tgsi_util.h revision 4a49301e 
1/**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * 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
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#ifndef TGSI_UTIL_H
29#define TGSI_UTIL_H
30
31#if defined __cplusplus
32extern "C" {
33#endif
34
35struct tgsi_src_register;
36struct tgsi_full_src_register;
37
38void *
39tgsi_align_128bit(
40   void *unaligned );
41
42unsigned
43tgsi_util_get_src_register_swizzle(
44   const struct tgsi_src_register *reg,
45   unsigned component );
46
47
48unsigned
49tgsi_util_get_full_src_register_swizzle(
50   const struct tgsi_full_src_register *reg,
51   unsigned component );
52
53void
54tgsi_util_set_src_register_swizzle(
55   struct tgsi_src_register *reg,
56   unsigned swizzle,
57   unsigned component );
58
59#define TGSI_UTIL_SIGN_CLEAR    0   /* Force positive */
60#define TGSI_UTIL_SIGN_SET      1   /* Force negative */
61#define TGSI_UTIL_SIGN_TOGGLE   2   /* Negate */
62#define TGSI_UTIL_SIGN_KEEP     3   /* No change */
63
64unsigned
65tgsi_util_get_full_src_register_sign_mode(
66   const struct tgsi_full_src_register *reg,
67   unsigned component );
68
69void
70tgsi_util_set_full_src_register_sign_mode(
71   struct tgsi_full_src_register *reg,
72   unsigned sign_mode );
73
74#if defined __cplusplus
75}
76#endif
77
78#endif /* TGSI_UTIL_H */
79