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9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
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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,
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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;
219 } else if (strncmp(option, "fragment_coord_", 15) == 0) {
221 if (state->ctx->Extensions.ARB_fragment_coord_conventions) {
222 if (strcmp(option, "origin_upper_left") == 0) {
223 state->option.OriginUpperLeft = 1;
226 else if (strcmp(option, "pixel_center_integer") == 0) {
227 state->option.PixelCenterInteger = 1;
232 } else if (strncmp(option, "ATI_", 4) == 0) {
235 if (strcmp(option, "draw_buffers") == 0) {
236 /* Don't need to check extension availability because all Mesa-based
237 * drivers support GL_ATI_draw_buffers.
239 state->option.DrawBuffers = 1;
242 } else if (strncmp(option, "NV_fragment_program", 19) == 0) {
245 /* Other NV_fragment_program strings may be supported later.
247 if (option[0] == '\0') {
248 if (state->ctx->Extensions.NV_fragment_program_option) {
249 state->option.NV_fragment = 1;
253 } else if (strncmp(option, "MESA_", 5) == 0) {
256 if (strcmp(option, "texture_array") == 0) {
257 if (state->ctx->Extensions.MESA_texture_array) {
258 state->option.TexArray = 1;