Merge branch 'sunweaver-pr/xserver-drop-outdated-xext-extensions' into arctica-3.6.x

Attributes GH PR #106: https://github.com/ArcticaProject/nx-libs/pull/106

1 files changed, 0 insertions, 1787 deletions

diff --git a/nx-X11/programs/Xserver/Xext/mbuf.c b/nx-X11/programs/Xserver/Xext/mbuf.c
deleted file mode 100644
index 5379f2656..000000000
--- a/nx-X11/programs/Xserver/Xext/mbuf.c
+++ /dev/null
@@ -1,1787 +0,0 @@
-/* $XFree86: xc/programs/Xserver/Xext/mbuf.c,v 3.15 2003/10/28 23:08:43 tsi Exp $ */
-/************************************************************
-
-Copyright 1989, 1998  The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice 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 THE
-OPEN GROUP 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 The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-********************************************************/
-
-/* $Xorg: mbuf.c,v 1.4 2001/02/09 02:04:32 xorgcvs Exp $ */
-#define NEED_REPLIES
-#define NEED_EVENTS
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <nx-X11/X.h>
-#include <nx-X11/Xproto.h>
-#include "window.h"
-#include "os.h"
-#include "windowstr.h"
-#include "scrnintstr.h"
-#include "pixmapstr.h"
-#include "gcstruct.h"
-#include "extnsionst.h"
-#include "dixstruct.h"
-#include "resource.h"
-#include "opaque.h"
-#include "sleepuntil.h"
-#define _MULTIBUF_SERVER_	/* don't want Xlib structures */
-#include <nx-X11/extensions/multibufst.h>
-
-#ifdef EXTMODULE
-#include "xf86_ansic.h"
-#else
-#include <stdio.h>
-#if !defined(WIN32) && !defined(Lynx)
-#include <sys/time.h>
-#endif
-#endif
-
-/* given an OtherClientPtr obj, get the ClientPtr */
-#define rClient(obj) (clients[CLIENT_ID((obj)->resource)])
-
-/* given a MultibufferPtr b, get the ClientPtr */
-#define bClient(b)   (clients[CLIENT_ID(b->pPixmap->drawable.id)])
-
-#define ValidEventMasks (ExposureMask|MultibufferClobberNotifyMask|MultibufferUpdateNotifyMask)
-
-#if 0
-static unsigned char	MultibufferReqCode;
-#endif
-static int		MultibufferEventBase;
-static int		MultibufferErrorBase;
-int			MultibufferScreenIndex = -1;
-int			MultibufferWindowIndex = -1;
-
-static void		PerformDisplayRequest (
-				MultibuffersPtr * /* ppMultibuffers */,
-				MultibufferPtr * /* pMultibuffer */,
-				int /* nbuf */
-				);
-static Bool		QueueDisplayRequest (
-				ClientPtr /* client */,
-				TimeStamp /* activateTime */
-				);
-
-static void		BumpTimeStamp (
-				TimeStamp * /* ts */,
-				CARD32 /* inc */
-				);
-
-static void		AliasMultibuffer (
-				MultibuffersPtr /* pMultibuffers */,
-				int /* i */
-				);
-static void		RecalculateMultibufferOtherEvents (
-				MultibufferPtr /* pMultibuffer */
-				);
-static int		EventSelectForMultibuffer(
-				MultibufferPtr /* pMultibuffer */,
-				ClientPtr /* client */,
-				Mask /* mask */
-				);
-
-/*
- * The Pixmap associated with a buffer can be found as a resource
- * with this type
- */
-RESTYPE			MultibufferDrawableResType;
-static int		MultibufferDrawableDelete (
-				void * /* value */,
-				XID /* id */
-				);
-/*
- * The per-buffer data can be found as a resource with this type.
- * the resource id of the per-buffer data is the same as the resource
- * id of the pixmap
- */
-static RESTYPE		MultibufferResType;
-static int		MultibufferDelete (
-				void * /* value */,
-				XID /* id */
-				);
-
-/*
- * The per-window data can be found as a resource with this type,
- * using the window resource id
- */
-static RESTYPE		MultibuffersResType;
-static int		MultibuffersDelete (
-				void * /* value */,
-				XID /* id */
-				);
-
-/*
- * Clients other than the buffer creator attach event masks in
- * OtherClient structures; each has a resource of this type.
- */
-static RESTYPE		OtherClientResType;
-static int		OtherClientDelete (
-				void * /* value */,
-				XID /* id */
-				);
-
-/****************
- * MultibufferExtensionInit
- *
- * Called from InitExtensions in main()
- *
- ****************/
-
-extern DISPATCH_PROC(ProcGetBufferAttributes);
-
-static DISPATCH_PROC(ProcClearImageBufferArea);
-static DISPATCH_PROC(ProcCreateImageBuffers);
-static DISPATCH_PROC(ProcDestroyImageBuffers);
-static DISPATCH_PROC(ProcDisplayImageBuffers);
-static DISPATCH_PROC(ProcGetBufferInfo);
-static DISPATCH_PROC(ProcGetBufferVersion);
-static DISPATCH_PROC(ProcGetMBufferAttributes);
-static DISPATCH_PROC(ProcMultibufferDispatch);
-static DISPATCH_PROC(ProcSetBufferAttributes);
-static DISPATCH_PROC(ProcSetMBufferAttributes);
-static DISPATCH_PROC(SProcClearImageBufferArea);
-static DISPATCH_PROC(SProcCreateImageBuffers);
-static DISPATCH_PROC(SProcDestroyImageBuffers);
-static DISPATCH_PROC(SProcDisplayImageBuffers);
-static DISPATCH_PROC(SProcGetBufferAttributes);
-static DISPATCH_PROC(SProcGetBufferInfo);
-static DISPATCH_PROC(SProcGetBufferVersion);
-static DISPATCH_PROC(SProcGetMBufferAttributes);
-static DISPATCH_PROC(SProcMultibufferDispatch);
-static DISPATCH_PROC(SProcSetBufferAttributes);
-static DISPATCH_PROC(SProcSetMBufferAttributes);
-
-static void		MultibufferResetProc(
-				ExtensionEntry * /* extEntry */
-				);
-static void		SClobberNotifyEvent(
-				xMbufClobberNotifyEvent * /* from */,
-				xMbufClobberNotifyEvent	* /* to */
-				);
-static void		SUpdateNotifyEvent(
-				xMbufUpdateNotifyEvent * /* from */,
-				xMbufUpdateNotifyEvent * /* to */
-				);
-static Bool		MultibufferPositionWindow(
-				WindowPtr /* pWin */,
-				int /* x */,
-				int /* y */
-				);
-
-static void		SetupBackgroundPainter (
-				WindowPtr /* pWin */,
-				GCPtr /* pGC */
-				);
-
-static int		DeliverEventsToMultibuffer (
-				MultibufferPtr /* pMultibuffer */,
-				xEvent * /* pEvents */,
-				int /* count */,
-				Mask /* filter */
-				);
-
-void
-MultibufferExtensionInit()
-{
-    ExtensionEntry	    *extEntry;
-    int			    i, j;
-    ScreenPtr		    pScreen;
-    MultibufferScreenPtr    pMultibufferScreen;
-
-    /*
-     * allocate private pointers in windows and screens.  Allocating
-     * window privates may seem like an unnecessary expense, but every
-     * PositionWindow call must check to see if the window is
-     * multi-buffered; a resource lookup is too expensive.
-     */
-    MultibufferScreenIndex = AllocateScreenPrivateIndex ();
-    if (MultibufferScreenIndex < 0)
-	return;
-    MultibufferWindowIndex = AllocateWindowPrivateIndex ();
-    for (i = 0; i < screenInfo.numScreens; i++)
-    {
-	pScreen = screenInfo.screens[i];
-	if (!AllocateWindowPrivate (pScreen, MultibufferWindowIndex, 0) ||
-	    !(pMultibufferScreen = (MultibufferScreenPtr) xalloc (sizeof (MultibufferScreenRec))))
-	{
-	    for (j = 0; j < i; j++)
-		xfree (screenInfo.screens[j]->devPrivates[MultibufferScreenIndex].ptr);
-	    return;
-	}
-	pScreen->devPrivates[MultibufferScreenIndex].ptr = (void *) pMultibufferScreen;
-	/*
- 	 * wrap PositionWindow to resize the pixmap when the window
-	 * changes size
- 	 */
-	pMultibufferScreen->PositionWindow = pScreen->PositionWindow;
-	pScreen->PositionWindow = MultibufferPositionWindow;
-    }
-    /*
-     * create the resource types
-     */
-    MultibufferDrawableResType =
-	CreateNewResourceType(MultibufferDrawableDelete)|RC_CACHED|RC_DRAWABLE;
-    MultibufferResType = CreateNewResourceType(MultibufferDelete);
-    MultibuffersResType = CreateNewResourceType(MultibuffersDelete);
-    OtherClientResType = CreateNewResourceType(OtherClientDelete);
-    if (MultibufferDrawableResType && MultibufferResType &&
-	MultibuffersResType && 	OtherClientResType &&
-	(extEntry = AddExtension(MULTIBUFFER_PROTOCOL_NAME,
-				 MultibufferNumberEvents, 
-				 MultibufferNumberErrors,
-				 ProcMultibufferDispatch, SProcMultibufferDispatch,
-				 MultibufferResetProc, StandardMinorOpcode)))
-    {
-#if 0
-	MultibufferReqCode = (unsigned char)extEntry->base;
-#endif
-	MultibufferEventBase = extEntry->eventBase;
-	MultibufferErrorBase = extEntry->errorBase;
-	EventSwapVector[MultibufferEventBase + MultibufferClobberNotify] = (EventSwapPtr) SClobberNotifyEvent;
-	EventSwapVector[MultibufferEventBase + MultibufferUpdateNotify] = (EventSwapPtr) SUpdateNotifyEvent;
-    }
-}
-
-/*ARGSUSED*/
-static void
-MultibufferResetProc (extEntry)
-ExtensionEntry	*extEntry;
-{
-    int			    i;
-    ScreenPtr		    pScreen;
-    MultibufferScreenPtr    pMultibufferScreen;
-    
-    if (MultibufferScreenIndex < 0)
-	return;
-    for (i = 0; i < screenInfo.numScreens; i++)
-    {
-	pScreen = screenInfo.screens[i];
-	if (pScreen->devPrivates[MultibufferScreenIndex].ptr)
-	{
-	    pMultibufferScreen = (MultibufferScreenPtr) pScreen->devPrivates[MultibufferScreenIndex].ptr;
-	    pScreen->PositionWindow = pMultibufferScreen->PositionWindow;
-	    xfree (pMultibufferScreen);
-	}
-    }
-}
-
-static int
-ProcGetBufferVersion (client)
-    register ClientPtr	client;
-{
-    xMbufGetBufferVersionReply	rep;
-    register int		n;
-
-    REQUEST_SIZE_MATCH (xMbufGetBufferVersionReq);
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-    rep.majorVersion = MULTIBUFFER_MAJOR_VERSION;
-    rep.minorVersion = MULTIBUFFER_MINOR_VERSION;
-    if (client->swapped) {
-    	swaps(&rep.sequenceNumber, n);
-    	swapl(&rep.length, n);
-    }
-    WriteToClient(client, sizeof (xMbufGetBufferVersionReply), (char *)&rep);
-    return (client->noClientException);
-}
-
-static void
-SetupBackgroundPainter (pWin, pGC)
-    WindowPtr	pWin;
-    GCPtr	pGC;
-{
-    void	    *gcvalues[4];
-    int		    ts_x_origin, ts_y_origin;
-    PixUnion	    background;
-    int		    backgroundState;
-    Mask	    gcmask;
-
-    /*
-     * First take care of any ParentRelative stuff by altering the
-     * tile/stipple origin to match the coordinates of the upper-left
-     * corner of the first ancestor without a ParentRelative background.
-     * This coordinate is, of course, negative.
-     */
-
-    ts_x_origin = ts_y_origin = 0;
-    while (pWin->backgroundState == ParentRelative) {
-	ts_x_origin -= pWin->origin.x;
-	ts_y_origin -= pWin->origin.y;
-	pWin = pWin->parent;
-    }
-    backgroundState = pWin->backgroundState;
-    background = pWin->background;
-
-    switch (backgroundState)
-    {
-    case BackgroundPixel:
-	gcvalues[0] = (void *) background.pixel;
-	gcvalues[1] = (void *) FillSolid;
-	gcmask = GCForeground|GCFillStyle;
-	break;
-
-    case BackgroundPixmap:
-	gcvalues[0] = (void *) FillTiled;
-	gcvalues[1] = (void *) background.pixmap;
-	gcvalues[2] = (void *)(long) ts_x_origin;
-	gcvalues[3] = (void *)(long) ts_y_origin;
-	gcmask = GCFillStyle|GCTile|GCTileStipXOrigin|GCTileStipYOrigin;
-	break;
-
-    default:
-	gcvalues[0] = (void *) GXnoop;
-	gcmask = GCFunction;
-    }
-    DoChangeGC(pGC, gcmask, (XID *)gcvalues, TRUE);
-}
-
-int
-CreateImageBuffers (pWin, nbuf, ids, action, hint)
-    WindowPtr	pWin;
-    int		nbuf;
-    XID		*ids;
-    int		action;
-    int		hint;
-{
-    MultibuffersPtr	pMultibuffers;
-    MultibufferPtr	pMultibuffer;
-    ScreenPtr		pScreen;
-    int			width, height, depth;
-    int			i;
-    GCPtr		pClearGC = NULL;
-    xRectangle		clearRect;
-
-    DestroyImageBuffers(pWin);
-    pMultibuffers = (MultibuffersPtr) xalloc (sizeof (MultibuffersRec) +
-					      nbuf * sizeof (MultibufferRec));
-    if (!pMultibuffers)
-	return BadAlloc;
-    pMultibuffers->pWindow = pWin;
-    pMultibuffers->buffers = (MultibufferPtr) (pMultibuffers + 1);
-    pMultibuffers->refcnt = pMultibuffers->numMultibuffer = 0;
-    if (!AddResource (pWin->drawable.id, MultibuffersResType, (void *) pMultibuffers))
-	return BadAlloc;
-    width = pWin->drawable.width;
-    height = pWin->drawable.height;
-    depth = pWin->drawable.depth;
-    pScreen = pWin->drawable.pScreen;
-
-    if (pWin->backgroundState != None)
-    {
-	pClearGC = GetScratchGC (pWin->drawable.depth, pScreen);
-	SetupBackgroundPainter (pWin, pClearGC);
-	clearRect.x = clearRect.y = 0;
-	clearRect.width = width;
-	clearRect.height = height;
-    }
-
-    for (i = 0; i < nbuf; i++)
-    {
-	pMultibuffer = &pMultibuffers->buffers[i];
-	pMultibuffer->eventMask = 0L;
-	pMultibuffer->otherEventMask = 0L;
-	pMultibuffer->otherClients = (OtherClientsPtr) NULL;
-	pMultibuffer->number = i;
-	pMultibuffer->side = MultibufferSideMono;
-	pMultibuffer->clobber = MultibufferUnclobbered;
-	pMultibuffer->pMultibuffers = pMultibuffers;
-	if (!AddResource (ids[i], MultibufferResType, (void *) pMultibuffer))
-	    break;
-	pMultibuffer->pPixmap = (*pScreen->CreatePixmap) (pScreen, width, height, depth);
-	if (!pMultibuffer->pPixmap)
-	    break;
-	if (!AddResource (ids[i], MultibufferDrawableResType, (void *) pMultibuffer->pPixmap))
-	{
-	    FreeResource (ids[i], MultibufferResType);
-	    (*pScreen->DestroyPixmap) (pMultibuffer->pPixmap);
-	    break;
-	}
-	pMultibuffer->pPixmap->drawable.id = ids[i];
-
-	if (i > 0 && pClearGC)
-	{
-	    ValidateGC((DrawablePtr)pMultibuffer->pPixmap, pClearGC);
-	    (*pClearGC->ops->PolyFillRect)((DrawablePtr)pMultibuffer->pPixmap,
-					   pClearGC, 1, &clearRect);
-	}
-    }
-    pMultibuffers->numMultibuffer = i;
-    pMultibuffers->refcnt = i;
-    pMultibuffers->displayedMultibuffer = -1;
-    if (i > 0)
-	AliasMultibuffer (pMultibuffers, 0);
-    pMultibuffers->updateAction = action;
-    pMultibuffers->updateHint = hint;
-    pMultibuffers->windowMode = MultibufferModeMono;
-    pMultibuffers->lastUpdate.months = 0;
-    pMultibuffers->lastUpdate.milliseconds = 0;
-    pMultibuffers->width = width;
-    pMultibuffers->height = height;
-    pWin->devPrivates[MultibufferWindowIndex].ptr = (void *) pMultibuffers;
-    if (pClearGC) FreeScratchGC(pClearGC);
-    return Success;
-}
-
-
-static int
-ProcCreateImageBuffers (client)
-    register ClientPtr	client;
-{
-    REQUEST(xMbufCreateImageBuffersReq);
-    xMbufCreateImageBuffersReply	rep;
-    register int		n;
-    WindowPtr			pWin;
-    XID				*ids;
-    int				len, nbuf;
-    int				i;
-    int				err;
-
-    REQUEST_AT_LEAST_SIZE (xMbufCreateImageBuffersReq);
-    len = stuff->length - (sizeof(xMbufCreateImageBuffersReq) >> 2);
-    if (len == 0)
-	return BadLength;
-    if (!(pWin = LookupWindow (stuff->window, client)))
-	return BadWindow;
-    if (pWin->drawable.class == InputOnly)
-	return BadMatch;
-    switch (stuff->updateAction)
-    {
-    case MultibufferUpdateActionUndefined:
-    case MultibufferUpdateActionBackground:
-    case MultibufferUpdateActionUntouched:
-    case MultibufferUpdateActionCopied:
-	break;
-    default:
-	client->errorValue = stuff->updateAction;
-	return BadValue;
-    }
-    switch (stuff->updateHint)
-    {
-    case MultibufferUpdateHintFrequent:
-    case MultibufferUpdateHintIntermittent:
-    case MultibufferUpdateHintStatic:
-	break;
-    default:
-	client->errorValue = stuff->updateHint;
-	return BadValue;
-    }
-    nbuf = len;
-    ids = (XID *) &stuff[1];
-    for (i = 0; i < nbuf; i++)
-    {
-	LEGAL_NEW_RESOURCE(ids[i], client);
-    }
-    err = CreateImageBuffers (pWin, nbuf, ids,
-			      stuff->updateAction, stuff->updateHint);
-    if (err != Success)
-	return err;
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-    rep.numberBuffer = ((MultibuffersPtr) (pWin->devPrivates[MultibufferWindowIndex].ptr))->numMultibuffer;
-    if (client->swapped)
-    {
-    	swaps(&rep.sequenceNumber, n);
-    	swapl(&rep.length, n);
-	swaps(&rep.numberBuffer, n);
-    }
-    WriteToClient(client, sizeof (xMbufCreateImageBuffersReply), (char*)&rep);
-    return (client->noClientException);
-}
-
-static int
-ProcDisplayImageBuffers (client)
-    register ClientPtr	client;
-{
-    REQUEST(xMbufDisplayImageBuffersReq);
-    MultibufferPtr	    *pMultibuffer;
-    MultibuffersPtr	    *ppMultibuffers;
-    int		    nbuf;
-    XID		    *ids;
-    int		    i, j;
-    CARD32	    minDelay;
-    TimeStamp	    activateTime, bufferTime;
-    
-
-    REQUEST_AT_LEAST_SIZE (xMbufDisplayImageBuffersReq);
-    nbuf = stuff->length - (sizeof (xMbufDisplayImageBuffersReq) >> 2);
-    if (!nbuf)
-	return Success;
-    minDelay = stuff->minDelay;
-    ids = (XID *) &stuff[1];
-    ppMultibuffers = (MultibuffersPtr *) ALLOCATE_LOCAL(nbuf * sizeof (MultibuffersPtr));
-    pMultibuffer = (MultibufferPtr *) ALLOCATE_LOCAL(nbuf * sizeof (MultibufferPtr));
-    if (!ppMultibuffers || !pMultibuffer)
-    {
-	if (ppMultibuffers) DEALLOCATE_LOCAL(ppMultibuffers);
-	if (pMultibuffer)   DEALLOCATE_LOCAL(pMultibuffer);
-	client->errorValue = 0;
-	return BadAlloc;
-    }
-    activateTime.months = 0;
-    activateTime.milliseconds = 0;
-    for (i = 0; i < nbuf; i++)
-    {
-	pMultibuffer[i] = (MultibufferPtr) LookupIDByType (ids[i], 
-MultibufferResType);
-	if (!pMultibuffer[i])
-	{
-	    DEALLOCATE_LOCAL(ppMultibuffers);
-	    DEALLOCATE_LOCAL(pMultibuffer);
-	    client->errorValue = ids[i];
-	    return MultibufferErrorBase + MultibufferBadBuffer;
-	}
-	ppMultibuffers[i] = pMultibuffer[i]->pMultibuffers;
-	for (j = 0; j < i; j++)
-	{
-	    if (ppMultibuffers[i] == ppMultibuffers[j])
-	    {
-	    	DEALLOCATE_LOCAL(ppMultibuffers);
-	    	DEALLOCATE_LOCAL(pMultibuffer);
-		client->errorValue = ids[i];
-	    	return BadMatch;
-	    }
-	}
-	bufferTime = ppMultibuffers[i]->lastUpdate;
-	BumpTimeStamp (&bufferTime, minDelay);
-	if (CompareTimeStamps (bufferTime, activateTime) == LATER)
-	    activateTime = bufferTime;
-    }
-    UpdateCurrentTime ();
-    if (CompareTimeStamps (activateTime, currentTime) == LATER &&
-	QueueDisplayRequest (client, activateTime))
-    {
-	;
-    }
-    else
-	PerformDisplayRequest (ppMultibuffers, pMultibuffer, nbuf);
-
-    DEALLOCATE_LOCAL(ppMultibuffers);
-    DEALLOCATE_LOCAL(pMultibuffer);
-    return Success;
-}
-
-
-static int
-ProcDestroyImageBuffers (client)
-    register ClientPtr	client;
-{
-    REQUEST (xMbufDestroyImageBuffersReq);
-    WindowPtr	pWin;
-
-    REQUEST_SIZE_MATCH (xMbufDestroyImageBuffersReq);
-    if (!(pWin = LookupWindow (stuff->window, client)))
-	return BadWindow;
-    DestroyImageBuffers (pWin);
-    return Success;
-}
-
-static int
-ProcSetMBufferAttributes (client)
-    register ClientPtr	client;
-{
-    REQUEST (xMbufSetMBufferAttributesReq);
-    WindowPtr	pWin;
-    MultibuffersPtr	pMultibuffers;
-    int		len;
-    Mask	vmask;
-    Mask	index2;
-    CARD32	updateHint;
-    XID		*vlist;
-
-    REQUEST_AT_LEAST_SIZE (xMbufSetMBufferAttributesReq);
-    pWin = LookupWindow (stuff->window, client);
-    if (!pWin)
-	return BadWindow;
-    pMultibuffers = (MultibuffersPtr)LookupIDByType (pWin->drawable.id, MultibuffersResType);
-    if (!pMultibuffers)
-	return BadMatch;
-    len = stuff->length - (sizeof (xMbufSetMBufferAttributesReq) >> 2);
-    vmask = stuff->valueMask;
-    if (len != Ones (vmask))
-	return BadLength;
-    vlist = (XID *) &stuff[1];
-    while (vmask)
-    {
-	index2 = (Mask) lowbit (vmask);
-	vmask &= ~index2;
-	switch (index2)
-	{
-	case MultibufferWindowUpdateHint:
-	    updateHint = (CARD32) *vlist;
-	    switch (updateHint)
-	    {
-	    case MultibufferUpdateHintFrequent:
-	    case MultibufferUpdateHintIntermittent:
-	    case MultibufferUpdateHintStatic:
-		pMultibuffers->updateHint = updateHint;
-		break;
-	    default:
-		client->errorValue = updateHint;
-		return BadValue;
-	    }
-	    vlist++;
-	    break;
-	default:
-	    client->errorValue = stuff->valueMask;
-	    return BadValue;
-	}
-    }
-    return Success;
-}
-
-static int
-ProcGetMBufferAttributes (client)
-    ClientPtr	client;
-{
-    REQUEST (xMbufGetMBufferAttributesReq);
-    WindowPtr	pWin;
-    MultibuffersPtr	pMultibuffers;
-    XID		*ids;
-    xMbufGetMBufferAttributesReply  rep;
-    int		i, n;
-
-    REQUEST_SIZE_MATCH (xMbufGetMBufferAttributesReq);
-    pWin = LookupWindow (stuff->window, client);
-    if (!pWin)
-	return BadWindow;
-    pMultibuffers = (MultibuffersPtr)LookupIDByType (pWin->drawable.id, MultibuffersResType);
-    if (!pMultibuffers)
-	return BadAccess;
-    ids = (XID *) ALLOCATE_LOCAL (pMultibuffers->numMultibuffer * sizeof (XID));
-    if (!ids)
-	return BadAlloc;
-    for (i = 0; i < pMultibuffers->numMultibuffer; i++)
-	ids[i] = pMultibuffers->buffers[i].pPixmap->drawable.id;
-    rep.type = X_Reply;
-    rep.sequenceNumber = client->sequence;
-    rep.length = pMultibuffers->numMultibuffer;
-    rep.displayedBuffer = pMultibuffers->displayedMultibuffer;
-    rep.updateAction = pMultibuffers->updateAction;
-    rep.updateHint = pMultibuffers->updateHint;
-    rep.windowMode = pMultibuffers->windowMode;
-    if (client->swapped)
-    {
-    	swaps(&rep.sequenceNumber, n);
-    	swapl(&rep.length, n);
-	swaps(&rep.displayedBuffer, n);
-	SwapLongs (ids, pMultibuffers->numMultibuffer);
-    }
-    WriteToClient (client, sizeof(xMbufGetMBufferAttributesReply),
-		   (char *)&rep);
-    WriteToClient (client, (int)(pMultibuffers->numMultibuffer * sizeof (XID)),
-		   (char *)ids);
-    DEALLOCATE_LOCAL((void *) ids);
-    return client->noClientException;
-}
-
-static int
-ProcSetBufferAttributes (client)
-    register ClientPtr	client;
-{
-    REQUEST(xMbufSetBufferAttributesReq);
-    MultibufferPtr	pMultibuffer;
-    int		len;
-    Mask	vmask, index2;
-    XID		*vlist;
-    Mask	eventMask;
-    int		result;
-
-    REQUEST_AT_LEAST_SIZE (xMbufSetBufferAttributesReq);
-    pMultibuffer = (MultibufferPtr) LookupIDByType (stuff->buffer, MultibufferResType);
-    if (!pMultibuffer)
-	return MultibufferErrorBase + MultibufferBadBuffer;
-    len = stuff->length - (sizeof (xMbufSetBufferAttributesReq) >> 2);
-    vmask = stuff->valueMask;
-    if (len != Ones (vmask))
-	return BadLength;
-    vlist = (XID *) &stuff[1];
-    while (vmask)
-    {
-	index2 = (Mask) lowbit (vmask);
-	vmask &= ~index2;
-	switch (index2)
-	{
-	case MultibufferBufferEventMask:
-	    eventMask = (Mask) *vlist;
-	    vlist++;
-	    result = EventSelectForMultibuffer (pMultibuffer, client, eventMask);
-	    if (result != Success)
-		return result;
-	    break;
-	default:
-	    client->errorValue = stuff->valueMask;
-	    return BadValue;
-	}
-    }
-    return Success;
-}
-
-int
-ProcGetBufferAttributes (client)
-    register ClientPtr	client;
-{
-    REQUEST(xMbufGetBufferAttributesReq);
-    MultibufferPtr	pMultibuffer;
-    xMbufGetBufferAttributesReply	rep;
-    OtherClientsPtr		other;
-    int				n;
-
-    REQUEST_SIZE_MATCH (xMbufGetBufferAttributesReq);
-    pMultibuffer = (MultibufferPtr) LookupIDByType (stuff->buffer, MultibufferResType);
-    if (!pMultibuffer)
-	return MultibufferErrorBase + MultibufferBadBuffer;
-    rep.type = X_Reply;
-    rep.sequenceNumber = client->sequence;
-    rep.length = 0;
-    rep.window = pMultibuffer->pMultibuffers->pWindow->drawable.id;
-    if (bClient (pMultibuffer) == client)
-	rep.eventMask = pMultibuffer->eventMask;
-    else
-    {
-	rep.eventMask = (Mask) 0L;
-	for (other = pMultibuffer->otherClients; other; other = other->next)
-	    if (SameClient (other, client))
-	    {
-		rep.eventMask = other->mask;
-		break;
-	    }
-    }
-    rep.bufferIndex = pMultibuffer->number;
-    rep.side = pMultibuffer->side;
-    if (client->swapped)
-    {
-    	swaps(&rep.sequenceNumber, n);
-    	swapl(&rep.length, n);
-	swapl(&rep.window, n);
-	swapl(&rep.eventMask, n);
-	swaps(&rep.bufferIndex, n);
-    }
-    WriteToClient(client, sizeof (xMbufGetBufferAttributesReply), (char *)&rep);
-    return (client->noClientException);
-}
-
-static int
-ProcGetBufferInfo (client)
-    register ClientPtr	client;
-{
-    REQUEST (xMbufGetBufferInfoReq);
-    DrawablePtr		    pDrawable;
-    xMbufGetBufferInfoReply rep;
-    ScreenPtr		    pScreen;
-    int			    i, j, k;
-    int			    n;
-    xMbufBufferInfo	    *pInfo;
-    int			    nInfo;
-    DepthPtr		    pDepth;
-
-    pDrawable = (DrawablePtr) LookupDrawable (stuff->drawable, client);
-    if (!pDrawable)
-	return BadDrawable;
-    pScreen = pDrawable->pScreen;
-    nInfo = 0;
-    for (i = 0; i < pScreen->numDepths; i++)
-    {
-	pDepth = &pScreen->allowedDepths[i];
-	nInfo += pDepth->numVids;
-    }
-    pInfo = (xMbufBufferInfo *)
-		ALLOCATE_LOCAL (nInfo * sizeof (xMbufBufferInfo));
-    if (!pInfo)
-	return BadAlloc;
-
-    rep.type = X_Reply;
-    rep.sequenceNumber = client->sequence;
-    rep.length = nInfo * (sizeof (xMbufBufferInfo) >> 2);
-    rep.normalInfo = nInfo;
-    rep.stereoInfo = 0;
-    if (client->swapped)
-    {
-	swaps(&rep.sequenceNumber, n);
-	swapl(&rep.length, n);
-	swaps(&rep.normalInfo, n);
-	swaps(&rep.stereoInfo, n);
-    }
-
-    k = 0;
-    for (i = 0; i < pScreen->numDepths; i++)
-    {
-	pDepth = &pScreen->allowedDepths[i];
-	for (j = 0; j < pDepth->numVids; j++)
-	{
-	    pInfo[k].visualID = pDepth->vids[j];
-	    pInfo[k].maxBuffers = 0;
-	    pInfo[k].depth = pDepth->depth;
-	    if (client->swapped)
-	    {
-		swapl (&pInfo[k].visualID, n);
-		swaps (&pInfo[k].maxBuffers, n);
-	    }
-	    k++;
-	}
-    }
-    WriteToClient (client, sizeof (xMbufGetBufferInfoReply), (void *) &rep);
-    WriteToClient (client, (int) nInfo * sizeof (xMbufBufferInfo), (void *) pInfo);
-    DEALLOCATE_LOCAL ((void *) pInfo);
-    return client->noClientException;
-}
-
-static int
-ProcClearImageBufferArea (client)
-    register ClientPtr	client;
-{
-    REQUEST (xMbufClearImageBufferAreaReq);
-    MultibufferPtr	pMultibuffer;
-    WindowPtr pWin;
-    xRectangle clearRect;
-    int width, height;
-    DrawablePtr pDrawable;
-    ScreenPtr pScreen;
-
-    REQUEST_SIZE_MATCH (xMbufClearImageBufferAreaReq);
-    pMultibuffer = (MultibufferPtr) LookupIDByType (stuff->buffer, MultibufferResType);
-    if (!pMultibuffer)
-	return MultibufferErrorBase + MultibufferBadBuffer;
-    if ((stuff->exposures != xTrue) && (stuff->exposures != xFalse))
-    {
-	client->errorValue = stuff->exposures;
-        return(BadValue);
-    }
-    pWin = pMultibuffer->pMultibuffers->pWindow;
-    width  = pWin->drawable.width;
-    height = pWin->drawable.height;
-    pScreen = pWin->drawable.pScreen;
-
-    clearRect.x = stuff->x;
-    clearRect.y = stuff->y;
-    clearRect.width  = stuff->width  ? stuff->width  : width;
-    clearRect.height = stuff->height ? stuff->height : height;
-
-    if (pWin->backgroundState != None)
-    {
-	GCPtr pClearGC;
-	pClearGC = GetScratchGC (pWin->drawable.depth, pScreen);
-	SetupBackgroundPainter (pWin, pClearGC);
-
-	if (pMultibuffer->number == pMultibuffer->pMultibuffers->displayedMultibuffer)
-	    pDrawable = (DrawablePtr)pWin;
-	else
-	    pDrawable = (DrawablePtr)pMultibuffer->pPixmap;
-
-	ValidateGC(pDrawable, pClearGC);
-	(*pClearGC->ops->PolyFillRect) (pDrawable, pClearGC, 1, &clearRect);
-	FreeScratchGC(pClearGC);
-    }
-
-    if (stuff->exposures)
-    {
-	RegionRec region;
-	BoxRec box;
-	box.x1 = clearRect.x;
-	box.y1 = clearRect.y;
-	box.x2 = clearRect.x + clearRect.width;
-	box.y2 = clearRect.y + clearRect.height;
-	RegionInit(&region, &box, 1);
-	MultibufferExpose(pMultibuffer, &region);
-	RegionUninit(&region);
-    }
-    return Success;
-}
-
-static int
-ProcMultibufferDispatch (client)
-    register ClientPtr	client;
-{
-    REQUEST(xReq);
-    switch (stuff->data) {
-    case X_MbufGetBufferVersion:
-	return ProcGetBufferVersion (client);
-    case X_MbufCreateImageBuffers:
-	return ProcCreateImageBuffers (client);
-    case X_MbufDisplayImageBuffers:
-	return ProcDisplayImageBuffers (client);
-    case X_MbufDestroyImageBuffers:
-	return ProcDestroyImageBuffers (client);
-    case X_MbufSetMBufferAttributes:
-	return ProcSetMBufferAttributes (client);
-    case X_MbufGetMBufferAttributes:
-	return ProcGetMBufferAttributes (client);
-    case X_MbufSetBufferAttributes:
-	return ProcSetBufferAttributes (client);
-    case X_MbufGetBufferAttributes:
-	return ProcGetBufferAttributes (client);
-    case X_MbufGetBufferInfo:
-	return ProcGetBufferInfo (client);
-    case X_MbufClearImageBufferArea:
-	return ProcClearImageBufferArea (client);
-    default:
-	return BadRequest;
-    }
-}
-
-static int
-SProcGetBufferVersion (client)
-    register ClientPtr	client;
-{
-    register int    n;
-    REQUEST (xMbufGetBufferVersionReq);
-
-    swaps (&stuff->length, n);
-    return ProcGetBufferVersion (client);
-}
-
-static int
-SProcCreateImageBuffers (client)
-    register ClientPtr	client;
-{
-    register int    n;
-    REQUEST (xMbufCreateImageBuffersReq);
-
-    swaps (&stuff->length, n);
-    REQUEST_AT_LEAST_SIZE (xMbufCreateImageBuffersReq);
-    swapl (&stuff->window, n);
-    SwapRestL(stuff);
-    return ProcCreateImageBuffers (client);
-}
-
-static int
-SProcDisplayImageBuffers (client)
-    register ClientPtr	client;
-{
-    register int    n;
-    REQUEST (xMbufDisplayImageBuffersReq);
-    
-    swaps (&stuff->length, n);
-    REQUEST_AT_LEAST_SIZE (xMbufDisplayImageBuffersReq);
-    swaps (&stuff->minDelay, n);
-    swaps (&stuff->maxDelay, n);
-    SwapRestL(stuff);
-    return ProcDisplayImageBuffers (client);
-}
-
-static int
-SProcDestroyImageBuffers (client)
-    register ClientPtr	client;
-{
-    register int    n;
-    REQUEST (xMbufDestroyImageBuffersReq);
-    
-    swaps (&stuff->length, n);
-    REQUEST_SIZE_MATCH (xMbufDestroyImageBuffersReq);
-    swapl (&stuff->window, n);
-    return ProcDestroyImageBuffers (client);
-}
-
-static int
-SProcSetMBufferAttributes (client)
-    register ClientPtr	client;
-{
-    register int    n;
-    REQUEST (xMbufSetMBufferAttributesReq);
-
-    swaps (&stuff->length, n);
-    REQUEST_AT_LEAST_SIZE(xMbufSetMBufferAttributesReq);
-    swapl (&stuff->window, n);
-    swapl (&stuff->valueMask, n);
-    SwapRestL(stuff);
-    return ProcSetMBufferAttributes (client);
-}
-
-static int
-SProcGetMBufferAttributes (client)
-    register ClientPtr	client;
-{
-    register int    n;
-    REQUEST (xMbufGetMBufferAttributesReq);
-
-    swaps (&stuff->length, n);
-    REQUEST_AT_LEAST_SIZE(xMbufGetMBufferAttributesReq);
-    swapl (&stuff->window, n);
-    return ProcGetMBufferAttributes (client);
-}
-
-static int
-SProcSetBufferAttributes (client)
-    register ClientPtr	client;
-{
-    register int    n;
-    REQUEST (xMbufSetBufferAttributesReq);
-
-    swaps (&stuff->length, n);
-    REQUEST_AT_LEAST_SIZE(xMbufSetBufferAttributesReq);
-    swapl (&stuff->buffer, n);
-    swapl (&stuff->valueMask, n);
-    SwapRestL(stuff);
-    return ProcSetBufferAttributes (client);
-}
-
-static int
-SProcGetBufferAttributes (client)
-    register ClientPtr	client;
-{
-    register int    n;
-    REQUEST (xMbufGetBufferAttributesReq);
-
-    swaps (&stuff->length, n);
-    REQUEST_AT_LEAST_SIZE(xMbufGetBufferAttributesReq);
-    swapl (&stuff->buffer, n);
-    return ProcGetBufferAttributes (client);
-}
-
-static int
-SProcGetBufferInfo (client)
-    register ClientPtr	client;
-{
-    register int    n;
-    REQUEST (xMbufGetBufferInfoReq);
-
-    swaps (&stuff->length, n);
-    REQUEST_SIZE_MATCH (xMbufGetBufferInfoReq);
-    swapl (&stuff->drawable, n);
-    return ProcGetBufferInfo (client);
-}
-
-static int
-SProcClearImageBufferArea(client)
-    register ClientPtr client;
-{
-    register char n;
-    REQUEST(xMbufClearImageBufferAreaReq);
-
-    swaps(&stuff->length, n);
-    REQUEST_SIZE_MATCH (xMbufClearImageBufferAreaReq);
-    swapl(&stuff->buffer, n);
-    swaps(&stuff->x, n);
-    swaps(&stuff->y, n);
-    swaps(&stuff->width, n);
-    swaps(&stuff->height, n);
-    return ProcClearImageBufferArea(client);
-}
-
-static int
-SProcMultibufferDispatch (client)
-    register ClientPtr	client;
-{
-    REQUEST(xReq);
-    switch (stuff->data) {
-    case X_MbufGetBufferVersion:
-	return SProcGetBufferVersion (client);
-    case X_MbufCreateImageBuffers:
-	return SProcCreateImageBuffers (client);
-    case X_MbufDisplayImageBuffers:
-	return SProcDisplayImageBuffers (client);
-    case X_MbufDestroyImageBuffers:
-	return SProcDestroyImageBuffers (client);
-    case X_MbufSetMBufferAttributes:
-	return SProcSetMBufferAttributes (client);
-    case X_MbufGetMBufferAttributes:
-	return SProcGetMBufferAttributes (client);
-    case X_MbufSetBufferAttributes:
-	return SProcSetBufferAttributes (client);
-    case X_MbufGetBufferAttributes:
-	return SProcGetBufferAttributes (client);
-    case X_MbufGetBufferInfo:
-	return SProcGetBufferInfo (client);
-    case X_MbufClearImageBufferArea:
-	return SProcClearImageBufferArea (client);
-    default:
-	return BadRequest;
-    }
-}
-
-static void
-SUpdateNotifyEvent (from, to)
-    xMbufUpdateNotifyEvent	*from, *to;
-{
-    to->type = from->type;
-    cpswaps (from->sequenceNumber, to->sequenceNumber);
-    cpswapl (from->buffer, to->buffer);
-    cpswapl (from->timeStamp, to->timeStamp);
-}
-
-static void
-SClobberNotifyEvent (from, to)
-    xMbufClobberNotifyEvent	*from, *to;
-{
-    to->type = from->type;
-    cpswaps (from->sequenceNumber, to->sequenceNumber);
-    cpswapl (from->buffer, to->buffer);
-    to->state = from->state;
-}
-
-static void
-PerformDisplayRequest (ppMultibuffers, pMultibuffer, nbuf)
-    MultibufferPtr	    *pMultibuffer;
-    MultibuffersPtr	    *ppMultibuffers;
-    int		    nbuf;
-{
-    GCPtr	    pGC;
-    PixmapPtr	    pPrevPixmap, pNewPixmap;
-    xRectangle	    clearRect;
-    WindowPtr	    pWin;
-    RegionPtr	    pExposed;
-    int		    i;
-    MultibufferPtr  pPrevMultibuffer;
-    XID		    graphicsExpose;
-
-    UpdateCurrentTime ();
-    for (i = 0; i < nbuf; i++)
-    {
-	pWin = ppMultibuffers[i]->pWindow;
-	pGC = GetScratchGC (pWin->drawable.depth, pWin->drawable.pScreen);
-	pPrevMultibuffer =
-	   &ppMultibuffers[i]->buffers[ppMultibuffers[i]->displayedMultibuffer];
-	pPrevPixmap = pPrevMultibuffer->pPixmap;
-	pNewPixmap = pMultibuffer[i]->pPixmap;
-	switch (ppMultibuffers[i]->updateAction)
-	{
-	case MultibufferUpdateActionUndefined:
-	    break;
-	case MultibufferUpdateActionBackground:
-	    SetupBackgroundPainter (pWin, pGC);
-	    ValidateGC ((DrawablePtr)pPrevPixmap, pGC);
-	    clearRect.x = 0;
-	    clearRect.y = 0;
-	    clearRect.width = pPrevPixmap->drawable.width;
-	    clearRect.height = pPrevPixmap->drawable.height;
-	    (*pGC->ops->PolyFillRect) ((DrawablePtr)pPrevPixmap, pGC,
-				       1, &clearRect);
-	    break;
-	case MultibufferUpdateActionUntouched:
-	    /* copy the window to the pixmap that represents the
-	     * currently displayed buffer
-	     */
-	    if (pPrevMultibuffer->eventMask & ExposureMask)
-	    {
-	    	graphicsExpose = TRUE;
-	    	DoChangeGC (pGC, GCGraphicsExposures, &graphicsExpose, FALSE);
-	    }
-	    ValidateGC ((DrawablePtr)pPrevPixmap, pGC);
-	    pExposed = (*pGC->ops->CopyArea)
-			    ((DrawablePtr) pWin,
-			     (DrawablePtr) pPrevPixmap,
-			     pGC,
-			     0, 0,
-			     pWin->drawable.width, pWin->drawable.height,
-			     0, 0);
-
-	    /* if we couldn't copy the whole window to the buffer,
-	     * send expose events (if any client wants them)
-	     */
-	    if (pPrevMultibuffer->eventMask & ExposureMask)
-	    { /* some client wants expose events */
-	    	if (pExposed)
-	    	{
-		    RegionPtr	pWinSize;
-
-		    pWinSize = CreateUnclippedWinSize (pWin);
-		    /* pExposed is window-relative, but at this point
-		     * pWinSize is screen-relative.  Make pWinSize be
-		     * window-relative so that region ops involving
-		     * pExposed and pWinSize behave sensibly.
-		     */
-		    RegionTranslate(pWinSize,
-				     -pWin->drawable.x, -pWin->drawable.y);
-		    RegionIntersect(pExposed,
-				     pExposed, pWinSize);
-		    RegionDestroy(pWinSize);
-	    	    MultibufferExpose (pPrevMultibuffer, pExposed);
-		    RegionDestroy(pExposed);
-	    	}
-	    	graphicsExpose = FALSE;
-	    	DoChangeGC (pGC, GCGraphicsExposures, &graphicsExpose, FALSE);
-	    }
-	    break; /* end case MultibufferUpdateActionUntouched */
-
-	case MultibufferUpdateActionCopied:
-	    ValidateGC ((DrawablePtr)pPrevPixmap, pGC);
-	    (*pGC->ops->CopyArea) ((DrawablePtr)pNewPixmap,
-				   (DrawablePtr)pPrevPixmap, pGC,
-				   0, 0,
-				   pWin->drawable.width, pWin->drawable.height,
-				   0, 0);
-	    break;
-	} /* end switch on update action */
-
-	/* display the new buffer */
-	ValidateGC ((DrawablePtr)pWin, pGC);
-	(*pGC->ops->CopyArea) ((DrawablePtr)pNewPixmap, (DrawablePtr)pWin, pGC,
-			       0, 0,
-			       pWin->drawable.width, pWin->drawable.height,
-			       0, 0);
-	ppMultibuffers[i]->lastUpdate = currentTime;
-	MultibufferUpdate (pMultibuffer[i],
-			   ppMultibuffers[i]->lastUpdate.milliseconds);
-	AliasMultibuffer (ppMultibuffers[i],
-			  pMultibuffer[i] - ppMultibuffers[i]->buffers);
-	FreeScratchGC (pGC);
-    }
-}
-
-DrawablePtr
-GetBufferPointer (pWin, i)
-    WindowPtr	pWin;
-    int		i;
-{
-    MultibuffersPtr pMultibuffers;
-
-    if (!(pMultibuffers = (MultibuffersPtr) pWin->devPrivates[MultibufferWindowIndex].ptr))
-	return NULL;
-    return (DrawablePtr) pMultibuffers->buffers[i].pPixmap;
-}
-
-int
-DisplayImageBuffers (ids, nbuf)
-    XID	    *ids;
-    int	    nbuf;
-{
-    MultibufferPtr  *pMultibuffer;
-    MultibuffersPtr *pMultibuffers;
-    int		    i, j;
-
-    pMultibuffer = (MultibufferPtr *) ALLOCATE_LOCAL (nbuf * sizeof *pMultibuffer +
-				   nbuf * sizeof *pMultibuffers);
-    if (!pMultibuffer)
-	return BadAlloc;
-    pMultibuffers = (MultibuffersPtr *) (pMultibuffer + nbuf);
-    for (i = 0; i < nbuf; i++)
-    {
-	pMultibuffer[i] = (MultibufferPtr) LookupIDByType (ids[i], MultibufferResType);
-	if (!pMultibuffer[i])
-	{
-	    DEALLOCATE_LOCAL (pMultibuffer);
-	    return MultibufferErrorBase + MultibufferBadBuffer;
-	}
-	pMultibuffers[i] = pMultibuffer[i]->pMultibuffers;
-	for (j = 0; j < i; j++)
-	    if (pMultibuffers[i] == pMultibuffers[j])
-	    {
-		DEALLOCATE_LOCAL (pMultibuffer);
-		return BadMatch;
-	    }
-    }
-    PerformDisplayRequest (pMultibuffers, pMultibuffer, nbuf);
-    DEALLOCATE_LOCAL (pMultibuffer);
-    return Success;
-}
-
-
-static Bool
-QueueDisplayRequest (client, activateTime)
-    ClientPtr	    client;
-    TimeStamp	    activateTime;
-{
-    /* see xtest.c:ProcXTestFakeInput for code similar to this */
-
-    if (!ClientSleepUntil(client, &activateTime, NULL, NULL))
-    {
-	return FALSE;
-    }
-    /* swap the request back so we can simply re-execute it */
-    if (client->swapped)
-    {
-    	register int    n;
-    	REQUEST (xMbufDisplayImageBuffersReq);
-    	
-    	SwapRestL(stuff);
-    	swaps (&stuff->length, n);
-    	swaps (&stuff->minDelay, n);
-    	swaps (&stuff->maxDelay, n);
-    }
-    ResetCurrentRequest (client);
-    client->sequence--;
-    return TRUE;
-}
-
-
-/*
- * Deliver events to a buffer
- */
-
-static int
-DeliverEventsToMultibuffer (pMultibuffer, pEvents, count, filter)
-    MultibufferPtr	pMultibuffer;
-    xEvent	*pEvents;
-    int		count;
-    Mask	filter;
-{
-    int deliveries = 0, nondeliveries = 0;
-    int attempt;
-    OtherClients *other;
-
-    /* if nobody wants the event, we're done */
-    if (!((pMultibuffer->otherEventMask|pMultibuffer->eventMask) & filter))
-	return 0;
-
-    /* maybe send event to owner */
-    if ((attempt = TryClientEvents(
-	bClient(pMultibuffer), pEvents, count, pMultibuffer->eventMask, filter, (GrabPtr) 0)) != 0)
-    {
-	if (attempt > 0)
-	    deliveries++;
-	else
-	    nondeliveries--;
-    }
-
-    /* maybe send event to other clients */
-    for (other = pMultibuffer->otherClients; other; other=other->next)
-    {
-	if ((attempt = TryClientEvents(
-	      rClient(other), pEvents, count, other->mask, filter, (GrabPtr) 0)) != 0)
-	{
-	    if (attempt > 0)
-		deliveries++;
-	    else
-		nondeliveries--;
-	}
-    }
-    if (deliveries)
-	return deliveries;
-    return nondeliveries;
-}
-
-/*
- * Send Expose events to interested clients
- */
-
-void
-MultibufferExpose (pMultibuffer, pRegion)
-    MultibufferPtr	pMultibuffer;
-    RegionPtr	pRegion;
-{
-    if (pRegion && !RegionNil(pRegion))
-    {
-	xEvent *pEvent;
-	PixmapPtr   pPixmap;
-	register xEvent *pe;
-	register BoxPtr pBox;
-	register int i;
-	int numRects;
-
-	pPixmap = pMultibuffer->pPixmap;
-	RegionTranslate(pRegion,
-		    -pPixmap->drawable.x, -pPixmap->drawable.y);
-	/* XXX MultibufferExpose "knows" the region representation */
-	numRects = RegionNumRects(pRegion);
-	pBox = RegionRects(pRegion);
-
-	pEvent = (xEvent *) ALLOCATE_LOCAL(numRects * sizeof(xEvent));
-	if (pEvent) {
-	    pe = pEvent;
-
-	    for (i=1; i<=numRects; i++, pe++, pBox++)
-	    {
-		pe->u.u.type = Expose;
-		pe->u.expose.window = pPixmap->drawable.id;
-		pe->u.expose.x = pBox->x1;
-		pe->u.expose.y = pBox->y1;
-		pe->u.expose.width = pBox->x2 - pBox->x1;
-		pe->u.expose.height = pBox->y2 - pBox->y1;
-		pe->u.expose.count = (numRects - i);
-	    }
-	    (void) DeliverEventsToMultibuffer (pMultibuffer, pEvent, numRects,
-					       ExposureMask);
-	    DEALLOCATE_LOCAL(pEvent);
-	}
-    }
-}
-
-/* send UpdateNotify event */
-void
-MultibufferUpdate (pMultibuffer, time2)
-    MultibufferPtr	pMultibuffer;
-    CARD32	time2;
-{
-    xMbufUpdateNotifyEvent	event;
-
-    event.type = MultibufferEventBase + MultibufferUpdateNotify;
-    event.buffer = pMultibuffer->pPixmap->drawable.id;
-    event.timeStamp = time2;
-    (void) DeliverEventsToMultibuffer (pMultibuffer, (xEvent *)&event,
-				1, (Mask)MultibufferUpdateNotifyMask);
-}
-
-/*
- * The sample implementation will never generate MultibufferClobberNotify
- * events
- */
-
-void
-MultibufferClobber (pMultibuffer)
-    MultibufferPtr	pMultibuffer;
-{
-    xMbufClobberNotifyEvent	event;
-
-    event.type = MultibufferEventBase + MultibufferClobberNotify;
-    event.buffer = pMultibuffer->pPixmap->drawable.id;
-    event.state = pMultibuffer->clobber;
-    (void) DeliverEventsToMultibuffer (pMultibuffer, (xEvent *)&event,
-				1, (Mask)MultibufferClobberNotifyMask);
-}
-
-/*
- * make the resource id for buffer i refer to the window
- * drawable instead of the pixmap;
- */
-
-static void
-AliasMultibuffer (pMultibuffers, i)
-    MultibuffersPtr	pMultibuffers;
-    int		i;
-{
-    MultibufferPtr	pMultibuffer;
-
-    if (i == pMultibuffers->displayedMultibuffer)
-	return;
-    /*
-     * remove the old association
-     */
-    if (pMultibuffers->displayedMultibuffer >= 0)
-    {
-	pMultibuffer = &pMultibuffers->buffers[pMultibuffers->displayedMultibuffer];
-	ChangeResourceValue (pMultibuffer->pPixmap->drawable.id,
-			     MultibufferDrawableResType,
-			     (void *) pMultibuffer->pPixmap);
-    }
-    /*
-     * make the new association
-     */
-    pMultibuffer = &pMultibuffers->buffers[i];
-    ChangeResourceValue (pMultibuffer->pPixmap->drawable.id,
-			 MultibufferDrawableResType,
-			 (void *) pMultibuffers->pWindow);
-    pMultibuffers->displayedMultibuffer = i;
-}
-
-/*
- * free everything associated with multibuffering for this
- * window
- */
-
-void
-DestroyImageBuffers (pWin)
-    WindowPtr	pWin;
-{
-    FreeResourceByType (pWin->drawable.id, MultibuffersResType, FALSE);
-    /* Zero out the window's pointer to the buffers so they won't be reused */
-    pWin->devPrivates[MultibufferWindowIndex].ptr = NULL;
-}
-
-/*
- * resize the buffers when the window is resized
- */ 
-
-static Bool
-MultibufferPositionWindow (pWin, x, y)
-    WindowPtr	pWin;
-    int		x, y;
-{
-    ScreenPtr	    pScreen;
-    MultibufferScreenPtr pMultibufferScreen;
-    MultibuffersPtr	    pMultibuffers;
-    MultibufferPtr	    pMultibuffer;
-    int		    width, height;
-    int		    i;
-    int		    dx, dy, dw, dh;
-    int		    sourcex, sourcey;
-    int		    destx, desty;
-    PixmapPtr	    pPixmap;
-    GCPtr	    pGC;
-    int		    savewidth, saveheight;
-    xRectangle	    clearRect;
-    Bool	    clear;
-
-    pScreen = pWin->drawable.pScreen;
-    pMultibufferScreen = (MultibufferScreenPtr) pScreen->devPrivates[MultibufferScreenIndex].ptr;
-    (*pMultibufferScreen->PositionWindow) (pWin, x, y);
-
-    /* if this window is not multibuffered, we're done */
-    if (!(pMultibuffers = (MultibuffersPtr) pWin->devPrivates[MultibufferWindowIndex].ptr))
-	return TRUE;
-
-    /* if new size is same as old, we're done */
-    if (pMultibuffers->width == pWin->drawable.width &&
-        pMultibuffers->height == pWin->drawable.height)
-	return TRUE;
-
-    width = pWin->drawable.width;
-    height = pWin->drawable.height;
-    dx = pWin->drawable.x - pMultibuffers->x;
-    dy = pWin->drawable.x - pMultibuffers->y;
-    dw = width - pMultibuffers->width;
-    dh = height - pMultibuffers->height;
-    GravityTranslate (0, 0, -dx, -dy, dw, dh,
-		      pWin->bitGravity, &destx, &desty);
-
-    /* if the window grew, remember to paint the window background,
-     * and maybe send expose events, for the new areas of the buffers
-     */
-    clear = pMultibuffers->width < width || pMultibuffers->height < height ||
-		pWin->bitGravity == ForgetGravity;
-
-    sourcex = 0;
-    sourcey = 0;
-    savewidth = pMultibuffers->width;
-    saveheight = pMultibuffers->height;
-    /* clip rectangle to source and destination */
-    if (destx < 0)
-    {
-	savewidth += destx;
-	sourcex -= destx;
-	destx = 0;
-    }
-    if (destx + savewidth > width)
-	savewidth = width - destx;
-    if (desty < 0)
-    {
-	saveheight += desty;
-	sourcey -= desty;
-	desty = 0;
-    }
-    if (desty + saveheight > height)
-	saveheight = height - desty;
-
-    pMultibuffers->width = width;
-    pMultibuffers->height = height;
-    pMultibuffers->x = pWin->drawable.x;
-    pMultibuffers->y = pWin->drawable.y;
-
-    pGC = GetScratchGC (pWin->drawable.depth, pScreen);
-    if (clear)
-    {
-	SetupBackgroundPainter (pWin, pGC);
-	clearRect.x = 0;
-	clearRect.y = 0;
-	clearRect.width = width;
-	clearRect.height = height;
-    }
-    for (i = 0; i < pMultibuffers->numMultibuffer; i++)
-    {
-	pMultibuffer = &pMultibuffers->buffers[i];
-	pPixmap = (*pScreen->CreatePixmap) (pScreen, width, height,
-					    pWin->drawable.depth);
-	if (!pPixmap)
-	{
-	    DestroyImageBuffers (pWin);
-	    break;
-	}
-	ValidateGC ((DrawablePtr)pPixmap, pGC);
-	/*
-	 * I suppose this could avoid quite a bit of work if
-	 * it computed the minimal area required.
-	 */
-	if (clear)
-	    (*pGC->ops->PolyFillRect) ((DrawablePtr)pPixmap, pGC, 1, &clearRect);
-	if (pWin->bitGravity != ForgetGravity)
-	{
-	    (*pGC->ops->CopyArea) ((DrawablePtr)pMultibuffer->pPixmap,
-				   (DrawablePtr)pPixmap, pGC,
-				    sourcex, sourcey, savewidth, saveheight,
-				    destx, desty);
-	}
-	pPixmap->drawable.id = pMultibuffer->pPixmap->drawable.id;
-	(*pScreen->DestroyPixmap) (pMultibuffer->pPixmap);
-	pMultibuffer->pPixmap = pPixmap;
-	if (i != pMultibuffers->displayedMultibuffer)
-	{
-	    ChangeResourceValue (pPixmap->drawable.id,
-				 MultibufferDrawableResType,
-				 (void *) pPixmap);
-	}
-    }
-    FreeScratchGC (pGC);
-    return TRUE;
-}
-
-/* Resource delete func for MultibufferDrawableResType */
-/*ARGSUSED*/
-static int
-MultibufferDrawableDelete (value, id)
-    void	*value;
-    XID		id;
-{
-    DrawablePtr	pDrawable = (DrawablePtr)value;
-    WindowPtr	pWin;
-    MultibuffersPtr	pMultibuffers;
-    PixmapPtr	pPixmap;
-
-    if (pDrawable->type == DRAWABLE_WINDOW)
-    {
-	pWin = (WindowPtr) pDrawable;
-	pMultibuffers = (MultibuffersPtr) pWin->devPrivates[MultibufferWindowIndex].ptr;
-	pPixmap = pMultibuffers->buffers[pMultibuffers->displayedMultibuffer].pPixmap;
-    }
-    else
-    {
-	pPixmap = (PixmapPtr) pDrawable;
-    }
-    (*pPixmap->drawable.pScreen->DestroyPixmap) (pPixmap);
-    return Success;
-}
-
-/* Resource delete func for MultibufferResType */
-/*ARGSUSED*/
-static int
-MultibufferDelete (value, id)
-    void	*value;
-    XID		id;
-{
-    MultibufferPtr	pMultibuffer = (MultibufferPtr)value;
-    MultibuffersPtr	pMultibuffers;
-
-    pMultibuffers = pMultibuffer->pMultibuffers;
-    if (--pMultibuffers->refcnt == 0)
-    {
-	FreeResourceByType (pMultibuffers->pWindow->drawable.id,
-			    MultibuffersResType, TRUE);
-	xfree (pMultibuffers);
-    }
-    return Success;
-}
-
-/* Resource delete func for MultibuffersResType */
-/*ARGSUSED*/
-static int
-MultibuffersDelete (value, id)
-    void	*value;
-    XID		id;
-{
-    MultibuffersPtr	pMultibuffers = (MultibuffersPtr)value;
-    int	i;
-
-    if (pMultibuffers->refcnt == pMultibuffers->numMultibuffer)
-    {
-	for (i = pMultibuffers->numMultibuffer; --i >= 0; )
-	    FreeResource (pMultibuffers->buffers[i].pPixmap->drawable.id, 0);
-    }
-    return Success;
-}
-
-/* Resource delete func for OtherClientResType */
-static int
-OtherClientDelete (value, id)
-    void	*value;
-    XID		id;
-{
-    MultibufferPtr	pMultibuffer = (MultibufferPtr)value;
-    register OtherClientsPtr	other, prev;
-
-    prev = 0;
-    for (other = pMultibuffer->otherClients; other; other = other->next)
-    {
-	if (other->resource == id)
-	{
-	    if (prev)
-		prev->next = other->next;
-	    else
-		pMultibuffer->otherClients = other->next;
-	    xfree (other);
-	    RecalculateMultibufferOtherEvents (pMultibuffer);
-	    break;
-	}
-	prev = other;
-    }
-    return Success;
-}
-
-static int
-EventSelectForMultibuffer (pMultibuffer, client, mask)
-    MultibufferPtr	pMultibuffer;
-    ClientPtr	client;
-    Mask	mask;
-{
-    OtherClientsPtr	other;
-
-    if (mask & ~ValidEventMasks)
-    {
-	client->errorValue = mask;
-	return BadValue;
-    }
-    if (bClient (pMultibuffer) == client)
-    {
-	pMultibuffer->eventMask = mask;
-    }
-    else /* some other client besides the creator wants events */
-    {
-	for (other = pMultibuffer->otherClients; other; other = other->next)
-	{
-	    if (SameClient (other, client))
-	    {
-		if (mask == 0)
-		{
-		    FreeResource (other->resource, RT_NONE);
-		    break;
-		}
-		other->mask = mask;
-		break;
-	    }
-	}
-	if (!other)
-	{ /* new client that never selected events on this buffer before */
-	    other = (OtherClients *) xalloc (sizeof (OtherClients));
-	    if (!other)
-		return BadAlloc;
-	    other->mask = mask;
-	    other->resource = FakeClientID (client->index);
-	    if (!AddResource (other->resource, OtherClientResType, (void *) pMultibuffer))
-	    {
-		xfree (other);
-		return BadAlloc;
-	    }
-	    other->next = pMultibuffer->otherClients;
-	    pMultibuffer->otherClients = other;
-	}
-	RecalculateMultibufferOtherEvents (pMultibuffer);
-    }
-    return (client->noClientException);
-}
-
-/* or together all the otherClients event masks */
-static void
-RecalculateMultibufferOtherEvents (pMultibuffer)
-    MultibufferPtr	pMultibuffer;
-{
-    Mask	    otherEventMask;
-    OtherClients    *other;
-
-    otherEventMask = 0L;
-    for (other = pMultibuffer->otherClients; other; other = other->next)
-	otherEventMask |= other->mask;
-    pMultibuffer->otherEventMask = otherEventMask;
-}
-
-/* add milliseconds to a timestamp, handling overflow */
-static void
-BumpTimeStamp (ts, inc)
-TimeStamp   *ts;
-CARD32	    inc;
-{
-    CARD32  newms;
-
-    newms = ts->milliseconds + inc;
-    if (newms < ts->milliseconds)
-	ts->months++;
-    ts->milliseconds = newms;
-}