R6.6 is the Xorg base-line

1 files changed, 154 insertions, 0 deletions

diff --git a/mfb/mfbgetsp.c b/mfb/mfbgetsp.c
new file mode 100644
index 000000000..9e0a5b513
--- /dev/null
+++ b/mfb/mfbgetsp.c
@@ -0,0 +1,154 @@
+/* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */
+/***********************************************************
+
+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.
+
+******************************************************************/
+/* $Xorg: mfbgetsp.c,v 1.4 2001/02/09 02:05:19 xorgcvs Exp $ */
+#include "X.h"
+#include "Xmd.h"
+
+#include "misc.h"
+#include "region.h"
+#include "gc.h"
+#include "windowstr.h"
+#include "pixmapstr.h"
+#include "scrnintstr.h"
+
+#include "mfb.h"
+#include "maskbits.h"
+
+#include "servermd.h"
+
+/* GetSpans -- for each span, gets bits from drawable starting at ppt[i]
+ * and continuing for pwidth[i] bits
+ * Each scanline returned will be server scanline padded, i.e., it will come
+ * out to an integral number of words.
+ */
+/*ARGSUSED*/
+void
+mfbGetSpans(pDrawable, wMax, ppt, pwidth, nspans, pchardstStart)
+    DrawablePtr		pDrawable;	/* drawable from which to get bits */
+    int			wMax;		/* largest value of all *pwidths */
+    register DDXPointPtr ppt;		/* points to start copying from */
+    int			*pwidth;	/* list of number of bits to copy */
+    int			nspans;		/* number of scanlines to copy */
+    char		*pchardstStart;	/* where to put the bits */
+{
+    PixelType		*pdstStart = (PixelType *)pchardstStart;
+    register PixelType	*pdst;	/* where to put the bits */
+    register PixelType	*psrc;	/* where to get the bits */
+    register PixelType	tmpSrc;	/* scratch buffer for bits */
+    PixelType		*psrcBase;	/* start of src bitmap */
+    int			widthSrc;	/* width of pixmap in bytes */
+    register DDXPointPtr pptLast;	/* one past last point to get */
+    int         	xEnd;		/* last pixel to copy from */
+    register int	nstart; 
+    int	 		nend; 
+    int	 		srcStartOver; 
+    PixelType 		startmask, endmask;
+    unsigned int	srcBit;
+    int	 		nlMiddle, nl;
+    int			w;
+  
+    pptLast = ppt + nspans;
+
+    mfbGetPixelWidthAndPointer(pDrawable, widthSrc, psrcBase);
+    pdst = pdstStart;
+
+    while(ppt < pptLast)
+    {
+	/* XXX should this really be << PWSH, or * 8, or * PGSZB? */
+	xEnd = min(ppt->x + *pwidth, widthSrc << PWSH);
+	pwidth++;
+	psrc = mfbScanline(psrcBase, ppt->x, ppt->y, widthSrc);
+	w = xEnd - ppt->x;
+	srcBit = ppt->x & PIM;
+
+	if (srcBit + w <= PPW) 
+	{ 
+	    getandputbits0(psrc, srcBit, w, pdst);
+	    pdst++;
+	} 
+	else 
+	{ 
+
+	    maskbits(ppt->x, w, startmask, endmask, nlMiddle);
+	    if (startmask) 
+		nstart = PPW - srcBit; 
+	    else 
+		nstart = 0; 
+	    if (endmask) 
+		nend = xEnd & PIM; 
+	    srcStartOver = srcBit + nstart > PLST;
+	    if (startmask) 
+	    { 
+		getandputbits0(psrc, srcBit, nstart, pdst);
+		if(srcStartOver)
+		    psrc++;
+	    } 
+	    nl = nlMiddle; 
+#ifdef FASTPUTBITS
+	    Duff(nl, putbits(*psrc, nstart, PPW, pdst); psrc++; pdst++;);
+#else
+	    while (nl--) 
+	    { 
+		tmpSrc = *psrc;
+		putbits(tmpSrc, nstart, PPW, pdst);
+		psrc++;
+		pdst++;
+	    } 
+#endif
+	    if (endmask) 
+	    { 
+		putbits(*psrc, nstart, nend, pdst);
+		if(nstart + nend > PPW)
+		    pdst++;
+	    } 
+	    if (startmask || endmask)
+		pdst++; 
+	} 
+        ppt++;
+    }
+}