1 /* 2 * Copyright 2008 Corbin Simpson <MostAwesomeDude (at) gmail.com> 3 * 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining 7 * a copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sublicense, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial 16 * portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 21 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 */ 27 28 #include "r500_fragprog.h" 29 30 #include <stdio.h> 31 32 #include "radeon_compiler_util.h" 33 #include "radeon_list.h" 34 #include "radeon_variable.h" 35 #include "r300_reg.h" 36 37 /** 38 * Rewrite IF instructions to use the ALU result special register. 39 */ 40 int r500_transform_IF( 41 struct radeon_compiler * c, 42 struct rc_instruction * inst_if, 43 void *data) 44 { 45 struct rc_variable * writer; 46 struct rc_list * writer_list, * list_ptr; 47 struct rc_list * var_list = rc_get_variables(c); 48 unsigned int generic_if = 0; 49 unsigned int alu_chan; 50 51 if (inst_if->U.I.Opcode != RC_OPCODE_IF) { 52 return 0; 53 } 54 55 writer_list = rc_variable_list_get_writers( 56 var_list, inst_if->Type, &inst_if->U.I.SrcReg[0]); 57 if (!writer_list) { 58 generic_if = 1; 59 } else { 60 61 /* Make sure it is safe for the writers to write to 62 * ALU Result */ 63 for (list_ptr = writer_list; list_ptr; 64 list_ptr = list_ptr->Next) { 65 struct rc_instruction * inst; 66 writer = list_ptr->Item; 67 /* We are going to modify the destination register 68 * of writer, so if it has a reader other than 69 * inst_if (aka ReaderCount > 1) we must fall back to 70 * our generic IF. 71 * If the writer has a lower IP than inst_if, this 72 * means that inst_if is above the writer in a loop. 73 * I'm not sure why this would ever happen, but 74 * if it does we want to make sure we fall back 75 * to our generic IF. */ 76 if (writer->ReaderCount > 1 || writer->Inst->IP < inst_if->IP) { 77 generic_if = 1; 78 break; 79 } 80 81 /* The ALU Result is not preserved across IF 82 * instructions, so if there is another IF 83 * instruction between writer and inst_if, then 84 * we need to fall back to generic IF. */ 85 for (inst = writer->Inst; inst != inst_if; inst = inst->Next) { 86 const struct rc_opcode_info * info = 87 rc_get_opcode_info(inst->U.I.Opcode); 88 if (info->IsFlowControl) { 89 generic_if = 1; 90 break; 91 } 92 } 93 if (generic_if) { 94 break; 95 } 96 } 97 } 98 99 if (GET_SWZ(inst_if->U.I.SrcReg[0].Swizzle, 0) == RC_SWIZZLE_X) { 100 alu_chan = RC_ALURESULT_X; 101 } else { 102 alu_chan = RC_ALURESULT_W; 103 } 104 if (generic_if) { 105 struct rc_instruction * inst_mov = 106 rc_insert_new_instruction(c, inst_if->Prev); 107 108 inst_mov->U.I.Opcode = RC_OPCODE_MOV; 109 inst_mov->U.I.DstReg.WriteMask = 0; 110 inst_mov->U.I.DstReg.File = RC_FILE_NONE; 111 inst_mov->U.I.ALUResultCompare = RC_COMPARE_FUNC_NOTEQUAL; 112 inst_mov->U.I.WriteALUResult = alu_chan; 113 inst_mov->U.I.SrcReg[0] = inst_if->U.I.SrcReg[0]; 114 if (alu_chan == RC_ALURESULT_X) { 115 inst_mov->U.I.SrcReg[0].Swizzle = combine_swizzles4( 116 inst_mov->U.I.SrcReg[0].Swizzle, 117 RC_SWIZZLE_X, RC_SWIZZLE_UNUSED, 118 RC_SWIZZLE_UNUSED, RC_SWIZZLE_UNUSED); 119 } else { 120 inst_mov->U.I.SrcReg[0].Swizzle = combine_swizzles4( 121 inst_mov->U.I.SrcReg[0].Swizzle, 122 RC_SWIZZLE_UNUSED, RC_SWIZZLE_UNUSED, 123 RC_SWIZZLE_UNUSED, RC_SWIZZLE_Z); 124 } 125 } else { 126 rc_compare_func compare_func = RC_COMPARE_FUNC_NEVER; 127 unsigned int reverse_srcs = 0; 128 unsigned int preserve_opcode = 0; 129 for (list_ptr = writer_list; list_ptr; 130 list_ptr = list_ptr->Next) { 131 writer = list_ptr->Item; 132 switch(writer->Inst->U.I.Opcode) { 133 case RC_OPCODE_SEQ: 134 compare_func = RC_COMPARE_FUNC_EQUAL; 135 break; 136 case RC_OPCODE_SNE: 137 compare_func = RC_COMPARE_FUNC_NOTEQUAL; 138 break; 139 case RC_OPCODE_SLE: 140 reverse_srcs = 1; 141 /* Fall through */ 142 case RC_OPCODE_SGE: 143 compare_func = RC_COMPARE_FUNC_GEQUAL; 144 break; 145 case RC_OPCODE_SGT: 146 reverse_srcs = 1; 147 /* Fall through */ 148 case RC_OPCODE_SLT: 149 compare_func = RC_COMPARE_FUNC_LESS; 150 break; 151 default: 152 compare_func = RC_COMPARE_FUNC_NOTEQUAL; 153 preserve_opcode = 1; 154 break; 155 } 156 if (!preserve_opcode) { 157 writer->Inst->U.I.Opcode = RC_OPCODE_SUB; 158 } 159 writer->Inst->U.I.DstReg.WriteMask = 0; 160 writer->Inst->U.I.DstReg.File = RC_FILE_NONE; 161 writer->Inst->U.I.WriteALUResult = alu_chan; 162 writer->Inst->U.I.ALUResultCompare = compare_func; 163 if (reverse_srcs) { 164 struct rc_src_register temp_src; 165 temp_src = writer->Inst->U.I.SrcReg[0]; 166 writer->Inst->U.I.SrcReg[0] = 167 writer->Inst->U.I.SrcReg[1]; 168 writer->Inst->U.I.SrcReg[1] = temp_src; 169 } 170 } 171 } 172 173 inst_if->U.I.SrcReg[0].File = RC_FILE_SPECIAL; 174 inst_if->U.I.SrcReg[0].Index = RC_SPECIAL_ALU_RESULT; 175 inst_if->U.I.SrcReg[0].Swizzle = RC_MAKE_SWIZZLE( 176 RC_SWIZZLE_X, RC_SWIZZLE_UNUSED, 177 RC_SWIZZLE_UNUSED, RC_SWIZZLE_UNUSED); 178 inst_if->U.I.SrcReg[0].Negate = 0; 179 180 return 1; 181 } 182 183 static int r500_swizzle_is_native(rc_opcode opcode, struct rc_src_register reg) 184 { 185 unsigned int relevant; 186 int i; 187 188 if (opcode == RC_OPCODE_TEX || 189 opcode == RC_OPCODE_TXB || 190 opcode == RC_OPCODE_TXP || 191 opcode == RC_OPCODE_TXD || 192 opcode == RC_OPCODE_TXL || 193 opcode == RC_OPCODE_KIL) { 194 if (reg.Abs) 195 return 0; 196 197 if (opcode == RC_OPCODE_KIL && (reg.Swizzle != RC_SWIZZLE_XYZW || reg.Negate != RC_MASK_NONE)) 198 return 0; 199 200 for(i = 0; i < 4; ++i) { 201 unsigned int swz = GET_SWZ(reg.Swizzle, i); 202 if (swz == RC_SWIZZLE_UNUSED) { 203 reg.Negate &= ~(1 << i); 204 continue; 205 } 206 if (swz >= 4) 207 return 0; 208 } 209 210 if (reg.Negate) 211 return 0; 212 213 return 1; 214 } else if (opcode == RC_OPCODE_DDX || opcode == RC_OPCODE_DDY) { 215 /* DDX/MDH and DDY/MDV explicitly ignore incoming swizzles; 216 * if it doesn't fit perfectly into a .xyzw case... */ 217 if (reg.Swizzle == RC_SWIZZLE_XYZW && !reg.Abs && !reg.Negate) 218 return 1; 219 220 return 0; 221 } else if (reg.File == RC_FILE_INLINE) { 222 return 1; 223 } else { 224 /* ALU instructions support almost everything */ 225 relevant = 0; 226 for(i = 0; i < 3; ++i) { 227 unsigned int swz = GET_SWZ(reg.Swizzle, i); 228 if (swz != RC_SWIZZLE_UNUSED && swz != RC_SWIZZLE_ZERO) 229 relevant |= 1 << i; 230 } 231 if ((reg.Negate & relevant) && ((reg.Negate & relevant) != relevant)) 232 return 0; 233 234 return 1; 235 } 236 } 237 238 /** 239 * Split source register access. 240 * 241 * The only thing we *cannot* do in an ALU instruction is per-component 242 * negation. 243 */ 244 static void r500_swizzle_split(struct rc_src_register src, unsigned int usemask, 245 struct rc_swizzle_split * split) 246 { 247 unsigned int negatebase[2] = { 0, 0 }; 248 int i; 249 250 for(i = 0; i < 4; ++i) { 251 unsigned int swz = GET_SWZ(src.Swizzle, i); 252 if (swz == RC_SWIZZLE_UNUSED || !GET_BIT(usemask, i)) 253 continue; 254 negatebase[GET_BIT(src.Negate, i)] |= 1 << i; 255 } 256 257 split->NumPhases = 0; 258 259 for(i = 0; i <= 1; ++i) { 260 if (!negatebase[i]) 261 continue; 262 263 split->Phase[split->NumPhases++] = negatebase[i]; 264 } 265 } 266 267 struct rc_swizzle_caps r500_swizzle_caps = { 268 .IsNative = r500_swizzle_is_native, 269 .Split = r500_swizzle_split 270 }; 271 272 static char *toswiz(int swiz_val) { 273 switch(swiz_val) { 274 case 0: return "R"; 275 case 1: return "G"; 276 case 2: return "B"; 277 case 3: return "A"; 278 case 4: return "0"; 279 case 5: return "H"; 280 case 6: return "1"; 281 case 7: return "U"; 282 } 283 return NULL; 284 } 285 286 static char *toop(int op_val) 287 { 288 char *str = NULL; 289 switch (op_val) { 290 case 0: str = "MAD"; break; 291 case 1: str = "DP3"; break; 292 case 2: str = "DP4"; break; 293 case 3: str = "D2A"; break; 294 case 4: str = "MIN"; break; 295 case 5: str = "MAX"; break; 296 case 6: str = "Reserved"; break; 297 case 7: str = "CND"; break; 298 case 8: str = "CMP"; break; 299 case 9: str = "FRC"; break; 300 case 10: str = "SOP"; break; 301 case 11: str = "MDH"; break; 302 case 12: str = "MDV"; break; 303 } 304 return str; 305 } 306 307 static char *to_alpha_op(int op_val) 308 { 309 char *str = NULL; 310 switch (op_val) { 311 case 0: str = "MAD"; break; 312 case 1: str = "DP"; break; 313 case 2: str = "MIN"; break; 314 case 3: str = "MAX"; break; 315 case 4: str = "Reserved"; break; 316 case 5: str = "CND"; break; 317 case 6: str = "CMP"; break; 318 case 7: str = "FRC"; break; 319 case 8: str = "EX2"; break; 320 case 9: str = "LN2"; break; 321 case 10: str = "RCP"; break; 322 case 11: str = "RSQ"; break; 323 case 12: str = "SIN"; break; 324 case 13: str = "COS"; break; 325 case 14: str = "MDH"; break; 326 case 15: str = "MDV"; break; 327 } 328 return str; 329 } 330 331 static char *to_mask(int val) 332 { 333 char *str = NULL; 334 switch(val) { 335 case 0: str = "NONE"; break; 336 case 1: str = "R"; break; 337 case 2: str = "G"; break; 338 case 3: str = "RG"; break; 339 case 4: str = "B"; break; 340 case 5: str = "RB"; break; 341 case 6: str = "GB"; break; 342 case 7: str = "RGB"; break; 343 case 8: str = "A"; break; 344 case 9: str = "AR"; break; 345 case 10: str = "AG"; break; 346 case 11: str = "ARG"; break; 347 case 12: str = "AB"; break; 348 case 13: str = "ARB"; break; 349 case 14: str = "AGB"; break; 350 case 15: str = "ARGB"; break; 351 } 352 return str; 353 } 354 355 static char *to_texop(int val) 356 { 357 switch(val) { 358 case 0: return "NOP"; 359 case 1: return "LD"; 360 case 2: return "TEXKILL"; 361 case 3: return "PROJ"; 362 case 4: return "LODBIAS"; 363 case 5: return "LOD"; 364 case 6: return "DXDY"; 365 } 366 return NULL; 367 } 368 369 void r500FragmentProgramDump(struct radeon_compiler *c, void *user) 370 { 371 struct r300_fragment_program_compiler *compiler = (struct r300_fragment_program_compiler*)c; 372 struct r500_fragment_program_code *code = &compiler->code->code.r500; 373 int n, i; 374 uint32_t inst; 375 uint32_t inst0; 376 char *str = NULL; 377 fprintf(stderr, "R500 Fragment Program:\n--------\n"); 378 379 for (n = 0; n < code->inst_end+1; n++) { 380 inst0 = inst = code->inst[n].inst0; 381 fprintf(stderr,"%d\t0:CMN_INST 0x%08x:", n, inst); 382 switch(inst & 0x3) { 383 case R500_INST_TYPE_ALU: str = "ALU"; break; 384 case R500_INST_TYPE_OUT: str = "OUT"; break; 385 case R500_INST_TYPE_FC: str = "FC"; break; 386 case R500_INST_TYPE_TEX: str = "TEX"; break; 387 } 388 fprintf(stderr,"%s %s %s %s %s ", str, 389 inst & R500_INST_TEX_SEM_WAIT ? "TEX_WAIT" : "", 390 inst & R500_INST_LAST ? "LAST" : "", 391 inst & R500_INST_NOP ? "NOP" : "", 392 inst & R500_INST_ALU_WAIT ? "ALU WAIT" : ""); 393 fprintf(stderr,"wmask: %s omask: %s\n", to_mask((inst >> 11) & 0xf), 394 to_mask((inst >> 15) & 0xf)); 395 396 switch(inst0 & 0x3) { 397 case R500_INST_TYPE_ALU: 398 case R500_INST_TYPE_OUT: 399 fprintf(stderr,"\t1:RGB_ADDR 0x%08x:", code->inst[n].inst1); 400 inst = code->inst[n].inst1; 401 402 fprintf(stderr,"Addr0: %d%c, Addr1: %d%c, Addr2: %d%c, srcp:%d\n", 403 inst & 0xff, (inst & (1<<8)) ? 'c' : 't', 404 (inst >> 10) & 0xff, (inst & (1<<18)) ? 'c' : 't', 405 (inst >> 20) & 0xff, (inst & (1<<28)) ? 'c' : 't', 406 (inst >> 30)); 407 408 fprintf(stderr,"\t2:ALPHA_ADDR 0x%08x:", code->inst[n].inst2); 409 inst = code->inst[n].inst2; 410 fprintf(stderr,"Addr0: %d%c, Addr1: %d%c, Addr2: %d%c, srcp:%d\n", 411 inst & 0xff, (inst & (1<<8)) ? 'c' : 't', 412 (inst >> 10) & 0xff, (inst & (1<<18)) ? 'c' : 't', 413 (inst >> 20) & 0xff, (inst & (1<<28)) ? 'c' : 't', 414 (inst >> 30)); 415 fprintf(stderr,"\t3 RGB_INST: 0x%08x:", code->inst[n].inst3); 416 inst = code->inst[n].inst3; 417 fprintf(stderr,"rgb_A_src:%d %s/%s/%s %d rgb_B_src:%d %s/%s/%s %d targ: %d\n", 418 (inst) & 0x3, toswiz((inst >> 2) & 0x7), toswiz((inst >> 5) & 0x7), toswiz((inst >> 8) & 0x7), 419 (inst >> 11) & 0x3, 420 (inst >> 13) & 0x3, toswiz((inst >> 15) & 0x7), toswiz((inst >> 18) & 0x7), toswiz((inst >> 21) & 0x7), 421 (inst >> 24) & 0x3, (inst >> 29) & 0x3); 422 423 424 fprintf(stderr,"\t4 ALPHA_INST:0x%08x:", code->inst[n].inst4); 425 inst = code->inst[n].inst4; 426 fprintf(stderr,"%s dest:%d%s alp_A_src:%d %s %d alp_B_src:%d %s %d targ %d w:%d\n", to_alpha_op(inst & 0xf), 427 (inst >> 4) & 0x7f, inst & (1<<11) ? "(rel)":"", 428 (inst >> 12) & 0x3, toswiz((inst >> 14) & 0x7), (inst >> 17) & 0x3, 429 (inst >> 19) & 0x3, toswiz((inst >> 21) & 0x7), (inst >> 24) & 0x3, 430 (inst >> 29) & 0x3, 431 (inst >> 31) & 0x1); 432 433 fprintf(stderr,"\t5 RGBA_INST: 0x%08x:", code->inst[n].inst5); 434 inst = code->inst[n].inst5; 435 fprintf(stderr,"%s dest:%d%s rgb_C_src:%d %s/%s/%s %d alp_C_src:%d %s %d\n", toop(inst & 0xf), 436 (inst >> 4) & 0x7f, inst & (1<<11) ? "(rel)":"", 437 (inst >> 12) & 0x3, toswiz((inst >> 14) & 0x7), toswiz((inst >> 17) & 0x7), toswiz((inst >> 20) & 0x7), 438 (inst >> 23) & 0x3, 439 (inst >> 25) & 0x3, toswiz((inst >> 27) & 0x7), (inst >> 30) & 0x3); 440 break; 441 case R500_INST_TYPE_FC: 442 fprintf(stderr, "\t2:FC_INST 0x%08x:", code->inst[n].inst2); 443 inst = code->inst[n].inst2; 444 /* JUMP_FUNC JUMP_ANY*/ 445 fprintf(stderr, "0x%02x %1x ", inst >> 8 & 0xff, 446 (inst & R500_FC_JUMP_ANY) >> 5); 447 448 /* OP */ 449 switch(inst & 0x7){ 450 case R500_FC_OP_JUMP: 451 fprintf(stderr, "JUMP"); 452 break; 453 case R500_FC_OP_LOOP: 454 fprintf(stderr, "LOOP"); 455 break; 456 case R500_FC_OP_ENDLOOP: 457 fprintf(stderr, "ENDLOOP"); 458 break; 459 case R500_FC_OP_REP: 460 fprintf(stderr, "REP"); 461 break; 462 case R500_FC_OP_ENDREP: 463 fprintf(stderr, "ENDREP"); 464 break; 465 case R500_FC_OP_BREAKLOOP: 466 fprintf(stderr, "BREAKLOOP"); 467 break; 468 case R500_FC_OP_BREAKREP: 469 fprintf(stderr, "BREAKREP"); 470 break; 471 case R500_FC_OP_CONTINUE: 472 fprintf(stderr, "CONTINUE"); 473 break; 474 } 475 fprintf(stderr," "); 476 /* A_OP */ 477 switch(inst & (0x3 << 6)){ 478 case R500_FC_A_OP_NONE: 479 fprintf(stderr, "NONE"); 480 break; 481 case R500_FC_A_OP_POP: 482 fprintf(stderr, "POP"); 483 break; 484 case R500_FC_A_OP_PUSH: 485 fprintf(stderr, "PUSH"); 486 break; 487 } 488 /* B_OP0 B_OP1 */ 489 for(i=0; i<2; i++){ 490 fprintf(stderr, " "); 491 switch(inst & (0x3 << (24 + (i * 2)))){ 492 /* R500_FC_B_OP0_NONE 493 * R500_FC_B_OP1_NONE */ 494 case 0: 495 fprintf(stderr, "NONE"); 496 break; 497 case R500_FC_B_OP0_DECR: 498 case R500_FC_B_OP1_DECR: 499 fprintf(stderr, "DECR"); 500 break; 501 case R500_FC_B_OP0_INCR: 502 case R500_FC_B_OP1_INCR: 503 fprintf(stderr, "INCR"); 504 break; 505 } 506 } 507 /*POP_CNT B_ELSE */ 508 fprintf(stderr, " %d %1x", (inst >> 16) & 0x1f, (inst & R500_FC_B_ELSE) >> 4); 509 inst = code->inst[n].inst3; 510 /* JUMP_ADDR */ 511 fprintf(stderr, " %d", inst >> 16); 512 513 if(code->inst[n].inst2 & R500_FC_IGNORE_UNCOVERED){ 514 fprintf(stderr, " IGN_UNC"); 515 } 516 inst = code->inst[n].inst3; 517 fprintf(stderr, "\n\t3:FC_ADDR 0x%08x:", inst); 518 fprintf(stderr, "BOOL: 0x%02x, INT: 0x%02x, JUMP_ADDR: %d, JMP_GLBL: %1x\n", 519 inst & 0x1f, (inst >> 8) & 0x1f, (inst >> 16) & 0x1ff, inst >> 31); 520 break; 521 case R500_INST_TYPE_TEX: 522 inst = code->inst[n].inst1; 523 fprintf(stderr,"\t1:TEX_INST: 0x%08x: id: %d op:%s, %s, %s %s\n", inst, (inst >> 16) & 0xf, 524 to_texop((inst >> 22) & 0x7), (inst & (1<<25)) ? "ACQ" : "", 525 (inst & (1<<26)) ? "IGNUNC" : "", (inst & (1<<27)) ? "UNSCALED" : "SCALED"); 526 inst = code->inst[n].inst2; 527 fprintf(stderr,"\t2:TEX_ADDR: 0x%08x: src: %d%s %s/%s/%s/%s dst: %d%s %s/%s/%s/%s\n", inst, 528 inst & 127, inst & (1<<7) ? "(rel)" : "", 529 toswiz((inst >> 8) & 0x3), toswiz((inst >> 10) & 0x3), 530 toswiz((inst >> 12) & 0x3), toswiz((inst >> 14) & 0x3), 531 (inst >> 16) & 127, inst & (1<<23) ? "(rel)" : "", 532 toswiz((inst >> 24) & 0x3), toswiz((inst >> 26) & 0x3), 533 toswiz((inst >> 28) & 0x3), toswiz((inst >> 30) & 0x3)); 534 535 fprintf(stderr,"\t3:TEX_DXDY: 0x%08x\n", code->inst[n].inst3); 536 break; 537 } 538 fprintf(stderr,"\n"); 539 } 540 541 } 542
