1 /* $Id: xform_args.h,v 1.4 2001/03/30 14:44:43 gareth 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 * 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.
32 * Gareth Hughes <gareth@valinux.com>
35 #ifndef __XFORM_ARGS_H__
36 #define __XFORM_ARGS_H__
38 /* Offsets for transform_func arguments
40 * typedef void (*transform_func)( GLvector4f *to_vec,
41 * const GLfloat m[16],
42 * const GLvector4f *from_vec );
45 #define OFFSET_MATRIX 8
46 #define OFFSET_SOURCE 12
48 #define ARG_DEST REGOFF(FRAME_OFFSET+OFFSET_DEST, ESP)
49 #define ARG_MATRIX REGOFF(FRAME_OFFSET+OFFSET_MATRIX, ESP)
50 #define ARG_SOURCE REGOFF(FRAME_OFFSET+OFFSET_SOURCE, ESP)