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| Rev | Author | Line No. | Line |
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| 1901 | serge | 1 | /* |
| 2 | * Copyright © 2009 Intel Corporation |
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| 3 | * |
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 5 | * copy of this software and associated documentation files (the "Software"), |
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| 6 | * to deal in the Software without restriction, including without limitation |
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| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 9 | * Software is furnished to do so, subject to the following conditions: |
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| 10 | * |
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| 11 | * The above copyright notice and this permission notice (including the next |
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| 12 | * paragraph) shall be included in all copies or substantial portions of the |
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| 13 | * Software. |
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| 14 | * |
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| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 21 | * DEALINGS IN THE SOFTWARE. |
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| 22 | */ |
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| 23 | |||
| 24 | #include |
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| 25 | #include "main/mtypes.h" |
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| 26 | #include "prog_instruction.h" |
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| 27 | #include "program_parser.h" |
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| 28 | |||
| 29 | |||
| 30 | /** |
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| 31 | * Extra assembly-level parser routines |
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| 32 | * |
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| 33 | * \author Ian Romanick |
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| 34 | */ |
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| 35 | |||
| 36 | int |
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| 37 | _mesa_parse_instruction_suffix(const struct asm_parser_state *state, |
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| 38 | const char *suffix, |
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| 39 | struct prog_instruction *inst) |
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| 40 | { |
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| 41 | inst->CondUpdate = 0; |
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| 42 | inst->CondDst = 0; |
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| 43 | inst->SaturateMode = SATURATE_OFF; |
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| 44 | inst->Precision = FLOAT32; |
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| 45 | |||
| 46 | |||
| 47 | /* The first possible suffix element is the precision specifier from |
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| 48 | * NV_fragment_program_option. |
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| 49 | */ |
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| 50 | if (state->option.NV_fragment) { |
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| 51 | switch (suffix[0]) { |
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| 52 | case 'H': |
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| 53 | inst->Precision = FLOAT16; |
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| 54 | suffix++; |
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| 55 | break; |
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| 56 | case 'R': |
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| 57 | inst->Precision = FLOAT32; |
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| 58 | suffix++; |
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| 59 | break; |
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| 60 | case 'X': |
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| 61 | inst->Precision = FIXED12; |
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| 62 | suffix++; |
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| 63 | break; |
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| 64 | default: |
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| 65 | break; |
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| 66 | } |
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| 67 | } |
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| 68 | |||
| 69 | /* The next possible suffix element is the condition code modifier selection |
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| 70 | * from NV_fragment_program_option. |
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| 71 | */ |
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| 72 | if (state->option.NV_fragment) { |
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| 73 | if (suffix[0] == 'C') { |
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| 74 | inst->CondUpdate = 1; |
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| 75 | suffix++; |
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| 76 | } |
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| 77 | } |
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| 78 | |||
| 79 | |||
| 80 | /* The final possible suffix element is the saturation selector from |
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| 81 | * ARB_fragment_program. |
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| 82 | */ |
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| 83 | if (state->mode == ARB_fragment) { |
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| 84 | if (strcmp(suffix, "_SAT") == 0) { |
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| 85 | inst->SaturateMode = SATURATE_ZERO_ONE; |
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| 86 | suffix += 4; |
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| 87 | } |
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| 88 | } |
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| 89 | |||
| 90 | |||
| 91 | /* It is an error for all of the suffix string not to be consumed. |
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| 92 | */ |
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| 93 | return suffix[0] == '\0'; |
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| 94 | } |
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| 95 | |||
| 96 | |||
| 97 | int |
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| 98 | _mesa_parse_cc(const char *s) |
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| 99 | { |
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| 100 | int cond = 0; |
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| 101 | |||
| 102 | switch (s[0]) { |
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| 103 | case 'E': |
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| 104 | if (s[1] == 'Q') { |
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| 105 | cond = COND_EQ; |
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| 106 | } |
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| 107 | break; |
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| 108 | |||
| 109 | case 'F': |
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| 110 | if (s[1] == 'L') { |
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| 111 | cond = COND_FL; |
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| 112 | } |
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| 113 | break; |
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| 114 | |||
| 115 | case 'G': |
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| 116 | if (s[1] == 'E') { |
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| 117 | cond = COND_GE; |
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| 118 | } else if (s[1] == 'T') { |
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| 119 | cond = COND_GT; |
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| 120 | } |
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| 121 | break; |
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| 122 | |||
| 123 | case 'L': |
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| 124 | if (s[1] == 'E') { |
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| 125 | cond = COND_LE; |
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| 126 | } else if (s[1] == 'T') { |
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| 127 | cond = COND_LT; |
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| 128 | } |
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| 129 | break; |
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| 130 | |||
| 131 | case 'N': |
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| 132 | if (s[1] == 'E') { |
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| 133 | cond = COND_NE; |
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| 134 | } |
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| 135 | break; |
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| 136 | |||
| 137 | case 'T': |
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| 138 | if (s[1] == 'R') { |
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| 139 | cond = COND_TR; |
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| 140 | } |
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| 141 | break; |
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| 142 | |||
| 143 | default: |
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| 144 | break; |
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| 145 | } |
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| 146 | |||
| 147 | return ((cond == 0) || (s[2] != '\0')) ? 0 : cond; |
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| 148 | } |
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| 149 | |||
| 150 | |||
| 151 | int |
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| 152 | _mesa_ARBvp_parse_option(struct asm_parser_state *state, const char *option) |
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| 153 | { |
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| 154 | if (strcmp(option, "ARB_position_invariant") == 0) { |
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| 155 | state->option.PositionInvariant = 1; |
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| 156 | return 1; |
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| 157 | } |
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| 158 | |||
| 159 | return 0; |
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| 160 | } |
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| 161 | |||
| 162 | |||
| 163 | int |
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| 164 | _mesa_ARBfp_parse_option(struct asm_parser_state *state, const char *option) |
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| 165 | { |
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| 166 | /* All of the options currently supported start with "ARB_". The code is |
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| 167 | * currently structured with nested if-statements because eventually options |
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| 168 | * that start with "NV_" will be supported. This structure will result in |
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| 169 | * less churn when those options are added. |
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| 170 | */ |
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| 171 | if (strncmp(option, "ARB_", 4) == 0) { |
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| 172 | /* Advance the pointer past the "ARB_" prefix. |
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| 173 | */ |
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| 174 | option += 4; |
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| 175 | |||
| 176 | |||
| 177 | if (strncmp(option, "fog_", 4) == 0) { |
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| 178 | option += 4; |
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| 179 | |||
| 180 | if (state->option.Fog == OPTION_NONE) { |
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| 181 | if (strcmp(option, "exp") == 0) { |
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| 182 | state->option.Fog = OPTION_FOG_EXP; |
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| 183 | return 1; |
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| 184 | } else if (strcmp(option, "exp2") == 0) { |
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| 185 | state->option.Fog = OPTION_FOG_EXP2; |
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| 186 | return 1; |
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| 187 | } else if (strcmp(option, "linear") == 0) { |
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| 188 | state->option.Fog = OPTION_FOG_LINEAR; |
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| 189 | return 1; |
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| 190 | } |
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| 191 | } |
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| 192 | |||
| 193 | return 0; |
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| 194 | } else if (strncmp(option, "precision_hint_", 15) == 0) { |
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| 195 | option += 15; |
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| 196 | |||
| 197 | if (state->option.PrecisionHint == OPTION_NONE) { |
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| 198 | if (strcmp(option, "nicest") == 0) { |
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| 199 | state->option.PrecisionHint = OPTION_NICEST; |
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| 200 | return 1; |
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| 201 | } else if (strcmp(option, "fastest") == 0) { |
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| 202 | state->option.PrecisionHint = OPTION_FASTEST; |
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| 203 | return 1; |
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| 204 | } |
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| 205 | } |
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| 206 | |||
| 207 | return 0; |
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| 208 | } else if (strcmp(option, "draw_buffers") == 0) { |
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| 209 | /* Don't need to check extension availability because all Mesa-based |
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| 210 | * drivers support GL_ARB_draw_buffers. |
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| 211 | */ |
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| 212 | state->option.DrawBuffers = 1; |
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| 213 | return 1; |
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| 214 | } else if (strcmp(option, "fragment_program_shadow") == 0) { |
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| 215 | if (state->ctx->Extensions.ARB_fragment_program_shadow) { |
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| 216 | state->option.Shadow = 1; |
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| 217 | return 1; |
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| 218 | } |
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| 219 | } else if (strncmp(option, "fragment_coord_", 15) == 0) { |
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| 220 | option += 15; |
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| 221 | if (state->ctx->Extensions.ARB_fragment_coord_conventions) { |
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| 222 | if (strcmp(option, "origin_upper_left") == 0) { |
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| 223 | state->option.OriginUpperLeft = 1; |
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| 224 | return 1; |
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| 225 | } |
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| 226 | else if (strcmp(option, "pixel_center_integer") == 0) { |
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| 227 | state->option.PixelCenterInteger = 1; |
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| 228 | return 1; |
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| 229 | } |
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| 230 | } |
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| 231 | } |
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| 232 | } else if (strncmp(option, "NV_fragment_program", 19) == 0) { |
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| 233 | option += 19; |
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| 234 | |||
| 235 | /* Other NV_fragment_program strings may be supported later. |
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| 236 | */ |
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| 237 | if (option[0] == '\0') { |
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| 238 | if (state->ctx->Extensions.NV_fragment_program_option) { |
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| 239 | state->option.NV_fragment = 1; |
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| 240 | return 1; |
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| 241 | } |
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| 242 | } |
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| 243 | } else if (strncmp(option, "MESA_", 5) == 0) { |
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| 244 | option += 5; |
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| 245 | |||
| 246 | if (strcmp(option, "texture_array") == 0) { |
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| 247 | if (state->ctx->Extensions.MESA_texture_array) { |
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| 248 | state->option.TexArray = 1; |
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| 249 | return 1; |
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| 250 | } |
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| 251 | } |
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| 252 | } |
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| 253 | |||
| 254 | return 0; |
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| 255 | } |