svn merge https://vcxsrv.svn.sourceforge.net/svnroot/vcxsrv/branches/released .

1 files changed, 1293 insertions, 1292 deletions

diff --git a/xorg-server/exa/exa_accel.c b/xorg-server/exa/exa_accel.c
index f83a69b35..8f136218f 100644
--- a/xorg-server/exa/exa_accel.c
+++ b/xorg-server/exa/exa_accel.c
@@ -1,1292 +1,1293 @@
-/*
- * Copyright © 2001 Keith Packard
- *
- * Partly based on code that is Copyright © The XFree86 Project Inc.
- *
- * 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, and that the name of Keith Packard not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission.  Keith Packard makes no
- * representations about the suitability of this software for any purpose.  It
- * is provided "as is" without express or implied warranty.
- *
- * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- *
- * Authors:
- *    Eric Anholt <eric@anholt.net>
- *    Michel Dänzer <michel@tungstengraphics.com>
- *
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-#include "exa_priv.h"
-#include <X11/fonts/fontstruct.h>
-#include "dixfontstr.h"
-#include "exa.h"
-
-static void
-exaFillSpans(DrawablePtr pDrawable, GCPtr pGC, int n,
-	     DDXPointPtr ppt, int *pwidth, int fSorted)
-{
-    ScreenPtr	    pScreen = pDrawable->pScreen;
-    ExaScreenPriv (pScreen);
-    RegionPtr	    pClip = fbGetCompositeClip(pGC);
-    PixmapPtr	    pPixmap = exaGetDrawablePixmap (pDrawable);
-    ExaPixmapPriv (pPixmap);
-    BoxPtr	    pextent, pbox;
-    int		    nbox;
-    int		    extentX1, extentX2, extentY1, extentY2;
-    int		    fullX1, fullX2, fullY1;
-    int		    partX1, partX2;
-    int		    off_x, off_y;
-
-    if (pExaScr->swappedOut ||
-	pGC->fillStyle != FillSolid ||
-	pExaPixmap->accel_blocked)
-    {
-	ExaCheckFillSpans (pDrawable, pGC, n, ppt, pwidth, fSorted);
-	return;
-    }
-
-    if (pExaScr->do_migration) {
-	ExaMigrationRec pixmaps[1];
-
-	pixmaps[0].as_dst = TRUE;
-	pixmaps[0].as_src = FALSE;
-	pixmaps[0].pPix = pPixmap;
-	pixmaps[0].pReg = NULL;
-
-	exaDoMigration (pixmaps, 1, TRUE);
-    }
-
-    if (!(pPixmap = exaGetOffscreenPixmap (pDrawable, &off_x, &off_y)) ||
-	!(*pExaScr->info->PrepareSolid) (pPixmap,
-					 pGC->alu,
-					 pGC->planemask,
-					 pGC->fgPixel))
-    {
-	ExaCheckFillSpans (pDrawable, pGC, n, ppt, pwidth, fSorted);
-	return;
-    }
-
-    pextent = REGION_EXTENTS(pGC->pScreen, pClip);
-    extentX1 = pextent->x1;
-    extentY1 = pextent->y1;
-    extentX2 = pextent->x2;
-    extentY2 = pextent->y2;
-    while (n--)
-    {
-	fullX1 = ppt->x;
-	fullY1 = ppt->y;
-	fullX2 = fullX1 + (int) *pwidth;
-	ppt++;
-	pwidth++;
-
-	if (fullY1 < extentY1 || extentY2 <= fullY1)
-	    continue;
-
-	if (fullX1 < extentX1)
-	    fullX1 = extentX1;
-
-	if (fullX2 > extentX2)
-	    fullX2 = extentX2;
-
-	if (fullX1 >= fullX2)
-	    continue;
-
-	nbox = REGION_NUM_RECTS (pClip);
-	if (nbox == 1)
-	{
-	    (*pExaScr->info->Solid) (pPixmap,
-				     fullX1 + off_x, fullY1 + off_y,
-				     fullX2 + off_x, fullY1 + 1 + off_y);
-	}
-	else
-	{
-	    pbox = REGION_RECTS(pClip);
-	    while(nbox--)
-	    {
-		if (pbox->y1 <= fullY1 && fullY1 < pbox->y2)
-		{
-		    partX1 = pbox->x1;
-		    if (partX1 < fullX1)
-			partX1 = fullX1;
-		    partX2 = pbox->x2;
-		    if (partX2 > fullX2)
-			partX2 = fullX2;
-		    if (partX2 > partX1) {
-			(*pExaScr->info->Solid) (pPixmap,
-						 partX1 + off_x, fullY1 + off_y,
-						 partX2 + off_x, fullY1 + 1 + off_y);
-		    }
-		}
-		pbox++;
-	    }
-	}
-    }
-    (*pExaScr->info->DoneSolid) (pPixmap);
-    exaMarkSync(pScreen);
-}
-
-static Bool
-exaDoPutImage (DrawablePtr pDrawable, GCPtr pGC, int depth, int x, int y,
-	       int w, int h, int format, char *bits, int src_stride)
-{
-    ExaScreenPriv (pDrawable->pScreen);
-    PixmapPtr pPix = exaGetDrawablePixmap (pDrawable);
-    ExaPixmapPriv(pPix);
-    RegionPtr pClip;
-    BoxPtr pbox;
-    int nbox;
-    int xoff, yoff;
-    int bpp = pDrawable->bitsPerPixel;
-    Bool ret = TRUE;
-
-    if (pExaPixmap->accel_blocked || !pExaScr->info->UploadToScreen)
-	return FALSE;
-
-    /* Don't bother with under 8bpp, XYPixmaps. */
-    if (format != ZPixmap || bpp < 8)
-	return FALSE;
-
-    /* Only accelerate copies: no rop or planemask. */
-    if (!EXA_PM_IS_SOLID(pDrawable, pGC->planemask) || pGC->alu != GXcopy)
-	return FALSE;
-
-    if (pExaScr->swappedOut)
-	return FALSE;
-
-    if (pExaScr->do_migration) {
-	ExaMigrationRec pixmaps[1];
-
-	pixmaps[0].as_dst = TRUE;
-	pixmaps[0].as_src = FALSE;
-	pixmaps[0].pPix = pPix;
-	pixmaps[0].pReg = DamagePendingRegion(pExaPixmap->pDamage);
-
-	exaDoMigration (pixmaps, 1, TRUE);
-    }
-
-    pPix = exaGetOffscreenPixmap (pDrawable, &xoff, &yoff);
-
-    if (!pPix)
-	return FALSE;
-
-    x += pDrawable->x;
-    y += pDrawable->y;
-
-    pClip = fbGetCompositeClip(pGC);
-    for (nbox = REGION_NUM_RECTS(pClip),
-	 pbox = REGION_RECTS(pClip);
-	 nbox--;
-	 pbox++)
-    {
-	int x1 = x;
-	int y1 = y;
-	int x2 = x + w;
-	int y2 = y + h;
-	char *src;
-	Bool ok;
-
-	if (x1 < pbox->x1)
-	    x1 = pbox->x1;
-	if (y1 < pbox->y1)
-	    y1 = pbox->y1;
-	if (x2 > pbox->x2)
-	    x2 = pbox->x2;
-	if (y2 > pbox->y2)
-	    y2 = pbox->y2;
-	if (x1 >= x2 || y1 >= y2)
-	    continue;
-
-	src = bits + (y1 - y) * src_stride + (x1 - x) * (bpp / 8);
-	ok = pExaScr->info->UploadToScreen(pPix, x1 + xoff, y1 + yoff,
-					   x2 - x1, y2 - y1, src, src_stride);
-	/* We have to fall back completely, and ignore what has already been completed.
-	 * Messing with the fb layer directly like we used to is completely unacceptable.
-	 */
-	if (!ok) {
-	    ret = FALSE;
-	    break;
-	}
-    }
-
-    if (ret)
-	exaMarkSync(pDrawable->pScreen);
-
-    return ret;
-}
-
-static void
-exaPutImage (DrawablePtr pDrawable, GCPtr pGC, int depth, int x, int y,
-	     int w, int h, int leftPad, int format, char *bits)
-{
-    if (!exaDoPutImage(pDrawable, pGC, depth, x, y, w, h, format, bits,
-		       PixmapBytePad(w, pDrawable->depth)))
-	ExaCheckPutImage(pDrawable, pGC, depth, x, y, w, h, leftPad, format,
-			 bits);
-}
-
-static Bool __inline
-exaCopyNtoNTwoDir (DrawablePtr pSrcDrawable, DrawablePtr pDstDrawable,
-		   GCPtr pGC, BoxPtr pbox, int nbox, int dx, int dy)
-{
-    ExaScreenPriv (pDstDrawable->pScreen);
-    PixmapPtr pSrcPixmap, pDstPixmap;
-    int src_off_x, src_off_y, dst_off_x, dst_off_y;
-    int dirsetup;
-
-    /* Need to get both pixmaps to call the driver routines */
-    pSrcPixmap = exaGetOffscreenPixmap (pSrcDrawable, &src_off_x, &src_off_y);
-    pDstPixmap = exaGetOffscreenPixmap (pDstDrawable, &dst_off_x, &dst_off_y);
-    if (!pSrcPixmap || !pDstPixmap)
-	return FALSE;
-
-    /*
-     * Now the case of a chip that only supports xdir = ydir = 1 or
-     * xdir = ydir = -1, but we have xdir != ydir.
-     */
-    dirsetup = 0;	/* No direction set up yet. */
-    for (; nbox; pbox++, nbox--) {
-	if (dx >= 0 && (src_off_y + pbox->y1 + dy) != pbox->y1) {
-	    /* Do a xdir = ydir = -1 blit instead. */
-	    if (dirsetup != -1) {
-		if (dirsetup != 0)
-		    pExaScr->info->DoneCopy(pDstPixmap);
-		dirsetup = -1;
-		if (!(*pExaScr->info->PrepareCopy)(pSrcPixmap,
-						   pDstPixmap,
-						   -1, -1,
-						   pGC ? pGC->alu : GXcopy,
-						   pGC ? pGC->planemask :
-							 FB_ALLONES))
-		    return FALSE;
-	    }
-	    (*pExaScr->info->Copy)(pDstPixmap,
-				   src_off_x + pbox->x1 + dx,
-				   src_off_y + pbox->y1 + dy,
-				   dst_off_x + pbox->x1,
-				   dst_off_y + pbox->y1,
-				   pbox->x2 - pbox->x1,
-				   pbox->y2 - pbox->y1);
-	} else if (dx < 0 && (src_off_y + pbox->y1 + dy) != pbox->y1) {
-	    /* Do a xdir = ydir = 1 blit instead. */
-	    if (dirsetup != 1) {
-		if (dirsetup != 0)
-		    pExaScr->info->DoneCopy(pDstPixmap);
-		dirsetup = 1;
-		if (!(*pExaScr->info->PrepareCopy)(pSrcPixmap,
-						   pDstPixmap,
-						   1, 1,
-						   pGC ? pGC->alu : GXcopy,
-						   pGC ? pGC->planemask :
-							 FB_ALLONES))
-		    return FALSE;
-	    }
-	    (*pExaScr->info->Copy)(pDstPixmap,
-				   src_off_x + pbox->x1 + dx,
-				   src_off_y + pbox->y1 + dy,
-				   dst_off_x + pbox->x1,
-				   dst_off_y + pbox->y1,
-				   pbox->x2 - pbox->x1,
-				   pbox->y2 - pbox->y1);
-	} else if (dx >= 0) {
-	    /*
-	     * xdir = 1, ydir = -1.
-	     * Perform line-by-line xdir = ydir = 1 blits, going up.
-	     */
-	    int i;
-	    if (dirsetup != 1) {
-		if (dirsetup != 0)
-		    pExaScr->info->DoneCopy(pDstPixmap);
-		dirsetup = 1;
-		if (!(*pExaScr->info->PrepareCopy)(pSrcPixmap,
-						   pDstPixmap,
-						   1, 1,
-						   pGC ? pGC->alu : GXcopy,
-						   pGC ? pGC->planemask :
-							 FB_ALLONES))
-		    return FALSE;
-	    }
-	    for (i = pbox->y2 - pbox->y1 - 1; i >= 0; i--)
-		(*pExaScr->info->Copy)(pDstPixmap,
-				       src_off_x + pbox->x1 + dx,
-				       src_off_y + pbox->y1 + dy + i,
-				       dst_off_x + pbox->x1,
-				       dst_off_y + pbox->y1 + i,
-				       pbox->x2 - pbox->x1, 1);
-	} else {
-	    /*
-	     * xdir = -1, ydir = 1.
-	     * Perform line-by-line xdir = ydir = -1 blits, going down.
-	     */
-	    int i;
-	    if (dirsetup != -1) {
-		if (dirsetup != 0)
-		    pExaScr->info->DoneCopy(pDstPixmap);
-		dirsetup = -1;
-		if (!(*pExaScr->info->PrepareCopy)(pSrcPixmap,
-						   pDstPixmap,
-						   -1, -1,
-						   pGC ? pGC->alu : GXcopy,
-						   pGC ? pGC->planemask :
-							 FB_ALLONES))
-		    return FALSE;
-	    }
-	    for (i = 0; i < pbox->y2 - pbox->y1; i++)
-		(*pExaScr->info->Copy)(pDstPixmap,
-				       src_off_x + pbox->x1 + dx,
-				       src_off_y + pbox->y1 + dy + i,
-				       dst_off_x + pbox->x1,
-				       dst_off_y + pbox->y1 + i,
-				       pbox->x2 - pbox->x1, 1);
-	}
-    }
-    if (dirsetup != 0)
-	pExaScr->info->DoneCopy(pDstPixmap);
-    exaMarkSync(pDstDrawable->pScreen);
-    return TRUE;
-}
-
-Bool
-exaHWCopyNtoN (DrawablePtr    pSrcDrawable,
-	     DrawablePtr    pDstDrawable,
-	     GCPtr	    pGC,
-	     BoxPtr	    pbox,
-	     int	    nbox,
-	     int	    dx,
-	     int	    dy,
-	     Bool	    reverse,
-	     Bool	    upsidedown)
-{
-    ExaScreenPriv (pDstDrawable->pScreen);
-    PixmapPtr pSrcPixmap, pDstPixmap;
-    ExaPixmapPrivPtr pSrcExaPixmap, pDstExaPixmap;
-    int	    src_off_x, src_off_y;
-    int	    dst_off_x, dst_off_y;
-    RegionPtr srcregion = NULL, dstregion = NULL;
-    xRectangle *rects;
-    Bool ret = TRUE;
-
-    /* avoid doing copy operations if no boxes */
-    if (nbox == 0)
-	return TRUE;
-
-    pSrcPixmap = exaGetDrawablePixmap (pSrcDrawable);
-    pDstPixmap = exaGetDrawablePixmap (pDstDrawable);
-
-    exaGetDrawableDeltas (pSrcDrawable, pSrcPixmap, &src_off_x, &src_off_y);
-    exaGetDrawableDeltas (pDstDrawable, pDstPixmap, &dst_off_x, &dst_off_y);
-
-    rects = xalloc(nbox * sizeof(xRectangle));
-
-    if (rects) {
-	int i;
-	int ordering;
-
-	for (i = 0; i < nbox; i++) {
-	    rects[i].x = pbox[i].x1 + dx + src_off_x;
-	    rects[i].y = pbox[i].y1 + dy + src_off_y;
-	    rects[i].width = pbox[i].x2 - pbox[i].x1;
-	    rects[i].height = pbox[i].y2 - pbox[i].y1;
-	}
-
-	/* This must match the miRegionCopy() logic for reversing rect order */
-	if (nbox == 1 || (dx > 0 && dy > 0) ||
-	    (pDstDrawable != pSrcDrawable &&
-	     (pDstDrawable->type != DRAWABLE_WINDOW ||
-	      pSrcDrawable->type != DRAWABLE_WINDOW)))
-	    ordering = CT_YXBANDED;
-	else
-	    ordering = CT_UNSORTED;
-
-	srcregion  = RECTS_TO_REGION(pScreen, nbox, rects, ordering);
-	xfree(rects);
-
-	if (!pGC || !exaGCReadsDestination(pDstDrawable, pGC->planemask,
-					   pGC->fillStyle, pGC->alu,
-					   pGC->clientClipType)) {
-	    dstregion = REGION_CREATE(pScreen, NullBox, 0);
-	    REGION_COPY(pScreen, dstregion, srcregion);
-	    REGION_TRANSLATE(pScreen, dstregion, dst_off_x - dx - src_off_x,
-			     dst_off_y - dy - src_off_y);
-	}
-    }
-
-
-    pSrcExaPixmap = ExaGetPixmapPriv (pSrcPixmap);
-    pDstExaPixmap = ExaGetPixmapPriv (pDstPixmap);
-
-    /* Check whether the accelerator can use this pixmap.
-     * If the pitch of the pixmaps is out of range, there's nothing
-     * we can do but fall back to software rendering.
-     */
-    if (pSrcExaPixmap->accel_blocked & EXA_RANGE_PITCH ||
-        pDstExaPixmap->accel_blocked & EXA_RANGE_PITCH)
-	goto fallback;
-
-    /* If the width or the height of either of the pixmaps
-     * is out of range, check whether the boxes are actually out of the
-     * addressable range as well. If they aren't, we can still do
-     * the copying in hardware.
-     */
-    if (pSrcExaPixmap->accel_blocked || pDstExaPixmap->accel_blocked) {
-        int i;
-
-        for (i = 0; i < nbox; i++) {
-            /* src */
-            if ((pbox[i].x2 + dx + src_off_x) >= pExaScr->info->maxX ||
-                (pbox[i].y2 + dy + src_off_y) >= pExaScr->info->maxY)
-                goto fallback;
-
-            /* dst */
-            if ((pbox[i].x2 + dst_off_x) >= pExaScr->info->maxX ||
-                (pbox[i].y2 + dst_off_y) >= pExaScr->info->maxY)
-                goto fallback;
-        }
-    }
-
-    if (pExaScr->do_migration) {
-	ExaMigrationRec pixmaps[2];
-
-	pixmaps[0].as_dst = TRUE;
-	pixmaps[0].as_src = FALSE;
-	pixmaps[0].pPix = pDstPixmap;
-	pixmaps[0].pReg = dstregion;
-	pixmaps[1].as_dst = FALSE;
-	pixmaps[1].as_src = TRUE;
-	pixmaps[1].pPix = pSrcPixmap;
-	pixmaps[1].pReg = srcregion;
-
-	exaDoMigration (pixmaps, 2, TRUE);
-    }
-
-    /* Mixed directions must be handled specially if the card is lame */
-    if ((pExaScr->info->flags & EXA_TWO_BITBLT_DIRECTIONS) &&
-	reverse != upsidedown) {
-	if (exaCopyNtoNTwoDir(pSrcDrawable, pDstDrawable, pGC, pbox, nbox,
-			       dx, dy))
-	    goto out;
-	goto fallback;
-    }
-
-    if (exaPixmapIsOffscreen(pDstPixmap)) {
-	/* Normal blitting. */
-	if (exaPixmapIsOffscreen(pSrcPixmap)) {
-	    if (!(*pExaScr->info->PrepareCopy) (pSrcPixmap, pDstPixmap, reverse ? -1 : 1,
-						upsidedown ? -1 : 1,
-						pGC ? pGC->alu : GXcopy,
-						pGC ? pGC->planemask : FB_ALLONES)) {
-		goto fallback;
-	    }
-
-	    while (nbox--)
-	    {
-		(*pExaScr->info->Copy) (pDstPixmap,
-					pbox->x1 + dx + src_off_x,
-					pbox->y1 + dy + src_off_y,
-					pbox->x1 + dst_off_x, pbox->y1 + dst_off_y,
-					pbox->x2 - pbox->x1, pbox->y2 - pbox->y1);
-		pbox++;
-	    }
-
-	    (*pExaScr->info->DoneCopy) (pDstPixmap);
-	    exaMarkSync (pDstDrawable->pScreen);
-	/* UTS: mainly for SHM PutImage's secondary path. */
-	} else {
-	    int bpp = pSrcDrawable->bitsPerPixel;
-	    int src_stride = exaGetPixmapPitch(pSrcPixmap);
-	    CARD8 *src = NULL;
-
-	    if (!pExaScr->info->UploadToScreen)
-		goto fallback;
-
-	    if (pSrcDrawable->bitsPerPixel != pDstDrawable->bitsPerPixel)
-		goto fallback;
-
-	    if (pSrcDrawable->bitsPerPixel < 8)
-		goto fallback;
-
-	    if (pGC && !(pGC->alu == GXcopy && EXA_PM_IS_SOLID(pSrcDrawable,  pGC->planemask)))
-		goto fallback;
-
-	    while (nbox--)
-	    {
-		src = pSrcExaPixmap->sys_ptr + (pbox->y1 + dy + src_off_y) * src_stride + (pbox->x1 + dx + src_off_x) * (bpp / 8);
-		if (!pExaScr->info->UploadToScreen(pDstPixmap, pbox->x1 + dst_off_x,
-				pbox->y1 + dst_off_y, pbox->x2 - pbox->x1, pbox->y2 - pbox->y1,
-				(char *) src, src_stride))
-		    goto fallback;
-
-		pbox++;
-	    }
-	}
-    } else
-	goto fallback;
-
-    goto out;
-
-fallback:
-    ret = FALSE;
-
-out:
-    if (dstregion) {
-	REGION_UNINIT(pScreen, dstregion);
-	REGION_DESTROY(pScreen, dstregion);
-    }
-    if (srcregion) {
-	REGION_UNINIT(pScreen, srcregion);
-	REGION_DESTROY(pScreen, srcregion);
-    }
-
-    return ret;
-}
-
-void
-exaCopyNtoN (DrawablePtr    pSrcDrawable,
-	     DrawablePtr    pDstDrawable,
-	     GCPtr	    pGC,
-	     BoxPtr	    pbox,
-	     int	    nbox,
-	     int	    dx,
-	     int	    dy,
-	     Bool	    reverse,
-	     Bool	    upsidedown,
-	     Pixel	    bitplane,
-	     void	    *closure)
-{
-    ExaScreenPriv(pDstDrawable->pScreen);
-
-    if (pExaScr->fallback_flags & EXA_FALLBACK_COPYWINDOW)
-	return;
-
-    if (exaHWCopyNtoN(pSrcDrawable, pDstDrawable, pGC, pbox, nbox, dx, dy, reverse, upsidedown))
-	return;
-
-    /* This is a CopyWindow, it's cleaner to fallback at the original call. */
-    if (pExaScr->fallback_flags & EXA_ACCEL_COPYWINDOW) {
-	pExaScr->fallback_flags |= EXA_FALLBACK_COPYWINDOW;
-	return;
-    }
-
-    /* fallback */
-    ExaCheckCopyNtoN(pSrcDrawable, pDstDrawable, pGC, pbox, nbox, dx, dy, reverse, upsidedown, bitplane, closure);
-}
-
-RegionPtr
-exaCopyArea(DrawablePtr pSrcDrawable, DrawablePtr pDstDrawable, GCPtr pGC,
-	    int srcx, int srcy, int width, int height, int dstx, int dsty)
-{
-    ExaScreenPriv (pDstDrawable->pScreen);
-
-    if (pExaScr->swappedOut) {
-        return  ExaCheckCopyArea(pSrcDrawable, pDstDrawable, pGC,
-                                 srcx, srcy, width, height, dstx, dsty);
-    }
-
-    return  miDoCopy (pSrcDrawable, pDstDrawable, pGC,
-                      srcx, srcy, width, height,
-                      dstx, dsty, exaCopyNtoN, 0, NULL);
-}
-
-static void
-exaPolyPoint(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt,
-	     DDXPointPtr ppt)
-{
-    int i;
-    xRectangle *prect;
-
-    /* If we can't reuse the current GC as is, don't bother accelerating the
-     * points.
-     */
-    if (pGC->fillStyle != FillSolid) {
-	ExaCheckPolyPoint(pDrawable, pGC, mode, npt, ppt);
-	return;
-    }
-
-    prect = xalloc(sizeof(xRectangle) * npt);
-    for (i = 0; i < npt; i++) {
-	prect[i].x = ppt[i].x;
-	prect[i].y = ppt[i].y;
-	if (i > 0 && mode == CoordModePrevious) {
-	    prect[i].x += prect[i - 1].x;
-	    prect[i].y += prect[i - 1].y;
-	}
-	prect[i].width = 1;
-	prect[i].height = 1;
-    }
-    pGC->ops->PolyFillRect(pDrawable, pGC, npt, prect);
-    xfree(prect);
-}
-
-/**
- * exaPolylines() checks if it can accelerate the lines as a group of
- * horizontal or vertical lines (rectangles), and uses existing rectangle fill
- * acceleration if so.
- */
-static void
-exaPolylines(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt,
-	     DDXPointPtr ppt)
-{
-    xRectangle *prect;
-    int x1, x2, y1, y2;
-    int i;
-
-    /* Don't try to do wide lines or non-solid fill style. */
-    if (pGC->lineWidth != 0 || pGC->lineStyle != LineSolid ||
-	pGC->fillStyle != FillSolid) {
-	ExaCheckPolylines(pDrawable, pGC, mode, npt, ppt);
-	return;
-    }
-
-    prect = xalloc(sizeof(xRectangle) * (npt - 1));
-    x1 = ppt[0].x;
-    y1 = ppt[0].y;
-    /* If we have any non-horizontal/vertical, fall back. */
-    for (i = 0; i < npt - 1; i++) {
-	if (mode == CoordModePrevious) {
-	    x2 = x1 + ppt[i + 1].x;
-	    y2 = y1 + ppt[i + 1].y;
-	} else {
-	    x2 = ppt[i + 1].x;
-	    y2 = ppt[i + 1].y;
-	}
-
-	if (x1 != x2 && y1 != y2) {
-	    xfree(prect);
-	    ExaCheckPolylines(pDrawable, pGC, mode, npt, ppt);
-	    return;
-	}
-
-	if (x1 < x2) {
-	    prect[i].x = x1;
-	    prect[i].width = x2 - x1 + 1;
-	} else {
-	    prect[i].x = x2;
-	    prect[i].width = x1 - x2 + 1;
-	}
-	if (y1 < y2) {
-	    prect[i].y = y1;
-	    prect[i].height = y2 - y1 + 1;
-	} else {
-	    prect[i].y = y2;
-	    prect[i].height = y1 - y2 + 1;
-	}
-
-	x1 = x2;
-	y1 = y2;
-    }
-    pGC->ops->PolyFillRect(pDrawable, pGC, npt - 1, prect);
-    xfree(prect);
-}
-
-/**
- * exaPolySegment() checks if it can accelerate the lines as a group of
- * horizontal or vertical lines (rectangles), and uses existing rectangle fill
- * acceleration if so.
- */
-static void
-exaPolySegment (DrawablePtr pDrawable, GCPtr pGC, int nseg,
-		xSegment *pSeg)
-{
-    xRectangle *prect;
-    int i;
-
-    /* Don't try to do wide lines or non-solid fill style. */
-    if (pGC->lineWidth != 0 || pGC->lineStyle != LineSolid ||
-	pGC->fillStyle != FillSolid)
-    {
-	ExaCheckPolySegment(pDrawable, pGC, nseg, pSeg);
-	return;
-    }
-
-    /* If we have any non-horizontal/vertical, fall back. */
-    for (i = 0; i < nseg; i++) {
-	if (pSeg[i].x1 != pSeg[i].x2 && pSeg[i].y1 != pSeg[i].y2) {
-	    ExaCheckPolySegment(pDrawable, pGC, nseg, pSeg);
-	    return;
-	}
-    }
-
-    prect = xalloc(sizeof(xRectangle) * nseg);
-    for (i = 0; i < nseg; i++) {
-	if (pSeg[i].x1 < pSeg[i].x2) {
-	    prect[i].x = pSeg[i].x1;
-	    prect[i].width = pSeg[i].x2 - pSeg[i].x1 + 1;
-	} else {
-	    prect[i].x = pSeg[i].x2;
-	    prect[i].width = pSeg[i].x1 - pSeg[i].x2 + 1;
-	}
-	if (pSeg[i].y1 < pSeg[i].y2) {
-	    prect[i].y = pSeg[i].y1;
-	    prect[i].height = pSeg[i].y2 - pSeg[i].y1 + 1;
-	} else {
-	    prect[i].y = pSeg[i].y2;
-	    prect[i].height = pSeg[i].y1 - pSeg[i].y2 + 1;
-	}
-
-	/* don't paint last pixel */
-	if (pGC->capStyle == CapNotLast) {
-	    if (prect[i].width == 1)
-		prect[i].height--;
-	    else
-		prect[i].width--;
-	}
-    }
-    pGC->ops->PolyFillRect(pDrawable, pGC, nseg, prect);
-    xfree(prect);
-}
-
-static Bool exaFillRegionSolid (DrawablePtr pDrawable, RegionPtr pRegion,
-				Pixel pixel, CARD32 planemask, CARD32 alu,
-				unsigned int clientClipType);
-
-static void
-exaPolyFillRect(DrawablePtr pDrawable,
-		GCPtr	    pGC,
-		int	    nrect,
-		xRectangle  *prect)
-{
-    ExaScreenPriv (pDrawable->pScreen);
-    RegionPtr	    pClip = fbGetCompositeClip(pGC);
-    PixmapPtr	    pPixmap = exaGetDrawablePixmap(pDrawable);
-    ExaPixmapPriv (pPixmap);
-    register BoxPtr pbox;
-    BoxPtr	    pextent;
-    int		    extentX1, extentX2, extentY1, extentY2;
-    int		    fullX1, fullX2, fullY1, fullY2;
-    int		    partX1, partX2, partY1, partY2;
-    int		    xoff, yoff;
-    int		    xorg, yorg;
-    int		    n;
-    RegionPtr pReg = RECTS_TO_REGION(pScreen, nrect, prect, CT_UNSORTED);
-
-    /* Compute intersection of rects and clip region */
-    REGION_TRANSLATE(pScreen, pReg, pDrawable->x, pDrawable->y);
-    REGION_INTERSECT(pScreen, pReg, pClip, pReg);
-
-    if (!REGION_NUM_RECTS(pReg)) {
-	goto out;
-    }
-
-    exaGetDrawableDeltas(pDrawable, pPixmap, &xoff, &yoff);
-
-    if (pExaScr->swappedOut || pExaPixmap->accel_blocked)
-    {
-	goto fallback;
-    }
-
-    /* For ROPs where overlaps don't matter, convert rectangles to region and
-     * call exaFillRegion{Solid,Tiled}.
-     */
-    if ((pGC->fillStyle == FillSolid || pGC->fillStyle == FillTiled) &&
-	(nrect == 1 || pGC->alu == GXcopy || pGC->alu == GXclear ||
-	 pGC->alu == GXnoop || pGC->alu == GXcopyInverted ||
-	 pGC->alu == GXset)) {
-	if (((pGC->fillStyle == FillSolid || pGC->tileIsPixel) &&
-	     exaFillRegionSolid(pDrawable, pReg, pGC->fillStyle == FillSolid ?
-				pGC->fgPixel : pGC->tile.pixel,	pGC->planemask,
-				pGC->alu, pGC->clientClipType)) ||
-	    (pGC->fillStyle == FillTiled && !pGC->tileIsPixel &&
-	     exaFillRegionTiled(pDrawable, pReg, pGC->tile.pixmap, &pGC->patOrg,
-				pGC->planemask, pGC->alu,
-				pGC->clientClipType))) {
-	    goto out;
-	}
-    }
-
-    if (pGC->fillStyle != FillSolid &&
-	!(pGC->tileIsPixel && pGC->fillStyle == FillTiled))
-    {
-	goto fallback;
-    }
-
-    if (pExaScr->do_migration) {
-	ExaMigrationRec pixmaps[1];
-
-	pixmaps[0].as_dst = TRUE;
-	pixmaps[0].as_src = FALSE;
-	pixmaps[0].pPix = pPixmap;
-	pixmaps[0].pReg = NULL;
-
-	exaDoMigration (pixmaps, 1, TRUE);
-    }
-
-    if (!exaPixmapIsOffscreen (pPixmap) ||
-	!(*pExaScr->info->PrepareSolid) (pPixmap,
-					 pGC->alu,
-					 pGC->planemask,
-					 pGC->fgPixel))
-    {
-fallback:
-	ExaCheckPolyFillRect (pDrawable, pGC, nrect, prect);
-	goto out;
-    }
-
-    xorg = pDrawable->x;
-    yorg = pDrawable->y;
-
-    pextent = REGION_EXTENTS(pGC->pScreen, pClip);
-    extentX1 = pextent->x1;
-    extentY1 = pextent->y1;
-    extentX2 = pextent->x2;
-    extentY2 = pextent->y2;
-    while (nrect--)
-    {
-	fullX1 = prect->x + xorg;
-	fullY1 = prect->y + yorg;
-	fullX2 = fullX1 + (int) prect->width;
-	fullY2 = fullY1 + (int) prect->height;
-	prect++;
-
-	if (fullX1 < extentX1)
-	    fullX1 = extentX1;
-
-	if (fullY1 < extentY1)
-	    fullY1 = extentY1;
-
-	if (fullX2 > extentX2)
-	    fullX2 = extentX2;
-
-	if (fullY2 > extentY2)
-	    fullY2 = extentY2;
-
-	if ((fullX1 >= fullX2) || (fullY1 >= fullY2))
-	    continue;
-	n = REGION_NUM_RECTS (pClip);
-	if (n == 1)
-	{
-	    (*pExaScr->info->Solid) (pPixmap,
-				     fullX1 + xoff, fullY1 + yoff,
-				     fullX2 + xoff, fullY2 + yoff);
-	}
-	else
-	{
-	    pbox = REGION_RECTS(pClip);
-	    /*
-	     * clip the rectangle to each box in the clip region
-	     * this is logically equivalent to calling Intersect(),
-	     * but rectangles may overlap each other here.
-	     */
-	    while(n--)
-	    {
-		partX1 = pbox->x1;
-		if (partX1 < fullX1)
-		    partX1 = fullX1;
-		partY1 = pbox->y1;
-		if (partY1 < fullY1)
-		    partY1 = fullY1;
-		partX2 = pbox->x2;
-		if (partX2 > fullX2)
-		    partX2 = fullX2;
-		partY2 = pbox->y2;
-		if (partY2 > fullY2)
-		    partY2 = fullY2;
-
-		pbox++;
-
-		if (partX1 < partX2 && partY1 < partY2) {
-		    (*pExaScr->info->Solid) (pPixmap,
-					     partX1 + xoff, partY1 + yoff,
-					     partX2 + xoff, partY2 + yoff);
-		}
-	    }
-	}
-    }
-    (*pExaScr->info->DoneSolid) (pPixmap);
-    exaMarkSync(pDrawable->pScreen);
-
-out:
-    REGION_UNINIT(pScreen, pReg);
-    REGION_DESTROY(pScreen, pReg);
-}
-
-const GCOps exaOps = {
-    exaFillSpans,
-    ExaCheckSetSpans,
-    exaPutImage,
-    exaCopyArea,
-    ExaCheckCopyPlane,
-    exaPolyPoint,
-    exaPolylines,
-    exaPolySegment,
-    miPolyRectangle,
-    ExaCheckPolyArc,
-    miFillPolygon,
-    exaPolyFillRect,
-    miPolyFillArc,
-    miPolyText8,
-    miPolyText16,
-    miImageText8,
-    miImageText16,
-    ExaCheckImageGlyphBlt,
-    ExaCheckPolyGlyphBlt,
-    ExaCheckPushPixels,
-};
-
-void
-exaCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
-{
-    RegionRec	rgnDst;
-    int		dx, dy;
-    PixmapPtr	pPixmap = (*pWin->drawable.pScreen->GetWindowPixmap) (pWin);
-    ExaScreenPriv(pWin->drawable.pScreen);
-
-    dx = ptOldOrg.x - pWin->drawable.x;
-    dy = ptOldOrg.y - pWin->drawable.y;
-    REGION_TRANSLATE(pWin->drawable.pScreen, prgnSrc, -dx, -dy);
-
-    REGION_INIT (pWin->drawable.pScreen, &rgnDst, NullBox, 0);
-
-    REGION_INTERSECT(pWin->drawable.pScreen, &rgnDst, &pWin->borderClip, prgnSrc);
-#ifdef COMPOSITE
-    if (pPixmap->screen_x || pPixmap->screen_y)
-	REGION_TRANSLATE (pWin->drawable.pScreen, &rgnDst,
-			  -pPixmap->screen_x, -pPixmap->screen_y);
-#endif
-
-    pExaScr->fallback_flags |= EXA_ACCEL_COPYWINDOW;
-    miCopyRegion (&pPixmap->drawable, &pPixmap->drawable,
-		  NULL,
-		  &rgnDst, dx, dy, exaCopyNtoN, 0, NULL);
-    pExaScr->fallback_flags &= ~EXA_ACCEL_COPYWINDOW;
-
-    REGION_UNINIT(pWin->drawable.pScreen, &rgnDst);
-
-    if (pExaScr->fallback_flags & EXA_FALLBACK_COPYWINDOW) {
-	pExaScr->fallback_flags &= ~EXA_FALLBACK_COPYWINDOW;
-	REGION_TRANSLATE(pWin->drawable.pScreen, prgnSrc, dx, dy);
-	ExaCheckCopyWindow(pWin, ptOldOrg, prgnSrc);
-    }
-}
-
-static Bool
-exaFillRegionSolid (DrawablePtr	pDrawable, RegionPtr pRegion, Pixel pixel,
-		    CARD32 planemask, CARD32 alu, unsigned int clientClipType)
-{
-    ExaScreenPriv(pDrawable->pScreen);
-    PixmapPtr pPixmap = exaGetDrawablePixmap (pDrawable);
-    ExaPixmapPriv (pPixmap);
-    int xoff, yoff;
-    Bool ret = FALSE;
-
-    exaGetDrawableDeltas(pDrawable, pPixmap, &xoff, &yoff);
-    REGION_TRANSLATE(pScreen, pRegion, xoff, yoff);
-
-    if (pExaPixmap->accel_blocked)
-	goto out;
-
-    if (pExaScr->do_migration) {
-	ExaMigrationRec pixmaps[1];
-
-	pixmaps[0].as_dst = TRUE;
-	pixmaps[0].as_src = FALSE;
-	pixmaps[0].pPix = pPixmap;
-	pixmaps[0].pReg = exaGCReadsDestination(pDrawable, planemask, FillSolid,
-						alu, clientClipType) ? NULL : pRegion;
-
-	exaDoMigration (pixmaps, 1, TRUE);
-    }
-
-    if (exaPixmapIsOffscreen (pPixmap) &&
-	(*pExaScr->info->PrepareSolid) (pPixmap, alu, planemask, pixel))
-    {
-	int nbox;
-	BoxPtr pBox;
-
-	nbox = REGION_NUM_RECTS (pRegion);
-	pBox = REGION_RECTS (pRegion);
-
-	while (nbox--)
-	{
-	    (*pExaScr->info->Solid) (pPixmap, pBox->x1, pBox->y1, pBox->x2,
-				     pBox->y2);
-	    pBox++;
-	}
-	(*pExaScr->info->DoneSolid) (pPixmap);
-	exaMarkSync(pDrawable->pScreen);
-
-	if (pExaPixmap->pDamage &&
-	    pDrawable->width == 1 && pDrawable->height == 1 &&
-	    pDrawable->bitsPerPixel != 24) {
-	    ExaPixmapPriv(pPixmap);
-
-	    switch (pDrawable->bitsPerPixel) {
-	    case 32:
-		*(CARD32*)pExaPixmap->sys_ptr = pixel;
-		break;
-	    case 16:
-		*(CARD16*)pExaPixmap->sys_ptr = pixel;
-		break;
-	    case 8:
-		*(CARD8*)pExaPixmap->sys_ptr = pixel;
-	    }
-
-	    REGION_UNION(pScreen, &pExaPixmap->validSys, &pExaPixmap->validSys,
-			 pRegion);
-	}
-
-	ret = TRUE;
-    }
-
-out:
-    REGION_TRANSLATE(pScreen, pRegion, -xoff, -yoff);
-
-    return ret;
-}
-
-/* Try to do an accelerated tile of the pTile into pRegion of pDrawable.
- * Based on fbFillRegionTiled(), fbTile().
- */
-Bool
-exaFillRegionTiled (DrawablePtr pDrawable, RegionPtr pRegion, PixmapPtr pTile,
-		    DDXPointPtr pPatOrg, CARD32 planemask, CARD32 alu,
-		    unsigned int clientClipType)
-{
-    ExaScreenPriv(pDrawable->pScreen);
-    PixmapPtr pPixmap;
-    ExaPixmapPrivPtr pExaPixmap;
-    ExaPixmapPrivPtr pTileExaPixmap = ExaGetPixmapPriv(pTile);
-    int xoff, yoff;
-    int tileWidth, tileHeight;
-    int nbox = REGION_NUM_RECTS (pRegion);
-    BoxPtr pBox = REGION_RECTS (pRegion);
-    Bool ret = FALSE;
-    int i;
-
-    tileWidth = pTile->drawable.width;
-    tileHeight = pTile->drawable.height;
-
-    /* If we're filling with a solid color, grab it out and go to
-     * FillRegionSolid, saving numerous copies.
-     */
-    if (tileWidth == 1 && tileHeight == 1)
-	return exaFillRegionSolid(pDrawable, pRegion,
-				  exaGetPixmapFirstPixel (pTile), planemask,
-				  alu, clientClipType);
-
-    pPixmap = exaGetDrawablePixmap (pDrawable);
-    pExaPixmap = ExaGetPixmapPriv (pPixmap);
-
-    if (pExaPixmap->accel_blocked || pTileExaPixmap->accel_blocked)
-	return FALSE;
-
-    if (pExaScr->do_migration) {
-	ExaMigrationRec pixmaps[2];
-
-	pixmaps[0].as_dst = TRUE;
-	pixmaps[0].as_src = FALSE;
-	pixmaps[0].pPix = pPixmap;
-	pixmaps[0].pReg = exaGCReadsDestination(pDrawable, planemask, FillTiled,
-						alu, clientClipType) ? NULL : pRegion;
-	pixmaps[1].as_dst = FALSE;
-	pixmaps[1].as_src = TRUE;
-	pixmaps[1].pPix = pTile;
-	pixmaps[1].pReg = NULL;
-
-	exaDoMigration (pixmaps, 2, TRUE);
-    }
-
-    pPixmap = exaGetOffscreenPixmap (pDrawable, &xoff, &yoff);
-
-    if (!pPixmap || !exaPixmapIsOffscreen(pTile))
-	return FALSE;
-
-    if ((*pExaScr->info->PrepareCopy) (pTile, pPixmap, 1, 1, alu, planemask))
-    {
-	if (xoff || yoff)
-	    REGION_TRANSLATE(pScreen, pRegion, xoff, yoff);
-
-	for (i = 0; i < nbox; i++)
-	{
-	    int height = pBox[i].y2 - pBox[i].y1;
-	    int dstY = pBox[i].y1;
-	    int tileY;
-
-	    if (alu == GXcopy)
-		height = min(height, tileHeight);
-
-	    modulus(dstY - yoff - pDrawable->y - pPatOrg->y, tileHeight, tileY);
-
-	    while (height > 0) {
-		int width = pBox[i].x2 - pBox[i].x1;
-		int dstX = pBox[i].x1;
-		int tileX;
-		int h = tileHeight - tileY;
-
-		if (alu == GXcopy)
-		    width = min(width, tileWidth);
-
-		if (h > height)
-		    h = height;
-		height -= h;
-
-		modulus(dstX - xoff - pDrawable->x - pPatOrg->x, tileWidth,
-			tileX);
-
-		while (width > 0) {
-		    int w = tileWidth - tileX;
-		    if (w > width)
-			w = width;
-		    width -= w;
-
-		    (*pExaScr->info->Copy) (pPixmap, tileX, tileY, dstX, dstY,
-					    w, h);
-		    dstX += w;
-		    tileX = 0;
-		}
-		dstY += h;
-		tileY = 0;
-	    }
-	}
-	(*pExaScr->info->DoneCopy) (pPixmap);
-
-	/* With GXcopy, we only need to do the basic algorithm up to the tile
-	 * size; then, we can just keep doubling the destination in each
-	 * direction until it fills the box. This way, the number of copy
-	 * operations is O(log(rx)) + O(log(ry)) instead of O(rx * ry), where
-	 * rx/ry is the ratio between box and tile width/height. This can make
-	 * a big difference if each driver copy incurs a significant constant
-	 * overhead.
-	 */
-	if (alu != GXcopy)
-	    ret = TRUE;
-	else {
-	    Bool more_copy = FALSE;
-
-	    for (i = 0; i < nbox; i++) {
-		int dstX = pBox[i].x1 + tileWidth;
-		int dstY = pBox[i].y1 + tileHeight;
-
-		if ((dstX < pBox[i].x2) || (dstY < pBox[i].y2)) {
-		    more_copy = TRUE;
-		    break;
-		}
-	    }
-
-	    if (more_copy == FALSE)
-		ret = TRUE;
-
-	    if (more_copy && (*pExaScr->info->PrepareCopy) (pPixmap, pPixmap,
-							    1, 1, alu, planemask)) {
-		for (i = 0; i < nbox; i++)
-		{
-		    int dstX = pBox[i].x1 + tileWidth;
-		    int dstY = pBox[i].y1 + tileHeight;
-		    int width = min(pBox[i].x2 - dstX, tileWidth);
-		    int height = min(pBox[i].y2 - pBox[i].y1, tileHeight);
-
-		    while (dstX < pBox[i].x2) {
-			(*pExaScr->info->Copy) (pPixmap, pBox[i].x1, pBox[i].y1,
-						dstX, pBox[i].y1, width, height);
-			dstX += width;
-			width = min(pBox[i].x2 - dstX, width * 2);
-		    }
-
-		    width = pBox[i].x2 - pBox[i].x1;
-		    height = min(pBox[i].y2 - dstY, tileHeight);
-
-		    while (dstY < pBox[i].y2) {
-			(*pExaScr->info->Copy) (pPixmap, pBox[i].x1, pBox[i].y1,
-						pBox[i].x1, dstY, width, height);
-			dstY += height;
-			height = min(pBox[i].y2 - dstY, height * 2);
-		    }
-		}
-
-		(*pExaScr->info->DoneCopy) (pPixmap);
-
-		ret = TRUE;
-	    }
-	}
-
-	exaMarkSync(pDrawable->pScreen);
-
-	if (xoff || yoff)
-	    REGION_TRANSLATE(pScreen, pRegion, -xoff, -yoff);
-    }
-
-    return ret;
-}
-
-
-/**
- * Accelerates GetImage for solid ZPixmap downloads from framebuffer memory.
- *
- * This is probably the only case we actually care about.  The rest fall through
- * to migration and fbGetImage, which hopefully will result in migration pushing
- * the pixmap out of framebuffer.
- */
-void
-exaGetImage (DrawablePtr pDrawable, int x, int y, int w, int h,
-	     unsigned int format, unsigned long planeMask, char *d)
-{
-    ExaScreenPriv (pDrawable->pScreen);
-    PixmapPtr pPix = exaGetDrawablePixmap (pDrawable);
-    int xoff, yoff;
-    Bool ok;
-
-    if (pExaScr->swappedOut)
-	goto fallback;
-
-    exaGetDrawableDeltas (pDrawable, pPix, &xoff, &yoff);
-
-    if (pExaScr->do_migration) {
-	BoxRec Box;
-	RegionRec Reg;
-	ExaMigrationRec pixmaps[1];
-
-	Box.x1 = pDrawable->y + x + xoff;
-	Box.y1 = pDrawable->y + y + yoff;
-	Box.x2 = Box.x1 + w;
-	Box.y2 = Box.y1 + h;
-
-	REGION_INIT(pScreen, &Reg, &Box, 1);
-
-	pixmaps[0].as_dst = FALSE;
-	pixmaps[0].as_src = TRUE;
-	pixmaps[0].pPix = pPix;
-	pixmaps[0].pReg = &Reg;
-
-	exaDoMigration(pixmaps, 1, FALSE);
-
-	REGION_UNINIT(pScreen, &Reg);
-    }
-
-    pPix = exaGetOffscreenPixmap (pDrawable, &xoff, &yoff);
-
-    if (pPix == NULL || pExaScr->info->DownloadFromScreen == NULL)
-	goto fallback;
-
-    /* Only cover the ZPixmap, solid copy case. */
-    if (format != ZPixmap || !EXA_PM_IS_SOLID(pDrawable, planeMask))
-	goto fallback;
-
-    /* Only try to handle the 8bpp and up cases, since we don't want to think
-     * about <8bpp.
-     */
-    if (pDrawable->bitsPerPixel < 8)
-	goto fallback;
-
-    ok = pExaScr->info->DownloadFromScreen(pPix, pDrawable->x + x + xoff,
-					   pDrawable->y + y + yoff, w, h, d,
-					   PixmapBytePad(w, pDrawable->depth));
-    if (ok) {
-	exaWaitSync(pDrawable->pScreen);
-	return;
-    }
-
-fallback:
-    ExaCheckGetImage(pDrawable, x, y, w, h, format, planeMask, d);
-}
+/*

+ * Copyright © 2001 Keith Packard

+ *

+ * Partly based on code that is Copyright © The XFree86 Project Inc.

+ *

+ * 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, and that the name of Keith Packard not be used in

+ * advertising or publicity pertaining to distribution of the software without

+ * specific, written prior permission.  Keith Packard makes no

+ * representations about the suitability of this software for any purpose.  It

+ * is provided "as is" without express or implied warranty.

+ *

+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO

+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR

+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,

+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER

+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR

+ * PERFORMANCE OF THIS SOFTWARE.

+ *

+ * Authors:

+ *    Eric Anholt <eric@anholt.net>

+ *    Michel Dänzer <michel@tungstengraphics.com>

+ *

+ */

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+#include "exa_priv.h"

+#include <X11/fonts/fontstruct.h>

+#include "dixfontstr.h"

+#include "exa.h"

+

+static void

+exaFillSpans(DrawablePtr pDrawable, GCPtr pGC, int n,

+	     DDXPointPtr ppt, int *pwidth, int fSorted)

+{

+    ScreenPtr	    pScreen = pDrawable->pScreen;

+    ExaScreenPriv (pScreen);

+    RegionPtr	    pClip = fbGetCompositeClip(pGC);

+    PixmapPtr	    pPixmap = exaGetDrawablePixmap (pDrawable);

+    ExaPixmapPriv (pPixmap);

+    BoxPtr	    pextent, pbox;

+    int		    nbox;

+    int		    extentX1, extentX2, extentY1, extentY2;

+    int		    fullX1, fullX2, fullY1;

+    int		    partX1, partX2;

+    int		    off_x, off_y;

+

+    if (pExaScr->swappedOut ||

+	pGC->fillStyle != FillSolid ||

+	pExaPixmap->accel_blocked)

+    {

+	ExaCheckFillSpans (pDrawable, pGC, n, ppt, pwidth, fSorted);

+	return;

+    }

+

+    if (pExaScr->do_migration) {

+	ExaMigrationRec pixmaps[1];

+

+	pixmaps[0].as_dst = TRUE;

+	pixmaps[0].as_src = FALSE;

+	pixmaps[0].pPix = pPixmap;

+	pixmaps[0].pReg = NULL;

+

+	exaDoMigration (pixmaps, 1, TRUE);

+    }

+

+    if (!(pPixmap = exaGetOffscreenPixmap (pDrawable, &off_x, &off_y)) ||

+	!(*pExaScr->info->PrepareSolid) (pPixmap,

+					 pGC->alu,

+					 pGC->planemask,

+					 pGC->fgPixel))

+    {

+	ExaCheckFillSpans (pDrawable, pGC, n, ppt, pwidth, fSorted);

+	return;

+    }

+

+    pextent = REGION_EXTENTS(pGC->pScreen, pClip);

+    extentX1 = pextent->x1;

+    extentY1 = pextent->y1;

+    extentX2 = pextent->x2;

+    extentY2 = pextent->y2;

+    while (n--)

+    {

+	fullX1 = ppt->x;

+	fullY1 = ppt->y;

+	fullX2 = fullX1 + (int) *pwidth;

+	ppt++;

+	pwidth++;

+

+	if (fullY1 < extentY1 || extentY2 <= fullY1)

+	    continue;

+

+	if (fullX1 < extentX1)

+	    fullX1 = extentX1;

+

+	if (fullX2 > extentX2)

+	    fullX2 = extentX2;

+

+	if (fullX1 >= fullX2)

+	    continue;

+

+	nbox = REGION_NUM_RECTS (pClip);

+	if (nbox == 1)

+	{

+	    (*pExaScr->info->Solid) (pPixmap,

+				     fullX1 + off_x, fullY1 + off_y,

+				     fullX2 + off_x, fullY1 + 1 + off_y);

+	}

+	else

+	{

+	    pbox = REGION_RECTS(pClip);

+	    while(nbox--)

+	    {

+		if (pbox->y1 <= fullY1 && fullY1 < pbox->y2)

+		{

+		    partX1 = pbox->x1;

+		    if (partX1 < fullX1)

+			partX1 = fullX1;

+		    partX2 = pbox->x2;

+		    if (partX2 > fullX2)

+			partX2 = fullX2;

+		    if (partX2 > partX1) {

+			(*pExaScr->info->Solid) (pPixmap,

+						 partX1 + off_x, fullY1 + off_y,

+						 partX2 + off_x, fullY1 + 1 + off_y);

+		    }

+		}

+		pbox++;

+	    }

+	}

+    }

+    (*pExaScr->info->DoneSolid) (pPixmap);

+    exaMarkSync(pScreen);

+}

+

+static Bool

+exaDoPutImage (DrawablePtr pDrawable, GCPtr pGC, int depth, int x, int y,

+	       int w, int h, int format, char *bits, int src_stride)

+{

+    ExaScreenPriv (pDrawable->pScreen);

+    PixmapPtr pPix = exaGetDrawablePixmap (pDrawable);

+    ExaPixmapPriv(pPix);

+    RegionPtr pClip;

+    BoxPtr pbox;

+    int nbox;

+    int xoff, yoff;

+    int bpp = pDrawable->bitsPerPixel;

+    Bool ret = TRUE;

+

+    if (pExaPixmap->accel_blocked || !pExaScr->info->UploadToScreen)

+	return FALSE;

+

+    /* Don't bother with under 8bpp, XYPixmaps. */

+    if (format != ZPixmap || bpp < 8)

+	return FALSE;

+

+    /* Only accelerate copies: no rop or planemask. */

+    if (!EXA_PM_IS_SOLID(pDrawable, pGC->planemask) || pGC->alu != GXcopy)

+	return FALSE;

+

+    if (pExaScr->swappedOut)

+	return FALSE;

+

+    if (pExaScr->do_migration) {

+	ExaMigrationRec pixmaps[1];

+

+	pixmaps[0].as_dst = TRUE;

+	pixmaps[0].as_src = FALSE;

+	pixmaps[0].pPix = pPix;

+	pixmaps[0].pReg = DamagePendingRegion(pExaPixmap->pDamage);

+

+	exaDoMigration (pixmaps, 1, TRUE);

+    }

+

+    pPix = exaGetOffscreenPixmap (pDrawable, &xoff, &yoff);

+

+    if (!pPix)

+	return FALSE;

+

+    x += pDrawable->x;

+    y += pDrawable->y;

+

+    pClip = fbGetCompositeClip(pGC);

+    for (nbox = REGION_NUM_RECTS(pClip),

+	 pbox = REGION_RECTS(pClip);

+	 nbox--;

+	 pbox++)

+    {

+	int x1 = x;

+	int y1 = y;

+	int x2 = x + w;

+	int y2 = y + h;

+	char *src;

+	Bool ok;

+

+	if (x1 < pbox->x1)

+	    x1 = pbox->x1;

+	if (y1 < pbox->y1)

+	    y1 = pbox->y1;

+	if (x2 > pbox->x2)

+	    x2 = pbox->x2;

+	if (y2 > pbox->y2)

+	    y2 = pbox->y2;

+	if (x1 >= x2 || y1 >= y2)

+	    continue;

+

+	src = bits + (y1 - y) * src_stride + (x1 - x) * (bpp / 8);

+	ok = pExaScr->info->UploadToScreen(pPix, x1 + xoff, y1 + yoff,

+					   x2 - x1, y2 - y1, src, src_stride);

+	/* We have to fall back completely, and ignore what has already been completed.

+	 * Messing with the fb layer directly like we used to is completely unacceptable.

+	 */

+	if (!ok) {

+	    ret = FALSE;

+	    break;

+	}

+    }

+

+    if (ret)

+	exaMarkSync(pDrawable->pScreen);

+

+    return ret;

+}

+

+static void

+exaPutImage (DrawablePtr pDrawable, GCPtr pGC, int depth, int x, int y,

+	     int w, int h, int leftPad, int format, char *bits)

+{

+    if (!exaDoPutImage(pDrawable, pGC, depth, x, y, w, h, format, bits,

+		       PixmapBytePad(w, pDrawable->depth)))

+	ExaCheckPutImage(pDrawable, pGC, depth, x, y, w, h, leftPad, format,

+			 bits);

+}

+

+static Bool __inline

+exaCopyNtoNTwoDir (DrawablePtr pSrcDrawable, DrawablePtr pDstDrawable,

+		   GCPtr pGC, BoxPtr pbox, int nbox, int dx, int dy)

+{

+    ExaScreenPriv (pDstDrawable->pScreen);

+    PixmapPtr pSrcPixmap, pDstPixmap;

+    int src_off_x, src_off_y, dst_off_x, dst_off_y;

+    int dirsetup;

+

+    /* Need to get both pixmaps to call the driver routines */

+    pSrcPixmap = exaGetOffscreenPixmap (pSrcDrawable, &src_off_x, &src_off_y);

+    pDstPixmap = exaGetOffscreenPixmap (pDstDrawable, &dst_off_x, &dst_off_y);

+    if (!pSrcPixmap || !pDstPixmap)

+	return FALSE;

+

+    /*

+     * Now the case of a chip that only supports xdir = ydir = 1 or

+     * xdir = ydir = -1, but we have xdir != ydir.

+     */

+    dirsetup = 0;	/* No direction set up yet. */

+    for (; nbox; pbox++, nbox--) {

+	if (dx >= 0 && (src_off_y + pbox->y1 + dy) != pbox->y1) {

+	    /* Do a xdir = ydir = -1 blit instead. */

+	    if (dirsetup != -1) {

+		if (dirsetup != 0)

+		    pExaScr->info->DoneCopy(pDstPixmap);

+		dirsetup = -1;

+		if (!(*pExaScr->info->PrepareCopy)(pSrcPixmap,

+						   pDstPixmap,

+						   -1, -1,

+						   pGC ? pGC->alu : GXcopy,

+						   pGC ? pGC->planemask :

+							 FB_ALLONES))

+		    return FALSE;

+	    }

+	    (*pExaScr->info->Copy)(pDstPixmap,

+				   src_off_x + pbox->x1 + dx,

+				   src_off_y + pbox->y1 + dy,

+				   dst_off_x + pbox->x1,

+				   dst_off_y + pbox->y1,

+				   pbox->x2 - pbox->x1,

+				   pbox->y2 - pbox->y1);

+	} else if (dx < 0 && (src_off_y + pbox->y1 + dy) != pbox->y1) {

+	    /* Do a xdir = ydir = 1 blit instead. */

+	    if (dirsetup != 1) {

+		if (dirsetup != 0)

+		    pExaScr->info->DoneCopy(pDstPixmap);

+		dirsetup = 1;

+		if (!(*pExaScr->info->PrepareCopy)(pSrcPixmap,

+						   pDstPixmap,

+						   1, 1,

+						   pGC ? pGC->alu : GXcopy,

+						   pGC ? pGC->planemask :

+							 FB_ALLONES))

+		    return FALSE;

+	    }

+	    (*pExaScr->info->Copy)(pDstPixmap,

+				   src_off_x + pbox->x1 + dx,

+				   src_off_y + pbox->y1 + dy,

+				   dst_off_x + pbox->x1,

+				   dst_off_y + pbox->y1,

+				   pbox->x2 - pbox->x1,

+				   pbox->y2 - pbox->y1);

+	} else if (dx >= 0) {

+	    /*

+	     * xdir = 1, ydir = -1.

+	     * Perform line-by-line xdir = ydir = 1 blits, going up.

+	     */

+	    int i;

+	    if (dirsetup != 1) {

+		if (dirsetup != 0)

+		    pExaScr->info->DoneCopy(pDstPixmap);

+		dirsetup = 1;

+		if (!(*pExaScr->info->PrepareCopy)(pSrcPixmap,

+						   pDstPixmap,

+						   1, 1,

+						   pGC ? pGC->alu : GXcopy,

+						   pGC ? pGC->planemask :

+							 FB_ALLONES))

+		    return FALSE;

+	    }

+	    for (i = pbox->y2 - pbox->y1 - 1; i >= 0; i--)

+		(*pExaScr->info->Copy)(pDstPixmap,

+				       src_off_x + pbox->x1 + dx,

+				       src_off_y + pbox->y1 + dy + i,

+				       dst_off_x + pbox->x1,

+				       dst_off_y + pbox->y1 + i,

+				       pbox->x2 - pbox->x1, 1);

+	} else {

+	    /*

+	     * xdir = -1, ydir = 1.

+	     * Perform line-by-line xdir = ydir = -1 blits, going down.

+	     */

+	    int i;

+	    if (dirsetup != -1) {

+		if (dirsetup != 0)

+		    pExaScr->info->DoneCopy(pDstPixmap);

+		dirsetup = -1;

+		if (!(*pExaScr->info->PrepareCopy)(pSrcPixmap,

+						   pDstPixmap,

+						   -1, -1,

+						   pGC ? pGC->alu : GXcopy,

+						   pGC ? pGC->planemask :

+							 FB_ALLONES))

+		    return FALSE;

+	    }

+	    for (i = 0; i < pbox->y2 - pbox->y1; i++)

+		(*pExaScr->info->Copy)(pDstPixmap,

+				       src_off_x + pbox->x1 + dx,

+				       src_off_y + pbox->y1 + dy + i,

+				       dst_off_x + pbox->x1,

+				       dst_off_y + pbox->y1 + i,

+				       pbox->x2 - pbox->x1, 1);

+	}

+    }

+    if (dirsetup != 0)

+	pExaScr->info->DoneCopy(pDstPixmap);

+    exaMarkSync(pDstDrawable->pScreen);

+    return TRUE;

+}

+

+Bool

+exaHWCopyNtoN (DrawablePtr    pSrcDrawable,

+	     DrawablePtr    pDstDrawable,

+	     GCPtr	    pGC,

+	     BoxPtr	    pbox,

+	     int	    nbox,

+	     int	    dx,

+	     int	    dy,

+	     Bool	    reverse,

+	     Bool	    upsidedown)

+{

+    ExaScreenPriv (pDstDrawable->pScreen);

+    PixmapPtr pSrcPixmap, pDstPixmap;

+    ExaPixmapPrivPtr pSrcExaPixmap, pDstExaPixmap;

+    int	    src_off_x, src_off_y;

+    int	    dst_off_x, dst_off_y;

+    RegionPtr srcregion = NULL, dstregion = NULL;

+    xRectangle *rects;

+    Bool ret = TRUE;

+

+    /* avoid doing copy operations if no boxes */

+    if (nbox == 0)

+	return TRUE;

+

+    pSrcPixmap = exaGetDrawablePixmap (pSrcDrawable);

+    pDstPixmap = exaGetDrawablePixmap (pDstDrawable);

+

+    exaGetDrawableDeltas (pSrcDrawable, pSrcPixmap, &src_off_x, &src_off_y);

+    exaGetDrawableDeltas (pDstDrawable, pDstPixmap, &dst_off_x, &dst_off_y);

+

+    rects = xalloc(nbox * sizeof(xRectangle));

+

+    if (rects) {

+	int i;

+	int ordering;

+

+	for (i = 0; i < nbox; i++) {

+	    rects[i].x = pbox[i].x1 + dx + src_off_x;

+	    rects[i].y = pbox[i].y1 + dy + src_off_y;

+	    rects[i].width = pbox[i].x2 - pbox[i].x1;

+	    rects[i].height = pbox[i].y2 - pbox[i].y1;

+	}

+

+	/* This must match the miRegionCopy() logic for reversing rect order */

+	if (nbox == 1 || (dx > 0 && dy > 0) ||

+	    (pDstDrawable != pSrcDrawable &&

+	     (pDstDrawable->type != DRAWABLE_WINDOW ||

+	      pSrcDrawable->type != DRAWABLE_WINDOW)))

+	    ordering = CT_YXBANDED;

+	else

+	    ordering = CT_UNSORTED;

+

+	srcregion  = RECTS_TO_REGION(pScreen, nbox, rects, ordering);

+	xfree(rects);

+

+	if (!pGC || !exaGCReadsDestination(pDstDrawable, pGC->planemask,

+					   pGC->fillStyle, pGC->alu,

+					   pGC->clientClipType)) {

+	    dstregion = REGION_CREATE(pScreen, NullBox, 0);

+	    REGION_COPY(pScreen, dstregion, srcregion);

+	    REGION_TRANSLATE(pScreen, dstregion, dst_off_x - dx - src_off_x,

+			     dst_off_y - dy - src_off_y);

+	}

+    }

+

+

+    pSrcExaPixmap = ExaGetPixmapPriv (pSrcPixmap);

+    pDstExaPixmap = ExaGetPixmapPriv (pDstPixmap);

+

+    /* Check whether the accelerator can use this pixmap.

+     * If the pitch of the pixmaps is out of range, there's nothing

+     * we can do but fall back to software rendering.

+     */

+    if (pSrcExaPixmap->accel_blocked & EXA_RANGE_PITCH ||

+        pDstExaPixmap->accel_blocked & EXA_RANGE_PITCH)

+	goto fallback;

+

+    /* If the width or the height of either of the pixmaps

+     * is out of range, check whether the boxes are actually out of the

+     * addressable range as well. If they aren't, we can still do

+     * the copying in hardware.

+     */

+    if (pSrcExaPixmap->accel_blocked || pDstExaPixmap->accel_blocked) {

+        int i;

+

+        for (i = 0; i < nbox; i++) {

+            /* src */

+            if ((pbox[i].x2 + dx + src_off_x) >= pExaScr->info->maxX ||

+                (pbox[i].y2 + dy + src_off_y) >= pExaScr->info->maxY)

+                goto fallback;

+

+            /* dst */

+            if ((pbox[i].x2 + dst_off_x) >= pExaScr->info->maxX ||

+                (pbox[i].y2 + dst_off_y) >= pExaScr->info->maxY)

+                goto fallback;

+        }

+    }

+

+    if (pExaScr->do_migration) {

+	ExaMigrationRec pixmaps[2];

+

+	pixmaps[0].as_dst = TRUE;

+	pixmaps[0].as_src = FALSE;

+	pixmaps[0].pPix = pDstPixmap;

+	pixmaps[0].pReg = dstregion;

+	pixmaps[1].as_dst = FALSE;

+	pixmaps[1].as_src = TRUE;

+	pixmaps[1].pPix = pSrcPixmap;

+	pixmaps[1].pReg = srcregion;

+

+	exaDoMigration (pixmaps, 2, TRUE);

+    }

+

+    /* Mixed directions must be handled specially if the card is lame */

+    if ((pExaScr->info->flags & EXA_TWO_BITBLT_DIRECTIONS) &&

+	reverse != upsidedown) {

+	if (exaCopyNtoNTwoDir(pSrcDrawable, pDstDrawable, pGC, pbox, nbox,

+			       dx, dy))

+	    goto out;

+	goto fallback;

+    }

+

+    if (exaPixmapIsOffscreen(pDstPixmap)) {

+	/* Normal blitting. */

+	if (exaPixmapIsOffscreen(pSrcPixmap)) {

+	    if (!(*pExaScr->info->PrepareCopy) (pSrcPixmap, pDstPixmap, reverse ? -1 : 1,

+						upsidedown ? -1 : 1,

+						pGC ? pGC->alu : GXcopy,

+						pGC ? pGC->planemask : FB_ALLONES)) {

+		goto fallback;

+	    }

+

+	    while (nbox--)

+	    {

+		(*pExaScr->info->Copy) (pDstPixmap,

+					pbox->x1 + dx + src_off_x,

+					pbox->y1 + dy + src_off_y,

+					pbox->x1 + dst_off_x, pbox->y1 + dst_off_y,

+					pbox->x2 - pbox->x1, pbox->y2 - pbox->y1);

+		pbox++;

+	    }

+

+	    (*pExaScr->info->DoneCopy) (pDstPixmap);

+	    exaMarkSync (pDstDrawable->pScreen);

+	/* UTS: mainly for SHM PutImage's secondary path. */

+	} else {

+	    int bpp = pSrcDrawable->bitsPerPixel;

+	    int src_stride = exaGetPixmapPitch(pSrcPixmap);

+	    CARD8 *src = NULL;

+

+	    if (!pExaScr->info->UploadToScreen)

+		goto fallback;

+

+	    if (pSrcDrawable->bitsPerPixel != pDstDrawable->bitsPerPixel)

+		goto fallback;

+

+	    if (pSrcDrawable->bitsPerPixel < 8)

+		goto fallback;

+

+	    if (pGC && !(pGC->alu == GXcopy && EXA_PM_IS_SOLID(pSrcDrawable,  pGC->planemask)))

+		goto fallback;

+

+	    while (nbox--)

+	    {

+		src = pSrcExaPixmap->sys_ptr + (pbox->y1 + dy + src_off_y) * src_stride + (pbox->x1 + dx + src_off_x) * (bpp / 8);

+		if (!pExaScr->info->UploadToScreen(pDstPixmap, pbox->x1 + dst_off_x,

+				pbox->y1 + dst_off_y, pbox->x2 - pbox->x1, pbox->y2 - pbox->y1,

+				(char *) src, src_stride))

+		    goto fallback;

+

+		pbox++;

+	    }

+	}

+    } else

+	goto fallback;

+

+    goto out;

+

+fallback:

+    ret = FALSE;

+

+out:

+    if (dstregion) {

+	REGION_UNINIT(pScreen, dstregion);

+	REGION_DESTROY(pScreen, dstregion);

+    }

+    if (srcregion) {

+	REGION_UNINIT(pScreen, srcregion);

+	REGION_DESTROY(pScreen, srcregion);

+    }

+

+    return ret;

+}

+

+void

+exaCopyNtoN (DrawablePtr    pSrcDrawable,

+	     DrawablePtr    pDstDrawable,

+	     GCPtr	    pGC,

+	     BoxPtr	    pbox,

+	     int	    nbox,

+	     int	    dx,

+	     int	    dy,

+	     Bool	    reverse,

+	     Bool	    upsidedown,

+	     Pixel	    bitplane,

+	     void	    *closure)

+{

+    ExaScreenPriv(pDstDrawable->pScreen);

+

+    if (pExaScr->fallback_flags & EXA_FALLBACK_COPYWINDOW)

+	return;

+

+    if (exaHWCopyNtoN(pSrcDrawable, pDstDrawable, pGC, pbox, nbox, dx, dy, reverse, upsidedown))

+	return;

+

+    /* This is a CopyWindow, it's cleaner to fallback at the original call. */

+    if (pExaScr->fallback_flags & EXA_ACCEL_COPYWINDOW) {

+	pExaScr->fallback_flags |= EXA_FALLBACK_COPYWINDOW;

+	return;

+    }

+

+    /* fallback */

+    ExaCheckCopyNtoN(pSrcDrawable, pDstDrawable, pGC, pbox, nbox, dx, dy, reverse, upsidedown, bitplane, closure);

+}

+

+RegionPtr

+exaCopyArea(DrawablePtr pSrcDrawable, DrawablePtr pDstDrawable, GCPtr pGC,

+	    int srcx, int srcy, int width, int height, int dstx, int dsty)

+{

+    ExaScreenPriv (pDstDrawable->pScreen);

+

+    if (pExaScr->swappedOut) {

+        return  ExaCheckCopyArea(pSrcDrawable, pDstDrawable, pGC,

+                                 srcx, srcy, width, height, dstx, dsty);

+    }

+

+    return  miDoCopy (pSrcDrawable, pDstDrawable, pGC,

+                      srcx, srcy, width, height,

+                      dstx, dsty, exaCopyNtoN, 0, NULL);

+}

+

+static void

+exaPolyPoint(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt,

+	     DDXPointPtr ppt)

+{

+    int i;

+    xRectangle *prect;

+

+    /* If we can't reuse the current GC as is, don't bother accelerating the

+     * points.

+     */

+    if (pGC->fillStyle != FillSolid) {

+	ExaCheckPolyPoint(pDrawable, pGC, mode, npt, ppt);

+	return;

+    }

+

+    prect = xalloc(sizeof(xRectangle) * npt);

+    for (i = 0; i < npt; i++) {

+	prect[i].x = ppt[i].x;

+	prect[i].y = ppt[i].y;

+	if (i > 0 && mode == CoordModePrevious) {

+	    prect[i].x += prect[i - 1].x;

+	    prect[i].y += prect[i - 1].y;

+	}

+	prect[i].width = 1;

+	prect[i].height = 1;

+    }

+    pGC->ops->PolyFillRect(pDrawable, pGC, npt, prect);

+    xfree(prect);

+}

+

+/**

+ * exaPolylines() checks if it can accelerate the lines as a group of

+ * horizontal or vertical lines (rectangles), and uses existing rectangle fill

+ * acceleration if so.

+ */

+static void

+exaPolylines(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt,

+	     DDXPointPtr ppt)

+{

+    xRectangle *prect;

+    int x1, x2, y1, y2;

+    int i;

+

+    /* Don't try to do wide lines or non-solid fill style. */

+    if (pGC->lineWidth != 0 || pGC->lineStyle != LineSolid ||

+	pGC->fillStyle != FillSolid) {

+	ExaCheckPolylines(pDrawable, pGC, mode, npt, ppt);

+	return;

+    }

+

+    prect = xalloc(sizeof(xRectangle) * (npt - 1));

+    x1 = ppt[0].x;

+    y1 = ppt[0].y;

+    /* If we have any non-horizontal/vertical, fall back. */

+    for (i = 0; i < npt - 1; i++) {

+	if (mode == CoordModePrevious) {

+	    x2 = x1 + ppt[i + 1].x;

+	    y2 = y1 + ppt[i + 1].y;

+	} else {

+	    x2 = ppt[i + 1].x;

+	    y2 = ppt[i + 1].y;

+	}

+

+	if (x1 != x2 && y1 != y2) {

+	    xfree(prect);

+	    ExaCheckPolylines(pDrawable, pGC, mode, npt, ppt);

+	    return;

+	}

+

+	if (x1 < x2) {

+	    prect[i].x = x1;

+	    prect[i].width = x2 - x1 + 1;

+	} else {

+	    prect[i].x = x2;

+	    prect[i].width = x1 - x2 + 1;

+	}

+	if (y1 < y2) {

+	    prect[i].y = y1;

+	    prect[i].height = y2 - y1 + 1;

+	} else {

+	    prect[i].y = y2;

+	    prect[i].height = y1 - y2 + 1;

+	}

+

+	x1 = x2;

+	y1 = y2;

+    }

+    pGC->ops->PolyFillRect(pDrawable, pGC, npt - 1, prect);

+    xfree(prect);

+}

+

+/**

+ * exaPolySegment() checks if it can accelerate the lines as a group of

+ * horizontal or vertical lines (rectangles), and uses existing rectangle fill

+ * acceleration if so.

+ */

+static void

+exaPolySegment (DrawablePtr pDrawable, GCPtr pGC, int nseg,

+		xSegment *pSeg)

+{

+    xRectangle *prect;

+    int i;

+

+    /* Don't try to do wide lines or non-solid fill style. */

+    if (pGC->lineWidth != 0 || pGC->lineStyle != LineSolid ||

+	pGC->fillStyle != FillSolid)

+    {

+	ExaCheckPolySegment(pDrawable, pGC, nseg, pSeg);

+	return;

+    }

+

+    /* If we have any non-horizontal/vertical, fall back. */

+    for (i = 0; i < nseg; i++) {

+	if (pSeg[i].x1 != pSeg[i].x2 && pSeg[i].y1 != pSeg[i].y2) {

+	    ExaCheckPolySegment(pDrawable, pGC, nseg, pSeg);

+	    return;

+	}

+    }

+

+    prect = xalloc(sizeof(xRectangle) * nseg);

+    for (i = 0; i < nseg; i++) {

+	if (pSeg[i].x1 < pSeg[i].x2) {

+	    prect[i].x = pSeg[i].x1;

+	    prect[i].width = pSeg[i].x2 - pSeg[i].x1 + 1;

+	} else {

+	    prect[i].x = pSeg[i].x2;

+	    prect[i].width = pSeg[i].x1 - pSeg[i].x2 + 1;

+	}

+	if (pSeg[i].y1 < pSeg[i].y2) {

+	    prect[i].y = pSeg[i].y1;

+	    prect[i].height = pSeg[i].y2 - pSeg[i].y1 + 1;

+	} else {

+	    prect[i].y = pSeg[i].y2;

+	    prect[i].height = pSeg[i].y1 - pSeg[i].y2 + 1;

+	}

+

+	/* don't paint last pixel */

+	if (pGC->capStyle == CapNotLast) {

+	    if (prect[i].width == 1)

+		prect[i].height--;

+	    else

+		prect[i].width--;

+	}

+    }

+    pGC->ops->PolyFillRect(pDrawable, pGC, nseg, prect);

+    xfree(prect);

+}

+

+static Bool exaFillRegionSolid (DrawablePtr pDrawable, RegionPtr pRegion,

+				Pixel pixel, CARD32 planemask, CARD32 alu,

+				unsigned int clientClipType);

+

+static void

+exaPolyFillRect(DrawablePtr pDrawable,

+		GCPtr	    pGC,

+		int	    nrect,

+		xRectangle  *prect)

+{

+    ExaScreenPriv (pDrawable->pScreen);

+    RegionPtr	    pClip = fbGetCompositeClip(pGC);

+    PixmapPtr	    pPixmap = exaGetDrawablePixmap(pDrawable);

+    ExaPixmapPriv (pPixmap);

+    register BoxPtr pbox;

+    BoxPtr	    pextent;

+    int		    extentX1, extentX2, extentY1, extentY2;

+    int		    fullX1, fullX2, fullY1, fullY2;

+    int		    partX1, partX2, partY1, partY2;

+    int		    xoff, yoff;

+    int		    xorg, yorg;

+    int		    n;

+    RegionPtr pReg = RECTS_TO_REGION(pScreen, nrect, prect, CT_UNSORTED);

+

+    /* Compute intersection of rects and clip region */

+    REGION_TRANSLATE(pScreen, pReg, pDrawable->x, pDrawable->y);

+    REGION_INTERSECT(pScreen, pReg, pClip, pReg);

+

+    if (!REGION_NUM_RECTS(pReg)) {

+	goto out;

+    }

+

+    exaGetDrawableDeltas(pDrawable, pPixmap, &xoff, &yoff);

+

+    if (pExaScr->swappedOut || pExaPixmap->accel_blocked)

+    {

+	goto fallback;

+    }

+

+    /* For ROPs where overlaps don't matter, convert rectangles to region and

+     * call exaFillRegion{Solid,Tiled}.

+     */

+    if ((pGC->fillStyle == FillSolid || pGC->fillStyle == FillTiled) &&

+	(nrect == 1 || pGC->alu == GXcopy || pGC->alu == GXclear ||

+	 pGC->alu == GXnoop || pGC->alu == GXcopyInverted ||

+	 pGC->alu == GXset)) {

+	if (((pGC->fillStyle == FillSolid || pGC->tileIsPixel) &&

+	     exaFillRegionSolid(pDrawable, pReg, pGC->fillStyle == FillSolid ?

+				pGC->fgPixel : pGC->tile.pixel,	pGC->planemask,

+				pGC->alu, pGC->clientClipType)) ||

+	    (pGC->fillStyle == FillTiled && !pGC->tileIsPixel &&

+	     exaFillRegionTiled(pDrawable, pReg, pGC->tile.pixmap, &pGC->patOrg,

+				pGC->planemask, pGC->alu,

+				pGC->clientClipType))) {

+	    goto out;

+	}

+    }

+

+    if (pGC->fillStyle != FillSolid &&

+	!(pGC->tileIsPixel && pGC->fillStyle == FillTiled))

+    {

+	goto fallback;

+    }

+

+    if (pExaScr->do_migration) {

+	ExaMigrationRec pixmaps[1];

+

+	pixmaps[0].as_dst = TRUE;

+	pixmaps[0].as_src = FALSE;

+	pixmaps[0].pPix = pPixmap;

+	pixmaps[0].pReg = NULL;

+

+	exaDoMigration (pixmaps, 1, TRUE);

+    }

+

+    if (!exaPixmapIsOffscreen (pPixmap) ||

+	!(*pExaScr->info->PrepareSolid) (pPixmap,

+					 pGC->alu,

+					 pGC->planemask,

+					 pGC->fgPixel))

+    {

+fallback:

+	ExaCheckPolyFillRect (pDrawable, pGC, nrect, prect);

+	goto out;

+    }

+

+    xorg = pDrawable->x;

+    yorg = pDrawable->y;

+

+    pextent = REGION_EXTENTS(pGC->pScreen, pClip);

+    extentX1 = pextent->x1;

+    extentY1 = pextent->y1;

+    extentX2 = pextent->x2;

+    extentY2 = pextent->y2;

+    while (nrect--)

+    {

+	fullX1 = prect->x + xorg;

+	fullY1 = prect->y + yorg;

+	fullX2 = fullX1 + (int) prect->width;

+	fullY2 = fullY1 + (int) prect->height;

+	prect++;

+

+	if (fullX1 < extentX1)

+	    fullX1 = extentX1;

+

+	if (fullY1 < extentY1)

+	    fullY1 = extentY1;

+

+	if (fullX2 > extentX2)

+	    fullX2 = extentX2;

+

+	if (fullY2 > extentY2)

+	    fullY2 = extentY2;

+

+	if ((fullX1 >= fullX2) || (fullY1 >= fullY2))

+	    continue;

+	n = REGION_NUM_RECTS (pClip);

+	if (n == 1)

+	{

+	    (*pExaScr->info->Solid) (pPixmap,

+				     fullX1 + xoff, fullY1 + yoff,

+				     fullX2 + xoff, fullY2 + yoff);

+	}

+	else

+	{

+	    pbox = REGION_RECTS(pClip);

+	    /*

+	     * clip the rectangle to each box in the clip region

+	     * this is logically equivalent to calling Intersect(),

+	     * but rectangles may overlap each other here.

+	     */

+	    while(n--)

+	    {

+		partX1 = pbox->x1;

+		if (partX1 < fullX1)

+		    partX1 = fullX1;

+		partY1 = pbox->y1;

+		if (partY1 < fullY1)

+		    partY1 = fullY1;

+		partX2 = pbox->x2;

+		if (partX2 > fullX2)

+		    partX2 = fullX2;

+		partY2 = pbox->y2;

+		if (partY2 > fullY2)

+		    partY2 = fullY2;

+

+		pbox++;

+

+		if (partX1 < partX2 && partY1 < partY2) {

+		    (*pExaScr->info->Solid) (pPixmap,

+					     partX1 + xoff, partY1 + yoff,

+					     partX2 + xoff, partY2 + yoff);

+		}

+	    }

+	}

+    }

+    (*pExaScr->info->DoneSolid) (pPixmap);

+    exaMarkSync(pDrawable->pScreen);

+

+out:

+    REGION_UNINIT(pScreen, pReg);

+    REGION_DESTROY(pScreen, pReg);

+}

+

+const GCOps exaOps = {

+    exaFillSpans,

+    ExaCheckSetSpans,

+    exaPutImage,

+    exaCopyArea,

+    ExaCheckCopyPlane,

+    exaPolyPoint,

+    exaPolylines,

+    exaPolySegment,

+    miPolyRectangle,

+    ExaCheckPolyArc,

+    miFillPolygon,

+    exaPolyFillRect,

+    miPolyFillArc,

+    miPolyText8,

+    miPolyText16,

+    miImageText8,

+    miImageText16,

+    ExaCheckImageGlyphBlt,

+    ExaCheckPolyGlyphBlt,

+    ExaCheckPushPixels,

+};

+

+void

+exaCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)

+{

+    RegionRec	rgnDst;

+    int		dx, dy;

+    PixmapPtr	pPixmap = (*pWin->drawable.pScreen->GetWindowPixmap) (pWin);

+    ExaScreenPriv(pWin->drawable.pScreen);

+

+    dx = ptOldOrg.x - pWin->drawable.x;

+    dy = ptOldOrg.y - pWin->drawable.y;

+    REGION_TRANSLATE(pWin->drawable.pScreen, prgnSrc, -dx, -dy);

+

+    REGION_INIT (pWin->drawable.pScreen, &rgnDst, NullBox, 0);

+

+    REGION_INTERSECT(pWin->drawable.pScreen, &rgnDst, &pWin->borderClip, prgnSrc);

+#ifdef COMPOSITE

+    if (pPixmap->screen_x || pPixmap->screen_y)

+	REGION_TRANSLATE (pWin->drawable.pScreen, &rgnDst,

+			  -pPixmap->screen_x, -pPixmap->screen_y);

+#endif

+

+    pExaScr->fallback_flags |= EXA_ACCEL_COPYWINDOW;

+    miCopyRegion (&pPixmap->drawable, &pPixmap->drawable,

+		  NULL,

+		  &rgnDst, dx, dy, exaCopyNtoN, 0, NULL);

+    pExaScr->fallback_flags &= ~EXA_ACCEL_COPYWINDOW;

+

+    REGION_UNINIT(pWin->drawable.pScreen, &rgnDst);

+

+    if (pExaScr->fallback_flags & EXA_FALLBACK_COPYWINDOW) {

+	pExaScr->fallback_flags &= ~EXA_FALLBACK_COPYWINDOW;

+	REGION_TRANSLATE(pWin->drawable.pScreen, prgnSrc, dx, dy);

+	ExaCheckCopyWindow(pWin, ptOldOrg, prgnSrc);

+    }

+}

+

+static Bool

+exaFillRegionSolid (DrawablePtr	pDrawable, RegionPtr pRegion, Pixel pixel,

+		    CARD32 planemask, CARD32 alu, unsigned int clientClipType)

+{

+    ExaScreenPriv(pDrawable->pScreen);

+    PixmapPtr pPixmap = exaGetDrawablePixmap (pDrawable);

+    ExaPixmapPriv (pPixmap);

+    int xoff, yoff;

+    Bool ret = FALSE;

+

+    exaGetDrawableDeltas(pDrawable, pPixmap, &xoff, &yoff);

+    REGION_TRANSLATE(pScreen, pRegion, xoff, yoff);

+

+    if (pExaPixmap->accel_blocked)

+	goto out;

+

+    if (pExaScr->do_migration) {

+	ExaMigrationRec pixmaps[1];

+

+	pixmaps[0].as_dst = TRUE;

+	pixmaps[0].as_src = FALSE;

+	pixmaps[0].pPix = pPixmap;

+	pixmaps[0].pReg = exaGCReadsDestination(pDrawable, planemask, FillSolid,

+						alu, clientClipType) ? NULL : pRegion;

+

+	exaDoMigration (pixmaps, 1, TRUE);

+    }

+

+    if (exaPixmapIsOffscreen (pPixmap) &&

+	(*pExaScr->info->PrepareSolid) (pPixmap, alu, planemask, pixel))

+    {

+	int nbox;

+	BoxPtr pBox;

+

+	nbox = REGION_NUM_RECTS (pRegion);

+	pBox = REGION_RECTS (pRegion);

+

+	while (nbox--)

+	{

+	    (*pExaScr->info->Solid) (pPixmap, pBox->x1, pBox->y1, pBox->x2,

+				     pBox->y2);

+	    pBox++;

+	}

+	(*pExaScr->info->DoneSolid) (pPixmap);

+	exaMarkSync(pDrawable->pScreen);

+

+	if (pExaPixmap->pDamage &&

+	    pExaPixmap->sys_ptr && pDrawable->type == DRAWABLE_PIXMAP &&

+	    pDrawable->width == 1 && pDrawable->height == 1 &&

+	    pDrawable->bitsPerPixel != 24) {

+	    ExaPixmapPriv(pPixmap);

+

+	    switch (pDrawable->bitsPerPixel) {

+	    case 32:

+		*(CARD32*)pExaPixmap->sys_ptr = pixel;

+		break;

+	    case 16:

+		*(CARD16*)pExaPixmap->sys_ptr = pixel;

+		break;

+	    case 8:

+		*(CARD8*)pExaPixmap->sys_ptr = pixel;

+	    }

+

+	    REGION_UNION(pScreen, &pExaPixmap->validSys, &pExaPixmap->validSys,

+			 pRegion);

+	}

+

+	ret = TRUE;

+    }

+

+out:

+    REGION_TRANSLATE(pScreen, pRegion, -xoff, -yoff);

+

+    return ret;

+}

+

+/* Try to do an accelerated tile of the pTile into pRegion of pDrawable.

+ * Based on fbFillRegionTiled(), fbTile().

+ */

+Bool

+exaFillRegionTiled (DrawablePtr pDrawable, RegionPtr pRegion, PixmapPtr pTile,

+		    DDXPointPtr pPatOrg, CARD32 planemask, CARD32 alu,

+		    unsigned int clientClipType)

+{

+    ExaScreenPriv(pDrawable->pScreen);

+    PixmapPtr pPixmap;

+    ExaPixmapPrivPtr pExaPixmap;

+    ExaPixmapPrivPtr pTileExaPixmap = ExaGetPixmapPriv(pTile);

+    int xoff, yoff;

+    int tileWidth, tileHeight;

+    int nbox = REGION_NUM_RECTS (pRegion);

+    BoxPtr pBox = REGION_RECTS (pRegion);

+    Bool ret = FALSE;

+    int i;

+

+    tileWidth = pTile->drawable.width;

+    tileHeight = pTile->drawable.height;

+

+    /* If we're filling with a solid color, grab it out and go to

+     * FillRegionSolid, saving numerous copies.

+     */

+    if (tileWidth == 1 && tileHeight == 1)

+	return exaFillRegionSolid(pDrawable, pRegion,

+				  exaGetPixmapFirstPixel (pTile), planemask,

+				  alu, clientClipType);

+

+    pPixmap = exaGetDrawablePixmap (pDrawable);

+    pExaPixmap = ExaGetPixmapPriv (pPixmap);

+

+    if (pExaPixmap->accel_blocked || pTileExaPixmap->accel_blocked)

+	return FALSE;

+

+    if (pExaScr->do_migration) {

+	ExaMigrationRec pixmaps[2];

+

+	pixmaps[0].as_dst = TRUE;

+	pixmaps[0].as_src = FALSE;

+	pixmaps[0].pPix = pPixmap;

+	pixmaps[0].pReg = exaGCReadsDestination(pDrawable, planemask, FillTiled,

+						alu, clientClipType) ? NULL : pRegion;

+	pixmaps[1].as_dst = FALSE;

+	pixmaps[1].as_src = TRUE;

+	pixmaps[1].pPix = pTile;

+	pixmaps[1].pReg = NULL;

+

+	exaDoMigration (pixmaps, 2, TRUE);

+    }

+

+    pPixmap = exaGetOffscreenPixmap (pDrawable, &xoff, &yoff);

+

+    if (!pPixmap || !exaPixmapIsOffscreen(pTile))

+	return FALSE;

+

+    if ((*pExaScr->info->PrepareCopy) (pTile, pPixmap, 1, 1, alu, planemask))

+    {

+	if (xoff || yoff)

+	    REGION_TRANSLATE(pScreen, pRegion, xoff, yoff);

+

+	for (i = 0; i < nbox; i++)

+	{

+	    int height = pBox[i].y2 - pBox[i].y1;

+	    int dstY = pBox[i].y1;

+	    int tileY;

+

+	    if (alu == GXcopy)

+		height = min(height, tileHeight);

+

+	    modulus(dstY - yoff - pDrawable->y - pPatOrg->y, tileHeight, tileY);

+

+	    while (height > 0) {

+		int width = pBox[i].x2 - pBox[i].x1;

+		int dstX = pBox[i].x1;

+		int tileX;

+		int h = tileHeight - tileY;

+

+		if (alu == GXcopy)

+		    width = min(width, tileWidth);

+

+		if (h > height)

+		    h = height;

+		height -= h;

+

+		modulus(dstX - xoff - pDrawable->x - pPatOrg->x, tileWidth,

+			tileX);

+

+		while (width > 0) {

+		    int w = tileWidth - tileX;

+		    if (w > width)

+			w = width;

+		    width -= w;

+

+		    (*pExaScr->info->Copy) (pPixmap, tileX, tileY, dstX, dstY,

+					    w, h);

+		    dstX += w;

+		    tileX = 0;

+		}

+		dstY += h;

+		tileY = 0;

+	    }

+	}

+	(*pExaScr->info->DoneCopy) (pPixmap);

+

+	/* With GXcopy, we only need to do the basic algorithm up to the tile

+	 * size; then, we can just keep doubling the destination in each

+	 * direction until it fills the box. This way, the number of copy

+	 * operations is O(log(rx)) + O(log(ry)) instead of O(rx * ry), where

+	 * rx/ry is the ratio between box and tile width/height. This can make

+	 * a big difference if each driver copy incurs a significant constant

+	 * overhead.

+	 */

+	if (alu != GXcopy)

+	    ret = TRUE;

+	else {

+	    Bool more_copy = FALSE;

+

+	    for (i = 0; i < nbox; i++) {

+		int dstX = pBox[i].x1 + tileWidth;

+		int dstY = pBox[i].y1 + tileHeight;

+

+		if ((dstX < pBox[i].x2) || (dstY < pBox[i].y2)) {

+		    more_copy = TRUE;

+		    break;

+		}

+	    }

+

+	    if (more_copy == FALSE)

+		ret = TRUE;

+

+	    if (more_copy && (*pExaScr->info->PrepareCopy) (pPixmap, pPixmap,

+							    1, 1, alu, planemask)) {

+		for (i = 0; i < nbox; i++)

+		{

+		    int dstX = pBox[i].x1 + tileWidth;

+		    int dstY = pBox[i].y1 + tileHeight;

+		    int width = min(pBox[i].x2 - dstX, tileWidth);

+		    int height = min(pBox[i].y2 - pBox[i].y1, tileHeight);

+

+		    while (dstX < pBox[i].x2) {

+			(*pExaScr->info->Copy) (pPixmap, pBox[i].x1, pBox[i].y1,

+						dstX, pBox[i].y1, width, height);

+			dstX += width;

+			width = min(pBox[i].x2 - dstX, width * 2);

+		    }

+

+		    width = pBox[i].x2 - pBox[i].x1;

+		    height = min(pBox[i].y2 - dstY, tileHeight);

+

+		    while (dstY < pBox[i].y2) {

+			(*pExaScr->info->Copy) (pPixmap, pBox[i].x1, pBox[i].y1,

+						pBox[i].x1, dstY, width, height);

+			dstY += height;

+			height = min(pBox[i].y2 - dstY, height * 2);

+		    }

+		}

+

+		(*pExaScr->info->DoneCopy) (pPixmap);

+

+		ret = TRUE;

+	    }

+	}

+

+	exaMarkSync(pDrawable->pScreen);

+

+	if (xoff || yoff)

+	    REGION_TRANSLATE(pScreen, pRegion, -xoff, -yoff);

+    }

+

+    return ret;

+}

+

+

+/**

+ * Accelerates GetImage for solid ZPixmap downloads from framebuffer memory.

+ *

+ * This is probably the only case we actually care about.  The rest fall through

+ * to migration and fbGetImage, which hopefully will result in migration pushing

+ * the pixmap out of framebuffer.

+ */

+void

+exaGetImage (DrawablePtr pDrawable, int x, int y, int w, int h,

+	     unsigned int format, unsigned long planeMask, char *d)

+{

+    ExaScreenPriv (pDrawable->pScreen);

+    PixmapPtr pPix = exaGetDrawablePixmap (pDrawable);

+    int xoff, yoff;

+    Bool ok;

+

+    if (pExaScr->swappedOut)

+	goto fallback;

+

+    exaGetDrawableDeltas (pDrawable, pPix, &xoff, &yoff);

+

+    if (pExaScr->do_migration) {

+	BoxRec Box;

+	RegionRec Reg;

+	ExaMigrationRec pixmaps[1];

+

+	Box.x1 = pDrawable->y + x + xoff;

+	Box.y1 = pDrawable->y + y + yoff;

+	Box.x2 = Box.x1 + w;

+	Box.y2 = Box.y1 + h;

+

+	REGION_INIT(pScreen, &Reg, &Box, 1);

+

+	pixmaps[0].as_dst = FALSE;

+	pixmaps[0].as_src = TRUE;

+	pixmaps[0].pPix = pPix;

+	pixmaps[0].pReg = &Reg;

+

+	exaDoMigration(pixmaps, 1, FALSE);

+

+	REGION_UNINIT(pScreen, &Reg);

+    }

+

+    pPix = exaGetOffscreenPixmap (pDrawable, &xoff, &yoff);

+

+    if (pPix == NULL || pExaScr->info->DownloadFromScreen == NULL)

+	goto fallback;

+

+    /* Only cover the ZPixmap, solid copy case. */

+    if (format != ZPixmap || !EXA_PM_IS_SOLID(pDrawable, planeMask))

+	goto fallback;

+

+    /* Only try to handle the 8bpp and up cases, since we don't want to think

+     * about <8bpp.

+     */

+    if (pDrawable->bitsPerPixel < 8)

+	goto fallback;

+

+    ok = pExaScr->info->DownloadFromScreen(pPix, pDrawable->x + x + xoff,

+					   pDrawable->y + y + yoff, w, h, d,

+					   PixmapBytePad(w, pDrawable->depth));

+    if (ok) {

+	exaWaitSync(pDrawable->pScreen);

+	return;

+    }

+

+fallback:

+    ExaCheckGetImage(pDrawable, x, y, w, h, format, planeMask, d);

+}