1 /* 2 * Copyright 2008 Corbin Simpson <MostAwesomeDude (at) gmail.com> 3 * Joakim Sindholt <opensource (at) zhasha.com> 4 * Copyright 2009 Marek Olk <maraeo (at) gmail.com> 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * on the rights to use, copy, modify, merge, publish, distribute, sub 10 * license, and/or sell copies of the Software, and to permit persons to whom 11 * the Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 23 * USE OR OTHER DEALINGS IN THE SOFTWARE. */ 24 25 #include "util/u_format.h" 26 #include "util/u_math.h" 27 #include "util/u_memory.h" 28 29 #include "tgsi/tgsi_dump.h" 30 #include "tgsi/tgsi_ureg.h" 31 32 #include "r300_cb.h" 33 #include "r300_context.h" 34 #include "r300_emit.h" 35 #include "r300_screen.h" 36 #include "r300_fs.h" 37 #include "r300_reg.h" 38 #include "r300_texture.h" 39 #include "r300_tgsi_to_rc.h" 40 41 #include "compiler/radeon_compiler.h" 42 43 /* Convert info about FS input semantics to r300_shader_semantics. */ 44 void r300_shader_read_fs_inputs(struct tgsi_shader_info* info, 45 struct r300_shader_semantics* fs_inputs) 46 { 47 int i; 48 unsigned index; 49 50 r300_shader_semantics_reset(fs_inputs); 51 52 for (i = 0; i < info->num_inputs; i++) { 53 index = info->input_semantic_index[i]; 54 55 switch (info->input_semantic_name[i]) { 56 case TGSI_SEMANTIC_COLOR: 57 assert(index < ATTR_COLOR_COUNT); 58 fs_inputs->color[index] = i; 59 break; 60 61 case TGSI_SEMANTIC_GENERIC: 62 assert(index < ATTR_GENERIC_COUNT); 63 fs_inputs->generic[index] = i; 64 break; 65 66 case TGSI_SEMANTIC_FOG: 67 assert(index == 0); 68 fs_inputs->fog = i; 69 break; 70 71 case TGSI_SEMANTIC_POSITION: 72 assert(index == 0); 73 fs_inputs->wpos = i; 74 break; 75 76 case TGSI_SEMANTIC_FACE: 77 assert(index == 0); 78 fs_inputs->face = i; 79 break; 80 81 default: 82 fprintf(stderr, "r300: FP: Unknown input semantic: %i\n", 83 info->input_semantic_name[i]); 84 } 85 } 86 } 87 88 static void find_output_registers(struct r300_fragment_program_compiler * compiler, 89 struct r300_fragment_shader_code *shader) 90 { 91 unsigned i, colorbuf_count = 0; 92 93 /* Mark the outputs as not present initially */ 94 compiler->OutputColor[0] = shader->info.num_outputs; 95 compiler->OutputColor[1] = shader->info.num_outputs; 96 compiler->OutputColor[2] = shader->info.num_outputs; 97 compiler->OutputColor[3] = shader->info.num_outputs; 98 compiler->OutputDepth = shader->info.num_outputs; 99 100 /* Now see where they really are. */ 101 for(i = 0; i < shader->info.num_outputs; ++i) { 102 switch(shader->info.output_semantic_name[i]) { 103 case TGSI_SEMANTIC_COLOR: 104 compiler->OutputColor[colorbuf_count] = i; 105 colorbuf_count++; 106 break; 107 case TGSI_SEMANTIC_POSITION: 108 compiler->OutputDepth = i; 109 break; 110 } 111 } 112 } 113 114 static void allocate_hardware_inputs( 115 struct r300_fragment_program_compiler * c, 116 void (*allocate)(void * data, unsigned input, unsigned hwreg), 117 void * mydata) 118 { 119 struct r300_shader_semantics* inputs = 120 (struct r300_shader_semantics*)c->UserData; 121 int i, reg = 0; 122 123 /* Allocate input registers. */ 124 for (i = 0; i < ATTR_COLOR_COUNT; i++) { 125 if (inputs->color[i] != ATTR_UNUSED) { 126 allocate(mydata, inputs->color[i], reg++); 127 } 128 } 129 if (inputs->face != ATTR_UNUSED) { 130 allocate(mydata, inputs->face, reg++); 131 } 132 for (i = 0; i < ATTR_GENERIC_COUNT; i++) { 133 if (inputs->generic[i] != ATTR_UNUSED) { 134 allocate(mydata, inputs->generic[i], reg++); 135 } 136 } 137 if (inputs->fog != ATTR_UNUSED) { 138 allocate(mydata, inputs->fog, reg++); 139 } 140 if (inputs->wpos != ATTR_UNUSED) { 141 allocate(mydata, inputs->wpos, reg++); 142 } 143 } 144 145 static void get_external_state( 146 struct r300_context* r300, 147 struct r300_fragment_program_external_state* state) 148 { 149 struct r300_textures_state *texstate = r300->textures_state.state; 150 unsigned i; 151 152 state->alpha_to_one = r300->alpha_to_one && r300->msaa_enable; 153 154 for (i = 0; i < texstate->sampler_state_count; i++) { 155 struct r300_sampler_state *s = texstate->sampler_states[i]; 156 struct r300_sampler_view *v = texstate->sampler_views[i]; 157 struct r300_resource *t; 158 159 if (!s || !v) { 160 continue; 161 } 162 163 t = r300_resource(v->base.texture); 164 165 if (s->state.compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE) { 166 state->unit[i].compare_mode_enabled = 1; 167 168 /* Fortunately, no need to translate this. */ 169 state->unit[i].texture_compare_func = s->state.compare_func; 170 } 171 172 state->unit[i].non_normalized_coords = !s->state.normalized_coords; 173 174 /* Pass texture swizzling to the compiler, some lowering passes need it. */ 175 if (state->unit[i].compare_mode_enabled) { 176 state->unit[i].texture_swizzle = 177 RC_MAKE_SWIZZLE(v->swizzle[0], v->swizzle[1], 178 v->swizzle[2], v->swizzle[3]); 179 } 180 181 /* XXX this should probably take into account STR, not just S. */ 182 if (t->tex.is_npot) { 183 switch (s->state.wrap_s) { 184 case PIPE_TEX_WRAP_REPEAT: 185 state->unit[i].wrap_mode = RC_WRAP_REPEAT; 186 break; 187 188 case PIPE_TEX_WRAP_MIRROR_REPEAT: 189 state->unit[i].wrap_mode = RC_WRAP_MIRRORED_REPEAT; 190 break; 191 192 case PIPE_TEX_WRAP_MIRROR_CLAMP: 193 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE: 194 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER: 195 state->unit[i].wrap_mode = RC_WRAP_MIRRORED_CLAMP; 196 break; 197 198 default: 199 state->unit[i].wrap_mode = RC_WRAP_NONE; 200 } 201 202 if (t->b.b.target == PIPE_TEXTURE_3D) 203 state->unit[i].clamp_and_scale_before_fetch = TRUE; 204 } 205 } 206 } 207 208 static void r300_translate_fragment_shader( 209 struct r300_context* r300, 210 struct r300_fragment_shader_code* shader, 211 const struct tgsi_token *tokens); 212 213 static void r300_dummy_fragment_shader( 214 struct r300_context* r300, 215 struct r300_fragment_shader_code* shader) 216 { 217 struct pipe_shader_state state; 218 struct ureg_program *ureg; 219 struct ureg_dst out; 220 struct ureg_src imm; 221 222 /* Make a simple fragment shader which outputs (0, 0, 0, 1) */ 223 ureg = ureg_create(PIPE_SHADER_FRAGMENT); 224 out = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0); 225 imm = ureg_imm4f(ureg, 0, 0, 0, 1); 226 227 ureg_MOV(ureg, out, imm); 228 ureg_END(ureg); 229 230 state.tokens = ureg_finalize(ureg); 231 232 shader->dummy = TRUE; 233 r300_translate_fragment_shader(r300, shader, state.tokens); 234 235 ureg_destroy(ureg); 236 } 237 238 static void r300_emit_fs_code_to_buffer( 239 struct r300_context *r300, 240 struct r300_fragment_shader_code *shader) 241 { 242 struct rX00_fragment_program_code *generic_code = &shader->code; 243 unsigned imm_count = shader->immediates_count; 244 unsigned imm_first = shader->externals_count; 245 unsigned imm_end = generic_code->constants.Count; 246 struct rc_constant *constants = generic_code->constants.Constants; 247 unsigned i; 248 CB_LOCALS; 249 250 if (r300->screen->caps.is_r500) { 251 struct r500_fragment_program_code *code = &generic_code->code.r500; 252 253 shader->cb_code_size = 19 + 254 ((code->inst_end + 1) * 6) + 255 imm_count * 7 + 256 code->int_constant_count * 2; 257 258 NEW_CB(shader->cb_code, shader->cb_code_size); 259 OUT_CB_REG(R500_US_CONFIG, R500_ZERO_TIMES_ANYTHING_EQUALS_ZERO); 260 OUT_CB_REG(R500_US_PIXSIZE, code->max_temp_idx); 261 OUT_CB_REG(R500_US_FC_CTRL, code->us_fc_ctrl); 262 for(i = 0; i < code->int_constant_count; i++){ 263 OUT_CB_REG(R500_US_FC_INT_CONST_0 + (i * 4), 264 code->int_constants[i]); 265 } 266 OUT_CB_REG(R500_US_CODE_RANGE, 267 R500_US_CODE_RANGE_ADDR(0) | R500_US_CODE_RANGE_SIZE(code->inst_end)); 268 OUT_CB_REG(R500_US_CODE_OFFSET, 0); 269 OUT_CB_REG(R500_US_CODE_ADDR, 270 R500_US_CODE_START_ADDR(0) | R500_US_CODE_END_ADDR(code->inst_end)); 271 272 OUT_CB_REG(R500_GA_US_VECTOR_INDEX, R500_GA_US_VECTOR_INDEX_TYPE_INSTR); 273 OUT_CB_ONE_REG(R500_GA_US_VECTOR_DATA, (code->inst_end + 1) * 6); 274 for (i = 0; i <= code->inst_end; i++) { 275 OUT_CB(code->inst[i].inst0); 276 OUT_CB(code->inst[i].inst1); 277 OUT_CB(code->inst[i].inst2); 278 OUT_CB(code->inst[i].inst3); 279 OUT_CB(code->inst[i].inst4); 280 OUT_CB(code->inst[i].inst5); 281 } 282 283 /* Emit immediates. */ 284 if (imm_count) { 285 for(i = imm_first; i < imm_end; ++i) { 286 if (constants[i].Type == RC_CONSTANT_IMMEDIATE) { 287 const float *data = constants[i].u.Immediate; 288 289 OUT_CB_REG(R500_GA_US_VECTOR_INDEX, 290 R500_GA_US_VECTOR_INDEX_TYPE_CONST | 291 (i & R500_GA_US_VECTOR_INDEX_MASK)); 292 OUT_CB_ONE_REG(R500_GA_US_VECTOR_DATA, 4); 293 OUT_CB_TABLE(data, 4); 294 } 295 } 296 } 297 } else { /* r300 */ 298 struct r300_fragment_program_code *code = &generic_code->code.r300; 299 unsigned int alu_length = code->alu.length; 300 unsigned int alu_iterations = ((alu_length - 1) / 64) + 1; 301 unsigned int tex_length = code->tex.length; 302 unsigned int tex_iterations = 303 tex_length > 0 ? ((tex_length - 1) / 32) + 1 : 0; 304 unsigned int iterations = 305 alu_iterations > tex_iterations ? alu_iterations : tex_iterations; 306 unsigned int bank = 0; 307 308 shader->cb_code_size = 15 + 309 /* R400_US_CODE_BANK */ 310 (r300->screen->caps.is_r400 ? 2 * (iterations + 1): 0) + 311 /* R400_US_CODE_EXT */ 312 (r300->screen->caps.is_r400 ? 2 : 0) + 313 /* R300_US_ALU_{RGB,ALPHA}_{INST,ADDR}_0, R400_US_ALU_EXT_ADDR_0 */ 314 (code->r390_mode ? (5 * alu_iterations) : 4) + 315 /* R400_US_ALU_EXT_ADDR_[0-63] */ 316 (code->r390_mode ? (code->alu.length) : 0) + 317 /* R300_US_ALU_{RGB,ALPHA}_{INST,ADDR}_0 */ 318 code->alu.length * 4 + 319 /* R300_US_TEX_INST_0, R300_US_TEX_INST_[0-31] */ 320 (code->tex.length > 0 ? code->tex.length + tex_iterations : 0) + 321 imm_count * 5; 322 323 NEW_CB(shader->cb_code, shader->cb_code_size); 324 325 OUT_CB_REG(R300_US_CONFIG, code->config); 326 OUT_CB_REG(R300_US_PIXSIZE, code->pixsize); 327 OUT_CB_REG(R300_US_CODE_OFFSET, code->code_offset); 328 329 if (code->r390_mode) { 330 OUT_CB_REG(R400_US_CODE_EXT, code->r400_code_offset_ext); 331 } else if (r300->screen->caps.is_r400) { 332 /* This register appears to affect shaders even if r390_mode is 333 * disabled, so it needs to be set to 0 for shaders that 334 * don't use r390_mode. */ 335 OUT_CB_REG(R400_US_CODE_EXT, 0); 336 } 337 338 OUT_CB_REG_SEQ(R300_US_CODE_ADDR_0, 4); 339 OUT_CB_TABLE(code->code_addr, 4); 340 341 do { 342 unsigned int bank_alu_length = (alu_length < 64 ? alu_length : 64); 343 unsigned int bank_alu_offset = bank * 64; 344 unsigned int bank_tex_length = (tex_length < 32 ? tex_length : 32); 345 unsigned int bank_tex_offset = bank * 32; 346 347 if (r300->screen->caps.is_r400) { 348 OUT_CB_REG(R400_US_CODE_BANK, code->r390_mode ? 349 (bank << R400_BANK_SHIFT) | R400_R390_MODE_ENABLE : 0);//2 350 } 351 352 if (bank_alu_length > 0) { 353 OUT_CB_REG_SEQ(R300_US_ALU_RGB_INST_0, bank_alu_length); 354 for (i = 0; i < bank_alu_length; i++) 355 OUT_CB(code->alu.inst[i + bank_alu_offset].rgb_inst); 356 357 OUT_CB_REG_SEQ(R300_US_ALU_RGB_ADDR_0, bank_alu_length); 358 for (i = 0; i < bank_alu_length; i++) 359 OUT_CB(code->alu.inst[i + bank_alu_offset].rgb_addr); 360 361 OUT_CB_REG_SEQ(R300_US_ALU_ALPHA_INST_0, bank_alu_length); 362 for (i = 0; i < bank_alu_length; i++) 363 OUT_CB(code->alu.inst[i + bank_alu_offset].alpha_inst); 364 365 OUT_CB_REG_SEQ(R300_US_ALU_ALPHA_ADDR_0, bank_alu_length); 366 for (i = 0; i < bank_alu_length; i++) 367 OUT_CB(code->alu.inst[i + bank_alu_offset].alpha_addr); 368 369 if (code->r390_mode) { 370 OUT_CB_REG_SEQ(R400_US_ALU_EXT_ADDR_0, bank_alu_length); 371 for (i = 0; i < bank_alu_length; i++) 372 OUT_CB(code->alu.inst[i + bank_alu_offset].r400_ext_addr); 373 } 374 } 375 376 if (bank_tex_length > 0) { 377 OUT_CB_REG_SEQ(R300_US_TEX_INST_0, bank_tex_length); 378 OUT_CB_TABLE(code->tex.inst + bank_tex_offset, bank_tex_length); 379 } 380 381 alu_length -= bank_alu_length; 382 tex_length -= bank_tex_length; 383 bank++; 384 } while(code->r390_mode && (alu_length > 0 || tex_length > 0)); 385 386 /* R400_US_CODE_BANK needs to be reset to 0, otherwise some shaders 387 * will be rendered incorrectly. */ 388 if (r300->screen->caps.is_r400) { 389 OUT_CB_REG(R400_US_CODE_BANK, 390 code->r390_mode ? R400_R390_MODE_ENABLE : 0); 391 } 392 393 /* Emit immediates. */ 394 if (imm_count) { 395 for(i = imm_first; i < imm_end; ++i) { 396 if (constants[i].Type == RC_CONSTANT_IMMEDIATE) { 397 const float *data = constants[i].u.Immediate; 398 399 OUT_CB_REG_SEQ(R300_PFS_PARAM_0_X + i * 16, 4); 400 OUT_CB(pack_float24(data[0])); 401 OUT_CB(pack_float24(data[1])); 402 OUT_CB(pack_float24(data[2])); 403 OUT_CB(pack_float24(data[3])); 404 } 405 } 406 } 407 } 408 409 OUT_CB_REG(R300_FG_DEPTH_SRC, shader->fg_depth_src); 410 OUT_CB_REG(R300_US_W_FMT, shader->us_out_w); 411 END_CB; 412 } 413 414 static void r300_translate_fragment_shader( 415 struct r300_context* r300, 416 struct r300_fragment_shader_code* shader, 417 const struct tgsi_token *tokens) 418 { 419 struct r300_fragment_program_compiler compiler; 420 struct tgsi_to_rc ttr; 421 int wpos, face; 422 unsigned i; 423 424 tgsi_scan_shader(tokens, &shader->info); 425 r300_shader_read_fs_inputs(&shader->info, &shader->inputs); 426 427 wpos = shader->inputs.wpos; 428 face = shader->inputs.face; 429 430 /* Setup the compiler. */ 431 memset(&compiler, 0, sizeof(compiler)); 432 rc_init(&compiler.Base, &r300->fs_regalloc_state); 433 DBG_ON(r300, DBG_FP) ? compiler.Base.Debug |= RC_DBG_LOG : 0; 434 DBG_ON(r300, DBG_P_STAT) ? compiler.Base.Debug |= RC_DBG_STATS : 0; 435 436 compiler.code = &shader->code; 437 compiler.state = shader->compare_state; 438 compiler.Base.is_r500 = r300->screen->caps.is_r500; 439 compiler.Base.is_r400 = r300->screen->caps.is_r400; 440 compiler.Base.disable_optimizations = DBG_ON(r300, DBG_NO_OPT); 441 compiler.Base.has_half_swizzles = TRUE; 442 compiler.Base.has_presub = TRUE; 443 compiler.Base.has_omod = TRUE; 444 compiler.Base.max_temp_regs = 445 compiler.Base.is_r500 ? 128 : (compiler.Base.is_r400 ? 64 : 32); 446 compiler.Base.max_constants = compiler.Base.is_r500 ? 256 : 32; 447 compiler.Base.max_alu_insts = 448 (compiler.Base.is_r500 || compiler.Base.is_r400) ? 512 : 64; 449 compiler.Base.max_tex_insts = 450 (compiler.Base.is_r500 || compiler.Base.is_r400) ? 512 : 32; 451 compiler.AllocateHwInputs = &allocate_hardware_inputs; 452 compiler.UserData = &shader->inputs; 453 454 find_output_registers(&compiler, shader); 455 456 shader->write_all = 457 shader->info.properties[TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS]; 458 459 if (compiler.Base.Debug & RC_DBG_LOG) { 460 DBG(r300, DBG_FP, "r300: Initial fragment program\n"); 461 tgsi_dump(tokens, 0); 462 } 463 464 /* Translate TGSI to our internal representation */ 465 ttr.compiler = &compiler.Base; 466 ttr.info = &shader->info; 467 ttr.use_half_swizzles = TRUE; 468 469 r300_tgsi_to_rc(&ttr, tokens); 470 471 if (ttr.error) { 472 fprintf(stderr, "r300 FP: Cannot translate a shader. " 473 "Using a dummy shader instead.\n"); 474 r300_dummy_fragment_shader(r300, shader); 475 return; 476 } 477 478 if (!r300->screen->caps.is_r500 || 479 compiler.Base.Program.Constants.Count > 200) { 480 compiler.Base.remove_unused_constants = TRUE; 481 } 482 483 /** 484 * Transform the program to support WPOS. 485 * 486 * Introduce a small fragment at the start of the program that will be 487 * the only code that directly reads the WPOS input. 488 * All other code pieces that reference that input will be rewritten 489 * to read from a newly allocated temporary. */ 490 if (wpos != ATTR_UNUSED) { 491 /* Moving the input to some other reg is not really necessary. */ 492 rc_transform_fragment_wpos(&compiler.Base, wpos, wpos, TRUE); 493 } 494 495 if (face != ATTR_UNUSED) { 496 rc_transform_fragment_face(&compiler.Base, face); 497 } 498 499 /* Invoke the compiler */ 500 r3xx_compile_fragment_program(&compiler); 501 502 if (compiler.Base.Error) { 503 fprintf(stderr, "r300 FP: Compiler Error:\n%sUsing a dummy shader" 504 " instead.\n", compiler.Base.ErrorMsg); 505 506 if (shader->dummy) { 507 fprintf(stderr, "r300 FP: Cannot compile the dummy shader! " 508 "Giving up...\n"); 509 abort(); 510 } 511 512 rc_destroy(&compiler.Base); 513 r300_dummy_fragment_shader(r300, shader); 514 return; 515 } 516 517 /* Shaders with zero instructions are invalid, 518 * use the dummy shader instead. */ 519 if (shader->code.code.r500.inst_end == -1) { 520 rc_destroy(&compiler.Base); 521 r300_dummy_fragment_shader(r300, shader); 522 return; 523 } 524 525 /* Initialize numbers of constants for each type. */ 526 shader->externals_count = 0; 527 for (i = 0; 528 i < shader->code.constants.Count && 529 shader->code.constants.Constants[i].Type == RC_CONSTANT_EXTERNAL; i++) { 530 shader->externals_count = i+1; 531 } 532 shader->immediates_count = 0; 533 shader->rc_state_count = 0; 534 535 for (i = shader->externals_count; i < shader->code.constants.Count; i++) { 536 switch (shader->code.constants.Constants[i].Type) { 537 case RC_CONSTANT_IMMEDIATE: 538 ++shader->immediates_count; 539 break; 540 case RC_CONSTANT_STATE: 541 ++shader->rc_state_count; 542 break; 543 default: 544 assert(0); 545 } 546 } 547 548 /* Setup shader depth output. */ 549 if (shader->code.writes_depth) { 550 shader->fg_depth_src = R300_FG_DEPTH_SRC_SHADER; 551 shader->us_out_w = R300_W_FMT_W24 | R300_W_SRC_US; 552 } else { 553 shader->fg_depth_src = R300_FG_DEPTH_SRC_SCAN; 554 shader->us_out_w = R300_W_FMT_W0 | R300_W_SRC_US; 555 } 556 557 /* And, finally... */ 558 rc_destroy(&compiler.Base); 559 560 /* Build the command buffer. */ 561 r300_emit_fs_code_to_buffer(r300, shader); 562 } 563 564 boolean r300_pick_fragment_shader(struct r300_context* r300) 565 { 566 struct r300_fragment_shader* fs = r300_fs(r300); 567 struct r300_fragment_program_external_state state; 568 struct r300_fragment_shader_code* ptr; 569 570 memset(&state, 0, sizeof(state)); 571 get_external_state(r300, &state); 572 573 if (!fs->first) { 574 /* Build the fragment shader for the first time. */ 575 fs->first = fs->shader = CALLOC_STRUCT(r300_fragment_shader_code); 576 577 memcpy(&fs->shader->compare_state, &state, 578 sizeof(struct r300_fragment_program_external_state)); 579 r300_translate_fragment_shader(r300, fs->shader, fs->state.tokens); 580 return TRUE; 581 582 } else { 583 /* Check if the currently-bound shader has been compiled 584 * with the texture-compare state we need. */ 585 if (memcmp(&fs->shader->compare_state, &state, sizeof(state)) != 0) { 586 /* Search for the right shader. */ 587 ptr = fs->first; 588 while (ptr) { 589 if (memcmp(&ptr->compare_state, &state, sizeof(state)) == 0) { 590 if (fs->shader != ptr) { 591 fs->shader = ptr; 592 return TRUE; 593 } 594 /* The currently-bound one is OK. */ 595 return FALSE; 596 } 597 ptr = ptr->next; 598 } 599 600 /* Not found, gotta compile a new one. */ 601 ptr = CALLOC_STRUCT(r300_fragment_shader_code); 602 ptr->next = fs->first; 603 fs->first = fs->shader = ptr; 604 605 ptr->compare_state = state; 606 r300_translate_fragment_shader(r300, ptr, fs->state.tokens); 607 return TRUE; 608 } 609 } 610 611 return FALSE; 612 } 613
