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Diffstat (limited to 'cfb/cfbpush8.c')
| -rw-r--r-- | cfb/cfbpush8.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/cfb/cfbpush8.c b/cfb/cfbpush8.c new file mode 100644 index 000000000..850de518d --- /dev/null +++ b/cfb/cfbpush8.c @@ -0,0 +1,184 @@ +/* + * Push Pixels for 8 bit displays. + */ + +/* + +Copyright 1989, 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. +*/ +/* $Xorg: cfbpush8.c,v 1.4 2001/02/09 02:04:38 xorgcvs Exp $ */ + +#if PSZ == 8 + +#include "X.h" +#include "Xmd.h" +#include "Xproto.h" +#include "gcstruct.h" +#include "windowstr.h" +#include "scrnintstr.h" +#include "pixmapstr.h" +#include "regionstr.h" +#include "cfb.h" +#include "cfbmskbits.h" +#include "cfb8bit.h" +#define MFB_CONSTS_ONLY +#include "maskbits.h" + +void +cfbPushPixels8 (pGC, pBitmap, pDrawable, dx, dy, xOrg, yOrg) + GCPtr pGC; + PixmapPtr pBitmap; + DrawablePtr pDrawable; + int dx, dy, xOrg, yOrg; +{ + register unsigned long *src, *dst; + register unsigned long pixel; + register unsigned long c, bits; + unsigned long *pdstLine, *psrcLine; + unsigned long *pdstBase; + int srcWidth; + int dstWidth; + int xoff; + int nBitmapLongs, nPixmapLongs; + int nBitmapTmp, nPixmapTmp; + unsigned long rightMask; + BoxRec bbox; + cfbPrivGCPtr devPriv; + + bbox.x1 = xOrg; + bbox.y1 = yOrg; + bbox.x2 = bbox.x1 + dx; + bbox.y2 = bbox.y1 + dy; + devPriv = cfbGetGCPrivate(pGC); + + switch (RECT_IN_REGION(pGC->pScreen, devPriv->pCompositeClip, &bbox)) + { + case rgnPART: +#ifndef LOWMEMFTPT + mfbPushPixels(pGC, pBitmap, pDrawable, dx, dy, xOrg, yOrg); +#else + miPushPixels(pGC, pBitmap, pDrawable, dx, dy, xOrg, yOrg); +#endif /* ifndef LOWMEMFTPT */ + case rgnOUT: + return; + } + + cfbGetLongWidthAndPointer (pDrawable, dstWidth, pdstBase) + + psrcLine = (unsigned long *) pBitmap->devPrivate.ptr; + srcWidth = (int) pBitmap->devKind >> PWSH; + + pixel = devPriv->xor; + xoff = xOrg & PIM; + nBitmapLongs = (dx + xoff) >> MFB_PWSH; + nPixmapLongs = (dx + PGSZB + xoff) >> PWSH; + + rightMask = ~cfb8BitLenMasks[((dx + xoff) & MFB_PIM)]; + + pdstLine = pdstBase + (yOrg * dstWidth) + (xOrg >> PWSH); + + while (dy--) + { + c = 0; + nPixmapTmp = nPixmapLongs; + nBitmapTmp = nBitmapLongs; + src = psrcLine; + dst = pdstLine; + while (nBitmapTmp--) + { + bits = *src++; + c |= BitRight (bits, xoff); + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + nPixmapTmp -= 8; + c = 0; + if (xoff) + c = BitLeft (bits, PGSZ - xoff); + } + if (BitLeft (rightMask, xoff)) + c |= BitRight (*src, xoff); + c &= rightMask; + switch (nPixmapTmp) { + case 8: + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + case 7: + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + case 6: + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + case 5: + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + case 4: + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + case 3: + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + case 2: + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + case 1: + WriteBitGroup(dst, pixel, GetBitGroup(c)); + NextBitGroup(c); + dst++; + case 0: + break; + } + pdstLine += dstWidth; + psrcLine += srcWidth; + } +} + +#endif |