Importing xserver from X.Org 7.2RC2

1 files changed, 299 insertions, 0 deletions

diff --git a/xserver/mfb/mfbpixmap.c b/xserver/mfb/mfbpixmap.c
new file mode 100644
index 000000000..5ec8502cb
--- /dev/null
+++ b/xserver/mfb/mfbpixmap.c
@@ -0,0 +1,299 @@
+/***********************************************************
+
+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.
+
+******************************************************************/
+
+/* pixmap management
+   written by drewry, september 1986
+
+   on a monchrome device, a pixmap is a bitmap.
+*/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <string.h>
+
+#include <X11/Xmd.h>
+#include "scrnintstr.h"
+#include "pixmapstr.h"
+#include "maskbits.h"
+
+#include "mfb.h"
+#include "mi.h"
+
+#include "servermd.h"
+
+
+PixmapPtr
+mfbCreatePixmap (pScreen, width, height, depth)
+    ScreenPtr	pScreen;
+    int		width;
+    int		height;
+    int		depth;
+{
+    PixmapPtr pPixmap;
+    size_t datasize;
+    size_t paddedWidth;
+
+    if (depth != 1)
+	return NullPixmap;
+    paddedWidth = BitmapBytePad(width);
+    if (paddedWidth / 4 > 32767 || height > 32767)
+	return NullPixmap;
+    datasize = height * paddedWidth;
+    pPixmap = AllocatePixmap(pScreen, datasize);
+    if (!pPixmap)
+	return NullPixmap;
+    pPixmap->drawable.type = DRAWABLE_PIXMAP;
+    pPixmap->drawable.class = 0;
+    pPixmap->drawable.pScreen = pScreen;
+    pPixmap->drawable.depth = depth;
+    pPixmap->drawable.bitsPerPixel = depth;
+    pPixmap->drawable.id = 0;
+    pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
+    pPixmap->drawable.x = 0;
+    pPixmap->drawable.y = 0;
+    pPixmap->drawable.width = width;
+    pPixmap->drawable.height = height;
+    pPixmap->devKind = paddedWidth;
+    pPixmap->refcnt = 1;
+#ifdef PIXPRIV
+    pPixmap->devPrivate.ptr =  datasize ?
+		(pointer)((char *)pPixmap + pScreen->totalPixmapSize) : NULL;
+#else
+    pPixmap->devPrivate.ptr = (pointer)(pPixmap + 1);
+#endif
+    return pPixmap;
+}
+
+
+Bool
+mfbDestroyPixmap(pPixmap)
+    PixmapPtr pPixmap;
+{
+    if(--pPixmap->refcnt)
+	return TRUE;
+    xfree(pPixmap);
+    return TRUE;
+}
+
+
+PixmapPtr
+mfbCopyPixmap(pSrc)
+    register PixmapPtr	pSrc;
+{
+    register PixmapPtr	pDst;
+    int		size;
+    ScreenPtr pScreen;
+
+    size = pSrc->drawable.height * pSrc->devKind;
+    pScreen = pSrc->drawable.pScreen;
+    pDst = (*pScreen->CreatePixmap) (pScreen, pSrc->drawable.width, 
+				pSrc->drawable.height, pSrc->drawable.depth);
+    if (!pDst)
+	return NullPixmap;
+    memmove((char *)pDst->devPrivate.ptr, (char *)pSrc->devPrivate.ptr, size);
+    return pDst;
+}
+
+
+/* replicates a pattern to be a full 32 bits wide.
+   relies on the fact that each scnaline is longword padded.
+   doesn't do anything if pixmap is not a factor of 32 wide.
+   changes width field of pixmap if successful, so that the fast
+	XRotatePixmap code gets used if we rotate the pixmap later.
+
+   calculate number of times to repeat
+   for each scanline of pattern
+      zero out area to be filled with replicate
+      left shift and or in original as many times as needed
+*/
+void
+mfbPadPixmap(pPixmap)
+    PixmapPtr pPixmap;
+{
+    register int width = pPixmap->drawable.width;
+    register int h;
+    register PixelType mask;
+    register PixelType *p;
+    register PixelType bits;	/* real pattern bits */
+    register int i;
+    int rep;			/* repeat count for pattern */
+
+    if (width >= PPW)
+	return;
+
+    rep = PPW/width;
+    if (rep*width != PPW)
+	return;
+
+    mask = endtab[width];
+
+    p = (PixelType *)(pPixmap->devPrivate.ptr);
+    for (h=0; h < pPixmap->drawable.height; h++)
+    {
+	*p &= mask;
+	bits = *p;
+	for(i=1; i<rep; i++)
+	{
+	    bits = SCRRIGHT(bits, width);
+	    *p |= bits;
+	}
+	p++;
+    }
+    pPixmap->drawable.width = PPW;
+}
+
+/* Rotates pixmap pPix by w pixels to the right on the screen. Assumes that
+ * words are PPW bits wide, and that the least significant bit appears on the
+ * left.
+ */
+void
+mfbXRotatePixmap(pPix, rw)
+    PixmapPtr	pPix;
+    register int rw;
+{
+    register PixelType	*pw, *pwFinal;
+    register PixelType	t;
+
+    if (pPix == NullPixmap)
+        return;
+
+    pw = (PixelType *)pPix->devPrivate.ptr;
+    rw %= (int)pPix->drawable.width;
+    if (rw < 0)
+	rw += (int)pPix->drawable.width;
+    if(pPix->drawable.width == PPW)
+    {
+        pwFinal = pw + pPix->drawable.height;
+	while(pw < pwFinal)
+	{
+	    t = *pw;
+	    *pw++ = SCRRIGHT(t, rw) | 
+		    (SCRLEFT(t, (PPW-rw)) & endtab[rw]);
+	}
+    }
+    else
+    {
+	/* We no longer do this.  Validate doesn't try to rotate odd-size
+	 * tiles or stipples.  mfbUnnatural<tile/stipple>FS works directly off
+	 * the unrotate tile/stipple in the GC
+	 */
+        ErrorF("X internal error: trying to rotate odd-sized pixmap.\n");
+    }
+
+}
+
+/* Rotates pixmap pPix by h lines.  Assumes that h is always less than
+   pPix->height
+   works on any width.
+ */
+void
+mfbYRotatePixmap(pPix, rh)
+    register PixmapPtr	pPix;
+    int	rh;
+{
+    int nbyDown;	/* bytes to move down to row 0; also offset of
+			   row rh */
+    int nbyUp;		/* bytes to move up to line rh; also
+			   offset of first line moved down to 0 */
+    char *pbase;
+    char *ptmp;
+    int	height;
+
+    if (pPix == NullPixmap)
+	return;
+    height = (int) pPix->drawable.height;
+    rh %= height;
+    if (rh < 0)
+	rh += height;
+
+    pbase = (char *)pPix->devPrivate.ptr;
+
+    nbyDown = rh * pPix->devKind;
+    nbyUp = (pPix->devKind * height) - nbyDown;
+    if(!(ptmp = (char *)ALLOCATE_LOCAL(nbyUp)))
+	return;
+
+    memmove(ptmp, pbase, nbyUp);		/* save the low rows */
+    memmove(pbase, pbase+nbyUp, nbyDown);	/* slide the top rows down */
+    memmove(pbase+nbyDown, ptmp, nbyUp);	/* move lower rows up to row rh */
+    DEALLOCATE_LOCAL(ptmp);
+}
+
+void
+mfbCopyRotatePixmap(psrcPix, ppdstPix, xrot, yrot)
+    register PixmapPtr psrcPix, *ppdstPix;
+    int	xrot, yrot;
+{
+    register PixmapPtr pdstPix;
+
+    if ((pdstPix = *ppdstPix) &&
+	(pdstPix->devKind == psrcPix->devKind) &&
+	(pdstPix->drawable.height == psrcPix->drawable.height))
+    {
+	memmove((char *)pdstPix->devPrivate.ptr,
+		(char *)psrcPix->devPrivate.ptr,
+	      psrcPix->drawable.height * psrcPix->devKind);
+	pdstPix->drawable.width = psrcPix->drawable.width;
+	pdstPix->drawable.serialNumber = NEXT_SERIAL_NUMBER;
+    }
+    else
+    {
+	if (pdstPix)
+	    /* FIX XBUG 6168 */
+	    (*pdstPix->drawable.pScreen->DestroyPixmap)(pdstPix);
+	*ppdstPix = pdstPix = mfbCopyPixmap(psrcPix);
+	if (!pdstPix)
+	    return;
+    }
+    mfbPadPixmap(pdstPix);
+    if (xrot)
+	mfbXRotatePixmap(pdstPix, xrot);
+    if (yrot)
+	mfbYRotatePixmap(pdstPix, yrot);
+}