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Diffstat (limited to 'xorg-server/afb/afbpushpxl.c')
| -rw-r--r-- | xorg-server/afb/afbpushpxl.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/xorg-server/afb/afbpushpxl.c b/xorg-server/afb/afbpushpxl.c new file mode 100644 index 000000000..3dd548737 --- /dev/null +++ b/xorg-server/afb/afbpushpxl.c @@ -0,0 +1,169 @@ +/*********************************************************** + +Copyright (c) 1987 X Consortium + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +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 +X CONSORTIUM 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 X Consortium 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 X Consortium. + + +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. + +******************************************************************/ + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include <string.h> + +#include <X11/X.h> +#include "gcstruct.h" +#include "scrnintstr.h" +#include "pixmapstr.h" +#include "regionstr.h" +#include "maskbits.h" +#include "afb.h" + +#define NPT 128 + +/* afbPushPixels -- squeegees the forground color of pGC through pBitMap + * into pDrawable. pBitMap is a stencil (dx by dy of it is used, it may + * be bigger) which is placed on the drawable at xOrg, yOrg. Where a 1 bit + * is set in the bitmap, the fill style is put onto the drawable using + * the GC's logical function. The drawable is not changed where the bitmap + * has a zero bit or outside the area covered by the stencil. + */ +void +afbPushPixels(GCPtr pGC, PixmapPtr pBitMap, DrawablePtr pDrawable, int dx, int dy, int xOrg, int yOrg) +{ + int h, dxDivPPW, ibEnd; + PixelType *pwLineStart; + register PixelType *pw, *pwEnd; + register PixelType mask; + register int ib; + register PixelType w; + register int ipt; /* index into above arrays */ + Bool fInBox; + DDXPointRec pt[NPT]; + int width[NPT]; + + /* Now scan convert the pixmap and use the result to call fillspans in + * in the drawable with the original GC */ + ipt = 0; + dxDivPPW = dx/PPW; + for (h = 0; h < dy; h++) { + + pw = (PixelType *) + (((char *)(pBitMap->devPrivate.ptr))+(h * pBitMap->devKind)); + pwLineStart = pw; + /* Process all words which are fully in the pixmap */ + + fInBox = FALSE; + pwEnd = pwLineStart + dxDivPPW; + while(pw < pwEnd) { + w = *pw; + mask = mfbGetendtab(1); + for(ib = 0; ib < PPW; ib++) { + if(w & mask) { + if(!fInBox) { + pt[ipt].x = ((pw - pwLineStart) << PWSH) + ib + xOrg; + pt[ipt].y = h + yOrg; + /* start new box */ + fInBox = TRUE; + } + } else { + if(fInBox) { + width[ipt] = ((pw - pwLineStart) << PWSH) + + ib + xOrg - pt[ipt].x; + if (++ipt >= NPT) { + (*pGC->ops->FillSpans)(pDrawable, pGC, NPT, pt, + width, TRUE); + ipt = 0; + } + /* end box */ + fInBox = FALSE; + } + } + mask = SCRRIGHT(mask, 1); + } + pw++; + } + ibEnd = dx & PIM; + if(ibEnd) { + /* Process final partial word on line */ + w = *pw; + mask = mfbGetendtab(1); + for(ib = 0; ib < ibEnd; ib++) { + if(w & mask) { + if(!fInBox) { + /* start new box */ + pt[ipt].x = ((pw - pwLineStart) << PWSH) + ib + xOrg; + pt[ipt].y = h + yOrg; + fInBox = TRUE; + } + } else { + if(fInBox) { + /* end box */ + width[ipt] = ((pw - pwLineStart) << PWSH) + + ib + xOrg - pt[ipt].x; + if (++ipt >= NPT) { + (*pGC->ops->FillSpans)(pDrawable, pGC, NPT, pt, + width, TRUE); + ipt = 0; + } + fInBox = FALSE; + } + } + mask = SCRRIGHT(mask, 1); + } + } + /* If scanline ended with last bit set, end the box */ + if(fInBox) { + width[ipt] = dx + xOrg - pt[ipt].x; + if (++ipt >= NPT) { + (*pGC->ops->FillSpans)(pDrawable, pGC, NPT, pt, width, TRUE); + ipt = 0; + } + } + } + /* Flush any remaining spans */ + if (ipt) { + (*pGC->ops->FillSpans)(pDrawable, pGC, ipt, pt, width, TRUE); + } +} |