Death to Multibuffer extension

The rationale behind is because no sane application will use this when we have
modern APIs such DRI2. Besides, as a fact, xfree86 server has already
deprecated this extension in 1998:

    http://www.xfree86.org/3.3.6/isc7.html

Signed-off-by: Tiago Vignatti <tiago.vignatti@nokia.com>
Reviewed-by: Keith Packard <keithp@keithp.com>

1 files changed, 0 insertions, 648 deletions

diff --git a/Xext/mbufpx.c b/Xext/mbufpx.c
deleted file mode 100644
index 8421ba9eb..000000000
--- a/Xext/mbufpx.c
+++ /dev/null
@@ -1,648 +0,0 @@
-/************************************************************
-
-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.
-
-********************************************************/
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <stdio.h>
-#include <X11/X.h>
-#include <X11/Xproto.h>
-#include "misc.h"
-#include "os.h"
-#include "windowstr.h"
-#include "scrnintstr.h"
-#include "pixmapstr.h"
-#include "extnsionst.h"
-#include "dixstruct.h"
-#include "resource.h"
-#include "opaque.h"
-#include "regionstr.h"
-#include "gcstruct.h"
-#include "inputstr.h"
-#include <sys/time.h>
-
-#define _MULTIBUF_SERVER_	/* don't want Xlib structures */
-#define _MULTIBUF_PIXMAP_
-#include <X11/extensions/multibufst.h>
-
-
-static Bool NoopDDA_True() { return TRUE; }
-
-static Bool pixPositionWindow();
-static int  pixCreateImageBuffers();
-static void pixDisplayImageBuffers();
-static void pixClearImageBufferArea();
-static void pixDeleteBufferDrawable();
-static void pixWrapScreenFuncs();
-static void pixResetProc();
-
-Bool
-pixMultibufferInit(pScreen, pMBScreen)
-    ScreenPtr pScreen;
-    mbufScreenPtr pMBScreen;
-{
-    int			i, j, k;
-    xMbufBufferInfo	*pInfo;
-    int			nInfo;
-    DepthPtr		pDepth;
-    mbufPixmapPrivPtr	pMBPriv;
-
-    pMBScreen->CreateImageBuffers = pixCreateImageBuffers;
-    pMBScreen->DestroyImageBuffers = (void (*)())NoopDDA;
-    pMBScreen->DisplayImageBuffers = pixDisplayImageBuffers;
-    pMBScreen->ClearImageBufferArea = pixClearImageBufferArea;
-    pMBScreen->ChangeMBufferAttributes = NoopDDA_True;
-    pMBScreen->ChangeBufferAttributes = NoopDDA_True;
-    pMBScreen->DeleteBufferDrawable = pixDeleteBufferDrawable;
-    pMBScreen->WrapScreenFuncs = pixWrapScreenFuncs;
-    pMBScreen->ResetProc = pixResetProc;
-
-    /* Support every depth and visual combination that the screen does */
-
-    nInfo = 0;
-    for (i = 0; i < pScreen->numDepths; i++)
-    {
-	pDepth = &pScreen->allowedDepths[i];
-	nInfo += pDepth->numVids;
-    }
-
-    pInfo = xalloc (nInfo * sizeof (xMbufBufferInfo));
-    if (!pInfo)
-	return FALSE;
-
-    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;
-	    k++;
-	}
-    }
-
-    pMBScreen->nInfo = nInfo;
-    pMBScreen->pInfo = pInfo;
-
-    /*
-     * Setup the devPrivate to mbufScreenRec
-     */
-
-    pMBPriv = xalloc(sizeof(* pMBPriv));
-    if (!pMBPriv)
-    {
-	xfree(pInfo);
-	return (FALSE);
-    }
-    pMBScreen->devPrivate.ptr = (pointer) pMBPriv;
-    pMBPriv->PositionWindow = NULL;
-    pMBPriv->funcsWrapped = 0;
-
-    return TRUE;
-}
-
-/*ARGSUSED*/
-static int
-pixCreateImageBuffers (pWin, nbuf, ids, action, hint)
-    WindowPtr	pWin;
-    int		nbuf;
-    XID		*ids;
-    int		action;
-    int		hint;
-{
-    mbufWindowPtr	pMBWindow;
-    mbufBufferPtr	pMBBuffer;
-    ScreenPtr		pScreen;
-    int			width, height, depth;
-    int			i;
-
-    pMBWindow = MB_WINDOW_PRIV(pWin);
-
-    width = pWin->drawable.width;
-    height = pWin->drawable.height;
-    depth = pWin->drawable.depth;
-    pScreen = pWin->drawable.pScreen;
-
-    for (i = 0; i < nbuf; i++)
-    {
-	pMBBuffer = &pMBWindow->buffers[i];
-	pMBBuffer->pDrawable = (DrawablePtr)
-	    (*pScreen->CreatePixmap) (pScreen, width, height, depth, 0);
-	if (!pMBBuffer->pDrawable)
-	    break;
-
-	if (!AddResource (ids[i], MultibufferDrawableResType,
-			  (pointer) pMBBuffer->pDrawable))
-	{
-	    (*pScreen->DestroyPixmap) ((PixmapPtr) pMBBuffer->pDrawable);
-	    break;
-	}
-	pMBBuffer->pDrawable->id = ids[i];
-
-	/*
-	 * In the description of the CreateImageBuffers request:
-         * "If the window is mapped, or if these image buffers have
-         *  backing store, their contents will be tiled with the window
-         *  background, and zero or more expose events will be generated
-         *  for each of these buffers."
-	 */
-
-	(* MB_SCREEN_PRIV(pScreen)->ClearImageBufferArea)
-	    (pMBBuffer, 0,0, 0,0, TRUE);
-    }
-
-    return i;
-}
-
-/*
- * set up the gc to clear the pixmaps;
- */
-static Bool
-SetupBackgroundPainter (pWin, pGC)
-    WindowPtr	pWin;
-    GCPtr	pGC;
-{
-    XID		    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] = (XID) background.pixel;
-	gcvalues[1] = FillSolid;
-	gcmask = GCForeground|GCFillStyle;
-	break;
-
-    case BackgroundPixmap:
-	gcvalues[0] = FillTiled;
-	gcvalues[1] = (XID) background.pixmap;
-	gcvalues[2] = ts_x_origin;
-	gcvalues[3] = ts_y_origin;
-	gcmask = GCFillStyle|GCTile|GCTileStipXOrigin|GCTileStipYOrigin;
-	break;
-
-    default:
-	return FALSE;
-    }
-    DoChangeGC(pGC, gcmask, gcvalues, TRUE);
-    return TRUE;
-}
-
-static void
-MultibufferPaintBackgroundRectangles(pWin, pDrawable, nrects, pRects)
-    WindowPtr pWin;
-    DrawablePtr pDrawable;
-    int nrects;
-    xRectangle *pRects;
-{
-    GCPtr      pGC;
-
-    pGC = GetScratchGC (pWin->drawable.depth, pWin->drawable.pScreen);
-    if (SetupBackgroundPainter(pWin, pGC))
-    {
-	ValidateGC(pDrawable, pGC);
-	(*pGC->ops->PolyFillRect) (pDrawable, pGC, nrects, pRects);
-    }
-    FreeScratchGC(pGC);
-}
-
-static void
-MultibufferPaintBackgroundRegion(pWin, pDrawable, pRegion)
-    WindowPtr pWin;
-    DrawablePtr pDrawable;
-    RegionPtr pRegion;
-{
-    xRectangle *pRects;
-    int nrects  = REGION_NUM_RECTS(pRegion);
-    BoxPtr pbox = REGION_RECTS(pRegion);
-
-    pRects = xalloc(nrects * sizeof(xRectangle));
-    if (pRects)
-    {
-	int i;
-	for (i = 0; i < nrects; i++)
-	{
-	    pRects[i].x = pbox->x1;
-	    pRects[i].y = pbox->y1;
-	    pRects[i].width  = pbox->x2 - pbox->x1;
-	    pRects[i].height = pbox->y2 - pbox->y1;
-	}
-	MultibufferPaintBackgroundRectangles(pWin, pDrawable, nrects, pRects);
-	xfree(pRects);
-    }
-}
-
-static void
-pixDisplayImageBuffers(pScreen, ppMBWindow, ppMBBuffer, nbuf)
-    mbufBufferPtr	    *ppMBBuffer;
-    mbufWindowPtr	    *ppMBWindow;
-    int		    nbuf;
-{
-    GCPtr	    pGC = NULL;
-    PixmapPtr	    pPrevPixmap, pNewPixmap;
-    WindowPtr	    pWin;
-    RegionPtr	    pExposed;
-    int		    i;
-    mbufBufferPtr  pPrevMBBuffer;
-    XID		    bool;
-    xRectangle      r;
-
-    UpdateCurrentTime ();
-    for (i = 0; i < nbuf; i++)
-    {
-	pWin = ppMBWindow[i]->pWindow;
-
-	/* Time to get a different scratch GC? */
-
-	if (!pGC
-	    || pGC->depth   != pWin->drawable.depth
-	    || pGC->pScreen != pWin->drawable.pScreen)
-	{
-	    if (pGC) FreeScratchGC(pGC);
-	    pGC = GetScratchGC (pWin->drawable.depth, pWin->drawable.pScreen);
-	}
-	pPrevMBBuffer = MB_DISPLAYED_BUFFER(ppMBWindow[i]);
-	pPrevPixmap = (PixmapPtr) pPrevMBBuffer->pDrawable;
-	pNewPixmap = (PixmapPtr) ppMBBuffer[i]->pDrawable;
-
-	if (pPrevPixmap == pNewPixmap)
-	{
-	  /* "If a specified buffer is already displayed, any delays and
-	   *  update action will still be performed for that buffer."
-	   *
-	   *  We special-case this because applications do occasionally
-	   *  request a redundant DisplayImageBuffers, and we can save
-	   *  strokes by recognizing that the only update action that will
-	   *  change the buffer contents in this case is Background.
-	   */
-	    if (ppMBWindow[i]->updateAction == MultibufferUpdateActionBackground)
-	    {
-		r.x = r.y = 0;
-		r.width  = pWin->drawable.width;
-		r.height = pWin->drawable.height;
-		MultibufferPaintBackgroundRectangles(pWin, (DrawablePtr)pWin,
-						     1, &r);
-	    }
-	}
-	else /* different buffer is being displayed */
-	{
-	    /* perform update action */
-
-	    switch (ppMBWindow[i]->updateAction)
-	    {
-	    case MultibufferUpdateActionUndefined:
-		break;
-
-	    case MultibufferUpdateActionBackground:
-
-		r.x = r.y = 0;
-		r.width  = pPrevPixmap->drawable.width;
-		r.height = pPrevPixmap->drawable.height;
-		MultibufferPaintBackgroundRectangles(pWin,
-						     (DrawablePtr)pPrevPixmap,
-						     1, &r);
-		break;
-
-	    case MultibufferUpdateActionUntouched:
-		
-		/* copy the window to the pixmap that represents the
-		 * currently displayed buffer
-		 */
-
-		if (pPrevMBBuffer->eventMask & ExposureMask)
-		{
-		    bool = TRUE;
-		    DoChangeGC (pGC, GCGraphicsExposures, &bool, 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 (pPrevMBBuffer->eventMask & ExposureMask)
-		{ /* some client wants expose events */
-		    if (pExposed)
-		    {
-			RegionPtr	 pWinSize;
-			extern RegionPtr CreateUnclippedWinSize();
-			ScreenPtr pScreen = pWin->drawable.pScreen;
-			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.
-			 */
-			REGION_TRANSLATE(pScreen, pWinSize,
-						     -pWin->drawable.x,
-						     -pWin->drawable.y);
-			REGION_INTERSECT(pScreen, pExposed, pExposed, pWinSize);
-			REGION_DESTROY(pScreen, pWinSize);
-			MultibufferExpose (pPrevMBBuffer, pExposed);
-			REGION_DESTROY(pScreen, pExposed);
-		    }
-		    bool = FALSE;
-		    DoChangeGC (pGC, GCGraphicsExposures, &bool, FALSE);
-		} /* end some client wants expose events */
-
-		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);
-	}
-
-	ppMBWindow[i]->lastUpdate = currentTime;
-    }
-
-    if (pGC) FreeScratchGC (pGC);
-    return;
-}
-
-/*
- * resize the buffers when the window is resized
- */ 
-
-static Bool
-pixPositionWindow (pWin, x, y)
-    WindowPtr	pWin;
-    int		x, y;
-{
-    ScreenPtr	    pScreen;
-    mbufPixmapPrivPtr pMBPriv;
-    mbufWindowPtr   pMBWindow;
-    mbufBufferPtr   pMBBuffer;
-    int		    width, height;
-    int		    i;
-    int		    dx, dy, dw, dh;
-    int		    sourcex, sourcey;
-    int		    destx, desty;
-    PixmapPtr	    pPixmap;
-    GCPtr	    pGC;
-    int		    savewidth, saveheight;
-    Bool	    clear;
-    RegionRec       exposedRegion;
-    Bool	    ret;
-
-    pScreen = pWin->drawable.pScreen;
-    pMBPriv = MB_SCREEN_PRIV_PIXMAP(pScreen);
-
-    UNWRAP_SCREEN_FUNC(pScreen, pMBPriv, Bool, PositionWindow);
-    ret = (* pScreen->PositionWindow) (pWin, x, y);
-    REWRAP_SCREEN_FUNC(pScreen, pMBPriv, Bool, PositionWindow);
-
-    if (!(pMBWindow = MB_WINDOW_PRIV(pWin)))
-	return ret;
-
-    /* if new size is same as old, we're done */
-
-    if (pMBWindow->width == pWin->drawable.width &&
-        pMBWindow->height == pWin->drawable.height)
-	return ret;
-
-    width = pWin->drawable.width;
-    height = pWin->drawable.height;
-    dx = pWin->drawable.x - pMBWindow->x;
-    dy = pWin->drawable.x - pMBWindow->y;
-    dw = width - pMBWindow->width;
-    dh = height - pMBWindow->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 = pMBWindow->width < width || pMBWindow->height < height ||
-	    pWin->bitGravity == ForgetGravity;
-
-    sourcex = 0;
-    sourcey = 0;
-    savewidth = pMBWindow->width;
-    saveheight = pMBWindow->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;
-
-    pMBWindow->width = width;
-    pMBWindow->height = height;
-    pMBWindow->x = pWin->drawable.x;
-    pMBWindow->y = pWin->drawable.y;
-
-    if (clear)
-    {
-	BoxRec box;
-
-	box.x1 = box.y1 = 0;
-	box.x2 = width;
-	box.y2 = height;
-	REGION_INIT(pScreen, &exposedRegion, &box, 1);
-	if (pWin->bitGravity != ForgetGravity)
-	{
-	    RegionRec preservedRegion;
-	    box.x1 = destx;
-	    box.y1 = desty;
-	    box.x2 = destx + savewidth;
-	    box.y2 = desty + saveheight;
-	    REGION_INIT(pScreen, &preservedRegion, &box, 1);
-	    REGION_SUBTRACT(pScreen, &exposedRegion, &exposedRegion, &preservedRegion);
-	    REGION_UNINIT(pScreen, &preservedRegion);
-	}
-
-    } /* end if (clear) */
-
-    pGC = GetScratchGC (pWin->drawable.depth, pScreen);
-
-    /* create buffers with new window size */
-
-    for (i = 0; i < pMBWindow->numMultibuffer; i++)
-    {
-	pMBBuffer = &pMBWindow->buffers[i];
-	pPixmap = (*pScreen->CreatePixmap) (pScreen, width, height, pWin->drawable.depth,
-					    CREATE_PIXMAP_USAGE_SCRATCH);
-	if (!pPixmap)
-	{
-	    (* MB_SCREEN_PRIV(pScreen)->DestroyImageBuffers)(pWin);
-	    break;
-	}
-	if (clear)
-	{
-	    MultibufferPaintBackgroundRegion(pWin, (DrawablePtr)pPixmap, &exposedRegion);
-	    MultibufferExpose(pMBBuffer, &exposedRegion);
-	}
-	if (pWin->bitGravity != ForgetGravity)
-	{
-	    ValidateGC ((DrawablePtr)pPixmap, pGC);
-	    (*pGC->ops->CopyArea) (pMBBuffer->pDrawable, (DrawablePtr)pPixmap,
-				   pGC,
-				   sourcex, sourcey, savewidth, saveheight,
-				   destx, desty);
-	}
-	pPixmap->drawable.id = pMBBuffer->pDrawable->id;
-	(*pScreen->DestroyPixmap) ((PixmapPtr) pMBBuffer->pDrawable);
-	pMBBuffer->pDrawable = (DrawablePtr) pPixmap;
-	if (i != pMBWindow->displayedMultibuffer)
-	{
-	    ChangeResourceValue (pPixmap->drawable.id,
-				 MultibufferDrawableResType,
-				 (pointer) pPixmap);
-	}
-    }
-    FreeScratchGC (pGC);
-    if (clear)
-	REGION_UNINIT(pScreen, &exposedRegion);
-    return TRUE;
-}
-
-static void
-pixWrapScreenFuncs(pScreen)
-    ScreenPtr pScreen;
-{
-    mbufPixmapPrivPtr pMBPriv = MB_SCREEN_PRIV_PIXMAP(pScreen);
-    WRAP_SCREEN_FUNC(pScreen, pMBPriv, PositionWindow, pixPositionWindow);
-}
-
-static void
-pixResetProc(pScreen)
-    ScreenPtr pScreen;
-{
-    mbufScreenPtr pMBScreen = MB_SCREEN_PRIV(pScreen);
-    mbufPixmapPrivPtr pMBPriv = MB_SCREEN_PRIV_PIXMAP(pScreen);
-
-    xfree(pMBScreen->pInfo);
-    xfree(pMBPriv);
-}
-
-static void
-pixClearImageBufferArea(pMBBuffer, x,y, width,height, exposures)
-    mbufBufferPtr	pMBBuffer;
-    short		x, y;
-    unsigned short	width, height;
-    Bool		exposures;
-{
-    WindowPtr pWin;
-    ScreenPtr pScreen;
-    BoxRec box;
-    RegionRec region;
-    int w_width, w_height;
-    DrawablePtr pDrawable;
-
-    pWin = pMBBuffer->pMBWindow->pWindow;
-    pScreen = pWin->drawable.pScreen;
-
-    w_width  = pWin->drawable.width;
-    w_height = pWin->drawable.height;
-
-    box.x1 = x;
-    box.y1 = y;
-    box.x2 = width  ? (box.x1 + width)  : w_width;
-    box.y2 = height ? (box.y1 + height) : w_height;
-
-    if (box.x1 < 0)        box.x1 = 0;
-    if (box.y1 < 0)        box.y1 = 0;
-    if (box.x2 > w_width)  box.x2 = w_width;
-    if (box.y2 > w_height) box.y2 = w_height;
-
-    REGION_INIT(pScreen, &region, &box, 1);
-
-    if (pMBBuffer->number == pMBBuffer->pMBWindow->displayedMultibuffer)
-      pDrawable = (DrawablePtr) pWin;
-    else
-      pDrawable = pMBBuffer->pDrawable;
-
-    MultibufferPaintBackgroundRegion(pWin, pDrawable, &region);
-
-    if (exposures)
-	MultibufferExpose(pMBBuffer, &region);
-
-    REGION_UNINIT(pScreen, &region);
-}
-
-static void
-pixDeleteBufferDrawable(pDrawable)
-    DrawablePtr	pDrawable;
-{
-    (* pDrawable->pScreen->DestroyPixmap)((PixmapPtr) pDrawable);
-}