2 * Copyright © 2009 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
25 #include "main/mtypes.h"
26 #include "prog_instruction.h"
27 #include "program_parser.h"
31 * Extra assembly-level parser routines
33 * \author Ian Romanick <ian.d.romanick@intel.com>
37 _mesa_parse_instruction_suffix(const struct asm_parser_state
*state
,
39 struct prog_instruction
*inst
)
43 inst
->SaturateMode
= SATURATE_OFF
;
44 inst
->Precision
= FLOAT32
;
47 /* The first possible suffix element is the precision specifier from
48 * NV_fragment_program_option.
50 if (state
->option
.NV_fragment
) {
53 inst
->Precision
= FLOAT16
;
57 inst
->Precision
= FLOAT32
;
61 inst
->Precision
= FIXED12
;
69 /* The next possible suffix element is the condition code modifier selection
70 * from NV_fragment_program_option.
72 if (state
->option
.NV_fragment
) {
73 if (suffix
[0] == 'C') {
80 /* The final possible suffix element is the saturation selector from
81 * ARB_fragment_program.
83 if (state
->mode
== ARB_fragment
) {
84 if (strcmp(suffix
, "_SAT") == 0) {
85 inst
->SaturateMode
= SATURATE_ZERO_ONE
;
91 /* It is an error for all of the suffix string not to be consumed.
93 return suffix
[0] == '\0';
98 _mesa_parse_cc(const char *s
)
118 } else if (s
[1] == 'T') {
126 } else if (s
[1] == 'T') {
147 return ((cond
== 0) || (s
[2] != '\0')) ? 0 : cond
;
152 _mesa_ARBvp_parse_option(struct asm_parser_state
*state
, const char *option
)
154 if (strcmp(option
, "ARB_position_invariant") == 0) {
155 state
->option
.PositionInvariant
= 1;
164 _mesa_ARBfp_parse_option(struct asm_parser_state
*state
, const char *option
)
166 /* All of the options currently supported start with "ARB_". The code is
167 * currently structured with nested if-statements because eventually options
168 * that start with "NV_" will be supported. This structure will result in
169 * less churn when those options are added.
171 if (strncmp(option
, "ARB_", 4) == 0) {
172 /* Advance the pointer past the "ARB_" prefix.
177 if (strncmp(option
, "fog_", 4) == 0) {
180 if (state
->option
.Fog
== OPTION_NONE
) {
181 if (strcmp(option
, "exp") == 0) {
182 state
->option
.Fog
= OPTION_FOG_EXP
;
184 } else if (strcmp(option
, "exp2") == 0) {
185 state
->option
.Fog
= OPTION_FOG_EXP2
;
187 } else if (strcmp(option
, "linear") == 0) {
188 state
->option
.Fog
= OPTION_FOG_LINEAR
;
194 } else if (strncmp(option
, "precision_hint_", 15) == 0) {
197 if (state
->option
.PrecisionHint
== OPTION_NONE
) {
198 if (strcmp(option
, "nicest") == 0) {
199 state
->option
.PrecisionHint
= OPTION_NICEST
;
201 } else if (strcmp(option
, "fastest") == 0) {
202 state
->option
.PrecisionHint
= OPTION_FASTEST
;
208 } else if (strcmp(option
, "draw_buffers") == 0) {
209 /* Don't need to check extension availability because all Mesa-based
210 * drivers support GL_ARB_draw_buffers.
212 state
->option
.DrawBuffers
= 1;
214 } else if (strcmp(option
, "fragment_program_shadow") == 0) {
215 if (state
->ctx
->Extensions
.ARB_fragment_program_shadow
) {
216 state
->option
.Shadow
= 1;
220 } else if (strncmp(option
, "NV_fragment_program", 19) == 0) {
223 /* Other NV_fragment_program strings may be supported later.
225 if (option
[0] == '\0') {
226 if (state
->ctx
->Extensions
.NV_fragment_program_option
) {
227 state
->option
.NV_fragment
= 1;
231 } else if (strncmp(option
, "MESA_", 5) == 0) {
234 if (strcmp(option
, "texture_array") == 0) {
235 if (state
->ctx
->Extensions
.MESA_texture_array
) {
236 state
->option
.TexArray
= 1;