tgsi_util.h revision 01e04c3f 
1/**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
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 VMWARE 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#include "pipe/p_shader_tokens.h"
32
33#if defined __cplusplus
34extern "C" {
35#endif
36
37struct tgsi_src_register;
38struct tgsi_full_src_register;
39struct tgsi_full_instruction;
40
41void *
42tgsi_align_128bit(void *unaligned);
43
44unsigned
45tgsi_util_get_src_register_swizzle(const struct tgsi_src_register *reg,
46                                   unsigned component);
47
48
49unsigned
50tgsi_util_get_full_src_register_swizzle(
51   const struct tgsi_full_src_register *reg,
52   unsigned component );
53
54void
55tgsi_util_set_src_register_swizzle(struct tgsi_src_register *reg,
56                                   unsigned swizzle,
57                                   unsigned component);
58
59
60#define TGSI_UTIL_SIGN_CLEAR    0   /* Force positive */
61#define TGSI_UTIL_SIGN_SET      1   /* Force negative */
62#define TGSI_UTIL_SIGN_TOGGLE   2   /* Negate */
63#define TGSI_UTIL_SIGN_KEEP     3   /* No change */
64
65unsigned
66tgsi_util_get_full_src_register_sign_mode(
67   const struct tgsi_full_src_register *reg,
68   unsigned component);
69
70void
71tgsi_util_set_full_src_register_sign_mode(struct tgsi_full_src_register *reg,
72                                          unsigned sign_mode);
73
74unsigned
75tgsi_util_get_inst_usage_mask(const struct tgsi_full_instruction *inst,
76                              unsigned src_idx);
77
78struct tgsi_src_register
79tgsi_util_get_src_from_ind(const struct tgsi_ind_register *reg);
80
81int
82tgsi_util_get_texture_coord_dim(enum tgsi_texture_type tgsi_tex);
83
84int
85tgsi_util_get_shadow_ref_src_index(enum tgsi_texture_type tgsi_tex);
86
87boolean
88tgsi_is_shadow_target(enum tgsi_texture_type target);
89
90
91static inline boolean
92tgsi_is_msaa_target(enum tgsi_texture_type target)
93{
94   return (target == TGSI_TEXTURE_2D_MSAA ||
95           target == TGSI_TEXTURE_2D_ARRAY_MSAA);
96}
97
98static inline bool
99tgsi_is_array_sampler(enum tgsi_texture_type target)
100{
101   return target == TGSI_TEXTURE_1D_ARRAY ||
102          target == TGSI_TEXTURE_SHADOW1D_ARRAY ||
103          target == TGSI_TEXTURE_2D_ARRAY ||
104          target == TGSI_TEXTURE_SHADOW2D_ARRAY ||
105          target == TGSI_TEXTURE_CUBE_ARRAY ||
106          target == TGSI_TEXTURE_SHADOWCUBE_ARRAY ||
107          target == TGSI_TEXTURE_2D_ARRAY_MSAA;
108}
109
110#if defined __cplusplus
111}
112#endif
113
114#endif /* TGSI_UTIL_H */
115