diff options
Diffstat (limited to 'hw/xwin/winpushpxl.c')
| -rw-r--r-- | hw/xwin/winpushpxl.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/hw/xwin/winpushpxl.c b/hw/xwin/winpushpxl.c new file mode 100644 index 000000000..deb9629d7 --- /dev/null +++ b/hw/xwin/winpushpxl.c @@ -0,0 +1,226 @@ +/* $XFree86: xc/programs/Xserver/hw/xwin/winpushpxl.c,v 1.1 2003/08/07 23:47:58 alanh Exp $ */ +/*********************************************************** + +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. + +******************************************************************/ +#include "X.h" +#include "gcstruct.h" +#include "scrnintstr.h" +#include "pixmapstr.h" +#include "miscstruct.h" +#include "../mfb/maskbits.h" +#include "mi.h" + +#define NPT 128 + +/* winPushPixels -- squeegees the fill style 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. + +WARNING: + this code works if the 1-bit deep pixmap format returned by GetSpans +is the same as the format defined by the mfb code (i.e. 32-bit padding +per scanline, scanline unit = 32 bits; later, this might mean +bitsizeof(int) padding and sacnline unit == bitsizeof(int).) + + */ + +/* + * in order to have both (MSB_FIRST and LSB_FIRST) versions of this + * in the server, we need to rename one of them + */ +void +winPushPixels(pGC, pBitMap, pDrawable, dx, dy, xOrg, yOrg) + GCPtr pGC; + PixmapPtr pBitMap; + DrawablePtr pDrawable; + int dx, dy, xOrg, yOrg; +{ + int h, dxDivPPW, ibEnd; + MiBits *pwLineStart; + register MiBits *pw, *pwEnd; + register MiBits msk; + register int ib, w; + register int ipt; /* index into above arrays */ + Bool fInBox; + DDXPointRec pt[NPT], ptThisLine; + int width[NPT]; + PixelType startmask; + + + startmask = (MiBits)(-1) ^ + LONG2CHARSDIFFORDER((MiBits)(-1) >> 1); + + pwLineStart = (MiBits *)xalloc(BitmapBytePad(dx)); + if (!pwLineStart) + return; + ipt = 0; + dxDivPPW = dx/PPW; + + for(h = 0, ptThisLine.x = 0, ptThisLine.y = 0; + h < dy; + h++, ptThisLine.y++) + { + + (*pBitMap->drawable.pScreen->GetSpans)((DrawablePtr)pBitMap, dx, + &ptThisLine, &dx, 1, (char *)pwLineStart); + + pw = pwLineStart; + /* Process all words which are fully in the pixmap */ + + fInBox = FALSE; + pwEnd = pwLineStart + dxDivPPW; + while(pw < pwEnd) + { + w = *pw; +#ifdef XFree86Server + msk = startmask; +#else + msk = (MiBits)(-1) ^ SCRRIGHT((MiBits)(-1), 1); +#endif + for(ib = 0; ib < PPW; ib++) + { + if(w & msk) + { + 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; + } + } +#ifdef XFree86Server + /* This is not quite right, but it'll do for now */ + msk = LONG2CHARSDIFFORDER(LONG2CHARSDIFFORDER(msk) >> 1); +#else + msk = SCRRIGHT(msk, 1); +#endif + } + pw++; + } + ibEnd = dx & PIM; + if(ibEnd) + { + /* Process final partial word on line */ + w = *pw; +#ifdef XFree86Server + msk = startmask; +#else + msk = (MiBits)(-1) ^ SCRRIGHT((MiBits)(-1), 1); +#endif + for(ib = 0; ib < ibEnd; ib++) + { + if(w & msk) + { + 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; + } + } +#ifdef XFree86Server + /* This is not quite right, but it'll do for now */ + msk = LONG2CHARSDIFFORDER(LONG2CHARSDIFFORDER(msk) >> 1); +#else + msk = SCRRIGHT(msk, 1); +#endif + } + } + /* 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; + } + } + } + xfree(pwLineStart); + /* Flush any remaining spans */ + if (ipt) + { + (*pGC->ops->FillSpans)(pDrawable, pGC, ipt, pt, width, TRUE); + } +} |