3 * Mesa 3-D graphics library
6 * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 * Clip test function interface for assembly code. Simply define
28 * FRAME_OFFSET to the number of bytes pushed onto the stack before
29 * using the ARG_* argument macros.
34 #ifndef __CLIP_ARGS_H__
35 #define __CLIP_ARGS_H__
38 * Offsets for clip_func arguments
40 * typedef GLvector4f *(*clip_func)( GLvector4f *clip_vec,
41 * GLvector4f *proj_vec,
47 #define OFFSET_SOURCE 4
49 #define OFFSET_CLIP 12
53 #define ARG_SOURCE REGOFF(FRAME_OFFSET+OFFSET_SOURCE, ESP)
54 #define ARG_DEST REGOFF(FRAME_OFFSET+OFFSET_DEST, ESP)
55 #define ARG_CLIP REGOFF(FRAME_OFFSET+OFFSET_CLIP, ESP)
56 #define ARG_OR REGOFF(FRAME_OFFSET+OFFSET_OR, ESP)
57 #define ARG_AND REGOFF(FRAME_OFFSET+OFFSET_AND, ESP)