/* * 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 */