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 * 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.
34 #ifndef __NORM_ARGS_H__
35 #define __NORM_ARGS_H__
37 /* Offsets for normal_func arguments
39 * typedef void (*normal_func)( CONST GLmatrix *mat,
41 * CONST GLvector4f *in,
42 * CONST GLfloat lengths[],
46 #define OFFSET_SCALE 8
48 #define OFFSET_LENGTHS 16
49 #define OFFSET_DEST 20
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)