Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2010 Intel Corporation |
| 3 | * |
| 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: |
| 10 | * |
| 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 |
| 13 | * Software. |
| 14 | * |
| 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. |
| 22 | */ |
| 23 | |
| 24 | /** |
| 25 | * \file ir_constant_expression.cpp |
| 26 | * Evaluate and process constant valued expressions |
| 27 | * |
| 28 | * In GLSL, constant valued expressions are used in several places. These |
| 29 | * must be processed and evaluated very early in the compilation process. |
| 30 | * |
| 31 | * * Sizes of arrays |
| 32 | * * Initializers for uniforms |
| 33 | * * Initializers for \c const variables |
| 34 | */ |
| 35 | |
| 36 | #define NULL 0 |
Eric Anholt | 43ad37a | 2010-05-12 14:42:21 -0700 | [diff] [blame^] | 37 | #include <math.h> |
Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 38 | #include "ir.h" |
| 39 | #include "ir_visitor.h" |
Eric Anholt | a576f9d | 2010-03-31 16:25:12 -1000 | [diff] [blame] | 40 | #include "glsl_types.h" |
Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 41 | |
| 42 | /** |
| 43 | * Visitor class for evaluating constant expressions |
| 44 | */ |
| 45 | class ir_constant_visitor : public ir_visitor { |
| 46 | public: |
| 47 | ir_constant_visitor() |
| 48 | : value(NULL) |
| 49 | { |
| 50 | /* empty */ |
| 51 | } |
| 52 | |
| 53 | virtual ~ir_constant_visitor() |
| 54 | { |
| 55 | /* empty */ |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * \name Visit methods |
| 60 | * |
| 61 | * As typical for the visitor pattern, there must be one \c visit method for |
| 62 | * each concrete subclass of \c ir_instruction. Virtual base classes within |
| 63 | * the hierarchy should not have \c visit methods. |
| 64 | */ |
| 65 | /*@{*/ |
| 66 | virtual void visit(ir_variable *); |
Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 67 | virtual void visit(ir_function_signature *); |
| 68 | virtual void visit(ir_function *); |
| 69 | virtual void visit(ir_expression *); |
| 70 | virtual void visit(ir_swizzle *); |
Ian Romanick | c7b1046 | 2010-05-19 13:20:12 +0200 | [diff] [blame] | 71 | virtual void visit(ir_dereference_variable *); |
| 72 | virtual void visit(ir_dereference_array *); |
| 73 | virtual void visit(ir_dereference_record *); |
Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 74 | virtual void visit(ir_assignment *); |
| 75 | virtual void visit(ir_constant *); |
| 76 | virtual void visit(ir_call *); |
| 77 | virtual void visit(ir_return *); |
| 78 | virtual void visit(ir_if *); |
Ian Romanick | fad607a | 2010-04-05 16:16:07 -0700 | [diff] [blame] | 79 | virtual void visit(ir_loop *); |
Ian Romanick | f8e31e0 | 2010-04-05 16:28:15 -0700 | [diff] [blame] | 80 | virtual void visit(ir_loop_jump *); |
Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 81 | /*@}*/ |
| 82 | |
| 83 | /** |
| 84 | * Value of the constant expression. |
| 85 | * |
| 86 | * \note |
| 87 | * This field will be \c NULL if the expression is not constant valued. |
| 88 | */ |
| 89 | /* FINIHSME: This cannot hold values for constant arrays or structures. */ |
| 90 | ir_constant *value; |
| 91 | }; |
| 92 | |
| 93 | |
| 94 | ir_constant * |
| 95 | ir_instruction::constant_expression_value() |
| 96 | { |
| 97 | ir_constant_visitor visitor; |
| 98 | |
| 99 | this->accept(& visitor); |
| 100 | return visitor.value; |
| 101 | } |
| 102 | |
| 103 | |
| 104 | void |
| 105 | ir_constant_visitor::visit(ir_variable *ir) |
| 106 | { |
| 107 | (void) ir; |
| 108 | value = NULL; |
| 109 | } |
| 110 | |
| 111 | |
| 112 | void |
Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 113 | ir_constant_visitor::visit(ir_function_signature *ir) |
| 114 | { |
| 115 | (void) ir; |
| 116 | value = NULL; |
| 117 | } |
| 118 | |
| 119 | |
| 120 | void |
| 121 | ir_constant_visitor::visit(ir_function *ir) |
| 122 | { |
| 123 | (void) ir; |
| 124 | value = NULL; |
| 125 | } |
| 126 | |
Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 127 | void |
| 128 | ir_constant_visitor::visit(ir_expression *ir) |
| 129 | { |
Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 130 | value = NULL; |
Eric Anholt | a576f9d | 2010-03-31 16:25:12 -1000 | [diff] [blame] | 131 | ir_constant *op[2]; |
Eric Anholt | d98da97 | 2010-04-01 18:25:11 -1000 | [diff] [blame] | 132 | unsigned int operand, c; |
| 133 | unsigned u[16]; |
| 134 | int i[16]; |
| 135 | float f[16]; |
| 136 | bool b[16]; |
| 137 | const glsl_type *type = NULL; |
Eric Anholt | 160d092 | 2010-04-01 18:07:08 -1000 | [diff] [blame] | 138 | |
Eric Anholt | d98da97 | 2010-04-01 18:25:11 -1000 | [diff] [blame] | 139 | for (operand = 0; operand < ir->get_num_operands(); operand++) { |
| 140 | op[operand] = ir->operands[operand]->constant_expression_value(); |
| 141 | if (!op[operand]) |
Eric Anholt | 160d092 | 2010-04-01 18:07:08 -1000 | [diff] [blame] | 142 | return; |
| 143 | } |
Eric Anholt | a576f9d | 2010-03-31 16:25:12 -1000 | [diff] [blame] | 144 | |
| 145 | switch (ir->operation) { |
Eric Anholt | 528bb85 | 2010-03-31 21:09:02 -1000 | [diff] [blame] | 146 | case ir_unop_logic_not: |
Eric Anholt | d98da97 | 2010-04-01 18:25:11 -1000 | [diff] [blame] | 147 | type = ir->operands[0]->type; |
| 148 | assert(type->base_type == GLSL_TYPE_BOOL); |
| 149 | for (c = 0; c < ir->operands[0]->type->components(); c++) |
| 150 | b[c] = !op[0]->value.b[c]; |
Eric Anholt | 528bb85 | 2010-03-31 21:09:02 -1000 | [diff] [blame] | 151 | break; |
Eric Anholt | af18641 | 2010-04-06 10:53:57 -0700 | [diff] [blame] | 152 | |
| 153 | case ir_unop_f2i: |
| 154 | assert(op[0]->type->base_type == GLSL_TYPE_FLOAT); |
| 155 | type = ir->type; |
| 156 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 157 | i[c] = op[0]->value.f[c]; |
| 158 | } |
| 159 | break; |
| 160 | case ir_unop_i2f: |
| 161 | assert(op[0]->type->base_type == GLSL_TYPE_UINT || |
| 162 | op[0]->type->base_type == GLSL_TYPE_INT); |
| 163 | type = ir->type; |
| 164 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 165 | if (op[0]->type->base_type == GLSL_TYPE_INT) |
| 166 | f[c] = op[0]->value.i[c]; |
| 167 | else |
| 168 | f[c] = op[0]->value.u[c]; |
| 169 | } |
| 170 | break; |
| 171 | |
Eric Anholt | 43ad37a | 2010-05-12 14:42:21 -0700 | [diff] [blame^] | 172 | case ir_unop_neg: |
| 173 | type = ir->type; |
| 174 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 175 | switch (type->base_type) { |
| 176 | case GLSL_TYPE_UINT: |
| 177 | u[c] = -op[0]->value.u[c]; |
| 178 | break; |
| 179 | case GLSL_TYPE_INT: |
| 180 | i[c] = -op[0]->value.i[c]; |
| 181 | break; |
| 182 | case GLSL_TYPE_FLOAT: |
| 183 | f[c] = -op[0]->value.f[c]; |
| 184 | break; |
| 185 | default: |
| 186 | assert(0); |
| 187 | } |
| 188 | } |
| 189 | break; |
| 190 | |
| 191 | case ir_unop_abs: |
| 192 | assert(op[0]->type->base_type == GLSL_TYPE_FLOAT); |
| 193 | type = ir->type; |
| 194 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 195 | switch (type->base_type) { |
| 196 | case GLSL_TYPE_UINT: |
| 197 | u[c] = op[0]->value.u[c]; |
| 198 | break; |
| 199 | case GLSL_TYPE_INT: |
| 200 | i[c] = op[0]->value.i[c]; |
| 201 | if (i[c] < 0) |
| 202 | i[c] = -i[c]; |
| 203 | break; |
| 204 | case GLSL_TYPE_FLOAT: |
| 205 | f[c] = fabs(op[0]->value.f[c]); |
| 206 | break; |
| 207 | default: |
| 208 | assert(0); |
| 209 | } |
| 210 | } |
| 211 | break; |
| 212 | |
| 213 | case ir_unop_rcp: |
| 214 | assert(op[0]->type->base_type == GLSL_TYPE_FLOAT); |
| 215 | type = ir->type; |
| 216 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 217 | switch (type->base_type) { |
| 218 | case GLSL_TYPE_UINT: |
| 219 | if (op[0]->value.u[c] != 0.0) |
| 220 | u[c] = 1 / op[0]->value.u[c]; |
| 221 | break; |
| 222 | case GLSL_TYPE_INT: |
| 223 | if (op[0]->value.i[c] != 0.0) |
| 224 | i[c] = 1 / op[0]->value.i[c]; |
| 225 | break; |
| 226 | case GLSL_TYPE_FLOAT: |
| 227 | if (op[0]->value.f[c] != 0.0) |
| 228 | f[c] = 1.0 / op[0]->value.f[c]; |
| 229 | break; |
| 230 | default: |
| 231 | assert(0); |
| 232 | } |
| 233 | } |
| 234 | break; |
| 235 | |
| 236 | case ir_unop_rsq: |
| 237 | assert(op[0]->type->base_type == GLSL_TYPE_FLOAT); |
| 238 | type = ir->type; |
| 239 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 240 | f[c] = 1.0 / sqrtf(op[0]->value.f[c]); |
| 241 | } |
| 242 | break; |
| 243 | |
| 244 | case ir_unop_sqrt: |
| 245 | assert(op[0]->type->base_type == GLSL_TYPE_FLOAT); |
| 246 | type = ir->type; |
| 247 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 248 | f[c] = sqrtf(op[0]->value.f[c]); |
| 249 | } |
| 250 | break; |
| 251 | |
| 252 | case ir_unop_exp: |
| 253 | assert(op[0]->type->base_type == GLSL_TYPE_FLOAT); |
| 254 | type = ir->type; |
| 255 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 256 | f[c] = expf(op[0]->value.f[c]); |
| 257 | } |
| 258 | break; |
| 259 | |
| 260 | case ir_unop_log: |
| 261 | assert(op[0]->type->base_type == GLSL_TYPE_FLOAT); |
| 262 | type = ir->type; |
| 263 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 264 | f[c] = logf(op[0]->value.f[c]); |
| 265 | } |
| 266 | break; |
| 267 | |
Eric Anholt | d251b92 | 2010-04-01 18:35:42 -1000 | [diff] [blame] | 268 | case ir_binop_add: |
| 269 | if (ir->operands[0]->type == ir->operands[1]->type) { |
| 270 | type = ir->operands[0]->type; |
| 271 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 272 | switch (ir->operands[0]->type->base_type) { |
| 273 | case GLSL_TYPE_UINT: |
| 274 | u[c] = op[0]->value.u[c] + op[1]->value.u[c]; |
| 275 | break; |
| 276 | case GLSL_TYPE_INT: |
| 277 | i[c] = op[0]->value.i[c] + op[1]->value.i[c]; |
| 278 | break; |
| 279 | case GLSL_TYPE_FLOAT: |
| 280 | f[c] = op[0]->value.f[c] + op[1]->value.f[c]; |
| 281 | break; |
| 282 | default: |
| 283 | assert(0); |
| 284 | } |
| 285 | } |
| 286 | } |
| 287 | break; |
| 288 | case ir_binop_sub: |
| 289 | if (ir->operands[0]->type == ir->operands[1]->type) { |
| 290 | type = ir->operands[0]->type; |
| 291 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 292 | switch (ir->operands[0]->type->base_type) { |
| 293 | case GLSL_TYPE_UINT: |
| 294 | u[c] = op[0]->value.u[c] - op[1]->value.u[c]; |
| 295 | break; |
| 296 | case GLSL_TYPE_INT: |
| 297 | i[c] = op[0]->value.i[c] - op[1]->value.i[c]; |
| 298 | break; |
| 299 | case GLSL_TYPE_FLOAT: |
| 300 | f[c] = op[0]->value.f[c] - op[1]->value.f[c]; |
| 301 | break; |
| 302 | default: |
| 303 | assert(0); |
| 304 | } |
| 305 | } |
| 306 | } |
| 307 | break; |
Eric Anholt | a576f9d | 2010-03-31 16:25:12 -1000 | [diff] [blame] | 308 | case ir_binop_mul: |
Eric Anholt | d98da97 | 2010-04-01 18:25:11 -1000 | [diff] [blame] | 309 | if (ir->operands[0]->type == ir->operands[1]->type && |
| 310 | !ir->operands[0]->type->is_matrix()) { |
| 311 | type = ir->operands[0]->type; |
| 312 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 313 | switch (ir->operands[0]->type->base_type) { |
| 314 | case GLSL_TYPE_UINT: |
| 315 | u[c] = op[0]->value.u[c] * op[1]->value.u[c]; |
| 316 | break; |
| 317 | case GLSL_TYPE_INT: |
| 318 | i[c] = op[0]->value.i[c] * op[1]->value.i[c]; |
| 319 | break; |
| 320 | case GLSL_TYPE_FLOAT: |
| 321 | f[c] = op[0]->value.f[c] * op[1]->value.f[c]; |
| 322 | break; |
| 323 | default: |
| 324 | assert(0); |
| 325 | } |
Eric Anholt | a576f9d | 2010-03-31 16:25:12 -1000 | [diff] [blame] | 326 | } |
| 327 | } |
| 328 | break; |
Eric Anholt | d251b92 | 2010-04-01 18:35:42 -1000 | [diff] [blame] | 329 | case ir_binop_div: |
| 330 | if (ir->operands[0]->type == ir->operands[1]->type) { |
| 331 | type = ir->operands[0]->type; |
| 332 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 333 | switch (ir->operands[0]->type->base_type) { |
| 334 | case GLSL_TYPE_UINT: |
| 335 | u[c] = op[0]->value.u[c] / op[1]->value.u[c]; |
| 336 | break; |
| 337 | case GLSL_TYPE_INT: |
| 338 | i[c] = op[0]->value.i[c] / op[1]->value.i[c]; |
| 339 | break; |
| 340 | case GLSL_TYPE_FLOAT: |
| 341 | f[c] = op[0]->value.f[c] / op[1]->value.f[c]; |
| 342 | break; |
| 343 | default: |
| 344 | assert(0); |
| 345 | } |
| 346 | } |
| 347 | } |
| 348 | break; |
Eric Anholt | a576f9d | 2010-03-31 16:25:12 -1000 | [diff] [blame] | 349 | case ir_binop_logic_and: |
Eric Anholt | d98da97 | 2010-04-01 18:25:11 -1000 | [diff] [blame] | 350 | type = ir->operands[0]->type; |
| 351 | assert(type->base_type == GLSL_TYPE_BOOL); |
| 352 | for (c = 0; c < ir->operands[0]->type->components(); c++) |
| 353 | b[c] = op[0]->value.b[c] && op[1]->value.b[c]; |
Eric Anholt | a576f9d | 2010-03-31 16:25:12 -1000 | [diff] [blame] | 354 | break; |
Eric Anholt | d251b92 | 2010-04-01 18:35:42 -1000 | [diff] [blame] | 355 | case ir_binop_logic_xor: |
| 356 | type = ir->operands[0]->type; |
| 357 | assert(type->base_type == GLSL_TYPE_BOOL); |
| 358 | for (c = 0; c < ir->operands[0]->type->components(); c++) |
| 359 | b[c] = op[0]->value.b[c] ^ op[1]->value.b[c]; |
| 360 | break; |
Eric Anholt | a576f9d | 2010-03-31 16:25:12 -1000 | [diff] [blame] | 361 | case ir_binop_logic_or: |
Eric Anholt | d98da97 | 2010-04-01 18:25:11 -1000 | [diff] [blame] | 362 | type = ir->operands[0]->type; |
| 363 | assert(type->base_type == GLSL_TYPE_BOOL); |
| 364 | for (c = 0; c < ir->operands[0]->type->components(); c++) |
| 365 | b[c] = op[0]->value.b[c] || op[1]->value.b[c]; |
Eric Anholt | a576f9d | 2010-03-31 16:25:12 -1000 | [diff] [blame] | 366 | break; |
Eric Anholt | 85171c2 | 2010-04-06 09:55:45 -0700 | [diff] [blame] | 367 | |
| 368 | case ir_binop_less: |
| 369 | type = glsl_type::bool_type; |
| 370 | switch (ir->operands[0]->type->base_type) { |
| 371 | case GLSL_TYPE_UINT: |
| 372 | b[0] = op[0]->value.u[0] < op[1]->value.u[0]; |
| 373 | break; |
| 374 | case GLSL_TYPE_INT: |
| 375 | b[0] = op[0]->value.i[0] < op[1]->value.i[0]; |
| 376 | break; |
| 377 | case GLSL_TYPE_FLOAT: |
| 378 | b[0] = op[0]->value.f[0] < op[1]->value.f[0]; |
| 379 | break; |
| 380 | default: |
| 381 | assert(0); |
| 382 | } |
| 383 | break; |
| 384 | case ir_binop_greater: |
| 385 | type = glsl_type::bool_type; |
| 386 | switch (ir->operands[0]->type->base_type) { |
| 387 | case GLSL_TYPE_UINT: |
| 388 | b[0] = op[0]->value.u[0] > op[1]->value.u[0]; |
| 389 | break; |
| 390 | case GLSL_TYPE_INT: |
| 391 | b[0] = op[0]->value.i[0] > op[1]->value.i[0]; |
| 392 | break; |
| 393 | case GLSL_TYPE_FLOAT: |
| 394 | b[0] = op[0]->value.f[0] > op[1]->value.f[0]; |
| 395 | break; |
| 396 | default: |
| 397 | assert(0); |
| 398 | } |
| 399 | break; |
| 400 | case ir_binop_lequal: |
| 401 | type = glsl_type::bool_type; |
| 402 | switch (ir->operands[0]->type->base_type) { |
| 403 | case GLSL_TYPE_UINT: |
| 404 | b[0] = op[0]->value.u[0] <= op[1]->value.u[0]; |
| 405 | break; |
| 406 | case GLSL_TYPE_INT: |
| 407 | b[0] = op[0]->value.i[0] <= op[1]->value.i[0]; |
| 408 | break; |
| 409 | case GLSL_TYPE_FLOAT: |
| 410 | b[0] = op[0]->value.f[0] <= op[1]->value.f[0]; |
| 411 | break; |
| 412 | default: |
| 413 | assert(0); |
| 414 | } |
| 415 | break; |
| 416 | case ir_binop_gequal: |
| 417 | type = glsl_type::bool_type; |
| 418 | switch (ir->operands[0]->type->base_type) { |
| 419 | case GLSL_TYPE_UINT: |
| 420 | b[0] = op[0]->value.u[0] >= op[1]->value.u[0]; |
| 421 | break; |
| 422 | case GLSL_TYPE_INT: |
| 423 | b[0] = op[0]->value.i[0] >= op[1]->value.i[0]; |
| 424 | break; |
| 425 | case GLSL_TYPE_FLOAT: |
| 426 | b[0] = op[0]->value.f[0] >= op[1]->value.f[0]; |
| 427 | break; |
| 428 | default: |
| 429 | assert(0); |
| 430 | } |
| 431 | break; |
| 432 | |
Eric Anholt | ec1949e | 2010-04-06 10:02:27 -0700 | [diff] [blame] | 433 | case ir_binop_equal: |
| 434 | if (ir->operands[0]->type == ir->operands[1]->type) { |
| 435 | type = glsl_type::bool_type; |
| 436 | b[0] = true; |
| 437 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 438 | switch (ir->operands[0]->type->base_type) { |
| 439 | case GLSL_TYPE_UINT: |
| 440 | b[0] = b[0] && op[0]->value.u[c] == op[1]->value.u[c]; |
| 441 | break; |
| 442 | case GLSL_TYPE_INT: |
| 443 | b[0] = b[0] && op[0]->value.i[c] == op[1]->value.i[c]; |
| 444 | break; |
| 445 | case GLSL_TYPE_FLOAT: |
| 446 | b[0] = b[0] && op[0]->value.f[c] == op[1]->value.f[c]; |
| 447 | break; |
Ian Romanick | 77cce64 | 2010-04-07 16:48:42 -0700 | [diff] [blame] | 448 | case GLSL_TYPE_BOOL: |
| 449 | b[0] = b[0] && op[0]->value.b[c] == op[1]->value.b[c]; |
| 450 | break; |
Eric Anholt | ec1949e | 2010-04-06 10:02:27 -0700 | [diff] [blame] | 451 | default: |
| 452 | assert(0); |
| 453 | } |
| 454 | } |
| 455 | } |
| 456 | break; |
| 457 | case ir_binop_nequal: |
| 458 | if (ir->operands[0]->type == ir->operands[1]->type) { |
| 459 | type = glsl_type::bool_type; |
| 460 | b[0] = false; |
| 461 | for (c = 0; c < ir->operands[0]->type->components(); c++) { |
| 462 | switch (ir->operands[0]->type->base_type) { |
| 463 | case GLSL_TYPE_UINT: |
| 464 | b[0] = b[0] || op[0]->value.u[c] != op[1]->value.u[c]; |
| 465 | break; |
| 466 | case GLSL_TYPE_INT: |
| 467 | b[0] = b[0] || op[0]->value.i[c] != op[1]->value.i[c]; |
| 468 | break; |
| 469 | case GLSL_TYPE_FLOAT: |
| 470 | b[0] = b[0] || op[0]->value.f[c] != op[1]->value.f[c]; |
| 471 | break; |
Ian Romanick | 77cce64 | 2010-04-07 16:48:42 -0700 | [diff] [blame] | 472 | case GLSL_TYPE_BOOL: |
| 473 | b[0] = b[0] || op[0]->value.b[c] != op[1]->value.b[c]; |
| 474 | break; |
Eric Anholt | ec1949e | 2010-04-06 10:02:27 -0700 | [diff] [blame] | 475 | default: |
| 476 | assert(0); |
| 477 | } |
| 478 | } |
| 479 | } |
| 480 | break; |
| 481 | |
Eric Anholt | a576f9d | 2010-03-31 16:25:12 -1000 | [diff] [blame] | 482 | default: |
| 483 | break; |
| 484 | } |
Eric Anholt | d98da97 | 2010-04-01 18:25:11 -1000 | [diff] [blame] | 485 | |
| 486 | if (type) { |
| 487 | switch (type->base_type) { |
| 488 | case GLSL_TYPE_UINT: |
| 489 | value = new ir_constant(type, u); |
| 490 | break; |
| 491 | case GLSL_TYPE_INT: |
| 492 | value = new ir_constant(type, i); |
| 493 | break; |
| 494 | case GLSL_TYPE_FLOAT: |
| 495 | value = new ir_constant(type, f); |
| 496 | break; |
| 497 | case GLSL_TYPE_BOOL: |
| 498 | value = new ir_constant(type, b); |
| 499 | break; |
| 500 | } |
| 501 | } |
Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 502 | } |
| 503 | |
| 504 | |
| 505 | void |
| 506 | ir_constant_visitor::visit(ir_swizzle *ir) |
| 507 | { |
| 508 | (void) ir; |
| 509 | value = NULL; |
| 510 | } |
| 511 | |
| 512 | |
| 513 | void |
Ian Romanick | c7b1046 | 2010-05-19 13:20:12 +0200 | [diff] [blame] | 514 | ir_constant_visitor::visit(ir_dereference_variable *ir) |
Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 515 | { |
Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 516 | value = NULL; |
Eric Anholt | 326c676 | 2010-04-06 10:30:54 -0700 | [diff] [blame] | 517 | |
Ian Romanick | c7b1046 | 2010-05-19 13:20:12 +0200 | [diff] [blame] | 518 | ir_variable *var = ir->variable_referenced(); |
| 519 | if (var && var->constant_value) |
| 520 | value = new ir_constant(ir->type, &var->constant_value->value); |
| 521 | } |
| 522 | |
| 523 | |
| 524 | void |
| 525 | ir_constant_visitor::visit(ir_dereference_array *ir) |
| 526 | { |
Ian Romanick | 36ea286 | 2010-05-19 13:52:29 +0200 | [diff] [blame] | 527 | (void) ir; |
Ian Romanick | c7b1046 | 2010-05-19 13:20:12 +0200 | [diff] [blame] | 528 | value = NULL; |
| 529 | /* FINISHME: Other dereference modes. */ |
| 530 | } |
| 531 | |
| 532 | |
| 533 | void |
| 534 | ir_constant_visitor::visit(ir_dereference_record *ir) |
| 535 | { |
Ian Romanick | 36ea286 | 2010-05-19 13:52:29 +0200 | [diff] [blame] | 536 | (void) ir; |
Ian Romanick | c7b1046 | 2010-05-19 13:20:12 +0200 | [diff] [blame] | 537 | value = NULL; |
Eric Anholt | 326c676 | 2010-04-06 10:30:54 -0700 | [diff] [blame] | 538 | /* FINISHME: Other dereference modes. */ |
Ian Romanick | 1cf43a4 | 2010-03-30 16:56:50 -0700 | [diff] [blame] | 539 | } |
| 540 | |
| 541 | |
| 542 | void |
| 543 | ir_constant_visitor::visit(ir_assignment *ir) |
| 544 | { |
| 545 | (void) ir; |
| 546 | value = NULL; |
| 547 | } |
| 548 | |
| 549 | |
| 550 | void |
| 551 | ir_constant_visitor::visit(ir_constant *ir) |
| 552 | { |
| 553 | value = ir; |
| 554 | } |
| 555 | |
| 556 | |
| 557 | void |
| 558 | ir_constant_visitor::visit(ir_call *ir) |
| 559 | { |
| 560 | (void) ir; |
| 561 | value = NULL; |
| 562 | } |
| 563 | |
| 564 | |
| 565 | void |
| 566 | ir_constant_visitor::visit(ir_return *ir) |
| 567 | { |
| 568 | (void) ir; |
| 569 | value = NULL; |
| 570 | } |
| 571 | |
| 572 | |
| 573 | void |
| 574 | ir_constant_visitor::visit(ir_if *ir) |
| 575 | { |
| 576 | (void) ir; |
| 577 | value = NULL; |
| 578 | } |
Ian Romanick | fad607a | 2010-04-05 16:16:07 -0700 | [diff] [blame] | 579 | |
| 580 | |
| 581 | void |
| 582 | ir_constant_visitor::visit(ir_loop *ir) |
| 583 | { |
| 584 | (void) ir; |
| 585 | value = NULL; |
| 586 | } |
Ian Romanick | f8e31e0 | 2010-04-05 16:28:15 -0700 | [diff] [blame] | 587 | |
| 588 | |
| 589 | void |
| 590 | ir_constant_visitor::visit(ir_loop_jump *ir) |
| 591 | { |
| 592 | (void) ir; |
| 593 | value = NULL; |
| 594 | } |