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/*
* Acceleration for the Creator and Creator3D framebuffer - Get spans.
*
* Copyright (C) 1998,1999 Jakub Jelinek (jakub@redhat.com)
* Copyright (C) 1999 David S. Miller (davem@redhat.com)
*
* 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
* JAKUB JELINEK OR DAVID MILLER 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.
*/
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/sunffb/ffb_gspans.c,v 1.2 2000/05/23 04:47:45 dawes Exp $ */
#include "ffb.h"
#include "ffb_regs.h"
#include "ffb_rcache.h"
#include "ffb_fifo.h"
#include "pixmapstr.h"
#include "scrnintstr.h"
#define PSZ 8
#include "cfb.h"
#undef PSZ
#include "cfb32.h"
void
CreatorGetSpans(DrawablePtr pDrawable, int wMax, DDXPointPtr ppt,
int *pwidth, int nspans, char *pchardstStart)
{
FFBPtr pFfb = GET_FFB_FROM_SCREEN (pDrawable->pScreen);
ffb_fbcPtr ffb = pFfb->regs;
char *addrp;
FFBLOG(("CreatorGetSpans: wmax(%d) nspans(%d)\n", wMax, nspans));
/* Punt early for this case. */
if(pDrawable->bitsPerPixel == 1) {
mfbGetSpans(pDrawable, wMax, ppt, pwidth,
nspans, pchardstStart);
return;
}
/* This code only works when sucking bits directly from
* the framebuffer.
*/
if(pDrawable->type != DRAWABLE_WINDOW) {
if (pDrawable->bitsPerPixel == 8)
cfbGetSpans(pDrawable, wMax, ppt, pwidth,
nspans, pchardstStart);
else
cfb32GetSpans(pDrawable, wMax, ppt, pwidth,
nspans, pchardstStart);
return;
}
/*
* XFree86 DDX empties the root borderClip when the VT is
* switched away; this checks for that case
*/
if (!cfbDrawableEnabled(pDrawable))
return;
/* We're just reading pixels from SFB, but we could be using
* a different read buffer when double-buffering.
*/
FFB_ATTR_SFB_VAR_WIN(pFfb, 0x00ffffff, GXcopy, (WindowPtr)pDrawable);
FFBWait(pFfb, ffb);
if (pDrawable->bitsPerPixel == 32) {
unsigned int *pdst = (unsigned int *)pchardstStart;
addrp = (char *) pFfb->sfb32;
if ((nspans == 1) && (*pwidth == 1)) {
*pdst = *(unsigned int *)(addrp + (ppt->y << 13) + (ppt->x << 2));
return;
}
while(nspans--) {
int w = min(ppt->x + *pwidth, 2048) - ppt->x;
unsigned int *psrc = (unsigned int *) (addrp +
(ppt->y << 13) +
(ppt->x << 2));
unsigned int *pdstNext = pdst + w;
while (w--)
*psrc++ = *pdst++;
pdst = pdstNext;
ppt++;
pwidth++;
}
} else {
unsigned char *pdst = (unsigned char *)pchardstStart;
addrp = (char *) pFfb->sfb8r;
if ((nspans == 1) && (*pwidth == 1)) {
*pdst = *(unsigned char *)(addrp + (ppt->y << 11) + (ppt->x << 0));
return;
}
while(nspans--) {
int w = min(ppt->x + *pwidth, 2048) - ppt->x;
unsigned char *psrc = (unsigned char *) (addrp +
(ppt->y << 11) +
(ppt->x << 0));
unsigned char *pdstNext = pdst + w;
while (w--)
*psrc++ = *pdst++;
pdst = pdstNext;
ppt++;
pwidth++;
}
}
}
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