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/*
* Id: fbsetsp.c,v 1.1 1999/11/02 03:54:45 keithp Exp $
*
* Copyright © 1998 Keith Packard
*
* 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, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD 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.
*/
/* $XFree86: xc/programs/Xserver/fb/fbsetsp.c,v 1.4 2000/05/06 21:09:34 keithp Exp $ */
#include "fb.h"
void
fbSetSpans (DrawablePtr pDrawable,
GCPtr pGC,
char *src,
DDXPointPtr ppt,
int *pwidth,
int nspans,
int fSorted)
{
FbGCPrivPtr pPriv = fbGetGCPrivate (pGC);
RegionPtr pClip = fbGetCompositeClip(pGC);
FbBits *dst, *d, *s;
FbStride dstStride;
int dstBpp;
int dstXoff, dstYoff;
BoxPtr pbox;
int n;
int xoff;
int x1, x2;
#ifdef FB_24_32BIT
if (pDrawable->bitsPerPixel != BitsPerPixel(pDrawable->depth))
{
fb24_32SetSpans (pDrawable, pGC, src, ppt, pwidth, nspans, fSorted);
return;
}
#endif
fbGetDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
while (nspans--)
{
d = dst + (ppt->y + dstYoff) * dstStride;
xoff = (int) (((long) src) & (FB_MASK >> 3));
s = (FbBits *) (src - xoff);
xoff <<= 3;
n = REGION_NUM_RECTS(pClip);
pbox = REGION_RECTS (pClip);
while (n--)
{
if (pbox->y1 > ppt->y)
break;
if (pbox->y2 > ppt->y)
{
x1 = ppt->x;
x2 = x1 + *pwidth;
if (pbox->x1 > x1)
x1 = pbox->x1;
if (pbox->x2 < x2)
x2 = pbox->x2;
if (x1 < x2)
fbBlt ((FbBits *) s,
0,
(x1 - ppt->x) * dstBpp + xoff,
d,
dstStride,
(x1 + dstXoff) * dstBpp,
(x2 - x1) * dstBpp,
1,
pGC->alu,
pPriv->pm,
dstBpp,
FALSE,
FALSE);
}
}
src += PixmapBytePad (*pwidth, pDrawable->depth);
ppt++;
pwidth++;
}
fbValidateDrawable (pDrawable);
}
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