src/glx/glxext.c


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/*
 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice including the dates of first publication and
 * either this permission notice or a reference to
 * http://oss.sgi.com/projects/FreeB/
 * shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Except as contained in this notice, the name of Silicon Graphics, Inc.
 * shall not be used in advertising or otherwise to promote the sale, use or
 * other dealings in this Software without prior written authorization from
 * Silicon Graphics, Inc.
 */

/**
 * \file glxext.c
 * GLX protocol interface boot-strap code.
 *
 * Direct rendering support added by Precision Insight, Inc.
 *
 * \author Kevin E. Martin <kevin@precisioninsight.com>
 */

#include <assert.h>
#include "glxclient.h"
#include <X11/extensions/Xext.h>
#include <X11/extensions/extutil.h>
#ifdef GLX_USE_APPLEGL
#include "apple_glx.h"
#include "apple_visual.h"
#endif
#include "glxextensions.h"

#include <X11/Xlib-xcb.h>
#include <xcb/xcb.h>
#include <xcb/glx.h>


#ifdef DEBUG
void __glXDumpDrawBuffer(struct glx_context * ctx);
#endif

/*
** You can set this cell to 1 to force the gl drawing stuff to be
** one command per packet
*/
_X_HIDDEN int __glXDebug = 0;

/* Extension required boiler plate */

static const char __glXExtensionName[] = GLX_EXTENSION_NAME;
  static struct glx_display *glx_displays;

static /* const */ char *error_list[] = {
   "GLXBadContext",
   "GLXBadContextState",
   "GLXBadDrawable",
   "GLXBadPixmap",
   "GLXBadContextTag",
   "GLXBadCurrentWindow",
   "GLXBadRenderRequest",
   "GLXBadLargeRequest",
   "GLXUnsupportedPrivateRequest",
   "GLXBadFBConfig",
   "GLXBadPbuffer",
   "GLXBadCurrentDrawable",
   "GLXBadWindow",
   "GLXBadProfileARB",
};

#ifdef GLX_USE_APPLEGL
static char *__glXErrorString(Display *dpy, int code, XExtCodes *codes, 
                              char *buf, int n);
#endif

static
XEXT_GENERATE_ERROR_STRING(__glXErrorString, __glXExtensionName,
                           __GLX_NUMBER_ERRORS, error_list)

/*
 * GLX events are a bit funky.  We don't stuff the X event code into
 * our user exposed (via XNextEvent) structure.  Instead we use the GLX
 * private event code namespace (and hope it doesn't conflict).  Clients
 * have to know that bit 15 in the event type field means they're getting
 * a GLX event, and then handle the various sub-event types there, rather
 * than simply checking the event code and handling it directly.
 */

static Bool
__glXWireToEvent(Display *dpy, XEvent *event, xEvent *wire)
{
     struct glx_display *glx_dpy = __glXInitialize(dpy);

   if (glx_dpy == NULL)
      return False;

   switch ((wire->u.u.type & 0x7f) - glx_dpy->codes->first_event) {
   case GLX_PbufferClobber:
   {