1
2/*
3 * Mesa 3-D graphics library
4 * Version:  3.5
5 *
6 * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
7 *
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:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
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.
24 */
25
26/*
27 * Normal transform 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.
30 *
31 * Gareth Hughes
32 */
33
34#ifndef __NORM_ARGS_H__
35#define __NORM_ARGS_H__
36
37/* Offsets for normal_func arguments
38 *
39 * typedef void (*normal_func)( CONST GLmatrix *mat,
40 *                              GLfloat scale,
41 *                              CONST GLvector4f *in,
42 *                              CONST GLfloat lengths[],
43 *                              GLvector4f *dest );
44 */
45#define OFFSET_MAT	4
46#define OFFSET_SCALE	8
47#define OFFSET_IN	12
48#define OFFSET_LENGTHS	16
49#define OFFSET_DEST	20
50
51#define ARG_MAT         REGOFF(FRAME_OFFSET+OFFSET_MAT, ESP)
52#define ARG_SCALE       REGOFF(FRAME_OFFSET+OFFSET_SCALE, ESP)
53#define ARG_IN          REGOFF(FRAME_OFFSET+OFFSET_IN, ESP)
54#define ARG_LENGTHS     REGOFF(FRAME_OFFSET+OFFSET_LENGTHS, ESP)
55#define ARG_DEST        REGOFF(FRAME_OFFSET+OFFSET_DEST, ESP)
56
57#endif
58