1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #include "util/u_debug.h"
29 #include "pipe/p_shader_tokens.h"
30 #include "tgsi_parse.h"
31 #include "tgsi_util.h"
43 union pointer_hack ph
;
46 ph
.pointer
= unaligned
;
47 ph
.uint64
= (ph
.uint64
+ 15) & ~15;
52 tgsi_util_get_src_register_swizzle(
53 const struct tgsi_src_register
*reg
,
73 tgsi_util_get_full_src_register_swizzle(
74 const struct tgsi_full_src_register
*reg
,
77 return tgsi_util_get_src_register_swizzle(
83 tgsi_util_set_src_register_swizzle(
84 struct tgsi_src_register
*reg
,
90 reg
->SwizzleX
= swizzle
;
93 reg
->SwizzleY
= swizzle
;
96 reg
->SwizzleZ
= swizzle
;
99 reg
->SwizzleW
= swizzle
;
107 tgsi_util_get_full_src_register_sign_mode(
108 const struct tgsi_full_src_register
*reg
,
113 if( reg
->Register
.Absolute
) {
114 /* Consider only the post-abs negation. */
116 if( reg
->Register
.Negate
) {
117 sign_mode
= TGSI_UTIL_SIGN_SET
;
120 sign_mode
= TGSI_UTIL_SIGN_CLEAR
;
124 if( reg
->Register
.Negate
) {
125 sign_mode
= TGSI_UTIL_SIGN_TOGGLE
;
128 sign_mode
= TGSI_UTIL_SIGN_KEEP
;
136 tgsi_util_set_full_src_register_sign_mode(
137 struct tgsi_full_src_register
*reg
,
142 case TGSI_UTIL_SIGN_CLEAR
:
143 reg
->Register
.Negate
= 0;
144 reg
->Register
.Absolute
= 1;
147 case TGSI_UTIL_SIGN_SET
:
148 reg
->Register
.Absolute
= 1;
149 reg
->Register
.Negate
= 1;
152 case TGSI_UTIL_SIGN_TOGGLE
:
153 reg
->Register
.Negate
= 1;
154 reg
->Register
.Absolute
= 0;
157 case TGSI_UTIL_SIGN_KEEP
:
158 reg
->Register
.Negate
= 0;
159 reg
->Register
.Absolute
= 0;