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Diffstat (limited to 'mfb/mfbtile.c')
| -rw-r--r-- | mfb/mfbtile.c | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/mfb/mfbtile.c b/mfb/mfbtile.c new file mode 100644 index 000000000..f716f4487 --- /dev/null +++ b/mfb/mfbtile.c @@ -0,0 +1,230 @@ +/* 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: mfbtile.c,v 1.4 2001/02/09 02:05:19 xorgcvs Exp $ */ +#include "X.h" + +#include "windowstr.h" +#include "regionstr.h" +#include "pixmapstr.h" +#include "scrnintstr.h" + +#include "mfb.h" +#include "maskbits.h" + +#include "mergerop.h" +/* + + the boxes are already translated. + + NOTE: + iy = ++iy < tileHeight ? iy : 0 +is equivalent to iy%= tileheight, and saves a division. +*/ + +/* + tile area with a PPW bit wide pixmap +*/ +void +MROP_NAME(mfbTileAreaPPW)(pDraw, nbox, pbox, alu, ptile) + DrawablePtr pDraw; + int nbox; + BoxPtr pbox; + int alu; + PixmapPtr ptile; +{ + register PixelType *psrc; + /* pointer to bits in tile, if needed */ + int tileHeight; /* height of the tile */ + register PixelType srcpix; + int nlwidth; /* width in longwords of the drawable */ + int w; /* width of current box */ + MROP_DECLARE_REG () + register int h; /* height of current box */ + register int nlw; /* loop version of nlwMiddle */ + register PixelType *p; /* pointer to bits we're writing */ + PixelType startmask; + PixelType endmask; /* masks for reggedy bits at either end of line */ + int nlwMiddle; /* number of longwords between sides of boxes */ + int nlwExtra; /* to get from right of box to left of next span */ + register int iy; /* index of current scanline in tile */ + PixelType *pbits; /* pointer to start of drawable */ + + mfbGetPixelWidthAndPointer(pDraw, nlwidth, pbits); + + MROP_INITIALIZE(alu,~0) + + tileHeight = ptile->drawable.height; + psrc = (PixelType *)(ptile->devPrivate.ptr); + + while (nbox--) + { + w = pbox->x2 - pbox->x1; + h = pbox->y2 - pbox->y1; + iy = pbox->y1 % tileHeight; + p = mfbScanline(pbits, pbox->x1, pbox->y1, nlwidth); + + if ( ((pbox->x1 & PIM) + w) < PPW) + { + maskpartialbits(pbox->x1, w, startmask); + nlwExtra = nlwidth; + while (h--) + { + srcpix = psrc[iy]; + iy++; + if (iy == tileHeight) + iy = 0; + *p = MROP_MASK(srcpix,*p,startmask); + mfbScanlineInc(p, nlwExtra); + } + } + else + { + maskbits(pbox->x1, w, startmask, endmask, nlwMiddle); + nlwExtra = nlwidth - nlwMiddle; + + if (startmask && endmask) + { + nlwExtra -= 1; + while (h--) + { + srcpix = psrc[iy]; + iy++; + if (iy == tileHeight) + iy = 0; + nlw = nlwMiddle; + *p = MROP_MASK (srcpix,*p,startmask); + p++; + while (nlw--) + { + *p = MROP_SOLID(srcpix,*p); + p++; + } + + *p = MROP_MASK(srcpix,*p,endmask); + mfbScanlineInc(p, nlwExtra); + } + } + else if (startmask && !endmask) + { + nlwExtra -= 1; + while (h--) + { + srcpix = psrc[iy]; + iy++; + if (iy == tileHeight) + iy = 0; + nlw = nlwMiddle; + *p = MROP_MASK(srcpix,*p,startmask); + p++; + while (nlw--) + { + *p = MROP_SOLID(srcpix,*p); + p++; + } + mfbScanlineInc(p, nlwExtra); + } + } + else if (!startmask && endmask) + { + while (h--) + { + srcpix = psrc[iy]; + iy++; + if (iy == tileHeight) + iy = 0; + nlw = nlwMiddle; + while (nlw--) + { + *p = MROP_SOLID(srcpix,*p); + p++; + } + + *p = MROP_MASK(srcpix,*p,endmask); + mfbScanlineInc(p, nlwExtra); + } + } + else /* no ragged bits at either end */ + { + while (h--) + { + srcpix = psrc[iy]; + iy++; + if (iy == tileHeight) + iy = 0; + nlw = nlwMiddle; + while (nlw--) + { + *p = MROP_SOLID (srcpix,*p); + p++; + } + mfbScanlineInc(p, nlwExtra); + } + } + } + pbox++; + } +} + +#if (MROP) == 0 +void +mfbTileAreaPPW (pDraw, nbox, pbox, alu, ptile) + DrawablePtr pDraw; + int nbox; + BoxPtr pbox; + int alu; + PixmapPtr ptile; +{ + void (*f)(), mfbTileAreaPPWCopy(), mfbTileAreaPPWGeneral(); + + if (alu == GXcopy) + f = mfbTileAreaPPWCopy; + else + f = mfbTileAreaPPWGeneral; + (*f) (pDraw, nbox, pbox, alu, ptile); +} +#endif |