = *bp++;
543 case GLX_SAMPLES_SGIS:
544 config->samples = *bp++;
546 #ifdef GLX_USE_APPLEGL
547 case IGNORE_GLX_SWAP_METHOD_OML:
548 /* We ignore this tag. See the comment above this function. */
552 case GLX_BIND_TO_TEXTURE_RGB_EXT:
553 config->bindToTextureRgb = *bp++;
555 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
556 config->bindToTextureRgba = *bp++;
558 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
559 config->bindToMipmapTexture = *bp++;
561 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
562 config->bindToTextureTargets = *bp++;
564 case GLX_Y_INVERTED_EXT:
565 config->yInverted = *bp++;
569 if (fbconfig_style_tags)
576 if(getenv("LIBGL_DIAGNOSTIC")) {
577 long int tagvalue = *bp++;
578 fprintf(stderr, "WARNING: unknown GLX tag from server: "
579 "tag 0x%lx value 0x%lx\n", tag, tagvalue);
581 /* Ignore the unrecognized tag's value */
589 (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
592 static struct glx_config *
593 createConfigsFromProperties(Display * dpy, int nvisuals, int nprops,
594 int screen, GLboolean tagged_only)
596 INT32 buf[__GLX_TOTAL_CONFIG], *props;
598 struct glx_config *modes, *m;
604 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
606 /* Check number of properties */
607 if (nprops < __GLX_MIN_CONFIG_PROPS || nprops > __GLX_MAX_CONFIG_PROPS)
610 /* Allocate memory for our config structure */
611 modes = glx_config_create_list(nvisuals);
615 prop_size = nprops * __GLX_SIZE_INT32;
616 if (prop_size <= sizeof(buf))
619 props = Xmalloc(prop_size);
621 /* Read each config structure and convert it into our format */
623 for (i = 0; i < nvisuals; i++) {
624 _XRead(dpy, (char *) props, prop_size);
625 #ifdef GLX_USE_APPLEGL
626 /* Older X servers don't send this so we default it here. */
627 m->drawableType = GLX_WINDOW_BIT;
630 * The XQuartz 2.3.2.1 X server doesn't set this properly, so
631 * set the proper bits here.
632 * AppleSGLX supports windows, pixmaps, and pbuffers with all config.
634 m->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
636 __glXInitializeVisualConfigFromTags(m, nprops, props,
637 tagged_only, GL_TRUE);
649 getVisualConfigs(struct glx_screen *psc,
650 struct glx_display *priv, int screen)
652 xGLXGetVisualConfigsReq *req;
653 xGLXGetVisualConfigsReply reply;
654 Display *dpy = priv->dpy;
659 GetReq(GLXGetVisualConfigs, req);
660 req->reqType = priv->majorOpcode;
661 req->glxCode = X_GLXGetVisualConfigs;
662 req->screen = screen;
664 if (!_XReply(dpy, (xReply *) & reply, 0, False))
667 psc->visuals = createConfigsFromProperties(dpy,
674 return psc->visuals != NULL;
678 getFBConfigs(struct glx_screen *psc, struct glx_display *priv, int screen)
680 xGLXGetFBConfigsReq *fb_req;
681 xGLXGetFBConfigsSGIXReq *sgi_req;
682 xGLXVendorPrivateWithReplyReq *vpreq;
683 xGLXGetFBConfigsReply reply;
684 Display *dpy = priv->dpy;
687 __glXQueryServerString(dpy, priv->majorOpcode, screen, GLX_EXTENSIONS);
692 if (atof(priv->serverGLXversion) >= 1.3) {
693 GetReq(GLXGetFBConfigs, fb_req);
694 fb_req->reqType = priv->majorOpcode;
695 fb_req->glxCode = X_GLXGetFBConfigs;
696 fb_req->screen = screen;
698 else if (strstr(psc->serverGLXexts, "GLX_SGIX_fbconfig") != NULL) {
699 GetReqExtra(GLXVendorPrivateWithReply,
700 sz_xGLXGetFBConfigsSGIXReq +
701 sz_xGLXVendorPrivateWithReplyReq, vpreq);
702 sgi_req = (xGLXGetFBConfigsSGIXReq *) vpreq;
703 sgi_req->reqType = priv->majorOpcode;
704 sgi_req->glxCode = X_GLXVendorPrivateWithReply;
705 sgi_req->vendorCode = X_GLXvop_GetFBConfigsSGIX;
706 sgi_req->screen = screen;
711 if (!_XReply(dpy, (xReply *) & reply, 0, False))
714 psc->configs = createConfigsFromProperties(dpy,
716 reply.numAttribs * 2,
721 return psc->configs != NULL;
725 glx_screen_init(struct glx_screen *psc,
726 int screen, struct glx_display * priv)
728 /* Initialize per screen dynamic client GLX extensions */
729 psc->ext_list_first_time = GL_TRUE;
731 psc->dpy = priv->dpy;
734 getVisualConfigs(psc, priv, screen);
735 getFBConfigs(psc, priv, screen);
741 ** Allocate the memory for the per screen configs for each screen.
742 ** If that works then fetch the per screen configs data.
745 AllocAndFetchScreenConfigs(Display * dpy, struct glx_display * priv)
747 struct glx_screen *psc;
751 ** First allocate memory for the array of per screen configs.
753 screens = ScreenCount(dpy);
754 priv->screens = Xmalloc(screens * sizeof *priv->screens);
758 priv->serverGLXversion =
759 __glXQueryServerString(dpy, priv->majorOpcode, 0, GLX_VERSION);
760 if (priv->serverGLXversion == NULL) {
761 FreeScreenConfigs(priv);
765 for (i = 0; i < screens; i++, psc++) {
767 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
768 if (priv->dri2Display)
769 psc = (*priv->dri2Display->createScreen) (i, priv);
770 if (psc == NULL && priv->driDisplay)
771 psc = (*priv->driDisplay->createScreen) (i, priv);
772 if (psc == NULL && priv->driswDisplay)
773 psc = (*priv->driswDisplay->createScreen) (i, priv);
775 #if defined(GLX_USE_APPLEGL)
776 if (psc == NULL && priv->appleglDisplay)
777 psc = (*priv->appleglDisplay->createScreen) (i, priv);
780 psc = indirect_create_screen(i, priv);
781 priv->screens[i] = psc;
788 ** Initialize the client side extension code.
790 _X_HIDDEN struct glx_display *
791 __glXInitialize(Display * dpy)
793 struct glx_display *dpyPriv;
794 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
795 Bool glx_direct, glx_accel;
799 _XLockMutex(_Xglobal_lock);
801 for (dpyPriv = glx_displays; dpyPriv; dpyPriv = dpyPriv->next) {
802 if (dpyPriv->dpy == dpy) {
803 _XUnlockMutex(_Xglobal_lock);
808 dpyPriv = Xcalloc(1, sizeof *dpyPriv);
812 dpyPriv->codes = XInitExtension(dpy, __glXExtensionName);
813 if (!dpyPriv->codes) {
815 _XUnlockMutex(_Xglobal_lock);
820 dpyPriv->majorOpcode = dpyPriv->codes->major_opcode;
821 dpyPriv->serverGLXvendor = 0x0;
822 dpyPriv->serverGLXversion = 0x0;
824 /* See if the versions are compatible */
825 if (!QueryVersion(dpy, dpyPriv->majorOpcode,
826 &dpyPriv->majorVersion, &dpyPriv->minorVersion)) {
828 _XUnlockMutex(_Xglobal_lock);
832 for (i = 0; i < __GLX_NUMBER_EVENTS; i++) {
833 XESetWireToEvent(dpy, dpyPriv->codes->first_event + i, __glXWireToEvent);
834 XESetEventToWire(dpy, dpyPriv->codes->first_event + i, __glXEventToWire);
837 XESetCloseDisplay(dpy, dpyPriv->codes->extension, __glXCloseDisplay);
838 XESetErrorString (dpy, dpyPriv->codes->extension,__glXErrorString);
840 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
841 glx_direct = (getenv("LIBGL_ALWAYS_INDIRECT") == NULL);
842 glx_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
844 dpyPriv->drawHash = __glxHashCreate();
847 ** Initialize the direct rendering per display data and functions.
848 ** Note: This _must_ be done before calling any other DRI routines
849 ** (e.g., those called in AllocAndFetchScreenConfigs).
851 if (glx_direct && glx_accel) {
852 dpyPriv->dri2Display = dri2CreateDisplay(dpy);
853 dpyPriv->driDisplay = driCreateDisplay(dpy);
856 dpyPriv->driswDisplay = driswCreateDisplay(dpy);
859 #ifdef GLX_USE_APPLEGL
860 if (!applegl_create_display(dpyPriv)) {
865 if (!AllocAndFetchScreenConfigs(dpy, dpyPriv)) {
870 if (dpyPriv->majorVersion == 1 && dpyPriv->minorVersion >= 1)
871 __glXClientInfo(dpy, dpyPriv->majorOpcode);
873 dpyPriv->next = glx_displays;
874 glx_displays = dpyPriv;
876 _XUnlockMutex(_Xglobal_lock);
882 ** Setup for sending a GLX command on dpy. Make sure the extension is
883 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
886 __glXSetupForCommand(Display * dpy)
888 struct glx_context *gc;
889 struct glx_display *priv;
891 /* If this thread has a current context, flush its rendering commands */
892 gc = __glXGetCurrentContext();
893 if (gc->currentDpy) {
894 /* Flush rendering buffer of the current context, if any */
895 (void) __glXFlushRenderBuffer(gc, gc->pc);
897 if (gc->currentDpy == dpy) {
898 /* Use opcode from gc because its right */
899 return gc->majorOpcode;
903 ** Have to get info about argument dpy because it might be to
904 ** a different server
909 /* Forced to lookup extension via the slow initialize route */
910 priv = __glXInitialize(dpy);
914 return priv->majorOpcode;
918 * Flush the drawing command transport buffer.
920 * \param ctx Context whose transport buffer is to be flushed.
921 * \param pc Pointer to first unused buffer location.
924 * Modify this function to use \c ctx->pc instead of the explicit
928 __glXFlushRenderBuffer(struct glx_context * ctx, GLubyte * pc)
930 Display *const dpy = ctx->currentDpy;
932 xcb_connection_t *c = XGetXCBConnection(dpy);
936 const GLint size = pc - ctx->buf;
938 if ((dpy != NULL) && (size > 0)) {
940 xcb_glx_render(c, ctx->currentContextTag, size,
941 (const uint8_t *) ctx->buf);
943 /* Send the entire buffer as an X request */
945 GetReq(GLXRender, req);
946 req->reqType = ctx->majorOpcode;
947 req->glxCode = X_GLXRender;
948 req->contextTag = ctx->currentContextTag;
949 req->length += (size + 3) >> 2;
950 _XSend(dpy, (char *) ctx->buf, size);
956 /* Reset pointer and return it */
963 * Send a portion of a GLXRenderLarge command to the server. The advantage of
964 * this function over \c __glXSendLargeCommand is that callers can use the
965 * data buffer in the GLX context and may be able to avoid allocating an
966 * extra buffer. The disadvantage is the clients will have to do more
967 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
969 * \sa __glXSendLargeCommand
971 * \param gc GLX context
972 * \param requestNumber Which part of the whole command is this? The first
974 * \param totalRequests How many requests will there be?
975 * \param data Command data.
976 * \param dataLen Size, in bytes, of the command data.
979 __glXSendLargeChunk(struct glx_context * gc, GLint requestNumber,
980 GLint totalRequests, const GLvoid * data, GLint dataLen)
982 Display *dpy = gc->currentDpy;
984 xcb_connection_t *c = XGetXCBConnection(dpy);
985 xcb_glx_render_large(c, gc->currentContextTag, requestNumber,
986 totalRequests, dataLen, data);
988 xGLXRenderLargeReq *req;
990 if (requestNumber == 1) {
994 GetReq(GLXRenderLarge, req);
995 req->reqType = gc->majorOpcode;
996 req->glxCode = X_GLXRenderLarge;
997 req->contextTag = gc->currentContextTag;
998 req->length += (dataLen + 3) >> 2;
999 req->requestNumber = requestNumber;
1000 req->requestTotal = totalRequests;
1001 req->dataBytes = dataLen;
1002 Data(dpy, data, dataLen);
1004 if (requestNumber == totalRequests) {
1008 #endif /* USE_XCB */
1013 * Send a command that is too large for the GLXRender protocol request.
1015 * Send a large command, one that is too large for some reason to
1016 * send using the GLXRender protocol request. One reason to send
1017 * a large command is to avoid copying the data.
1019 * \param ctx GLX context
1020 * \param header Header data.
1021 * \param headerLen Size, in bytes, of the header data. It is assumed that
1022 * the header data will always be small enough to fit in
1023 * a single X protocol packet.
1024 * \param data Command data.
1025 * \param dataLen Size, in bytes, of the command data.
1028 __glXSendLargeCommand(struct glx_context * ctx,
1029 const GLvoid * header, GLint headerLen,
1030 const GLvoid * data, GLint dataLen)
1033 GLint totalRequests, requestNumber;
1036 ** Calculate the maximum amount of data can be stuffed into a single
1037 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1038 ** packet size minus sz_xGLXRenderReq.
1040 maxSize = (ctx->bufSize + sz_xGLXRenderReq) - sz_xGLXRenderLargeReq;
1041 totalRequests = 1 + (dataLen / maxSize);
1042 if (dataLen % maxSize)
1046 ** Send all of the command, except the large array, as one request.
1048 assert(headerLen <= maxSize);
1049 __glXSendLargeChunk(ctx, 1, totalRequests, header, headerLen);
1052 ** Send enough requests until the whole array is sent.
1054 for (requestNumber = 2; requestNumber <= (totalRequests - 1);
1056 __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, maxSize);
1057 data = (const GLvoid *) (((const GLubyte *) data) + maxSize);
1059 assert(dataLen > 0);
1062 assert(dataLen <= maxSize);
1063 __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, dataLen);
1066 /************************************************************************/
1070 __glXDumpDrawBuffer(struct glx_context * ctx)
1072 GLubyte *p = ctx->buf;
1073 GLubyte *end = ctx->pc;
1074 GLushort opcode, length;
1078 opcode = *((GLushort *) p);
1079 length = *((GLushort *) (p + 2));
1080 printf("%2x: %5d: ", opcode, length);
1083 while (length > 0) {
1084 printf("%08x ", *((unsigned *) p));