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/*
* Acceleration for the Creator and Creator3D framebuffer - clipping defines.
*
* Copyright (C) 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_clip.h,v 1.1 2000/05/18 23:21:36 dawes Exp $ */
#ifndef FFBCLIP_H
#define FFBCLIP_H
extern unsigned int FFBSetClip(FFBPtr pFfb,
ffb_fbcPtr ffb,
RegionPtr pClip,
int numRects);
static __inline__ void
FFBSet1Clip(FFBPtr pFfb, ffb_fbcPtr ffb, BoxPtr extents)
{
unsigned int xy1, xy2;
xy1 = (extents->y1 << 16) | extents->x1;
xy2 = ((extents->y2 - 1) << 16) | (extents->x2 - 1);
if (pFfb->clips[0] == xy1 && pFfb->clips[1] == xy2)
return;
FFBFifo(pFfb, 2);
FFB_WRITE64(&ffb->vclipmin, xy1, xy2);
pFfb->clips[0] = xy1;
pFfb->clips[1] = xy2;
}
#endif /* FFBCLIP_H */
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