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Diffstat (limited to 'src/ffb_clip.h')
| -rw-r--r-- | src/ffb_clip.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/ffb_clip.h b/src/ffb_clip.h new file mode 100644 index 0000000..b90655b --- /dev/null +++ b/src/ffb_clip.h @@ -0,0 +1,49 @@ +/* + * 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 */ |