norm_args.h revision 854b4a3b5456e0a381df49de854fdb315899dfc2 
1/* $Id: norm_args.h,v 1.4 2003/11/26 08:32:36 dborca Exp $ */
2
3/*
4 * Mesa 3-D graphics library
5 * Version:  3.5
6 *
7 * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
8 *
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:
15 *
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
18 *
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
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27/*
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.
31 *
32 * Gareth Hughes
33 */
34
35#ifndef __NORM_ARGS_H__
36#define __NORM_ARGS_H__
37
38/* Offsets for normal_func arguments
39 *
40 * typedef void (*normal_func)( CONST GLmatrix *mat,
41 *                              GLfloat scale,
42 *                              CONST GLvector4f *in,
43 *                              CONST GLfloat lengths[],
44 *                              GLvector4f *dest );
45 */
46#define OFFSET_MAT	4
47#define OFFSET_SCALE	8
48#define OFFSET_IN	12
49#define OFFSET_LENGTHS	16
50#define OFFSET_DEST	20
51
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)
57
58#endif
59