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_build.h"
32 #include "tgsi_util.h"
44 union pointer_hack ph
;
47 ph
.pointer
= unaligned
;
48 ph
.uint64
= (ph
.uint64
+ 15) & ~15;
53 tgsi_util_get_src_register_swizzle(
54 const struct tgsi_src_register
*reg
,
74 tgsi_util_get_full_src_register_swizzle(
75 const struct tgsi_full_src_register
*reg
,
78 return tgsi_util_get_src_register_swizzle(
84 tgsi_util_set_src_register_swizzle(
85 struct tgsi_src_register
*reg
,
91 reg
->SwizzleX
= swizzle
;
94 reg
->SwizzleY
= swizzle
;
97 reg
->SwizzleZ
= swizzle
;
100 reg
->SwizzleW
= swizzle
;
108 tgsi_util_get_full_src_register_sign_mode(
109 const struct tgsi_full_src_register
*reg
,
114 if( reg
->SrcRegisterExtMod
.Absolute
) {
115 /* Consider only the post-abs negation. */
117 if( reg
->SrcRegisterExtMod
.Negate
) {
118 sign_mode
= TGSI_UTIL_SIGN_SET
;
121 sign_mode
= TGSI_UTIL_SIGN_CLEAR
;
125 /* Accumulate the three negations. */
129 negate
= reg
->SrcRegister
.Negate
;
131 if( reg
->SrcRegisterExtMod
.Negate
) {
136 sign_mode
= TGSI_UTIL_SIGN_TOGGLE
;
139 sign_mode
= TGSI_UTIL_SIGN_KEEP
;
147 tgsi_util_set_full_src_register_sign_mode(
148 struct tgsi_full_src_register
*reg
,
153 case TGSI_UTIL_SIGN_CLEAR
:
154 reg
->SrcRegister
.Negate
= 0;
155 reg
->SrcRegisterExtMod
.Absolute
= 1;
156 reg
->SrcRegisterExtMod
.Negate
= 0;
159 case TGSI_UTIL_SIGN_SET
:
160 reg
->SrcRegister
.Negate
= 0;
161 reg
->SrcRegisterExtMod
.Absolute
= 1;
162 reg
->SrcRegisterExtMod
.Negate
= 1;
165 case TGSI_UTIL_SIGN_TOGGLE
:
166 reg
->SrcRegister
.Negate
= 1;
167 reg
->SrcRegisterExtMod
.Absolute
= 0;
168 reg
->SrcRegisterExtMod
.Negate
= 0;
171 case TGSI_UTIL_SIGN_KEEP
:
172 reg
->SrcRegister
.Negate
= 0;
173 reg
->SrcRegisterExtMod
.Absolute
= 0;
174 reg
->SrcRegisterExtMod
.Negate
= 0;