mirror of
https://github.com/Stichting-MINIX-Research-Foundation/xsrc.git
synced 2025-09-16 16:15:10 -04:00
262 lines
7.7 KiB
C
262 lines
7.7 KiB
C
/* $XConsortium: s3ss.c,v 1.3 94/10/12 20:07:37 kaleb Exp $ */
|
|
/* $XFree86: xc/programs/Xserver/hw/xfree86/accel/s3/s3ss.c,v 3.5 1995/01/28 17:02:28 dawes Exp $ */
|
|
/*
|
|
|
|
Copyright (c) 1987 X Consortium
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining
|
|
a copy of this software and associated documentation files (the
|
|
"Software"), to deal in the Software without restriction, including
|
|
without limitation the rights to use, copy, modify, merge, publish,
|
|
distribute, sublicense, and/or sell copies of the Software, and to
|
|
permit persons to whom the Software is furnished to do so, subject to
|
|
the following conditions:
|
|
|
|
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 X CONSORTIUM 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 X Consortium 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 X Consortium.
|
|
|
|
|
|
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 AND KEVIN E. MARTIN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
|
|
SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
|
|
IN NO EVENT SHALL DIGITAL OR KEVIN E. MARTIN 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.
|
|
|
|
Modified for the 8514/A by Kevin E. Martin (martin@cs.unc.edu)
|
|
|
|
*/
|
|
|
|
/*
|
|
* Modified by Amancio Hasty and Jon Tombs
|
|
*
|
|
* Id: s3ss.c,v 2.2 1993/06/22 20:54:09 jon Exp jon
|
|
*/
|
|
|
|
/*
|
|
* Modified for the CyberVision 64 by Michael Teske
|
|
*/
|
|
|
|
#include "amiga.h"
|
|
#include "X.h"
|
|
#include "Xmd.h"
|
|
#include "servermd.h"
|
|
|
|
#include "misc.h"
|
|
#include "regionstr.h"
|
|
#include "gcstruct.h"
|
|
#include "windowstr.h"
|
|
#include "pixmapstr.h"
|
|
#include "scrnintstr.h"
|
|
|
|
#include "cfb.h"
|
|
#include "cfb16.h"
|
|
#include "cfb32.h"
|
|
#include "cfbmskbits.h"
|
|
|
|
#include "amigaCV.h"
|
|
extern short s3alu[];
|
|
|
|
/*
|
|
* SetSpans -- for each span copy pwidth[i] bits from psrc to pDrawable at
|
|
* ppt[i] using the raster op from the GC. If fSorted is TRUE, the scanlines
|
|
* are in increasing Y order. Source bit lines are server scanline padded so
|
|
* that they always begin on a word boundary.
|
|
*/
|
|
void
|
|
s3SetSpans(pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted)
|
|
DrawablePtr pDrawable;
|
|
GCPtr pGC;
|
|
char *psrc;
|
|
register DDXPointPtr ppt;
|
|
int *pwidth;
|
|
int nspans;
|
|
int fSorted;
|
|
{
|
|
register BoxPtr pbox, pboxLast, pboxTest;
|
|
register DDXPointPtr pptLast;
|
|
int alu;
|
|
RegionPtr prgnDst;
|
|
int xStart, xEnd;
|
|
int yMax;
|
|
fbFd *inf = amigaInfo(amigaCVsavepScreen);
|
|
volatile caddr_t vgaBase = (inf->regs);
|
|
int depth = inf->info.gd_planes;
|
|
int s3Bpp = depth>>3; /* Byte per pixel */
|
|
|
|
|
|
/*
|
|
* ErrorF("Set Spans: n = %d, (%d, %d, %d)\n", nspans, ppt->x, ppt->y,
|
|
* *pwidth);
|
|
*/
|
|
#if 0
|
|
if (!xf86VTSema)
|
|
{
|
|
switch (s3InfoRec.bitsPerPixel) {
|
|
case 8:
|
|
cfbSetSpans(pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted);
|
|
break;
|
|
case 16:
|
|
cfb16SetSpans(pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted);
|
|
break;
|
|
case 32:
|
|
cfb32SetSpans(pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted);
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
if (pDrawable->type != DRAWABLE_WINDOW) {
|
|
switch (pDrawable->bitsPerPixel) {
|
|
case 1:
|
|
mfbSetSpans(pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted);
|
|
break;
|
|
case 8:
|
|
cfbSetSpans(pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted);
|
|
break;
|
|
case 16:
|
|
cfb16SetSpans(pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted);
|
|
break;
|
|
case 32:
|
|
cfb32SetSpans(pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted);
|
|
break;
|
|
default:
|
|
ErrorF("Unsupported pixmap depth\n");
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
alu = pGC->alu;
|
|
prgnDst = cfbGetCompositeClip(pGC);
|
|
|
|
pptLast = ppt + nspans;
|
|
|
|
yMax = (int)pDrawable->y + (int)pDrawable->height;
|
|
|
|
pbox = REGION_RECTS(prgnDst);
|
|
pboxLast = pbox + REGION_NUM_RECTS(prgnDst);
|
|
|
|
if (fSorted) {
|
|
|
|
/*
|
|
* scan lines sorted in ascending order. Because they are sorted, we
|
|
* don't have to check each scanline against each clip box. We can be
|
|
* sure that this scanline only has to be clipped to boxes at or after
|
|
* the beginning of this y-band
|
|
*/
|
|
pboxTest = pbox;
|
|
while (ppt < pptLast) {
|
|
pbox = pboxTest;
|
|
if (ppt->y >= yMax)
|
|
break;
|
|
while (pbox < pboxLast) {
|
|
if (pbox->y1 > ppt->y) {
|
|
/* scanline is before clip box */
|
|
break;
|
|
} else if (pbox->y2 <= ppt->y) {
|
|
/* clip box is before scanline */
|
|
pboxTest = ++pbox;
|
|
continue;
|
|
} else if (pbox->x1 > ppt->x + *pwidth) {
|
|
/* clip box is to right of scanline */
|
|
break;
|
|
} else if (pbox->x2 <= ppt->x) {
|
|
/* scanline is to right of clip box */
|
|
pbox++;
|
|
continue;
|
|
}
|
|
/* at least some of the scanline is in the current clip box */
|
|
xStart = max(pbox->x1, ppt->x);
|
|
xEnd = min(ppt->x + *pwidth, pbox->x2);
|
|
/***************
|
|
cfbSetScanline(ppt->y, ppt->x, xStart, xEnd, psrc, alu,
|
|
pdstBase, widthDst, pGC->planemask);
|
|
***************/
|
|
|
|
amigaCVImageWrite (xStart, ppt->y, xEnd - xStart, 1,
|
|
psrc + (xStart - ppt->x) * s3Bpp,
|
|
PixmapBytePad(xEnd-xStart, pDrawable->depth),
|
|
0, 0, s3alu[alu], pGC->planemask, inf);
|
|
|
|
if (ppt->x + *pwidth <= pbox->x2) {
|
|
/* End of the line, as it were */
|
|
break;
|
|
} else
|
|
pbox++;
|
|
}
|
|
|
|
/*
|
|
* We've tried this line against every box; it must be outside them
|
|
* all. move on to the next point
|
|
*/
|
|
ppt++;
|
|
psrc += PixmapBytePad(*pwidth, PSZ);
|
|
pwidth++;
|
|
}
|
|
} else {
|
|
/* scan lines not sorted. We must clip each line against all the boxes */
|
|
while (ppt < pptLast) {
|
|
if (ppt->y >= 0 && ppt->y < yMax) {
|
|
|
|
for (pbox = REGION_RECTS(prgnDst); pbox < pboxLast; pbox++) {
|
|
if (pbox->y1 > ppt->y) {
|
|
|
|
/*
|
|
* rest of clip region is above this scanline, skip it
|
|
*/
|
|
break;
|
|
}
|
|
if (pbox->y2 <= ppt->y) {
|
|
/* clip box is below scanline */
|
|
pbox++;
|
|
break;
|
|
}
|
|
if (pbox->x1 <= ppt->x + *pwidth &&
|
|
pbox->x2 > ppt->x) {
|
|
xStart = max(pbox->x1, ppt->x);
|
|
xEnd = min(pbox->x2, ppt->x + *pwidth);
|
|
/**************
|
|
cfbSetScanline(ppt->y, ppt->x, xStart, xEnd, psrc, alu,
|
|
pdstBase, widthDst, pGC->planemask);
|
|
**************/
|
|
amigaCVImageWrite (xStart, ppt->y, xEnd - xStart, 1,
|
|
psrc + (xStart - ppt->x) * s3Bpp,
|
|
PixmapBytePad(xEnd-xStart, pDrawable->depth),
|
|
0, 0, s3alu[alu], pGC->planemask, inf);
|
|
|
|
}
|
|
}
|
|
}
|
|
psrc += PixmapBytePad(*pwidth, pDrawable->depth);
|
|
ppt++;
|
|
pwidth++;
|
|
}
|
|
}
|
|
}
|