R6.6 is the Xorg base-lineXORG-MAIN

1 files changed, 759 insertions, 0 deletions

diff --git a/cfb/cfbbitblt.c b/cfb/cfbbitblt.c
new file mode 100644
index 000000000..3afe4eb81
--- /dev/null
+++ b/cfb/cfbbitblt.c
@@ -0,0 +1,759 @@
+/*
+ * cfb copy area
+ */
+
+/*
+
+Copyright 1989, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+Author: Keith Packard
+
+*/
+/* $Xorg: cfbbitblt.c,v 1.4 2001/02/09 02:04:37 xorgcvs Exp $ */
+
+#include	"X.h"
+#include	"Xmd.h"
+#include	"Xproto.h"
+#include	"gcstruct.h"
+#include	"windowstr.h"
+#include	"scrnintstr.h"
+#include	"pixmapstr.h"
+#include	"regionstr.h"
+#include	"cfb.h"
+#include	"cfbmskbits.h"
+#include	"cfb8bit.h"
+#include	"fastblt.h"
+#define MFB_CONSTS_ONLY
+#include	"maskbits.h"
+
+RegionPtr
+cfbBitBlt (pSrcDrawable, pDstDrawable,
+            pGC, srcx, srcy, width, height, dstx, dsty, doBitBlt, bitPlane)
+    register DrawablePtr pSrcDrawable;
+    register DrawablePtr pDstDrawable;
+    GC *pGC;
+    int srcx, srcy;
+    int width, height;
+    int dstx, dsty;
+    void (*doBitBlt)();
+    unsigned long bitPlane;
+{
+    RegionPtr prgnSrcClip;	/* may be a new region, or just a copy */
+    Bool freeSrcClip = FALSE;
+
+    RegionPtr prgnExposed;
+    RegionRec rgnDst;
+    DDXPointPtr pptSrc;
+    register DDXPointPtr ppt;
+    register BoxPtr pbox;
+    int i;
+    register int dx;
+    register int dy;
+    xRectangle origSource;
+    DDXPointRec origDest;
+    int numRects;
+    BoxRec fastBox;
+    int fastClip = 0;		/* for fast clipping with pixmap source */
+    int fastExpose = 0;		/* for fast exposures with pixmap source */
+
+    origSource.x = srcx;
+    origSource.y = srcy;
+    origSource.width = width;
+    origSource.height = height;
+    origDest.x = dstx;
+    origDest.y = dsty;
+
+    if ((pSrcDrawable != pDstDrawable) &&
+	pSrcDrawable->pScreen->SourceValidate)
+    {
+	(*pSrcDrawable->pScreen->SourceValidate) (pSrcDrawable, srcx, srcy, width, height);
+    }
+
+    srcx += pSrcDrawable->x;
+    srcy += pSrcDrawable->y;
+
+    /* clip the source */
+
+    if (pSrcDrawable->type == DRAWABLE_PIXMAP)
+    {
+	if ((pSrcDrawable == pDstDrawable) &&
+	    (pGC->clientClipType == CT_NONE))
+	{
+	    prgnSrcClip = cfbGetCompositeClip(pGC);
+	}
+	else
+	{
+	    fastClip = 1;
+	}
+    }
+    else
+    {
+	if (pGC->subWindowMode == IncludeInferiors)
+	{
+	    if (!((WindowPtr) pSrcDrawable)->parent)
+	    {
+		/*
+		 * special case bitblt from root window in
+		 * IncludeInferiors mode; just like from a pixmap
+		 */
+		fastClip = 1;
+	    }
+	    else if ((pSrcDrawable == pDstDrawable) &&
+		(pGC->clientClipType == CT_NONE))
+	    {
+		prgnSrcClip = cfbGetCompositeClip(pGC);
+	    }
+	    else
+	    {
+		prgnSrcClip = NotClippedByChildren((WindowPtr)pSrcDrawable);
+		freeSrcClip = TRUE;
+	    }
+	}
+	else
+	{
+	    prgnSrcClip = &((WindowPtr)pSrcDrawable)->clipList;
+	}
+    }
+
+    fastBox.x1 = srcx;
+    fastBox.y1 = srcy;
+    fastBox.x2 = srcx + width;
+    fastBox.y2 = srcy + height;
+
+    /* Don't create a source region if we are doing a fast clip */
+    if (fastClip)
+    {
+	fastExpose = 1;
+	/*
+	 * clip the source; if regions extend beyond the source size,
+ 	 * make sure exposure events get sent
+	 */
+	if (fastBox.x1 < pSrcDrawable->x)
+	{
+	    fastBox.x1 = pSrcDrawable->x;
+	    fastExpose = 0;
+	}
+	if (fastBox.y1 < pSrcDrawable->y)
+	{
+	    fastBox.y1 = pSrcDrawable->y;
+	    fastExpose = 0;
+	}
+	if (fastBox.x2 > pSrcDrawable->x + (int) pSrcDrawable->width)
+	{
+	    fastBox.x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
+	    fastExpose = 0;
+	}
+	if (fastBox.y2 > pSrcDrawable->y + (int) pSrcDrawable->height)
+	{
+	    fastBox.y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
+	    fastExpose = 0;
+	}
+    }
+    else
+    {
+	REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
+	REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst, prgnSrcClip);
+    }
+
+    dstx += pDstDrawable->x;
+    dsty += pDstDrawable->y;
+
+    if (pDstDrawable->type == DRAWABLE_WINDOW)
+    {
+	if (!((WindowPtr)pDstDrawable)->realized)
+	{
+	    if (!fastClip)
+		REGION_UNINIT(pGC->pScreen, &rgnDst);
+	    if (freeSrcClip)
+		REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+	    return NULL;
+	}
+    }
+
+    dx = srcx - dstx;
+    dy = srcy - dsty;
+
+    /* Translate and clip the dst to the destination composite clip */
+    if (fastClip)
+    {
+	RegionPtr cclip;
+
+        /* Translate the region directly */
+        fastBox.x1 -= dx;
+        fastBox.x2 -= dx;
+        fastBox.y1 -= dy;
+        fastBox.y2 -= dy;
+
+	/* If the destination composite clip is one rectangle we can
+	   do the clip directly.  Otherwise we have to create a full
+	   blown region and call intersect */
+
+	/* XXX because CopyPlane uses this routine for 8-to-1 bit
+	 * copies, this next line *must* also correctly fetch the
+	 * composite clip from an mfb gc
+	 */
+
+	cclip = cfbGetCompositeClip(pGC);
+        if (REGION_NUM_RECTS(cclip) == 1)
+        {
+	    BoxPtr pBox = REGION_RECTS(cclip);
+
+	    if (fastBox.x1 < pBox->x1) fastBox.x1 = pBox->x1;
+	    if (fastBox.x2 > pBox->x2) fastBox.x2 = pBox->x2;
+	    if (fastBox.y1 < pBox->y1) fastBox.y1 = pBox->y1;
+	    if (fastBox.y2 > pBox->y2) fastBox.y2 = pBox->y2;
+
+	    /* Check to see if the region is empty */
+	    if (fastBox.x1 >= fastBox.x2 || fastBox.y1 >= fastBox.y2)
+	    {
+		REGION_INIT(pGC->pScreen, &rgnDst, NullBox, 0);
+	    }
+	    else
+	    {
+		REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
+	    }
+	}
+        else
+	{
+	    /* We must turn off fastClip now, since we must create
+	       a full blown region.  It is intersected with the
+	       composite clip below. */
+	    fastClip = 0;
+	    REGION_INIT(pGC->pScreen, &rgnDst, &fastBox,1);
+	}
+    }
+    else
+    {
+        REGION_TRANSLATE(pGC->pScreen, &rgnDst, -dx, -dy);
+    }
+
+    if (!fastClip)
+    {
+	REGION_INTERSECT(pGC->pScreen, &rgnDst,
+				   &rgnDst,
+				   cfbGetCompositeClip(pGC));
+    }
+
+    /* Do bit blitting */
+    numRects = REGION_NUM_RECTS(&rgnDst);
+    if (numRects && width && height)
+    {
+	if(!(pptSrc = (DDXPointPtr)ALLOCATE_LOCAL(numRects *
+						  sizeof(DDXPointRec))))
+	{
+	    REGION_UNINIT(pGC->pScreen, &rgnDst);
+	    if (freeSrcClip)
+		REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+	    return NULL;
+	}
+	pbox = REGION_RECTS(&rgnDst);
+	ppt = pptSrc;
+	for (i = numRects; --i >= 0; pbox++, ppt++)
+	{
+	    ppt->x = pbox->x1 + dx;
+	    ppt->y = pbox->y1 + dy;
+	}
+
+	(*doBitBlt) (pSrcDrawable, pDstDrawable, pGC->alu, &rgnDst, pptSrc, pGC->planemask, bitPlane);
+	DEALLOCATE_LOCAL(pptSrc);
+    }
+
+    prgnExposed = NULL;
+    if ( cfbGetGCPrivate(pGC)->fExpose)
+    {
+	extern RegionPtr    miHandleExposures();
+
+        /* Pixmap sources generate a NoExposed (we return NULL to do this) */
+        if (!fastExpose)
+	    prgnExposed =
+		miHandleExposures(pSrcDrawable, pDstDrawable, pGC,
+				  origSource.x, origSource.y,
+				  (int)origSource.width,
+				  (int)origSource.height,
+				  origDest.x, origDest.y, bitPlane);
+    }
+    REGION_UNINIT(pGC->pScreen, &rgnDst);
+    if (freeSrcClip)
+	REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+    return prgnExposed;
+}
+
+
+void
+cfbDoBitblt (pSrc, pDst, alu, prgnDst, pptSrc, planemask)
+    DrawablePtr	    pSrc, pDst;
+    int		    alu;
+    RegionPtr	    prgnDst;
+    DDXPointPtr	    pptSrc;
+    unsigned long   planemask;
+{
+    void (*blt)() = cfbDoBitbltGeneral;
+    if ((planemask & PMSK) == PMSK) {
+	switch (alu) {
+	case GXcopy:
+	    blt = cfbDoBitbltCopy;
+	    break;
+	case GXxor:
+	    blt = cfbDoBitbltXor;
+	    break;
+	case GXor:
+	    blt = cfbDoBitbltOr;
+	    break;
+	}
+    }
+    (*blt) (pSrc, pDst, alu, prgnDst, pptSrc, planemask);
+}
+
+RegionPtr
+cfbCopyArea(pSrcDrawable, pDstDrawable,
+            pGC, srcx, srcy, width, height, dstx, dsty)
+    register DrawablePtr pSrcDrawable;
+    register DrawablePtr pDstDrawable;
+    GC *pGC;
+    int srcx, srcy;
+    int width, height;
+    int dstx, dsty;
+{
+    void (*doBitBlt) ();
+    
+    doBitBlt = cfbDoBitbltCopy;
+    if (pGC->alu != GXcopy || (pGC->planemask & PMSK) != PMSK)
+    {
+	doBitBlt = cfbDoBitbltGeneral;
+	if ((pGC->planemask & PMSK) == PMSK)
+	{
+	    switch (pGC->alu) {
+	    case GXxor:
+		doBitBlt = cfbDoBitbltXor;
+		break;
+	    case GXor:
+		doBitBlt = cfbDoBitbltOr;
+		break;
+	    }
+	}
+    }
+    return cfbBitBlt (pSrcDrawable, pDstDrawable,
+            pGC, srcx, srcy, width, height, dstx, dsty, doBitBlt, 0L);
+}
+
+#if PSZ == 8
+void
+cfbCopyPlane1to8 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc, planemask, bitPlane)
+    DrawablePtr pSrcDrawable;	/* must be a bitmap */
+    DrawablePtr pDstDrawable;	/* must be depth 8 drawable */
+    int	rop;		/* not used; caller must call cfb8CheckOpaqueStipple
+			 * beforehand to get cfb8StippleRRop set correctly */
+    unsigned long planemask;	/* to apply to destination writes */
+    RegionPtr prgnDst;		/* region in destination to draw to;
+				 * screen relative coords. if dest is a window;
+				 * drawable relative if dest is a pixmap */
+    DDXPointPtr pptSrc;		/* drawable relative src coords to copy from;
+				 * must be one point for each box in prgnDst */
+    unsigned long   bitPlane;	/* not used; assumed always to be 1 */
+{
+    int	srcx, srcy;	/* upper left corner of box being copied in source */
+    int dstx, dsty;	/* upper left corner of box being copied in dest */
+    int width, height;	/* in pixels, unpadded, of box being copied */
+    int xoffSrc; /* bit # in leftmost word of row from which copying starts */
+    int xoffDst; /* byte # in leftmost word of row from which copying starts */
+    unsigned long *psrcBase, *pdstBase; /* start of drawable's pixel data */
+    int	widthSrc;    /* # of groups of 32 pixels (1 bit/pixel) in src bitmap*/
+    int widthDst;    /* # of groups of 4 pixels (8 bits/pixel) in dst */
+    unsigned long *psrcLine, *pdstLine; /* steps a row at a time thru src/dst; 
+					 * may point into middle of row */
+    register unsigned long *psrc, *pdst; /* steps within the row */
+    register unsigned long bits, tmp;	 /* bits from source */
+    register int leftShift;
+    register int rightShift;
+    unsigned long startmask;		/* left edge pixel mask */
+    unsigned long endmask;		/* right edge pixel mask */
+    register int nlMiddle;   /* number of words in middle of the row to draw */
+    register int nl;
+    int firstoff;
+    int secondoff;
+    unsigned long src;
+    int nbox;		/* number of boxes in region to copy */
+    BoxPtr  pbox;	/* steps thru boxes in region */
+    int pixelsRemainingOnRightEdge; /* # pixels to be drawn on a row after
+				     * the main "middle" loop */
+
+    cfbGetLongWidthAndPointer (pSrcDrawable, widthSrc, psrcBase)
+    cfbGetLongWidthAndPointer (pDstDrawable, widthDst, pdstBase)
+
+    nbox = REGION_NUM_RECTS(prgnDst);
+    pbox = REGION_RECTS(prgnDst);
+    while (nbox--)
+    {
+	dstx = pbox->x1;
+	dsty = pbox->y1;
+	srcx = pptSrc->x;
+	srcy = pptSrc->y;
+	width = pbox->x2 - pbox->x1;
+	height = pbox->y2 - pbox->y1;
+	pbox++;
+	pptSrc++;
+
+	psrcLine = psrcBase + srcy * widthSrc + (srcx >> MFB_PWSH);
+	pdstLine = pdstBase + dsty * widthDst + (dstx >> PWSH);
+	xoffSrc = srcx & MFB_PIM; /* finds starting bit in src */
+	xoffDst = dstx & PIM;  /* finds starting byte in dst */
+
+	/* compute startmask, endmask, nlMiddle */
+
+	if (xoffDst + width < PPW) /* XXX should this be '<= PPW' ? */
+	{ /* the copy only affects one word per row in destination */
+	    maskpartialbits(dstx, width, startmask);
+	    endmask = 0;  /* nothing on right edge */
+	    nlMiddle = 0; /* nothing in middle */
+	}
+	else
+	{ /* the copy will affect multiple words per row in destination */
+	    maskbits(dstx, width, startmask, endmask, nlMiddle);
+	}
+
+	/*
+	 * compute constants for the first four bits to be
+	 * copied.  This avoids troubles with partial first
+	 * writes, and difficult shift computation
+	 */
+	if (startmask)
+	{
+	    firstoff = xoffSrc - xoffDst;
+	    if (firstoff > (MFB_PPW-PPW))
+		secondoff = MFB_PPW - firstoff;
+	    if (xoffDst)
+	    {
+	    	srcx += (PPW-xoffDst);
+	    	xoffSrc = srcx & MFB_PIM;
+	    }
+	}
+	leftShift = xoffSrc;
+	rightShift = MFB_PPW - leftShift;
+
+	pixelsRemainingOnRightEdge = (nlMiddle & 7) * PPW +
+	    				((dstx + width) & PIM);
+
+	/* setup is done; now let's move some bits */
+
+	/* caller must call cfb8CheckOpaqueStipple before this function
+	 * to set cfb8StippleRRop!
+	 */
+
+	if (cfb8StippleRRop == GXcopy)
+	{
+	    while (height--)
+	    { /* one iteration of this loop copies one row */
+	    	psrc = psrcLine;
+	    	pdst = pdstLine;
+	    	psrcLine += widthSrc;
+	    	pdstLine += widthDst;
+	    	bits = *psrc++;
+	    	if (startmask)
+	    	{
+		    if (firstoff < 0)
+		    	tmp = BitRight (bits, -firstoff);
+		    else
+		    {
+		    	tmp = BitLeft (bits, firstoff);
+			/*
+			 * need a more cautious test for partialmask
+			 * case...
+			 */
+		    	if (firstoff >= (MFB_PPW-PPW))
+		    	{
+			    bits = *psrc++;
+			    if (firstoff != (MFB_PPW-PPW))
+				tmp |= BitRight (bits, secondoff);
+		    	}
+		    }
+		    *pdst = (*pdst & ~startmask) | (GetPixelGroup(tmp) & startmask);
+		    pdst++;
+	    	}
+	    	nl = nlMiddle;
+	    	while (nl >= 8)
+	    	{
+		    nl -= 8;
+		    tmp = BitLeft(bits, leftShift);
+		    bits = *psrc++;
+		    if (rightShift != MFB_PPW)
+		    	tmp |= BitRight(bits, rightShift);
+
+#ifdef FAST_CONSTANT_OFFSET_MODE
+# define StorePixels(pdst,o,pixels)	(pdst)[o] = (pixels)
+# define EndStep(pdst,o)		(pdst) += (o)
+# define StoreRopPixels(pdst,o,and,xor)	(pdst)[o] = DoRRop((pdst)[o],and,xor);
+#else
+# define StorePixels(pdst,o,pixels)	*(pdst)++ = (pixels)
+# define EndStep(pdst,o)
+# define StoreRopPixels(pdst,o,and,xor)	*(pdst) = DoRRop(*(pdst),and,xor); (pdst)++;
+#endif
+
+#define Step(c)			NextBitGroup(c);
+#define StoreBitsPlain(o,c)	StorePixels(pdst,o,GetPixelGroup(c))
+#define StoreRopBitsPlain(o,c)	StoreRopPixels(pdst,o,\
+					cfb8StippleAnd[GetBitGroup(c)], \
+					cfb8StippleXor[GetBitGroup(c)])
+#define StoreBits0(c)		StoreBitsPlain(0,c)
+#define StoreRopBits0(c)	StoreRopBitsPlain(0,c)
+
+#if (BITMAP_BIT_ORDER == MSBFirst)
+# define StoreBits(o,c)	StoreBitsPlain(o,c)
+# define StoreRopBits(o,c)  StoreRopBitsPlain(o,c)
+# define FirstStep(c)	Step(c)
+#else /* BITMAP_BIT_ORDER == LSBFirst */
+#if PGSZ == 64
+# define StoreBits(o,c)	StorePixels(pdst,o, (cfb8Pixels[c & 0xff]))
+# define StoreRopBits(o,c)  StoreRopPixels(pdst,o, \
+    (cfb8StippleAnd[c & 0xff]), \
+    (cfb8StippleXor[c & 0xff]))
+# define FirstStep(c)	c = BitLeft (c, 8);
+#else
+/* 0x3c is 0xf << 2 (4 bits, long word) */
+# define StoreBits(o,c)	StorePixels(pdst,o,*((unsigned long *)\
+			    (((char *) cfb8Pixels) + (c & 0x3c))))
+# define StoreRopBits(o,c)  StoreRopPixels(pdst,o, \
+    *((unsigned long *) (((char *) cfb8StippleAnd) + (c & 0x3c))), \
+    *((unsigned long *) (((char *) cfb8StippleXor) + (c & 0x3c))))
+# define FirstStep(c)	c = BitLeft (c, 2);
+#endif /* PGSZ */
+#endif /* BITMAP_BIT_ORDER */
+
+		    StoreBits0(tmp);	FirstStep(tmp);
+		    StoreBits(1,tmp);	Step(tmp);
+		    StoreBits(2,tmp);	Step(tmp);
+		    StoreBits(3,tmp);	Step(tmp);
+		    StoreBits(4,tmp);	Step(tmp);
+		    StoreBits(5,tmp);	Step(tmp);
+		    StoreBits(6,tmp);	Step(tmp);
+		    StoreBits(7,tmp);   EndStep (pdst,8);
+	    	}
+
+		/* do rest of middle and partial word on right edge */
+
+	    	if (pixelsRemainingOnRightEdge)
+	    	{
+		    tmp = BitLeft(bits, leftShift);
+
+		    if (pixelsRemainingOnRightEdge > rightShift)
+		    {
+		    	bits = *psrc++;
+		    	tmp |= BitRight (bits, rightShift);
+		    }
+		    EndStep (pdst, nl);
+		    switch (nl)
+		    {
+		    case 7:
+			StoreBitsPlain(-7,tmp);	Step(tmp);
+		    case 6:
+			StoreBitsPlain(-6,tmp);	Step(tmp);
+		    case 5:
+			StoreBitsPlain(-5,tmp);	Step(tmp);
+		    case 4:
+			StoreBitsPlain(-4,tmp);	Step(tmp);
+		    case 3:
+			StoreBitsPlain(-3,tmp);	Step(tmp);
+		    case 2:
+			StoreBitsPlain(-2,tmp);	Step(tmp);
+		    case 1:
+			StoreBitsPlain(-1,tmp);	Step(tmp);
+		    }
+		    if (endmask)
+		    	*pdst = (*pdst & ~endmask) | (GetPixelGroup(tmp) & endmask);
+	    	}
+	    }
+	}
+	else /* cfb8StippleRRop != GXcopy */
+	{
+	    while (height--)
+	    { /* one iteration of this loop copies one row */
+	    	psrc = psrcLine;
+	    	pdst = pdstLine;
+	    	psrcLine += widthSrc;
+	    	pdstLine += widthDst;
+	    	bits = *psrc++;
+
+		/* do partial word on left edge */
+
+	    	if (startmask)
+	    	{
+		    if (firstoff < 0)
+		    	tmp = BitRight (bits, -firstoff);
+		    else
+		    {
+		    	tmp = BitLeft (bits, firstoff);
+		    	if (firstoff >= (MFB_PPW-PPW))
+		    	{
+			    bits = *psrc++;
+			    if (firstoff != (MFB_PPW-PPW))
+				tmp |= BitRight (bits, secondoff);
+		    	}
+		    }
+		    src = GetBitGroup(tmp);
+		    *pdst = MaskRRopPixels (*pdst, src, startmask);
+		    pdst++;
+	    	}
+
+		/* do middle of row */
+
+	    	nl = nlMiddle;
+		while (nl >= 8)
+		{
+		    nl -= 8;
+		    tmp = BitLeft(bits, leftShift);
+		    bits = *psrc++;
+		    if (rightShift != MFB_PPW)
+			tmp |= BitRight(bits, rightShift);
+		    StoreRopBits0(tmp);		FirstStep(tmp);
+		    StoreRopBits(1,tmp);	Step(tmp);
+		    StoreRopBits(2,tmp);	Step(tmp);
+		    StoreRopBits(3,tmp);	Step(tmp);
+		    StoreRopBits(4,tmp);	Step(tmp);
+		    StoreRopBits(5,tmp);	Step(tmp);
+		    StoreRopBits(6,tmp);	Step(tmp);
+		    StoreRopBits(7,tmp);	EndStep(pdst,8);
+		}
+
+		/* do rest of middle and partial word on right edge */
+
+	    	if (pixelsRemainingOnRightEdge)
+	    	{
+		    tmp = BitLeft(bits, leftShift);
+
+		    if (pixelsRemainingOnRightEdge > rightShift)
+		    {
+		    	bits = *psrc++; /* XXX purify abr here */
+		    	tmp |= BitRight (bits, rightShift);
+		    }
+		    while (nl--)
+		    {
+			src = GetBitGroup (tmp);
+			*pdst = RRopPixels (*pdst, src);
+		    	pdst++;
+			NextBitGroup(tmp);
+		    }
+		    if (endmask)
+		    {
+			src = GetBitGroup (tmp);
+			*pdst = MaskRRopPixels (*pdst, src, endmask);
+		    }
+	    	}
+	    } /* end copy one row */
+	} /* end alu is non-copy-mode case */
+    } /* end iteration over region boxes */
+}
+
+#endif
+
+/* shared among all different cfb depths through linker magic */
+RegionPtr   (*cfbPuntCopyPlane)();
+
+RegionPtr cfbCopyPlane(pSrcDrawable, pDstDrawable,
+	    pGC, srcx, srcy, width, height, dstx, dsty, bitPlane)
+    DrawablePtr 	pSrcDrawable;
+    DrawablePtr		pDstDrawable;
+    GCPtr		pGC;
+    int 		srcx, srcy;
+    int 		width, height;
+    int 		dstx, dsty;
+    unsigned long	bitPlane;
+{
+    RegionPtr	ret;
+    extern RegionPtr    miHandleExposures();
+    void		(*doBitBlt)();
+
+#if PSZ == 8
+
+    if (pSrcDrawable->bitsPerPixel == 1 && pDstDrawable->bitsPerPixel == 8)
+    {
+    	if (bitPlane == 1)
+	{
+       	    doBitBlt = cfbCopyPlane1to8;
+	    cfb8CheckOpaqueStipple (pGC->alu,
+				    pGC->fgPixel, pGC->bgPixel,
+				    pGC->planemask);
+    	    ret = cfbBitBlt (pSrcDrawable, pDstDrawable,
+	    	    pGC, srcx, srcy, width, height, dstx, dsty, doBitBlt, bitPlane);
+	}
+	else
+	    ret = miHandleExposures (pSrcDrawable, pDstDrawable,
+	    	pGC, srcx, srcy, width, height, dstx, dsty, bitPlane);
+    }
+    else if (pSrcDrawable->bitsPerPixel == 8 && pDstDrawable->bitsPerPixel == 1)
+    {
+	extern	int InverseAlu[16];
+	int oldalu;
+
+	oldalu = pGC->alu;
+    	if ((pGC->fgPixel & 1) == 0 && (pGC->bgPixel&1) == 1)
+	    pGC->alu = InverseAlu[pGC->alu];
+    	else if ((pGC->fgPixel & 1) == (pGC->bgPixel & 1))
+	    pGC->alu = mfbReduceRop(pGC->alu, pGC->fgPixel);
+	ret = cfbBitBlt (pSrcDrawable, pDstDrawable,
+			 pGC, srcx, srcy, width, height, dstx, dsty, 
+			 cfbCopyPlane8to1, bitPlane);
+	pGC->alu = oldalu;
+    }
+    else if (pSrcDrawable->bitsPerPixel == 8 && pDstDrawable->bitsPerPixel == 8)
+    {
+	PixmapPtr	pBitmap;
+	ScreenPtr	pScreen = pSrcDrawable->pScreen;
+	GCPtr		pGC1;
+
+	pBitmap = (*pScreen->CreatePixmap) (pScreen, width, height, 1);
+	if (!pBitmap)
+	    return NULL;
+	pGC1 = GetScratchGC (1, pScreen);
+	if (!pGC1)
+	{
+	    (*pScreen->DestroyPixmap) (pBitmap);
+	    return NULL;
+	}
+	/*
+	 * don't need to set pGC->fgPixel,bgPixel as copyPlane8to1
+	 * ignores pixel values, expecting the rop to "do the
+	 * right thing", which GXcopy will.
+	 */
+	ValidateGC ((DrawablePtr) pBitmap, pGC1);
+	/* no exposures here, scratch GC's don't get graphics expose */
+	(void) cfbBitBlt (pSrcDrawable, (DrawablePtr) pBitmap,
+			  pGC1, srcx, srcy, width, height, 0, 0, 
+			  cfbCopyPlane8to1, bitPlane);
+	cfb8CheckOpaqueStipple (pGC->alu,
+				pGC->fgPixel, pGC->bgPixel,
+				pGC->planemask);
+	/* no exposures here, copy bits from inside a pixmap */
+	(void) cfbBitBlt ((DrawablePtr) pBitmap, pDstDrawable, pGC,
+			    0, 0, width, height, dstx, dsty, cfbCopyPlane1to8, 1);
+	FreeScratchGC (pGC1);
+	(*pScreen->DestroyPixmap) (pBitmap);
+	/* compute resultant exposures */
+	ret = miHandleExposures (pSrcDrawable, pDstDrawable, pGC,
+				 srcx, srcy, width, height,
+				 dstx, dsty, bitPlane);
+    }
+    else
+#endif
+    ret = (*cfbPuntCopyPlane) (pSrcDrawable, pDstDrawable,
+	    pGC, srcx, srcy, width, height, dstx, dsty, bitPlane);
+    return ret;
+}