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+/* $XFree86: xc/programs/Xserver/mfb/mfbpushpxl.c,v 1.6tsi 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.
+
+******************************************************************/
+/* $Xorg: mfbpushpxl.c,v 1.4 2001/02/09 02:05:19 xorgcvs Exp $ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include "gcstruct.h"
+#include "scrnintstr.h"
+#include "pixmapstr.h"
+#include "miscstruct.h"
+#include "maskbits.h"
+#include "regionstr.h"
+#include "mfb.h"
+
+/* mfbSolidPP is courtesy of xhacks@csri.toronto.edu
+
+ For fillStyle==FillSolid, a monochrome PushPixels can be reduced to
+ a ROP in the following way: (Note that the ROP is the same as the
+ result of ROP(src=0x3,dst=0x5))
+
+ src=0011 0000 0011
+ dst=0101 0101 0101
+ rop fg=0 fg=1
+ GXclear 0x0 0000 0100 0100 0
+ GXand 0x1 0001 0100 0101 s&d
+ GXandReverse 0x2 0010 0100 0110 s&~d
+ GXcopy 0x3 0011 0100 0111 s
+ GXandInverted 0x4 0100 0101 0100 ~s&d
+ GXnoop 0x5 0101 0101 0101 d
+ GXxor 0x6 0110 0101 0110 s^d
+ GXor 0x7 0111 0101 0111 s|d
+ GXnor 0x8 1000 0110 0100 ~s&~d
+ GXequiv 0x9 1001 0110 0101 ~s^d
+ GXinvert 0xa 1010 0110 0110 ~d
+ GXorReverse 0xb 1011 0110 0111 s|~d
+ GXcopyInverted 0xc 1100 0111 0100 ~s
+ GXorInverted 0xd 1101 0111 0101 ~s|d
+ GXnand 0xe 1110 0111 0110 ~s|~d
+ GXset 0xf 1111 0111 0111 1
+
+For src=0: newRop = 0x4|(rop>>2)
+For src=1: newRop = 0x4|(rop&3)
+*/
+
+/* mfbSolidPP -- 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
+mfbSolidPP(pGC, pBitMap, pDrawable, dx, dy, xOrg, yOrg)
+ GCPtr pGC;
+ PixmapPtr pBitMap;
+ DrawablePtr pDrawable;
+ int dx, dy, xOrg, yOrg;
+{
+ unsigned char alu;
+ RegionRec rgnDst;
+ DDXPointPtr pptSrc;
+ BoxRec srcBox;
+ register DDXPointPtr ppt;
+ register BoxPtr pbox;
+ int i;
+
+ if (!(pGC->planemask & 1)) return;
+
+ /* compute the reduced rop function */
+ alu = pGC->alu;
+ if (!(pGC->fgPixel&1)) alu >>= 2;
+ alu = (alu & 0x3) | 0x4;
+ if (alu == GXnoop) return;
+
+ srcBox.x1 = xOrg;
+ srcBox.y1 = yOrg;
+ srcBox.x2 = xOrg + dx;
+ srcBox.y2 = yOrg + dy;
+ REGION_INIT(pGC->pScreen, &rgnDst, &srcBox, 1);
+
+ /* clip the shape of the dst to the destination composite clip */
+ REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst, pGC->pCompositeClip);
+
+ if (!REGION_NIL(&rgnDst))
+ {
+ i = REGION_NUM_RECTS(&rgnDst);
+ pptSrc = (DDXPointPtr)ALLOCATE_LOCAL(i * sizeof(DDXPointRec));
+ if(pptSrc)
+ {
+ for (pbox = REGION_RECTS(&rgnDst), ppt = pptSrc;
+ --i >= 0;
+ pbox++, ppt++)
+ {
+ ppt->x = pbox->x1 - xOrg;
+ ppt->y = pbox->y1 - yOrg;
+ }
+ mfbDoBitblt((DrawablePtr)pBitMap, pDrawable, alu, &rgnDst, pptSrc);
+ DEALLOCATE_LOCAL(pptSrc);
+ }
+ }
+ REGION_UNINIT(pGC->pScreen, &rgnDst);
+}
+
+#define NPT 128
+
+/* mfbPushPixels -- 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
+mfbPushPixels(pGC, pBitMap, pDrawable, dx, dy, xOrg, yOrg)
+ GCPtr pGC;
+ PixmapPtr pBitMap;
+ DrawablePtr pDrawable;
+ int dx, dy, xOrg, 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 *)(pointer)
+ (((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 = endtab[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 = endtab[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);
+ }
+}
+
+mfbPushPixelsProc *mfbPushPixelsWeak(void)
+{
+ return mfbPushPixels;
+}
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