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_src_register_extnegate(
109 const struct tgsi_src_register_ext_swz
*reg
,
112 switch( component
) {
128 tgsi_util_set_src_register_extnegate(
129 struct tgsi_src_register_ext_swz
*reg
,
133 switch( component
) {
135 reg
->NegateX
= negate
;
138 reg
->NegateY
= negate
;
141 reg
->NegateZ
= negate
;
144 reg
->NegateW
= negate
;
152 tgsi_util_get_full_src_register_sign_mode(
153 const struct tgsi_full_src_register
*reg
,
158 if( reg
->SrcRegisterExtMod
.Absolute
) {
159 /* Consider only the post-abs negation. */
161 if( reg
->SrcRegisterExtMod
.Negate
) {
162 sign_mode
= TGSI_UTIL_SIGN_SET
;
165 sign_mode
= TGSI_UTIL_SIGN_CLEAR
;
169 /* Accumulate the three negations. */
173 negate
= reg
->SrcRegister
.Negate
;
174 if( tgsi_util_get_src_register_extnegate( ®
->SrcRegisterExtSwz
, component
) ) {
177 if( reg
->SrcRegisterExtMod
.Negate
) {
182 sign_mode
= TGSI_UTIL_SIGN_TOGGLE
;
185 sign_mode
= TGSI_UTIL_SIGN_KEEP
;
193 tgsi_util_set_full_src_register_sign_mode(
194 struct tgsi_full_src_register
*reg
,
197 reg
->SrcRegisterExtSwz
.NegateX
= 0;
198 reg
->SrcRegisterExtSwz
.NegateY
= 0;
199 reg
->SrcRegisterExtSwz
.NegateZ
= 0;
200 reg
->SrcRegisterExtSwz
.NegateW
= 0;
204 case TGSI_UTIL_SIGN_CLEAR
:
205 reg
->SrcRegister
.Negate
= 0;
206 reg
->SrcRegisterExtMod
.Absolute
= 1;
207 reg
->SrcRegisterExtMod
.Negate
= 0;
210 case TGSI_UTIL_SIGN_SET
:
211 reg
->SrcRegister
.Negate
= 0;
212 reg
->SrcRegisterExtMod
.Absolute
= 1;
213 reg
->SrcRegisterExtMod
.Negate
= 1;
216 case TGSI_UTIL_SIGN_TOGGLE
:
217 reg
->SrcRegister
.Negate
= 1;
218 reg
->SrcRegisterExtMod
.Absolute
= 0;
219 reg
->SrcRegisterExtMod
.Negate
= 0;
222 case TGSI_UTIL_SIGN_KEEP
:
223 reg
->SrcRegister
.Negate
= 0;
224 reg
->SrcRegisterExtMod
.Absolute
= 0;
225 reg
->SrcRegisterExtMod
.Negate
= 0;