R6.6 is the Xorg base-lineXORG-MAIN

1 files changed, 280 insertions, 0 deletions

diff --git a/cfb/cfbsetsp.c b/cfb/cfbsetsp.c
new file mode 100644
index 000000000..4a3d2fbfe
--- /dev/null
+++ b/cfb/cfbsetsp.c
@@ -0,0 +1,280 @@
+/* $Xorg: cfbsetsp.c,v 1.4 2001/02/09 02:04:38 xorgcvs Exp $ */
+/***********************************************************
+
+Copyright 1987, 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.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, 
+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 Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.  
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL 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 "X.h"
+#include "Xmd.h"
+#include "servermd.h"
+
+#include "misc.h"
+#include "regionstr.h"
+#include "gcstruct.h"
+#include "windowstr.h"
+#include "pixmapstr.h"
+#include "scrnintstr.h"
+
+#include "cfb.h"
+#include "cfbmskbits.h"
+#include <mergerop.h>
+
+/* cfbSetScanline -- copies the bits from psrc to the drawable starting at
+ * (xStart, y) and continuing to (xEnd, y).  xOrigin tells us where psrc 
+ * starts on the scanline. (I.e., if this scanline passes through multiple
+ * boxes, we may not want to start grabbing bits at psrc but at some offset
+ * further on.) 
+ */
+cfbSetScanline(y, xOrigin, xStart, xEnd, psrc, alu, pdstBase, widthDst, planemask)
+    int			y;
+    int			xOrigin;	/* where this scanline starts */
+    int			xStart;		/* first bit to use from scanline */
+    int			xEnd;		/* last bit to use from scanline + 1 */
+    register unsigned int *psrc;
+    register int	alu;		/* raster op */
+    int			*pdstBase;	/* start of the drawable */
+    int			widthDst;	/* width of drawable in words */
+    unsigned long	planemask;
+{
+    int			w;		/* width of scanline in bits */
+    register int	*pdst;		/* where to put the bits */
+    register int	tmpSrc;		/* scratch buffer to collect bits in */
+    int			dstBit;		/* offset in bits from beginning of 
+					 * word */
+    register int	nstart; 	/* number of bits from first partial */
+    register int	nend; 		/* " " last partial word */
+    int			offSrc;
+    int		startmask, endmask, nlMiddle, nl;
+    DeclareMergeRop()
+
+    InitializeMergeRop(alu,planemask);
+    pdst = pdstBase + (y * widthDst) + (xStart >> PWSH); 
+    psrc += (xStart - xOrigin) >> PWSH;
+    offSrc = (xStart - xOrigin) & PIM;
+    w = xEnd - xStart;
+    dstBit = xStart & PIM;
+
+    if (dstBit + w <= PPW) 
+    { 
+	maskpartialbits(dstBit, w, startmask);
+	endmask = 0;
+	nlMiddle = 0;
+    } 
+    else 
+    { 
+	maskbits(xStart, w, startmask, endmask, nlMiddle);
+    }
+    if (startmask) 
+	nstart = PPW - dstBit; 
+    else 
+	nstart = 0; 
+    if (endmask) 
+	nend = xEnd & PIM; 
+    else 
+	nend = 0; 
+    if (startmask) 
+    { 
+	getbits(psrc, offSrc, nstart, tmpSrc);
+	putbitsmropshort(tmpSrc, dstBit, nstart, pdst);
+	pdst++; 
+	offSrc += nstart;
+	if (offSrc > PLST)
+	{
+	    psrc++;
+	    offSrc -= PPW;
+	}
+    } 
+    nl = nlMiddle; 
+    while (nl--) 
+    { 
+	getbits(psrc, offSrc, PPW, tmpSrc);
+	*pdst = DoMergeRop(tmpSrc, *pdst);
+	pdst++; 
+	psrc++; 
+    } 
+    if (endmask) 
+    { 
+	getbits(psrc, offSrc, nend, tmpSrc);
+	putbitsmropshort(tmpSrc, 0, nend, pdst);
+    } 
+}
+
+
+
+/* SetSpans -- for each span copy pwidth[i] bits from psrc to pDrawable at
+ * ppt[i] using the raster op from the GC.  If fSorted is TRUE, the scanlines
+ * are in increasing Y order.
+ * Source bit lines are server scanline padded so that they always begin
+ * on a word boundary.
+ */ 
+void
+cfbSetSpans(pDrawable, pGC, pcharsrc, ppt, pwidth, nspans, fSorted)
+    DrawablePtr		pDrawable;
+    GCPtr		pGC;
+    char		*pcharsrc;
+    register DDXPointPtr ppt;
+    int			*pwidth;
+    int			nspans;
+    int			fSorted;
+{
+    unsigned int	*psrc = (unsigned int *)pcharsrc;
+    unsigned long	*pdstBase;	/* start of dst bitmap */
+    int 		widthDst;	/* width of bitmap in words */
+    register BoxPtr 	pbox, pboxLast, pboxTest;
+    register DDXPointPtr pptLast;
+    int 		alu;
+    RegionPtr 		prgnDst;
+    int			xStart, xEnd;
+    int			yMax;
+
+    alu = pGC->alu;
+    prgnDst = cfbGetCompositeClip(pGC);
+    pptLast = ppt + nspans;
+
+    cfbGetLongWidthAndPointer (pDrawable, widthDst, pdstBase)
+
+    yMax = (int) pDrawable->y + (int) pDrawable->height;
+
+    pbox = REGION_RECTS(prgnDst);
+    pboxLast = pbox + REGION_NUM_RECTS(prgnDst);
+
+    if(fSorted)
+    {
+    /* scan lines sorted in ascending order. Because they are sorted, we
+     * don't have to check each scanline against each clip box.  We can be
+     * sure that this scanline only has to be clipped to boxes at or after the
+     * beginning of this y-band 
+     */
+	pboxTest = pbox;
+	while(ppt < pptLast)
+	{
+	    pbox = pboxTest;
+	    if(ppt->y >= yMax)
+		break;
+	    while(pbox < pboxLast)
+	    {
+		if(pbox->y1 > ppt->y)
+		{
+		    /* scanline is before clip box */
+		    break;
+		}
+		else if(pbox->y2 <= ppt->y)
+		{
+		    /* clip box is before scanline */
+		    pboxTest = ++pbox;
+		    continue;
+		}
+		else if(pbox->x1 > ppt->x + *pwidth) 
+		{
+		    /* clip box is to right of scanline */
+		    break;
+		}
+		else if(pbox->x2 <= ppt->x)
+		{
+		    /* scanline is to right of clip box */
+		    pbox++;
+		    continue;
+		}
+
+		/* at least some of the scanline is in the current clip box */
+		xStart = max(pbox->x1, ppt->x);
+		xEnd = min(ppt->x + *pwidth, pbox->x2);
+		cfbSetScanline(ppt->y, ppt->x, xStart, xEnd, psrc, alu,
+		    (int *)pdstBase, widthDst, pGC->planemask);
+		if(ppt->x + *pwidth <= pbox->x2)
+		{
+		    /* End of the line, as it were */
+		    break;
+		}
+		else
+		    pbox++;
+	    }
+	    /* We've tried this line against every box; it must be outside them
+	     * all.  move on to the next point */
+	    ppt++;
+	    psrc += PixmapWidthInPadUnits(*pwidth, pDrawable->depth);
+	    pwidth++;
+	}
+    }
+    else
+    {
+    /* scan lines not sorted. We must clip each line against all the boxes */
+	while(ppt < pptLast)
+	{
+	    if(ppt->y >= 0 && ppt->y < yMax)
+	    {
+		
+		for(pbox = REGION_RECTS(prgnDst); pbox< pboxLast; pbox++)
+		{
+		    if(pbox->y1 > ppt->y)
+		    {
+			/* rest of clip region is above this scanline,
+			 * skip it */
+			break;
+		    }
+		    if(pbox->y2 <= ppt->y)
+		    {
+			/* clip box is below scanline */
+			pbox++;
+			break;
+		    }
+		    if(pbox->x1 <= ppt->x + *pwidth &&
+		       pbox->x2 > ppt->x)
+		    {
+			xStart = max(pbox->x1, ppt->x);
+			xEnd = min(pbox->x2, ppt->x + *pwidth);
+			cfbSetScanline(ppt->y, ppt->x, xStart, xEnd, psrc, alu,
+			    (int *)pdstBase, widthDst, pGC->planemask);
+		    }
+
+		}
+	    }
+	psrc += PixmapWidthInPadUnits(*pwidth, pDrawable->depth);
+	ppt++;
+	pwidth++;
+	}
+    }
+}
+