From: CSRG <csrg@ucbvax.Berkeley.EDU>
Date: Sun, 29 Dec 1991 11:14:48 +0000 (-0800)
Subject: BSD 4_4_Lite2 development
X-Git-Tag: BSD-4_4_Lite2~2479
X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/commitdiff_plain/1ff7fd65d8ed122f3625fe5b39c66cc3c4136a67

BSD 4_4_Lite2 development
Work on file usr/src/contrib/X11R5-hp300/mit/server/ddx/hpbsd/mfb/mfbgetsp.c

Synthesized-from: CSRG/cd3/4.4BSD-Lite2
---

diff --git a/usr/src/contrib/X11R5-hp300/mit/server/ddx/hpbsd/mfb/mfbgetsp.c b/usr/src/contrib/X11R5-hp300/mit/server/ddx/hpbsd/mfb/mfbgetsp.c
new file mode 100644
index 0000000000..2b5b6c485d
--- /dev/null
+++ b/usr/src/contrib/X11R5-hp300/mit/server/ddx/hpbsd/mfb/mfbgetsp.c
@@ -0,0 +1,137 @@
+/* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */
+/***********************************************************
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
+and the Massachusetts Institute of Technology, Cambridge, 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 names of Digital or MIT 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.
+
+******************************************************************/
+/* $XConsortium: mfbgetsp.c,v 5.5 89/09/14 16:26:46 rws 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, pdstStart)
+    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 */
+    unsigned int	*pdstStart;	/* where to put the bits */
+{
+    register unsigned int	*pdst;	/* where to put the bits */
+    register unsigned int	*psrc;	/* where to get the bits */
+    register unsigned int	tmpSrc;	/* scratch buffer for bits */
+    unsigned int		*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; 
+    int	 		startmask, endmask, nlMiddle, nl, srcBit;
+    int			w;
+  
+    pptLast = ppt + nspans;
+
+    if (pDrawable->type == DRAWABLE_WINDOW)
+    {
+	psrcBase = (unsigned int *) getPrivScreenPtr(pDrawable->pScreen)->bits;
+	widthSrc = (int) getPrivScreenPtr(pDrawable->pScreen)->stride;
+    }
+    else
+    {
+	psrcBase = (unsigned int *) getPrivPixmapPtr(pDrawable)->bits;
+	widthSrc = (int) getPrivPixmapPtr(pDrawable)->stride;
+    }
+    pdst = pdstStart;
+
+    while(ppt < pptLast)
+    {
+	xEnd = min(ppt->x + *pwidth, widthSrc << 3);
+	pwidth++;
+	psrc = psrcBase + (ppt->y * (widthSrc >> 2)) + (ppt->x >> 5); 
+	w = xEnd - ppt->x;
+	srcBit = ppt->x & 0x1f;
+
+	if (srcBit + w <= 32) 
+	{ 
+	    getandputbits0(psrc, srcBit, w, pdst);
+	    pdst++;
+	} 
+	else 
+	{ 
+
+	    maskbits(ppt->x, w, startmask, endmask, nlMiddle);
+	    if (startmask) 
+		nstart = 32 - srcBit; 
+	    else 
+		nstart = 0; 
+	    if (endmask) 
+		nend = xEnd & 0x1f; 
+	    srcStartOver = srcBit + nstart > 31;
+	    if (startmask) 
+	    { 
+		getandputbits0(psrc, srcBit, nstart, pdst);
+		if(srcStartOver)
+		    psrc++;
+	    } 
+	    nl = nlMiddle; 
+#ifdef FASTPUTBITS
+	    Duff(nl, putbits(*psrc, nstart, 32, pdst); psrc++; pdst++;);
+#else
+	    while (nl--) 
+	    { 
+		tmpSrc = *psrc;
+		putbits(tmpSrc, nstart, 32, pdst);
+		psrc++;
+		pdst++;
+	    } 
+#endif
+	    if (endmask) 
+	    { 
+		putbits(*psrc, nstart, nend, pdst);
+		if(nstart + nend > 32)
+		    pdst++;
+	    } 
+	    if (startmask || endmask)
+		pdst++; 
+	} 
+        ppt++;
+    }
+}
+