xserver git update 21/5/2010

1 files changed, 762 insertions, 740 deletions

diff --git a/xorg-server/exa/exa_unaccel.c b/xorg-server/exa/exa_unaccel.c
index 2f8c4622d..46be2eff9 100644
--- a/xorg-server/exa/exa_unaccel.c
+++ b/xorg-server/exa/exa_unaccel.c
@@ -1,740 +1,762 @@
-/*
- *
- * Copyright © 1999 Keith Packard
- *
- * 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.
- */
-
-#include "exa_priv.h"
-
-#include "mipict.h"
-
-/*
- * These functions wrap the low-level fb rendering functions and
- * synchronize framebuffer/accelerated drawing by stalling until
- * the accelerator is idle
- */
-
-/**
- * Calls exaPrepareAccess with EXA_PREPARE_SRC for the tile, if that is the
- * current fill style.
- *
- * Solid doesn't use an extra pixmap source, and Stippled/OpaqueStippled are
- * 1bpp and never in fb, so we don't worry about them.
- * We should worry about them for completeness sake and going forward.
- */
-void
-exaPrepareAccessGC(GCPtr pGC)
-{
-    if (pGC->stipple)
-        exaPrepareAccess(&pGC->stipple->drawable, EXA_PREPARE_MASK);
-    if (pGC->fillStyle == FillTiled)
-	exaPrepareAccess(&pGC->tile.pixmap->drawable, EXA_PREPARE_SRC);
-}
-
-/**
- * Finishes access to the tile in the GC, if used.
- */
-void
-exaFinishAccessGC(GCPtr pGC)
-{
-    if (pGC->fillStyle == FillTiled)
-	exaFinishAccess(&pGC->tile.pixmap->drawable, EXA_PREPARE_SRC);
-    if (pGC->stipple)
-        exaFinishAccess(&pGC->stipple->drawable, EXA_PREPARE_MASK);
-}
-
-#if DEBUG_TRACE_FALL
-char
-exaDrawableLocation(DrawablePtr pDrawable)
-{
-    return exaDrawableIsOffscreen(pDrawable) ? 's' : 'm';
-}
-#endif /* DEBUG_TRACE_FALL */
-
-void
-ExaCheckFillSpans (DrawablePtr pDrawable, GCPtr pGC, int nspans,
-		   DDXPointPtr ppt, int *pwidth, int fSorted)
-{
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
-    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
-    exaPrepareAccessGC (pGC);
-    pGC->ops->FillSpans (pDrawable, pGC, nspans, ppt, pwidth, fSorted);
-    exaFinishAccessGC (pGC);
-    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-}
-
-void
-ExaCheckSetSpans (DrawablePtr pDrawable, GCPtr pGC, char *psrc,
-		 DDXPointPtr ppt, int *pwidth, int nspans, int fSorted)
-{
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
-    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
-    pGC->ops->SetSpans (pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted);
-    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-}
-
-void
-ExaCheckPutImage (DrawablePtr pDrawable, GCPtr pGC, int depth,
-		 int x, int y, int w, int h, int leftPad, int format,
-		 char *bits)
-{
-    PixmapPtr pPixmap = exaGetDrawablePixmap(pDrawable);
-    ExaPixmapPriv(pPixmap);
-
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
-    if (!pExaScr->prepare_access_reg || !pExaPixmap->pDamage ||
-	exaGCReadsDestination(pDrawable, pGC->planemask, pGC->fillStyle,
-			      pGC->alu, pGC->clientClipType))
-	exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
-    else
-	pExaScr->prepare_access_reg(pPixmap, EXA_PREPARE_DEST,
-				    DamagePendingRegion(pExaPixmap->pDamage));
-    pGC->ops->PutImage (pDrawable, pGC, depth, x, y, w, h, leftPad, format, bits);
-    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-}
-
-void
-ExaCheckCopyNtoN (DrawablePtr pSrc, DrawablePtr pDst,  GCPtr pGC,
-	     BoxPtr	pbox, int nbox, int dx, int dy, Bool	reverse, 
-	     Bool upsidedown, Pixel bitplane, void *closure)
-{
-    RegionRec reg;
-    int xoff, yoff;
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pSrc, pDst,
-		  exaDrawableLocation(pSrc), exaDrawableLocation(pDst)));
-
-    if (pExaScr->prepare_access_reg) {
-	PixmapPtr pPixmap = exaGetDrawablePixmap(pSrc);
-
-	exaGetDrawableDeltas(pSrc, pPixmap, &xoff, &yoff);
-	REGION_INIT(pScreen, &reg, pbox, nbox);
-	REGION_TRANSLATE(pScreen, &reg, xoff + dx, yoff + dy);
-	pExaScr->prepare_access_reg(pPixmap, EXA_PREPARE_SRC, &reg);
-	REGION_UNINIT(pScreen, &reg);
-    } else
-	exaPrepareAccess (pSrc, EXA_PREPARE_SRC);
-
-    if (pExaScr->prepare_access_reg &&
-	!exaGCReadsDestination(pDst, pGC->planemask, pGC->fillStyle,
-			       pGC->alu, pGC->clientClipType)) {
-	PixmapPtr pPixmap = exaGetDrawablePixmap(pDst);
-
-	exaGetDrawableDeltas(pSrc, pPixmap, &xoff, &yoff);
-	REGION_INIT(pScreen, &reg, pbox, nbox);
-	REGION_TRANSLATE(pScreen, &reg, xoff, yoff);
-	pExaScr->prepare_access_reg(pPixmap, EXA_PREPARE_DEST, &reg);
-	REGION_UNINIT(pScreen, &reg);
-    } else
-	exaPrepareAccess (pDst, EXA_PREPARE_DEST);
-
-    /* This will eventually call fbCopyNtoN, with some calculation overhead. */
-    while (nbox--) {
-	pGC->ops->CopyArea (pSrc, pDst, pGC, pbox->x1 - pSrc->x + dx, pbox->y1 - pSrc->y + dy, 
-			pbox->x2 - pbox->x1, pbox->y2 - pbox->y1, pbox->x1 - pDst->x, pbox->y1 - pDst->y);
-	pbox++;
-    }
-    exaFinishAccess (pSrc, EXA_PREPARE_SRC);
-    exaFinishAccess (pDst, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-}
-
-static void
-ExaFallbackPrepareReg(DrawablePtr pDrawable,
-		      GCPtr pGC,
-		      int x, int y, int width, int height,
-		      int index, Bool checkReads)
-{
-    ScreenPtr pScreen = pDrawable->pScreen;
-    ExaScreenPriv(pScreen);
-
-    if (pExaScr->prepare_access_reg &&
-	!(checkReads && exaGCReadsDestination(pDrawable,
-					      pGC->planemask,
-					      pGC->fillStyle,
-					      pGC->alu,
-					      pGC->clientClipType))) {
-	BoxRec box;
-	RegionRec reg;
-	int xoff, yoff;
-	PixmapPtr pPixmap = exaGetDrawablePixmap(pDrawable);
-
-	exaGetDrawableDeltas(pDrawable, pPixmap, &xoff, &yoff);
-	box.x1 = pDrawable->x + x + xoff;
-	box.y1 = pDrawable->y + y + yoff;
-	box.x2 = box.x1 + width;
-	box.y2 = box.y1 + height;
-
-	REGION_INIT(pScreen, &reg, &box, 1);
-	pExaScr->prepare_access_reg(pPixmap, index, &reg);
-	REGION_UNINIT(pScreen, &reg);
-    } else
-	exaPrepareAccess(pDrawable, index);
-}
-
-
-RegionPtr
-ExaCheckCopyArea (DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC,
-		 int srcx, int srcy, int w, int h, int dstx, int dsty)
-{
-    RegionPtr ret;
-
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pSrc, pDst,
-		  exaDrawableLocation(pSrc), exaDrawableLocation(pDst)));
-    ExaFallbackPrepareReg(pSrc, pGC, srcx, srcy, w, h,
-			  EXA_PREPARE_SRC, FALSE);
-    ExaFallbackPrepareReg(pDst, pGC, dstx, dsty, w, h,
-			  EXA_PREPARE_DEST, TRUE);
-    ret = pGC->ops->CopyArea (pSrc, pDst, pGC, srcx, srcy, w, h, dstx, dsty);
-    exaFinishAccess (pSrc, EXA_PREPARE_SRC);
-    exaFinishAccess (pDst, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-
-    return ret;
-}
-
-RegionPtr
-ExaCheckCopyPlane (DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC,
-		  int srcx, int srcy, int w, int h, int dstx, int dsty,
-		  unsigned long bitPlane)
-{
-    RegionPtr ret;
-
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pSrc, pDst,
-		  exaDrawableLocation(pSrc), exaDrawableLocation(pDst)));
-    ExaFallbackPrepareReg(pSrc, pGC, srcx, srcy, w, h,
-			  EXA_PREPARE_SRC, FALSE);
-    ExaFallbackPrepareReg(pDst, pGC, dstx, dsty, w, h,
-			  EXA_PREPARE_DEST, TRUE);
-    ret = pGC->ops->CopyPlane (pSrc, pDst, pGC, srcx, srcy, w, h, dstx, dsty,
-		       bitPlane);
-    exaFinishAccess (pSrc, EXA_PREPARE_SRC);
-    exaFinishAccess (pDst, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-
-    return ret;
-}
-
-void
-ExaCheckPolyPoint (DrawablePtr pDrawable, GCPtr pGC, int mode, int npt,
-		  DDXPointPtr pptInit)
-{
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
-    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
-    pGC->ops->PolyPoint (pDrawable, pGC, mode, npt, pptInit);
-    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-}
-
-void
-ExaCheckPolylines (DrawablePtr pDrawable, GCPtr pGC,
-		  int mode, int npt, DDXPointPtr ppt)
-{
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("to %p (%c), width %d, mode %d, count %d\n",
-		  pDrawable, exaDrawableLocation(pDrawable),
-		  pGC->lineWidth, mode, npt));
-
-    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
-    exaPrepareAccessGC (pGC);
-    pGC->ops->Polylines (pDrawable, pGC, mode, npt, ppt);
-    exaFinishAccessGC (pGC);
-    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-}
-
-void
-ExaCheckPolySegment (DrawablePtr pDrawable, GCPtr pGC,
-		    int nsegInit, xSegment *pSegInit)
-{
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("to %p (%c) width %d, count %d\n", pDrawable,
-		  exaDrawableLocation(pDrawable), pGC->lineWidth, nsegInit));
-
-    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
-    exaPrepareAccessGC (pGC);
-    pGC->ops->PolySegment (pDrawable, pGC, nsegInit, pSegInit);
-    exaFinishAccessGC (pGC);
-    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-}
-
-void
-ExaCheckPolyArc (DrawablePtr pDrawable, GCPtr pGC,
-		int narcs, xArc *pArcs)
-{
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
-
-    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
-    exaPrepareAccessGC (pGC);
-    pGC->ops->PolyArc (pDrawable, pGC, narcs, pArcs);
-    exaFinishAccessGC (pGC);
-    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-}
-
-void
-ExaCheckPolyFillRect (DrawablePtr pDrawable, GCPtr pGC,
-		     int nrect, xRectangle *prect)
-{
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
-
-    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
-    exaPrepareAccessGC (pGC);
-    pGC->ops->PolyFillRect (pDrawable, pGC, nrect, prect);
-    exaFinishAccessGC (pGC);
-    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-}
-
-void
-ExaCheckImageGlyphBlt (DrawablePtr pDrawable, GCPtr pGC,
-		      int x, int y, unsigned int nglyph,
-		      CharInfoPtr *ppci, pointer pglyphBase)
-{
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("to %p (%c)\n", pDrawable,
-		  exaDrawableLocation(pDrawable)));
-    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
-    exaPrepareAccessGC (pGC);
-    pGC->ops->ImageGlyphBlt (pDrawable, pGC, x, y, nglyph, ppci, pglyphBase);
-    exaFinishAccessGC (pGC);
-    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-}
-
-void
-ExaCheckPolyGlyphBlt (DrawablePtr pDrawable, GCPtr pGC,
-		     int x, int y, unsigned int nglyph,
-		     CharInfoPtr *ppci, pointer pglyphBase)
-{
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("to %p (%c), style %d alu %d\n", pDrawable,
-		  exaDrawableLocation(pDrawable), pGC->fillStyle, pGC->alu));
-    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
-    exaPrepareAccessGC (pGC);
-    pGC->ops->PolyGlyphBlt (pDrawable, pGC, x, y, nglyph, ppci, pglyphBase);
-    exaFinishAccessGC (pGC);
-    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-}
-
-void
-ExaCheckPushPixels (GCPtr pGC, PixmapPtr pBitmap,
-		   DrawablePtr pDrawable,
-		   int w, int h, int x, int y)
-{
-    EXA_PRE_FALLBACK_GC(pGC);
-    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pBitmap, pDrawable,
-		  exaDrawableLocation(&pBitmap->drawable),
-		  exaDrawableLocation(pDrawable)));
-    ExaFallbackPrepareReg(pDrawable, pGC, x, y, w, h,
-			  EXA_PREPARE_DEST, TRUE);
-    ExaFallbackPrepareReg(&pBitmap->drawable, pGC, 0, 0, w, h,
-			  EXA_PREPARE_SRC, FALSE);
-    exaPrepareAccessGC (pGC);
-    pGC->ops->PushPixels (pGC, pBitmap, pDrawable, w, h, x, y);
-    exaFinishAccessGC (pGC);
-    exaFinishAccess (&pBitmap->drawable, EXA_PREPARE_SRC);
-    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK_GC(pGC);
-}
-
-void
-ExaCheckCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
-{
-    DrawablePtr pDrawable = &pWin->drawable;
-    ScreenPtr pScreen = pDrawable->pScreen;
-    EXA_PRE_FALLBACK(pScreen);
-    EXA_FALLBACK(("from %p\n", pWin));
-
-    /* Only need the source bits, the destination region will be overwritten */
-    if (pExaScr->prepare_access_reg) {
-	PixmapPtr pPixmap = pScreen->GetWindowPixmap(pWin);
-	int xoff, yoff;
-
-	exaGetDrawableDeltas(&pWin->drawable, pPixmap, &xoff, &yoff);
-	REGION_TRANSLATE(pScreen, prgnSrc, xoff, yoff);
-	pExaScr->prepare_access_reg(pPixmap, EXA_PREPARE_SRC, prgnSrc);
-	REGION_TRANSLATE(pScreen, prgnSrc, -xoff, -yoff);
-    } else
-	exaPrepareAccess(pDrawable, EXA_PREPARE_SRC);
-
-    swap(pExaScr, pScreen, CopyWindow);
-    pScreen->CopyWindow (pWin, ptOldOrg, prgnSrc);
-    swap(pExaScr, pScreen, CopyWindow);
-    exaFinishAccess (pDrawable, EXA_PREPARE_SRC);
-    EXA_POST_FALLBACK(pScreen);
-}
-
-void
-ExaCheckGetImage(DrawablePtr pDrawable, int x, int y, int w, int h,
-		unsigned int format, unsigned long planeMask, char *d)
-{
-    ScreenPtr pScreen = pDrawable->pScreen;
-    EXA_PRE_FALLBACK(pScreen);
-    EXA_FALLBACK(("from %p (%c)\n", pDrawable,
-		  exaDrawableLocation(pDrawable)));
-
-    ExaFallbackPrepareReg(pDrawable, NULL, x, y, w, h,
-			  EXA_PREPARE_SRC, FALSE);
-    swap(pExaScr, pScreen, GetImage);
-    pScreen->GetImage (pDrawable, x, y, w, h, format, planeMask, d);
-    swap(pExaScr, pScreen, GetImage);
-    exaFinishAccess (pDrawable, EXA_PREPARE_SRC);
-    EXA_POST_FALLBACK(pScreen);
-}
-
-void
-ExaCheckGetSpans (DrawablePtr pDrawable,
-		 int wMax,
-		 DDXPointPtr ppt,
-		 int *pwidth,
-		 int nspans,
-		 char *pdstStart)
-{
-    ScreenPtr pScreen = pDrawable->pScreen;
-
-    EXA_PRE_FALLBACK(pScreen);
-    EXA_FALLBACK(("from %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
-    exaPrepareAccess (pDrawable, EXA_PREPARE_SRC);
-    swap(pExaScr, pScreen, GetSpans);
-    pScreen->GetSpans (pDrawable, wMax, ppt, pwidth, nspans, pdstStart);
-    swap(pExaScr, pScreen, GetSpans);
-    exaFinishAccess (pDrawable, EXA_PREPARE_SRC);
-    EXA_POST_FALLBACK(pScreen);
-}
-
-static void
-ExaSrcValidate(DrawablePtr pDrawable,
-	       int x,
-	       int y,
-	       int width,
-	       int height)
-{
-    ScreenPtr pScreen = pDrawable->pScreen;
-    ExaScreenPriv(pScreen);
-    PixmapPtr pPix = exaGetDrawablePixmap (pDrawable);
-    BoxRec box;
-    RegionRec reg;
-    RegionPtr dst;
-    int xoff, yoff;
-
-    exaGetDrawableDeltas(pDrawable, pPix, &xoff, &yoff);
-
-    box.x1 = x + xoff;
-    box.y1 = y + yoff;
-    box.x2 = box.x1 + width;
-    box.y2 = box.y1 + height;
-
-    dst = (pExaScr->srcPix == pPix) ? &pExaScr->srcReg :
-	&pExaScr->maskReg;
-
-    REGION_INIT(pScreen, &reg, &box, 1);
-    REGION_UNION(pScreen, dst, dst, &reg);
-    REGION_UNINIT(pScreen, &reg);
-
-    if (pExaScr->SavedSourceValidate) {
-        swap(pExaScr, pScreen, SourceValidate);
-        pScreen->SourceValidate(pDrawable, x, y, width, height);
-        swap(pExaScr, pScreen, SourceValidate);
-    }
-}
-
-static Bool
-ExaPrepareCompositeReg(ScreenPtr  pScreen,
-		       CARD8      op,
-		       PicturePtr pSrc,
-		       PicturePtr pMask,
-		       PicturePtr pDst,
-		       INT16      xSrc,
-		       INT16      ySrc,
-		       INT16      xMask,
-		       INT16      yMask,
-		       INT16      xDst,
-		       INT16      yDst,
-		       CARD16     width,
-		       CARD16     height)
-{
-    RegionRec region;
-    RegionPtr dstReg = NULL;
-    RegionPtr srcReg = NULL;
-    RegionPtr maskReg = NULL;
-    PixmapPtr pSrcPix = NULL;
-    PixmapPtr pMaskPix = NULL;
-    PixmapPtr pDstPix;
-    ExaScreenPriv(pScreen);
-    Bool ret;
-
-
-    REGION_NULL(pScreen, &region);
-
-    if (pSrc->pDrawable) {
-	pSrcPix = exaGetDrawablePixmap(pSrc->pDrawable);
-	REGION_NULL(pScreen, &pExaScr->srcReg);
-	srcReg = &pExaScr->srcReg;
-	pExaScr->srcPix = pSrcPix;
-	if (pSrc != pDst)
-	    REGION_TRANSLATE(pScreen, pSrc->pCompositeClip,
-			     -pSrc->pDrawable->x,
-			     -pSrc->pDrawable->y);
-    }
-
-    if (pMask && pMask->pDrawable) {
-	pMaskPix = exaGetDrawablePixmap(pMask->pDrawable);
-	REGION_NULL(pScreen, &pExaScr->maskReg);
-	maskReg = &pExaScr->maskReg;
-	if (pMask != pDst && pMask != pSrc)
-	    REGION_TRANSLATE(pScreen, pMask->pCompositeClip,
-			     -pMask->pDrawable->x,
-			     -pMask->pDrawable->y);
-    }
-
-    REGION_TRANSLATE(pScreen, pDst->pCompositeClip,
-		     -pDst->pDrawable->x,
-		     -pDst->pDrawable->y);
-
-    pExaScr->SavedSourceValidate = ExaSrcValidate;
-    swap(pExaScr, pScreen, SourceValidate);
-    ret = miComputeCompositeRegion (&region, pSrc, pMask, pDst,
-				    xSrc, ySrc, xMask, yMask,
-				    xDst,
-				    yDst,
-				    width, height);
-    swap(pExaScr, pScreen, SourceValidate);
-
-    REGION_TRANSLATE(pScreen, pDst->pCompositeClip,
-		     pDst->pDrawable->x,
-		     pDst->pDrawable->y);
-    if (pSrc->pDrawable && pSrc != pDst)
-	REGION_TRANSLATE(pScreen, pSrc->pCompositeClip,
-			 pSrc->pDrawable->x,
-			 pSrc->pDrawable->y);
-    if (pMask && pMask->pDrawable && pMask != pDst && pMask != pSrc)
-	REGION_TRANSLATE(pScreen, pMask->pCompositeClip,
-			 pMask->pDrawable->x,
-			 pMask->pDrawable->y);
-
-    if (!ret) {
-	if (srcReg)
-	    REGION_UNINIT(pScreen, srcReg);
-	if (maskReg)
-	    REGION_UNINIT(pScreen, maskReg);
-
-	return FALSE;
-    }
-
-    /**
-     * Don't limit alphamaps readbacks for now until we've figured out how that
-     * should be done.
-     */
-
-    if (pSrc->alphaMap && pSrc->alphaMap->pDrawable)
-	pExaScr->prepare_access_reg(exaGetDrawablePixmap(pSrc->alphaMap->pDrawable),
-				    EXA_PREPARE_AUX_SRC,
-				    NULL);
-    if (pMask && pMask->alphaMap && pMask->alphaMap->pDrawable)
-	pExaScr->prepare_access_reg(exaGetDrawablePixmap(pMask->alphaMap->pDrawable),
-				    EXA_PREPARE_AUX_MASK,
-				    NULL);
-
-    if (pSrcPix)
-	pExaScr->prepare_access_reg(pSrcPix,
-				    EXA_PREPARE_SRC,
-				    srcReg);
-
-    if (pMaskPix)
-	pExaScr->prepare_access_reg(pMaskPix,
-				    EXA_PREPARE_MASK,
-				    maskReg);
-
-    if (srcReg)
-	REGION_UNINIT(pScreen, srcReg);
-    if (maskReg)
-	REGION_UNINIT(pScreen, maskReg);
-
-    pDstPix = exaGetDrawablePixmap(pDst->pDrawable);
-    if (!exaOpReadsDestination(op)) {
-	int xoff;
-	int yoff;
-
-	exaGetDrawableDeltas (pDst->pDrawable, pDstPix, &xoff, &yoff);
-	REGION_TRANSLATE(pScreen, &region, pDst->pDrawable->x + xoff,
-			 pDst->pDrawable->y + yoff);
-	dstReg = &region;
-    }
-
-    if (pDst->alphaMap && pDst->alphaMap->pDrawable)
-	pExaScr->prepare_access_reg(exaGetDrawablePixmap(pDst->alphaMap->pDrawable),
-				    EXA_PREPARE_AUX_DEST,
-				    dstReg);
-    pExaScr->prepare_access_reg(pDstPix, EXA_PREPARE_DEST, dstReg);
-
-    REGION_UNINIT(pScreen, &region);
-    return TRUE;
-}
-
-void
-ExaCheckComposite (CARD8      op,
-                   PicturePtr pSrc,
-                   PicturePtr pMask,
-                   PicturePtr pDst,
-                   INT16      xSrc,
-                   INT16      ySrc,
-                   INT16      xMask,
-                   INT16      yMask,
-                   INT16      xDst,
-                   INT16      yDst,
-                   CARD16     width,
-                   CARD16     height)
-{
-    ScreenPtr pScreen = pDst->pDrawable->pScreen;
-    PictureScreenPtr	ps = GetPictureScreen(pScreen);
-    EXA_PRE_FALLBACK(pScreen);
-
-    if (pExaScr->prepare_access_reg) {
-	if (!ExaPrepareCompositeReg(pScreen, op, pSrc, pMask, pDst, xSrc,
-				   ySrc, xMask, yMask, xDst, yDst, width,
-				   height))
-	    goto out_no_clip;
-    } else {
-
-	/* We need to prepare access to any separate alpha maps first,
-	 * in case the driver doesn't support EXA_PREPARE_AUX*,
-	 * in which case EXA_PREPARE_SRC may be used for moving them out.
-	 */
-
-	if (pSrc->alphaMap && pSrc->alphaMap->pDrawable)
-	    exaPrepareAccess(pSrc->alphaMap->pDrawable, EXA_PREPARE_AUX_SRC);
-	if (pMask && pMask->alphaMap && pMask->alphaMap->pDrawable)
-	    exaPrepareAccess(pMask->alphaMap->pDrawable, EXA_PREPARE_AUX_MASK);
-	if (pDst->alphaMap && pDst->alphaMap->pDrawable)
-	    exaPrepareAccess(pDst->alphaMap->pDrawable, EXA_PREPARE_AUX_DEST);
-
-	exaPrepareAccess (pDst->pDrawable, EXA_PREPARE_DEST);
-
-	EXA_FALLBACK(("from picts %p/%p to pict %p\n",
-		      pSrc, pMask, pDst));
-
-	if (pSrc->pDrawable != NULL)
-	    exaPrepareAccess (pSrc->pDrawable, EXA_PREPARE_SRC);
-	if (pMask && pMask->pDrawable != NULL)
-	    exaPrepareAccess (pMask->pDrawable, EXA_PREPARE_MASK);
-    }
-
-    swap(pExaScr, ps, Composite);
-    ps->Composite (op,
-                 pSrc,
-                 pMask,
-                 pDst,
-                 xSrc,
-                 ySrc,
-                 xMask,
-                 yMask,
-                 xDst,
-                 yDst,
-                 width,
-                 height);
-    swap(pExaScr, ps, Composite);
-    if (pMask && pMask->pDrawable != NULL)
-	exaFinishAccess (pMask->pDrawable, EXA_PREPARE_MASK);
-    if (pSrc->pDrawable != NULL)
-	exaFinishAccess (pSrc->pDrawable, EXA_PREPARE_SRC);
-    exaFinishAccess (pDst->pDrawable, EXA_PREPARE_DEST);
-    if (pDst->alphaMap && pDst->alphaMap->pDrawable)
-	exaFinishAccess(pDst->alphaMap->pDrawable, EXA_PREPARE_AUX_DEST);
-    if (pSrc->alphaMap && pSrc->alphaMap->pDrawable)
-	exaFinishAccess(pSrc->alphaMap->pDrawable, EXA_PREPARE_AUX_SRC);
-    if (pMask && pMask->alphaMap && pMask->alphaMap->pDrawable)
-	exaFinishAccess(pMask->alphaMap->pDrawable, EXA_PREPARE_AUX_MASK);
-
-out_no_clip:
-    EXA_POST_FALLBACK(pScreen);
-}
-
-void
-ExaCheckAddTraps (PicturePtr	pPicture,
-		  INT16		x_off,
-		  INT16		y_off,
-		  int		ntrap,
-		  xTrap		*traps)
-{
-    ScreenPtr pScreen = pPicture->pDrawable->pScreen;
-    PictureScreenPtr	ps = GetPictureScreen(pScreen);
-    EXA_PRE_FALLBACK(pScreen);
-
-    EXA_FALLBACK(("to pict %p (%c)\n",
-		  exaDrawableLocation(pPicture->pDrawable)));
-    exaPrepareAccess(pPicture->pDrawable, EXA_PREPARE_DEST);
-    swap(pExaScr, ps, AddTraps);
-    ps->AddTraps (pPicture, x_off, y_off, ntrap, traps);
-    swap(pExaScr, ps, AddTraps);
-    exaFinishAccess(pPicture->pDrawable, EXA_PREPARE_DEST);
-    EXA_POST_FALLBACK(pScreen);
-}
-
-/**
- * Gets the 0,0 pixel of a pixmap.  Used for doing solid fills of tiled pixmaps
- * that happen to be 1x1.  Pixmap must be at least 8bpp.
- */
-CARD32
-exaGetPixmapFirstPixel (PixmapPtr pPixmap)
-{
-    switch (pPixmap->drawable.bitsPerPixel) {
-    case 32:
-	{
-	    CARD32 pixel;
-
-	    pPixmap->drawable.pScreen->GetImage(&pPixmap->drawable, 0, 0, 1, 1,
-						ZPixmap, ~0, (char*)&pixel);
-	    return pixel;
-	}
-    case 16:
-	{
-	    CARD16 pixel;
-
-	    pPixmap->drawable.pScreen->GetImage(&pPixmap->drawable, 0, 0, 1, 1,
-						ZPixmap, ~0, (char*)&pixel);
-	    return pixel;
-	}
-    case 8:
-	{
-	    CARD8 pixel;
-
-	    pPixmap->drawable.pScreen->GetImage(&pPixmap->drawable, 0, 0, 1, 1,
-						ZPixmap, ~0, (char*)&pixel);
-	    return pixel;
-	}
-    default:
-	FatalError("%s called for invalid bpp %d\n", __func__,
-		   pPixmap->drawable.bitsPerPixel);
-    }
-}
+/*

+ *

+ * Copyright © 1999 Keith Packard

+ *

+ * 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.

+ */

+

+#include "exa_priv.h"

+

+#include "mipict.h"

+

+/*

+ * These functions wrap the low-level fb rendering functions and

+ * synchronize framebuffer/accelerated drawing by stalling until

+ * the accelerator is idle

+ */

+

+/**

+ * Calls exaPrepareAccess with EXA_PREPARE_SRC for the tile, if that is the

+ * current fill style.

+ *

+ * Solid doesn't use an extra pixmap source, and Stippled/OpaqueStippled are

+ * 1bpp and never in fb, so we don't worry about them.

+ * We should worry about them for completeness sake and going forward.

+ */

+void

+exaPrepareAccessGC(GCPtr pGC)

+{

+    if (pGC->stipple)

+        exaPrepareAccess(&pGC->stipple->drawable, EXA_PREPARE_MASK);

+    if (pGC->fillStyle == FillTiled)

+	exaPrepareAccess(&pGC->tile.pixmap->drawable, EXA_PREPARE_SRC);

+}

+

+/**

+ * Finishes access to the tile in the GC, if used.

+ */

+void

+exaFinishAccessGC(GCPtr pGC)

+{

+    if (pGC->fillStyle == FillTiled)

+	exaFinishAccess(&pGC->tile.pixmap->drawable, EXA_PREPARE_SRC);

+    if (pGC->stipple)

+        exaFinishAccess(&pGC->stipple->drawable, EXA_PREPARE_MASK);

+}

+

+#if DEBUG_TRACE_FALL

+char

+exaDrawableLocation(DrawablePtr pDrawable)

+{

+    return exaDrawableIsOffscreen(pDrawable) ? 's' : 'm';

+}

+#endif /* DEBUG_TRACE_FALL */

+

+void

+ExaCheckFillSpans (DrawablePtr pDrawable, GCPtr pGC, int nspans,

+		   DDXPointPtr ppt, int *pwidth, int fSorted)

+{

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));

+    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);

+    exaPrepareAccessGC (pGC);

+    pGC->ops->FillSpans (pDrawable, pGC, nspans, ppt, pwidth, fSorted);

+    exaFinishAccessGC (pGC);

+    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+}

+

+void

+ExaCheckSetSpans (DrawablePtr pDrawable, GCPtr pGC, char *psrc,

+		 DDXPointPtr ppt, int *pwidth, int nspans, int fSorted)

+{

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));

+    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);

+    pGC->ops->SetSpans (pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted);

+    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+}

+

+void

+ExaCheckPutImage (DrawablePtr pDrawable, GCPtr pGC, int depth,

+		 int x, int y, int w, int h, int leftPad, int format,

+		 char *bits)

+{

+    PixmapPtr pPixmap = exaGetDrawablePixmap(pDrawable);

+    ExaPixmapPriv(pPixmap);

+

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));

+    if (!pExaScr->prepare_access_reg || !pExaPixmap->pDamage ||

+	exaGCReadsDestination(pDrawable, pGC->planemask, pGC->fillStyle,

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

+	exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);

+    else

+	pExaScr->prepare_access_reg(pPixmap, EXA_PREPARE_DEST,

+				    DamagePendingRegion(pExaPixmap->pDamage));

+    pGC->ops->PutImage (pDrawable, pGC, depth, x, y, w, h, leftPad, format, bits);

+    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+}

+

+void

+ExaCheckCopyNtoN (DrawablePtr pSrc, DrawablePtr pDst,  GCPtr pGC,

+	     BoxPtr	pbox, int nbox, int dx, int dy, Bool	reverse, 

+	     Bool upsidedown, Pixel bitplane, void *closure)

+{

+    RegionRec reg;

+    int xoff, yoff;

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pSrc, pDst,

+		  exaDrawableLocation(pSrc), exaDrawableLocation(pDst)));

+

+    if (pExaScr->prepare_access_reg) {

+	PixmapPtr pPixmap = exaGetDrawablePixmap(pSrc);

+

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

+	REGION_INIT(pScreen, &reg, pbox, nbox);

+	REGION_TRANSLATE(pScreen, &reg, xoff + dx, yoff + dy);

+	pExaScr->prepare_access_reg(pPixmap, EXA_PREPARE_SRC, &reg);

+	REGION_UNINIT(pScreen, &reg);

+    } else

+	exaPrepareAccess (pSrc, EXA_PREPARE_SRC);

+

+    if (pExaScr->prepare_access_reg &&

+	!exaGCReadsDestination(pDst, pGC->planemask, pGC->fillStyle,

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

+	PixmapPtr pPixmap = exaGetDrawablePixmap(pDst);

+

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

+	REGION_INIT(pScreen, &reg, pbox, nbox);

+	REGION_TRANSLATE(pScreen, &reg, xoff, yoff);

+	pExaScr->prepare_access_reg(pPixmap, EXA_PREPARE_DEST, &reg);

+	REGION_UNINIT(pScreen, &reg);

+    } else

+	exaPrepareAccess (pDst, EXA_PREPARE_DEST);

+

+    /* This will eventually call fbCopyNtoN, with some calculation overhead. */

+    while (nbox--) {

+	pGC->ops->CopyArea (pSrc, pDst, pGC, pbox->x1 - pSrc->x + dx, pbox->y1 - pSrc->y + dy, 

+			pbox->x2 - pbox->x1, pbox->y2 - pbox->y1, pbox->x1 - pDst->x, pbox->y1 - pDst->y);

+	pbox++;

+    }

+    exaFinishAccess (pSrc, EXA_PREPARE_SRC);

+    exaFinishAccess (pDst, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+}

+

+static void

+ExaFallbackPrepareReg(DrawablePtr pDrawable,

+		      GCPtr pGC,

+		      int x, int y, int width, int height,

+		      int index, Bool checkReads)

+{

+    ScreenPtr pScreen = pDrawable->pScreen;

+    ExaScreenPriv(pScreen);

+

+    if (pExaScr->prepare_access_reg &&

+	!(checkReads && exaGCReadsDestination(pDrawable,

+					      pGC->planemask,

+					      pGC->fillStyle,

+					      pGC->alu,

+					      pGC->clientClipType))) {

+	BoxRec box;

+	RegionRec reg;

+	int xoff, yoff;

+	PixmapPtr pPixmap = exaGetDrawablePixmap(pDrawable);

+

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

+	box.x1 = pDrawable->x + x + xoff;

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

+	box.x2 = box.x1 + width;

+	box.y2 = box.y1 + height;

+

+	REGION_INIT(pScreen, &reg, &box, 1);

+	pExaScr->prepare_access_reg(pPixmap, index, &reg);

+	REGION_UNINIT(pScreen, &reg);

+    } else

+	exaPrepareAccess(pDrawable, index);

+}

+

+

+RegionPtr

+ExaCheckCopyArea (DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC,

+		 int srcx, int srcy, int w, int h, int dstx, int dsty)

+{

+    RegionPtr ret;

+

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pSrc, pDst,

+		  exaDrawableLocation(pSrc), exaDrawableLocation(pDst)));

+    ExaFallbackPrepareReg(pSrc, pGC, srcx, srcy, w, h,

+			  EXA_PREPARE_SRC, FALSE);

+    ExaFallbackPrepareReg(pDst, pGC, dstx, dsty, w, h,

+			  EXA_PREPARE_DEST, TRUE);

+    ret = pGC->ops->CopyArea (pSrc, pDst, pGC, srcx, srcy, w, h, dstx, dsty);

+    exaFinishAccess (pSrc, EXA_PREPARE_SRC);

+    exaFinishAccess (pDst, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+

+    return ret;

+}

+

+RegionPtr

+ExaCheckCopyPlane (DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC,

+		  int srcx, int srcy, int w, int h, int dstx, int dsty,

+		  unsigned long bitPlane)

+{

+    RegionPtr ret;

+

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pSrc, pDst,

+		  exaDrawableLocation(pSrc), exaDrawableLocation(pDst)));

+    ExaFallbackPrepareReg(pSrc, pGC, srcx, srcy, w, h,

+			  EXA_PREPARE_SRC, FALSE);

+    ExaFallbackPrepareReg(pDst, pGC, dstx, dsty, w, h,

+			  EXA_PREPARE_DEST, TRUE);

+    ret = pGC->ops->CopyPlane (pSrc, pDst, pGC, srcx, srcy, w, h, dstx, dsty,

+		       bitPlane);

+    exaFinishAccess (pSrc, EXA_PREPARE_SRC);

+    exaFinishAccess (pDst, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+

+    return ret;

+}

+

+void

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

+		  DDXPointPtr pptInit)

+{

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));

+    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);

+    pGC->ops->PolyPoint (pDrawable, pGC, mode, npt, pptInit);

+    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+}

+

+void

+ExaCheckPolylines (DrawablePtr pDrawable, GCPtr pGC,

+		  int mode, int npt, DDXPointPtr ppt)

+{

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("to %p (%c), width %d, mode %d, count %d\n",

+		  pDrawable, exaDrawableLocation(pDrawable),

+		  pGC->lineWidth, mode, npt));

+

+    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);

+    exaPrepareAccessGC (pGC);

+    pGC->ops->Polylines (pDrawable, pGC, mode, npt, ppt);

+    exaFinishAccessGC (pGC);

+    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+}

+

+void

+ExaCheckPolySegment (DrawablePtr pDrawable, GCPtr pGC,

+		    int nsegInit, xSegment *pSegInit)

+{

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("to %p (%c) width %d, count %d\n", pDrawable,

+		  exaDrawableLocation(pDrawable), pGC->lineWidth, nsegInit));

+

+    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);

+    exaPrepareAccessGC (pGC);

+    pGC->ops->PolySegment (pDrawable, pGC, nsegInit, pSegInit);

+    exaFinishAccessGC (pGC);

+    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+}

+

+void

+ExaCheckPolyArc (DrawablePtr pDrawable, GCPtr pGC,

+		int narcs, xArc *pArcs)

+{

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));

+

+    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);

+    exaPrepareAccessGC (pGC);

+    pGC->ops->PolyArc (pDrawable, pGC, narcs, pArcs);

+    exaFinishAccessGC (pGC);

+    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+}

+

+void

+ExaCheckPolyFillRect (DrawablePtr pDrawable, GCPtr pGC,

+		     int nrect, xRectangle *prect)

+{

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));

+

+    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);

+    exaPrepareAccessGC (pGC);

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

+    exaFinishAccessGC (pGC);

+    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+}

+

+void

+ExaCheckImageGlyphBlt (DrawablePtr pDrawable, GCPtr pGC,

+		      int x, int y, unsigned int nglyph,

+		      CharInfoPtr *ppci, pointer pglyphBase)

+{

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("to %p (%c)\n", pDrawable,

+		  exaDrawableLocation(pDrawable)));

+    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);

+    exaPrepareAccessGC (pGC);

+    pGC->ops->ImageGlyphBlt (pDrawable, pGC, x, y, nglyph, ppci, pglyphBase);

+    exaFinishAccessGC (pGC);

+    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+}

+

+void

+ExaCheckPolyGlyphBlt (DrawablePtr pDrawable, GCPtr pGC,

+		     int x, int y, unsigned int nglyph,

+		     CharInfoPtr *ppci, pointer pglyphBase)

+{

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("to %p (%c), style %d alu %d\n", pDrawable,

+		  exaDrawableLocation(pDrawable), pGC->fillStyle, pGC->alu));

+    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);

+    exaPrepareAccessGC (pGC);

+    pGC->ops->PolyGlyphBlt (pDrawable, pGC, x, y, nglyph, ppci, pglyphBase);

+    exaFinishAccessGC (pGC);

+    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+}

+

+void

+ExaCheckPushPixels (GCPtr pGC, PixmapPtr pBitmap,

+		   DrawablePtr pDrawable,

+		   int w, int h, int x, int y)

+{

+    EXA_PRE_FALLBACK_GC(pGC);

+    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pBitmap, pDrawable,

+		  exaDrawableLocation(&pBitmap->drawable),

+		  exaDrawableLocation(pDrawable)));

+    ExaFallbackPrepareReg(pDrawable, pGC, x, y, w, h,

+			  EXA_PREPARE_DEST, TRUE);

+    ExaFallbackPrepareReg(&pBitmap->drawable, pGC, 0, 0, w, h,

+			  EXA_PREPARE_SRC, FALSE);

+    exaPrepareAccessGC (pGC);

+    pGC->ops->PushPixels (pGC, pBitmap, pDrawable, w, h, x, y);

+    exaFinishAccessGC (pGC);

+    exaFinishAccess (&pBitmap->drawable, EXA_PREPARE_SRC);

+    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK_GC(pGC);

+}

+

+void

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

+{

+    DrawablePtr pDrawable = &pWin->drawable;

+    ScreenPtr pScreen = pDrawable->pScreen;

+    EXA_PRE_FALLBACK(pScreen);

+    EXA_FALLBACK(("from %p\n", pWin));

+

+    /* Only need the source bits, the destination region will be overwritten */

+    if (pExaScr->prepare_access_reg) {

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

+	int xoff, yoff;

+

+	exaGetDrawableDeltas(&pWin->drawable, pPixmap, &xoff, &yoff);

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

+	pExaScr->prepare_access_reg(pPixmap, EXA_PREPARE_SRC, prgnSrc);

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

+    } else

+	exaPrepareAccess(pDrawable, EXA_PREPARE_SRC);

+

+    swap(pExaScr, pScreen, CopyWindow);

+    pScreen->CopyWindow (pWin, ptOldOrg, prgnSrc);

+    swap(pExaScr, pScreen, CopyWindow);

+    exaFinishAccess (pDrawable, EXA_PREPARE_SRC);

+    EXA_POST_FALLBACK(pScreen);

+}

+

+void

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

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

+{

+    ScreenPtr pScreen = pDrawable->pScreen;

+    EXA_PRE_FALLBACK(pScreen);

+    EXA_FALLBACK(("from %p (%c)\n", pDrawable,

+		  exaDrawableLocation(pDrawable)));

+

+    ExaFallbackPrepareReg(pDrawable, NULL, x, y, w, h,

+			  EXA_PREPARE_SRC, FALSE);

+    swap(pExaScr, pScreen, GetImage);

+    pScreen->GetImage (pDrawable, x, y, w, h, format, planeMask, d);

+    swap(pExaScr, pScreen, GetImage);

+    exaFinishAccess (pDrawable, EXA_PREPARE_SRC);

+    EXA_POST_FALLBACK(pScreen);

+}

+

+void

+ExaCheckGetSpans (DrawablePtr pDrawable,

+		 int wMax,

+		 DDXPointPtr ppt,

+		 int *pwidth,

+		 int nspans,

+		 char *pdstStart)

+{

+    ScreenPtr pScreen = pDrawable->pScreen;

+

+    EXA_PRE_FALLBACK(pScreen);

+    EXA_FALLBACK(("from %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));

+    exaPrepareAccess (pDrawable, EXA_PREPARE_SRC);

+    swap(pExaScr, pScreen, GetSpans);

+    pScreen->GetSpans (pDrawable, wMax, ppt, pwidth, nspans, pdstStart);

+    swap(pExaScr, pScreen, GetSpans);

+    exaFinishAccess (pDrawable, EXA_PREPARE_SRC);

+    EXA_POST_FALLBACK(pScreen);

+}

+

+static void

+ExaSrcValidate(DrawablePtr pDrawable,

+	       int x,

+	       int y,

+	       int width,

+	       int height)

+{

+    ScreenPtr pScreen = pDrawable->pScreen;

+    ExaScreenPriv(pScreen);

+    PixmapPtr pPix = exaGetDrawablePixmap (pDrawable);

+    BoxRec box;

+    RegionRec reg;

+    RegionPtr dst;

+    int xoff, yoff;

+

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

+

+    box.x1 = x + xoff;

+    box.y1 = y + yoff;

+    box.x2 = box.x1 + width;

+    box.y2 = box.y1 + height;

+

+    dst = (pExaScr->srcPix == pPix) ? &pExaScr->srcReg :

+	&pExaScr->maskReg;

+

+    REGION_INIT(pScreen, &reg, &box, 1);

+    REGION_UNION(pScreen, dst, dst, &reg);

+    REGION_UNINIT(pScreen, &reg);

+

+    if (pExaScr->SavedSourceValidate) {

+        swap(pExaScr, pScreen, SourceValidate);

+        pScreen->SourceValidate(pDrawable, x, y, width, height);

+        swap(pExaScr, pScreen, SourceValidate);

+    }

+}

+

+static Bool

+ExaPrepareCompositeReg(ScreenPtr  pScreen,

+		       CARD8      op,

+		       PicturePtr pSrc,

+		       PicturePtr pMask,

+		       PicturePtr pDst,

+		       INT16      xSrc,

+		       INT16      ySrc,

+		       INT16      xMask,

+		       INT16      yMask,

+		       INT16      xDst,

+		       INT16      yDst,

+		       CARD16     width,

+		       CARD16     height)

+{

+    RegionRec region;

+    RegionPtr dstReg = NULL;

+    RegionPtr srcReg = NULL;

+    RegionPtr maskReg = NULL;

+    PixmapPtr pSrcPix = NULL;

+    PixmapPtr pMaskPix = NULL;

+    PixmapPtr pDstPix;

+    ExaScreenPriv(pScreen);

+    Bool ret;

+

+

+    REGION_NULL(pScreen, &region);

+

+    if (pSrc->pDrawable) {

+	pSrcPix = exaGetDrawablePixmap(pSrc->pDrawable);

+	REGION_NULL(pScreen, &pExaScr->srcReg);

+	srcReg = &pExaScr->srcReg;

+	pExaScr->srcPix = pSrcPix;

+	if (pSrc != pDst)

+	    REGION_TRANSLATE(pScreen, pSrc->pCompositeClip,

+			     -pSrc->pDrawable->x,

+			     -pSrc->pDrawable->y);

+    }

+

+    if (pMask && pMask->pDrawable) {

+	pMaskPix = exaGetDrawablePixmap(pMask->pDrawable);

+	REGION_NULL(pScreen, &pExaScr->maskReg);

+	maskReg = &pExaScr->maskReg;

+	if (pMask != pDst && pMask != pSrc)

+	    REGION_TRANSLATE(pScreen, pMask->pCompositeClip,

+			     -pMask->pDrawable->x,

+			     -pMask->pDrawable->y);

+    }

+

+    REGION_TRANSLATE(pScreen, pDst->pCompositeClip,

+		     -pDst->pDrawable->x,

+		     -pDst->pDrawable->y);

+

+    pExaScr->SavedSourceValidate = ExaSrcValidate;

+    swap(pExaScr, pScreen, SourceValidate);

+    ret = miComputeCompositeRegion (&region, pSrc, pMask, pDst,

+				    xSrc, ySrc, xMask, yMask,

+				    xDst,

+				    yDst,

+				    width, height);

+    swap(pExaScr, pScreen, SourceValidate);

+

+    REGION_TRANSLATE(pScreen, pDst->pCompositeClip,

+		     pDst->pDrawable->x,

+		     pDst->pDrawable->y);

+    if (pSrc->pDrawable && pSrc != pDst)

+	REGION_TRANSLATE(pScreen, pSrc->pCompositeClip,

+			 pSrc->pDrawable->x,

+			 pSrc->pDrawable->y);

+    if (pMask && pMask->pDrawable && pMask != pDst && pMask != pSrc)

+	REGION_TRANSLATE(pScreen, pMask->pCompositeClip,

+			 pMask->pDrawable->x,

+			 pMask->pDrawable->y);

+

+    if (!ret) {

+	if (srcReg)

+	    REGION_UNINIT(pScreen, srcReg);

+	if (maskReg)

+	    REGION_UNINIT(pScreen, maskReg);

+

+	return FALSE;

+    }

+

+    /**

+     * Don't limit alphamaps readbacks for now until we've figured out how that

+     * should be done.

+     */

+

+    if (pSrc->alphaMap && pSrc->alphaMap->pDrawable)

+	pExaScr->prepare_access_reg(exaGetDrawablePixmap(pSrc->alphaMap->pDrawable),

+				    EXA_PREPARE_AUX_SRC,

+				    NULL);

+    if (pMask && pMask->alphaMap && pMask->alphaMap->pDrawable)

+	pExaScr->prepare_access_reg(exaGetDrawablePixmap(pMask->alphaMap->pDrawable),

+				    EXA_PREPARE_AUX_MASK,

+				    NULL);

+

+    if (pSrcPix)

+	pExaScr->prepare_access_reg(pSrcPix,

+				    EXA_PREPARE_SRC,

+				    srcReg);

+

+    if (pMaskPix)

+	pExaScr->prepare_access_reg(pMaskPix,

+				    EXA_PREPARE_MASK,

+				    maskReg);

+

+    if (srcReg)

+	REGION_UNINIT(pScreen, srcReg);

+    if (maskReg)

+	REGION_UNINIT(pScreen, maskReg);

+

+    pDstPix = exaGetDrawablePixmap(pDst->pDrawable);

+    if (!exaOpReadsDestination(op)) {

+	int xoff;

+	int yoff;

+

+	exaGetDrawableDeltas (pDst->pDrawable, pDstPix, &xoff, &yoff);

+	REGION_TRANSLATE(pScreen, &region, pDst->pDrawable->x + xoff,

+			 pDst->pDrawable->y + yoff);

+	dstReg = &region;

+    }

+

+    if (pDst->alphaMap && pDst->alphaMap->pDrawable)

+	pExaScr->prepare_access_reg(exaGetDrawablePixmap(pDst->alphaMap->pDrawable),

+				    EXA_PREPARE_AUX_DEST,

+				    dstReg);

+    pExaScr->prepare_access_reg(pDstPix, EXA_PREPARE_DEST, dstReg);

+

+    REGION_UNINIT(pScreen, &region);

+    return TRUE;

+}

+

+void

+ExaCheckComposite (CARD8      op,

+                   PicturePtr pSrc,

+                   PicturePtr pMask,

+                   PicturePtr pDst,

+                   INT16      xSrc,

+                   INT16      ySrc,

+                   INT16      xMask,

+                   INT16      yMask,

+                   INT16      xDst,

+                   INT16      yDst,

+                   CARD16     width,

+                   CARD16     height)

+{

+    ScreenPtr pScreen = pDst->pDrawable->pScreen;

+    PictureScreenPtr	ps = GetPictureScreen(pScreen);

+    EXA_PRE_FALLBACK(pScreen);

+

+    if (pExaScr->prepare_access_reg) {

+	if (!ExaPrepareCompositeReg(pScreen, op, pSrc, pMask, pDst, xSrc,

+				   ySrc, xMask, yMask, xDst, yDst, width,

+				   height))

+	    goto out_no_clip;

+    } else {

+

+	/* We need to prepare access to any separate alpha maps first,

+	 * in case the driver doesn't support EXA_PREPARE_AUX*,

+	 * in which case EXA_PREPARE_SRC may be used for moving them out.

+	 */

+

+	if (pSrc->alphaMap && pSrc->alphaMap->pDrawable)

+	    exaPrepareAccess(pSrc->alphaMap->pDrawable, EXA_PREPARE_AUX_SRC);

+	if (pMask && pMask->alphaMap && pMask->alphaMap->pDrawable)

+	    exaPrepareAccess(pMask->alphaMap->pDrawable, EXA_PREPARE_AUX_MASK);

+	if (pDst->alphaMap && pDst->alphaMap->pDrawable)

+	    exaPrepareAccess(pDst->alphaMap->pDrawable, EXA_PREPARE_AUX_DEST);

+

+	exaPrepareAccess (pDst->pDrawable, EXA_PREPARE_DEST);

+

+	EXA_FALLBACK(("from picts %p/%p to pict %p\n",

+		      pSrc, pMask, pDst));

+

+	if (pSrc->pDrawable != NULL)

+	    exaPrepareAccess (pSrc->pDrawable, EXA_PREPARE_SRC);

+	if (pMask && pMask->pDrawable != NULL)

+	    exaPrepareAccess (pMask->pDrawable, EXA_PREPARE_MASK);

+    }

+

+    swap(pExaScr, ps, Composite);

+    ps->Composite (op,

+                 pSrc,

+                 pMask,

+                 pDst,

+                 xSrc,

+                 ySrc,

+                 xMask,

+                 yMask,

+                 xDst,

+                 yDst,

+                 width,

+                 height);

+    swap(pExaScr, ps, Composite);

+    if (pMask && pMask->pDrawable != NULL)

+	exaFinishAccess (pMask->pDrawable, EXA_PREPARE_MASK);

+    if (pSrc->pDrawable != NULL)

+	exaFinishAccess (pSrc->pDrawable, EXA_PREPARE_SRC);

+    exaFinishAccess (pDst->pDrawable, EXA_PREPARE_DEST);

+    if (pDst->alphaMap && pDst->alphaMap->pDrawable)

+	exaFinishAccess(pDst->alphaMap->pDrawable, EXA_PREPARE_AUX_DEST);

+    if (pSrc->alphaMap && pSrc->alphaMap->pDrawable)

+	exaFinishAccess(pSrc->alphaMap->pDrawable, EXA_PREPARE_AUX_SRC);

+    if (pMask && pMask->alphaMap && pMask->alphaMap->pDrawable)

+	exaFinishAccess(pMask->alphaMap->pDrawable, EXA_PREPARE_AUX_MASK);

+

+out_no_clip:

+    EXA_POST_FALLBACK(pScreen);

+}

+

+/**

+ * Avoid migration ping-pong when using a mask.

+ */

+void

+ExaCheckGlyphs (CARD8	      op,

+		PicturePtr    pSrc,

+		PicturePtr    pDst,

+		PictFormatPtr maskFormat,

+		INT16	      xSrc,

+		INT16	      ySrc,

+		int	      nlist,

+		GlyphListPtr  list,

+		GlyphPtr      *glyphs)

+{

+    ScreenPtr pScreen = pDst->pDrawable->pScreen;

+    EXA_PRE_FALLBACK(pScreen);

+

+    miGlyphs(op, pSrc, pDst, maskFormat, xSrc, ySrc, nlist, list, glyphs);

+

+    EXA_POST_FALLBACK(pScreen);

+}

+

+void

+ExaCheckAddTraps (PicturePtr	pPicture,

+		  INT16		x_off,

+		  INT16		y_off,

+		  int		ntrap,

+		  xTrap		*traps)

+{

+    ScreenPtr pScreen = pPicture->pDrawable->pScreen;

+    PictureScreenPtr	ps = GetPictureScreen(pScreen);

+    EXA_PRE_FALLBACK(pScreen);

+

+    EXA_FALLBACK(("to pict %p (%c)\n",

+		  exaDrawableLocation(pPicture->pDrawable)));

+    exaPrepareAccess(pPicture->pDrawable, EXA_PREPARE_DEST);

+    swap(pExaScr, ps, AddTraps);

+    ps->AddTraps (pPicture, x_off, y_off, ntrap, traps);

+    swap(pExaScr, ps, AddTraps);

+    exaFinishAccess(pPicture->pDrawable, EXA_PREPARE_DEST);

+    EXA_POST_FALLBACK(pScreen);

+}

+

+/**

+ * Gets the 0,0 pixel of a pixmap.  Used for doing solid fills of tiled pixmaps

+ * that happen to be 1x1.  Pixmap must be at least 8bpp.

+ */

+CARD32

+exaGetPixmapFirstPixel (PixmapPtr pPixmap)

+{

+    switch (pPixmap->drawable.bitsPerPixel) {

+    case 32:

+	{

+	    CARD32 pixel;

+

+	    pPixmap->drawable.pScreen->GetImage(&pPixmap->drawable, 0, 0, 1, 1,

+						ZPixmap, ~0, (char*)&pixel);

+	    return pixel;

+	}

+    case 16:

+	{

+	    CARD16 pixel;

+

+	    pPixmap->drawable.pScreen->GetImage(&pPixmap->drawable, 0, 0, 1, 1,

+						ZPixmap, ~0, (char*)&pixel);

+	    return pixel;

+	}

+    case 8:

+	{

+	    CARD8 pixel;

+

+	    pPixmap->drawable.pScreen->GetImage(&pPixmap->drawable, 0, 0, 1, 1,

+						ZPixmap, ~0, (char*)&pixel);

+	    return pixel;

+	}

+    default:

+	FatalError("%s called for invalid bpp %d\n", __func__,

+		   pPixmap->drawable.bitsPerPixel);

+    }

+}