sync code with last improvements from OpenBSD
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249
xserver/mi/mipushpxl.c
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249
xserver/mi/mipushpxl.c
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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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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/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 "regionstr.h"
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#include "mi.h"
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#include "servermd.h"
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#define NPT 128
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/* These were stolen from mfb. They don't really belong here. */
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#define LONG2CHARSSAMEORDER(x) ((MiBits)(x))
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#define LONG2CHARSDIFFORDER( x ) ( ( ( ( x ) & (MiBits)0x000000FF ) << 0x18 ) \
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| ( ( ( x ) & (MiBits)0x0000FF00 ) << 0x08 ) \
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| ( ( ( x ) & (MiBits)0x00FF0000 ) >> 0x08 ) \
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| ( ( ( x ) & (MiBits)0xFF000000 ) >> 0x18 ) )
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#define PGSZB 4
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#define PPW (PGSZB<<3) /* assuming 8 bits per byte */
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#define PGSZ PPW
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#define PLST (PPW-1)
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#define PIM PLST
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#define PWSH 5
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/* miPushPixels -- squeegees the fill style 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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WARNING:
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this code works if the 1-bit deep pixmap format returned by GetSpans
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is the same as the format defined by the mfb code (i.e. 32-bit padding
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per scanline, scanline unit = 32 bits; later, this might mean
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bitsizeof(int) padding and sacnline unit == bitsizeof(int).)
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*/
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/*
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* in order to have both (MSB_FIRST and LSB_FIRST) versions of this
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* in the server, we need to rename one of them
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*/
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void
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miPushPixels(GCPtr pGC, PixmapPtr pBitMap, DrawablePtr pDrawable,
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int dx, int dy, int xOrg, int yOrg)
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{
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int h, dxDivPPW, ibEnd;
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MiBits *pwLineStart;
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MiBits *pw, *pwEnd;
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MiBits msk;
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int ib, w;
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int ipt; /* index into above arrays */
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Bool fInBox;
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DDXPointRec pt[NPT], ptThisLine;
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int width[NPT];
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#if 1
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MiBits startmask;
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if (screenInfo.bitmapBitOrder == IMAGE_BYTE_ORDER)
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if (screenInfo.bitmapBitOrder == LSBFirst)
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startmask = (MiBits) (-1) ^ LONG2CHARSSAMEORDER((MiBits) (-1) << 1);
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else
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startmask = (MiBits) (-1) ^ LONG2CHARSSAMEORDER((MiBits) (-1) >> 1);
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else if (screenInfo.bitmapBitOrder == LSBFirst)
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startmask = (MiBits) (-1) ^ LONG2CHARSDIFFORDER((MiBits) (-1) << 1);
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else
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startmask = (MiBits) (-1) ^ LONG2CHARSDIFFORDER((MiBits) (-1) >> 1);
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#endif
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pwLineStart = malloc(BitmapBytePad(dx));
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if (!pwLineStart)
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return;
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ipt = 0;
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dxDivPPW = dx / PPW;
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for (h = 0, ptThisLine.x = 0, ptThisLine.y = 0; h < dy; h++, ptThisLine.y++) {
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(*pBitMap->drawable.pScreen->GetSpans) ((DrawablePtr) pBitMap, dx,
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&ptThisLine, &dx, 1,
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(char *) pwLineStart);
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pw = pwLineStart;
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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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w = *pw;
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#if 1
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msk = startmask;
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#else
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msk = (MiBits) (-1) ^ SCRRIGHT((MiBits) (-1), 1);
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#endif
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for (ib = 0; ib < PPW; ib++) {
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if (w & msk) {
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if (!fInBox) {
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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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if (fInBox) {
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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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(*pGC->ops->FillSpans) (pDrawable, pGC,
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NPT, pt, 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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#if 1
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/* This is not quite right, but it'll do for now */
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if (screenInfo.bitmapBitOrder == IMAGE_BYTE_ORDER)
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if (screenInfo.bitmapBitOrder == LSBFirst)
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msk =
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LONG2CHARSSAMEORDER(LONG2CHARSSAMEORDER(msk) << 1);
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else
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msk =
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LONG2CHARSSAMEORDER(LONG2CHARSSAMEORDER(msk) >> 1);
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else if (screenInfo.bitmapBitOrder == LSBFirst)
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msk = LONG2CHARSDIFFORDER(LONG2CHARSDIFFORDER(msk) << 1);
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else
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msk = LONG2CHARSDIFFORDER(LONG2CHARSDIFFORDER(msk) >> 1);
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#else
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msk = SCRRIGHT(msk, 1);
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#endif
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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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/* Process final partial word on line */
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w = *pw;
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#if 1
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msk = startmask;
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#else
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msk = (MiBits) (-1) ^ SCRRIGHT((MiBits) (-1), 1);
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#endif
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for (ib = 0; ib < ibEnd; ib++) {
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if (w & msk) {
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if (!fInBox) {
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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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if (fInBox) {
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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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(*pGC->ops->FillSpans) (pDrawable,
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pGC, NPT, pt, 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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#if 1
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/* This is not quite right, but it'll do for now */
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if (screenInfo.bitmapBitOrder == IMAGE_BYTE_ORDER)
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if (screenInfo.bitmapBitOrder == LSBFirst)
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msk =
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LONG2CHARSSAMEORDER(LONG2CHARSSAMEORDER(msk) << 1);
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else
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msk =
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LONG2CHARSSAMEORDER(LONG2CHARSSAMEORDER(msk) >> 1);
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else if (screenInfo.bitmapBitOrder == LSBFirst)
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msk = LONG2CHARSDIFFORDER(LONG2CHARSDIFFORDER(msk) << 1);
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else
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msk = LONG2CHARSDIFFORDER(LONG2CHARSDIFFORDER(msk) >> 1);
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#else
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msk = SCRRIGHT(msk, 1);
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#endif
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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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width[ipt] = dx + xOrg - pt[ipt].x;
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if (++ipt >= NPT) {
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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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free(pwLineStart);
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/* Flush any remaining spans */
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if (ipt) {
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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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