237 lines
6.2 KiB
C
237 lines
6.2 KiB
C
/* $XFree86: xc/programs/Xserver/mfb/mfbtile.c,v 1.3 2003/02/18 21:30:01 tsi Exp $ */
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/* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */
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/***********************************************************
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Copyright 1987, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Digital not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/* $Xorg: mfbtile.c,v 1.4 2001/02/09 02:05:19 xorgcvs Exp $ */
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#include "X.h"
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#include "windowstr.h"
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#include "regionstr.h"
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#include "pixmapstr.h"
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#include "scrnintstr.h"
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#include "mfb.h"
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#include "maskbits.h"
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#include "mergerop.h"
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/*
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the boxes are already translated.
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NOTE:
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iy = ++iy < tileHeight ? iy : 0
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is equivalent to iy%= tileheight, and saves a division.
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*/
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/*
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tile area with a PPW bit wide pixmap
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*/
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void
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MROP_NAME(mfbTileAreaPPW)(pDraw, nbox, pbox, alu, ptile)
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DrawablePtr pDraw;
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int nbox;
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BoxPtr pbox;
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int alu;
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PixmapPtr ptile;
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{
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register PixelType *psrc;
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/* pointer to bits in tile, if needed */
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int tileHeight; /* height of the tile */
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register PixelType srcpix;
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int nlwidth; /* width in longwords of the drawable */
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int w; /* width of current box */
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MROP_DECLARE_REG ()
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register int h; /* height of current box */
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register int nlw; /* loop version of nlwMiddle */
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register PixelType *p; /* pointer to bits we're writing */
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PixelType startmask;
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PixelType endmask; /* masks for reggedy bits at either end of line */
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int nlwMiddle; /* number of longwords between sides of boxes */
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int nlwExtra; /* to get from right of box to left of next span */
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register int iy; /* index of current scanline in tile */
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PixelType *pbits; /* pointer to start of drawable */
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mfbGetPixelWidthAndPointer(pDraw, nlwidth, pbits);
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MROP_INITIALIZE(alu,~0)
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tileHeight = ptile->drawable.height;
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psrc = (PixelType *)(ptile->devPrivate.ptr);
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while (nbox--)
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{
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w = pbox->x2 - pbox->x1;
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h = pbox->y2 - pbox->y1;
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iy = pbox->y1 % tileHeight;
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p = mfbScanline(pbits, pbox->x1, pbox->y1, nlwidth);
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if ( ((pbox->x1 & PIM) + w) < PPW)
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{
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maskpartialbits(pbox->x1, w, startmask);
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nlwExtra = nlwidth;
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while (h--)
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{
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srcpix = psrc[iy];
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iy++;
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if (iy == tileHeight)
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iy = 0;
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*p = MROP_MASK(srcpix,*p,startmask);
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mfbScanlineInc(p, nlwExtra);
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}
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}
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else
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{
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maskbits(pbox->x1, w, startmask, endmask, nlwMiddle);
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nlwExtra = nlwidth - nlwMiddle;
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if (startmask && endmask)
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{
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nlwExtra -= 1;
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while (h--)
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{
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srcpix = psrc[iy];
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iy++;
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if (iy == tileHeight)
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iy = 0;
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nlw = nlwMiddle;
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*p = MROP_MASK (srcpix,*p,startmask);
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p++;
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while (nlw--)
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{
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*p = MROP_SOLID(srcpix,*p);
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p++;
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}
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*p = MROP_MASK(srcpix,*p,endmask);
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mfbScanlineInc(p, nlwExtra);
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}
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}
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else if (startmask && !endmask)
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{
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nlwExtra -= 1;
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while (h--)
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{
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srcpix = psrc[iy];
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iy++;
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if (iy == tileHeight)
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iy = 0;
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nlw = nlwMiddle;
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*p = MROP_MASK(srcpix,*p,startmask);
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p++;
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while (nlw--)
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{
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*p = MROP_SOLID(srcpix,*p);
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p++;
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}
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mfbScanlineInc(p, nlwExtra);
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}
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}
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else if (!startmask && endmask)
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{
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while (h--)
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{
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srcpix = psrc[iy];
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iy++;
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if (iy == tileHeight)
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iy = 0;
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nlw = nlwMiddle;
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while (nlw--)
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{
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*p = MROP_SOLID(srcpix,*p);
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p++;
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}
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*p = MROP_MASK(srcpix,*p,endmask);
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mfbScanlineInc(p, nlwExtra);
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}
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}
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else /* no ragged bits at either end */
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{
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while (h--)
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{
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srcpix = psrc[iy];
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iy++;
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if (iy == tileHeight)
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iy = 0;
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nlw = nlwMiddle;
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while (nlw--)
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{
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*p = MROP_SOLID (srcpix,*p);
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p++;
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}
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mfbScanlineInc(p, nlwExtra);
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}
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}
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}
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pbox++;
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}
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}
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#if (MROP) == 0
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void
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mfbTileAreaPPW (pDraw, nbox, pbox, alu, ptile)
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DrawablePtr pDraw;
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int nbox;
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BoxPtr pbox;
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int alu;
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PixmapPtr ptile;
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{
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void (*f)(
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DrawablePtr /*pDraw*/,
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int /*nbox*/,
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BoxPtr /*pbox*/,
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int /*alu*/,
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PixmapPtr /*ptile*/);
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if (alu == GXcopy)
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f = mfbTileAreaPPWCopy;
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else
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f = mfbTileAreaPPWGeneral;
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(*f) (pDraw, nbox, pbox, alu, ptile);
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}
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#endif
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