1 /* $Id: norm_args.h,v 1.4 2003/11/26 08:32:36 dborca Exp $ */
4 * Mesa 3-D graphics library
7 * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Normal transform function interface for assembly code. Simply define
29 * FRAME_OFFSET to the number of bytes pushed onto the stack before
30 * using the ARG_* argument macros.
35 #ifndef __NORM_ARGS_H__
36 #define __NORM_ARGS_H__
38 /* Offsets for normal_func arguments
40 * typedef void (*normal_func)( CONST GLmatrix *mat,
42 * CONST GLvector4f *in,
43 * CONST GLfloat lengths[],
47 #define OFFSET_SCALE 8
49 #define OFFSET_LENGTHS 16
50 #define OFFSET_DEST 20
52 #define ARG_MAT REGOFF(FRAME_OFFSET+OFFSET_MAT, ESP)
53 #define ARG_SCALE REGOFF(FRAME_OFFSET+OFFSET_SCALE, ESP)
54 #define ARG_IN REGOFF(FRAME_OFFSET+OFFSET_IN, ESP)
55 #define ARG_LENGTHS REGOFF(FRAME_OFFSET+OFFSET_LENGTHS, ESP)
56 #define ARG_DEST REGOFF(FRAME_OFFSET+OFFSET_DEST, ESP)