2003-11-17 20:03:47 +01:00
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/* $XFree86: xc/programs/Xserver/mfb/mfbpushpxl.c,v 1.7 2003/02/18 21:30:01 tsi Exp $ */
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2003-11-14 16:54:54 +01:00
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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: mfbpushpxl.c,v 1.4 2001/02/09 02:05:19 xorgcvs Exp $ */
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#include "X.h"
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#include "gcstruct.h"
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#include "scrnintstr.h"
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#include "pixmapstr.h"
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#include "miscstruct.h"
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#include "maskbits.h"
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#include "regionstr.h"
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#include "mfb.h"
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/* mfbSolidPP is courtesy of xhacks@csri.toronto.edu
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For fillStyle==FillSolid, a monochrome PushPixels can be reduced to
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a ROP in the following way: (Note that the ROP is the same as the
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result of ROP(src=0x3,dst=0x5))
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src=0011 0000 0011
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dst=0101 0101 0101
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rop fg=0 fg=1
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GXclear 0x0 0000 0100 0100 0
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GXand 0x1 0001 0100 0101 s&d
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GXandReverse 0x2 0010 0100 0110 s&~d
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GXcopy 0x3 0011 0100 0111 s
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GXandInverted 0x4 0100 0101 0100 ~s&d
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GXnoop 0x5 0101 0101 0101 d
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GXxor 0x6 0110 0101 0110 s^d
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GXor 0x7 0111 0101 0111 s|d
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GXnor 0x8 1000 0110 0100 ~s&~d
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GXequiv 0x9 1001 0110 0101 ~s^d
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GXinvert 0xa 1010 0110 0110 ~d
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GXorReverse 0xb 1011 0110 0111 s|~d
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GXcopyInverted 0xc 1100 0111 0100 ~s
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GXorInverted 0xd 1101 0111 0101 ~s|d
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GXnand 0xe 1110 0111 0110 ~s|~d
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GXset 0xf 1111 0111 0111 1
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For src=0: newRop = 0x4|(rop>>2)
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For src=1: newRop = 0x4|(rop&3)
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*/
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/* mfbSolidPP -- squeegees the forground color of pGC through pBitMap
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* into pDrawable. pBitMap is a stencil (dx by dy of it is used, it may
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* be bigger) which is placed on the drawable at xOrg, yOrg. Where a 1 bit
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* is set in the bitmap, the fill style is put onto the drawable using
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* the GC's logical function. The drawable is not changed where the bitmap
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* has a zero bit or outside the area covered by the stencil.
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*/
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void
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mfbSolidPP(pGC, pBitMap, pDrawable, dx, dy, xOrg, yOrg)
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GCPtr pGC;
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PixmapPtr pBitMap;
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DrawablePtr pDrawable;
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int dx, dy, xOrg, yOrg;
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{
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unsigned char alu;
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RegionRec rgnDst;
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DDXPointPtr pptSrc;
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BoxRec srcBox;
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register DDXPointPtr ppt;
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register BoxPtr pbox;
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int i;
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if (!(pGC->planemask & 1)) return;
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/* compute the reduced rop function */
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alu = pGC->alu;
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if (!(pGC->fgPixel&1)) alu >>= 2;
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alu = (alu & 0x3) | 0x4;
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if (alu == GXnoop) return;
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srcBox.x1 = xOrg;
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srcBox.y1 = yOrg;
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srcBox.x2 = xOrg + dx;
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srcBox.y2 = yOrg + dy;
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REGION_INIT(pGC->pScreen, &rgnDst, &srcBox, 1);
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/* clip the shape of the dst to the destination composite clip */
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REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst, pGC->pCompositeClip);
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if (!REGION_NIL(&rgnDst))
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{
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i = REGION_NUM_RECTS(&rgnDst);
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pptSrc = (DDXPointPtr)ALLOCATE_LOCAL(i * sizeof(DDXPointRec));
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if(pptSrc)
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{
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for (pbox = REGION_RECTS(&rgnDst), ppt = pptSrc;
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--i >= 0;
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pbox++, ppt++)
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{
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ppt->x = pbox->x1 - xOrg;
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ppt->y = pbox->y1 - yOrg;
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}
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mfbDoBitblt((DrawablePtr)pBitMap, pDrawable, alu, &rgnDst, pptSrc);
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DEALLOCATE_LOCAL(pptSrc);
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}
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}
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REGION_UNINIT(pGC->pScreen, &rgnDst);
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}
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#define NPT 128
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/* mfbPushPixels -- squeegees the forground color of pGC through pBitMap
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* into pDrawable. pBitMap is a stencil (dx by dy of it is used, it may
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* be bigger) which is placed on the drawable at xOrg, yOrg. Where a 1 bit
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* is set in the bitmap, the fill style is put onto the drawable using
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* the GC's logical function. The drawable is not changed where the bitmap
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* has a zero bit or outside the area covered by the stencil.
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*/
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void
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mfbPushPixels(pGC, pBitMap, pDrawable, dx, dy, xOrg, yOrg)
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GCPtr pGC;
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PixmapPtr pBitMap;
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DrawablePtr pDrawable;
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int dx, dy, xOrg, yOrg;
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{
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int h, dxDivPPW, ibEnd;
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PixelType *pwLineStart;
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register PixelType *pw, *pwEnd;
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register PixelType mask;
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register int ib;
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register PixelType w;
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register int ipt; /* index into above arrays */
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Bool fInBox;
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DDXPointRec pt[NPT];
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int width[NPT];
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/* Now scan convert the pixmap and use the result to call fillspans in
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* in the drawable with the original GC */
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ipt = 0;
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dxDivPPW = dx/PPW;
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for(h = 0; h < dy; h++)
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{
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pw = (PixelType *)(pointer)
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(((char *)(pBitMap->devPrivate.ptr))+(h * pBitMap->devKind));
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pwLineStart = pw;
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/* Process all words which are fully in the pixmap */
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fInBox = FALSE;
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pwEnd = pwLineStart + dxDivPPW;
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while(pw < pwEnd)
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{
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w = *pw;
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mask = endtab[1];
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for(ib = 0; ib < PPW; ib++)
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{
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if(w & mask)
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{
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if(!fInBox)
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{
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pt[ipt].x = ((pw - pwLineStart) << PWSH) + ib + xOrg;
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pt[ipt].y = h + yOrg;
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/* start new box */
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fInBox = TRUE;
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}
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}
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else
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{
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if(fInBox)
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{
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width[ipt] = ((pw - pwLineStart) << PWSH) +
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ib + xOrg - pt[ipt].x;
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if (++ipt >= NPT)
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{
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(*pGC->ops->FillSpans)(pDrawable, pGC, NPT, pt,
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width, TRUE);
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ipt = 0;
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}
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/* end box */
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fInBox = FALSE;
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}
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}
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mask = SCRRIGHT(mask, 1);
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}
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pw++;
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}
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ibEnd = dx & PIM;
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if(ibEnd)
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{
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/* Process final partial word on line */
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w = *pw;
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mask = endtab[1];
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for(ib = 0; ib < ibEnd; ib++)
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{
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if(w & mask)
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{
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if(!fInBox)
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{
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/* start new box */
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pt[ipt].x = ((pw - pwLineStart) << PWSH) + ib + xOrg;
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pt[ipt].y = h + yOrg;
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fInBox = TRUE;
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}
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}
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else
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{
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if(fInBox)
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{
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/* end box */
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width[ipt] = ((pw - pwLineStart) << PWSH) +
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ib + xOrg - pt[ipt].x;
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if (++ipt >= NPT)
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{
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(*pGC->ops->FillSpans)(pDrawable, pGC, NPT, pt,
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width, TRUE);
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ipt = 0;
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}
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fInBox = FALSE;
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}
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}
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mask = SCRRIGHT(mask, 1);
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}
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}
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/* If scanline ended with last bit set, end the box */
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if(fInBox)
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{
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width[ipt] = dx + xOrg - pt[ipt].x;
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if (++ipt >= NPT)
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{
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(*pGC->ops->FillSpans)(pDrawable, pGC, NPT, pt, width, TRUE);
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ipt = 0;
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}
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}
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}
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/* Flush any remaining spans */
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if (ipt)
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{
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(*pGC->ops->FillSpans)(pDrawable, pGC, ipt, pt, width, TRUE);
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}
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}
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