src/gallium/drivers/r300/r300_tgsi_to_rc.c

   1 /*
   2  * Copyright 2009 Nicolai Hähnle <nhaehnle@gmail.com>
   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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE COPYRIGHT HOLDER(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "r300_tgsi_to_rc.h"
  24
  25 #include "radeon_compiler.h"
  26 #include "radeon_program.h"
  27
  28 #include "util/u_math.h"
  29 #include "tgsi/tgsi_info.h"
  30 #include "tgsi/tgsi_parse.h"
  31 #include "tgsi/tgsi_scan.h"
  32 #include "tgsi/tgsi_util.h"
  33
  34 static unsigned translate_opcode(unsigned opcode)
  35 {
  36     switch(opcode) {
  37         case TGSI_OPCODE_ARL: return RC_OPCODE_ARL;
  38         case TGSI_OPCODE_MOV: return RC_OPCODE_MOV;
  39         case TGSI_OPCODE_LIT: return RC_OPCODE_LIT;
  40         case TGSI_OPCODE_RCP: return RC_OPCODE_RCP;
  41         case TGSI_OPCODE_RSQ: return RC_OPCODE_RSQ;
  42         case TGSI_OPCODE_EXP: return RC_OPCODE_EXP;
  43         case TGSI_OPCODE_LOG: return RC_OPCODE_LOG;
  44         case TGSI_OPCODE_MUL: return RC_OPCODE_MUL;
  45         case TGSI_OPCODE_ADD: return RC_OPCODE_ADD;
  46         case TGSI_OPCODE_DP3: return RC_OPCODE_DP3;
  47         case TGSI_OPCODE_DP4: return RC_OPCODE_DP4;
  48         case TGSI_OPCODE_DST: return RC_OPCODE_DST;
  49         case TGSI_OPCODE_MIN: return RC_OPCODE_MIN;
  50         case TGSI_OPCODE_MAX: return RC_OPCODE_MAX;
  51         case TGSI_OPCODE_SLT: return RC_OPCODE_SLT;
  52         case TGSI_OPCODE_SGE: return RC_OPCODE_SGE;
  53         case TGSI_OPCODE_MAD: return RC_OPCODE_MAD;
  54         case TGSI_OPCODE_SUB: return RC_OPCODE_SUB;
  55         case TGSI_OPCODE_LRP: return RC_OPCODE_LRP;
  56         case TGSI_OPCODE_CND: return RC_OPCODE_CND;
  57      /* case TGSI_OPCODE_DP2A: return RC_OPCODE_DP2A; */
  58                                         /* gap */
  59         case TGSI_OPCODE_FRC: return RC_OPCODE_FRC;
  60         case TGSI_OPCODE_CLAMP: return RC_OPCODE_CLAMP;
  61         case TGSI_OPCODE_FLR: return RC_OPCODE_FLR;
  62      /* case TGSI_OPCODE_ROUND: return RC_OPCODE_ROUND; */
  63         case TGSI_OPCODE_EX2: return RC_OPCODE_EX2;
  64         case TGSI_OPCODE_LG2: return RC_OPCODE_LG2;
  65         case TGSI_OPCODE_POW: return RC_OPCODE_POW;
  66         case TGSI_OPCODE_XPD: return RC_OPCODE_XPD;
  67                                         /* gap */
  68         case TGSI_OPCODE_ABS: return RC_OPCODE_ABS;
  69      /* case TGSI_OPCODE_RCC: return RC_OPCODE_RCC; */
  70         case TGSI_OPCODE_DPH: return RC_OPCODE_DPH;
  71         case TGSI_OPCODE_COS: return RC_OPCODE_COS;
  72         case TGSI_OPCODE_DDX: return RC_OPCODE_DDX;
  73         case TGSI_OPCODE_DDY: return RC_OPCODE_DDY;
  74         case TGSI_OPCODE_KILP: return RC_OPCODE_KILP;
  75      /* case TGSI_OPCODE_PK2H: return RC_OPCODE_PK2H; */
  76      /* case TGSI_OPCODE_PK2US: return RC_OPCODE_PK2US; */
  77      /* case TGSI_OPCODE_PK4B: return RC_OPCODE_PK4B; */
  78      /* case TGSI_OPCODE_PK4UB: return RC_OPCODE_PK4UB; */
  79      /* case TGSI_OPCODE_RFL: return RC_OPCODE_RFL; */
  80         case TGSI_OPCODE_SEQ: return RC_OPCODE_SEQ;
  81         case TGSI_OPCODE_SFL: return RC_OPCODE_SFL;
  82         case TGSI_OPCODE_SGT: return RC_OPCODE_SGT;
  83         case TGSI_OPCODE_SIN: return RC_OPCODE_SIN;
  84         case TGSI_OPCODE_SLE: return RC_OPCODE_SLE;
  85         case TGSI_OPCODE_SNE: return RC_OPCODE_SNE;
  86      /* case TGSI_OPCODE_STR: return RC_OPCODE_STR; */
  87         case TGSI_OPCODE_TEX: return RC_OPCODE_TEX;
  88         case TGSI_OPCODE_TXD: return RC_OPCODE_TXD;
  89         case TGSI_OPCODE_TXP: return RC_OPCODE_TXP;
  90      /* case TGSI_OPCODE_UP2H: return RC_OPCODE_UP2H; */
  91      /* case TGSI_OPCODE_UP2US: return RC_OPCODE_UP2US; */
  92      /* case TGSI_OPCODE_UP4B: return RC_OPCODE_UP4B; */
  93      /* case TGSI_OPCODE_UP4UB: return RC_OPCODE_UP4UB; */
  94      /* case TGSI_OPCODE_X2D: return RC_OPCODE_X2D; */
  95      /* case TGSI_OPCODE_ARA: return RC_OPCODE_ARA; */
  96      /* case TGSI_OPCODE_ARR: return RC_OPCODE_ARR; */
  97      /* case TGSI_OPCODE_BRA: return RC_OPCODE_BRA; */
  98      /* case TGSI_OPCODE_CAL: return RC_OPCODE_CAL; */
  99      /* case TGSI_OPCODE_RET: return RC_OPCODE_RET; */
 100         case TGSI_OPCODE_SSG: return RC_OPCODE_SSG;
 101         case TGSI_OPCODE_CMP: return RC_OPCODE_CMP;
 102         case TGSI_OPCODE_SCS: return RC_OPCODE_SCS;
 103         case TGSI_OPCODE_TXB: return RC_OPCODE_TXB;
 104      /* case TGSI_OPCODE_NRM: return RC_OPCODE_NRM; */
 105      /* case TGSI_OPCODE_DIV: return RC_OPCODE_DIV; */
 106         case TGSI_OPCODE_DP2: return RC_OPCODE_DP2;
 107         case TGSI_OPCODE_TXL: return RC_OPCODE_TXL;
 108         case TGSI_OPCODE_BRK: return RC_OPCODE_BRK;
 109         case TGSI_OPCODE_IF: return RC_OPCODE_IF;
 110         case TGSI_OPCODE_BGNLOOP: return RC_OPCODE_BGNLOOP;
 111         case TGSI_OPCODE_ELSE: return RC_OPCODE_ELSE;
 112         case TGSI_OPCODE_ENDIF: return RC_OPCODE_ENDIF;
 113         case TGSI_OPCODE_ENDLOOP: return RC_OPCODE_ENDLOOP;
 114      /* case TGSI_OPCODE_PUSHA: return RC_OPCODE_PUSHA; */
 115      /* case TGSI_OPCODE_POPA: return RC_OPCODE_POPA; */
 116         case TGSI_OPCODE_CEIL: return RC_OPCODE_CEIL;
 117      /* case TGSI_OPCODE_I2F: return RC_OPCODE_I2F; */
 118      /* case TGSI_OPCODE_NOT: return RC_OPCODE_NOT; */
 119         case TGSI_OPCODE_TRUNC: return RC_OPCODE_FLR;
 120      /* case TGSI_OPCODE_SHL: return RC_OPCODE_SHL; */
 121      /* case TGSI_OPCODE_ISHR: return RC_OPCODE_SHR; */
 122      /* case TGSI_OPCODE_AND: return RC_OPCODE_AND; */
 123      /* case TGSI_OPCODE_OR: return RC_OPCODE_OR; */
 124      /* case TGSI_OPCODE_MOD: return RC_OPCODE_MOD; */
 125      /* case TGSI_OPCODE_XOR: return RC_OPCODE_XOR; */
 126      /* case TGSI_OPCODE_SAD: return RC_OPCODE_SAD; */
 127      /* case TGSI_OPCODE_TXF: return RC_OPCODE_TXF; */
 128      /* case TGSI_OPCODE_TXQ: return RC_OPCODE_TXQ; */
 129         case TGSI_OPCODE_CONT: return RC_OPCODE_CONT;
 130      /* case TGSI_OPCODE_EMIT: return RC_OPCODE_EMIT; */
 131      /* case TGSI_OPCODE_ENDPRIM: return RC_OPCODE_ENDPRIM; */
 132      /* case TGSI_OPCODE_BGNLOOP2: return RC_OPCODE_BGNLOOP2; */
 133      /* case TGSI_OPCODE_BGNSUB: return RC_OPCODE_BGNSUB; */
 134      /* case TGSI_OPCODE_ENDLOOP2: return RC_OPCODE_ENDLOOP2; */
 135      /* case TGSI_OPCODE_ENDSUB: return RC_OPCODE_ENDSUB; */
 136         case TGSI_OPCODE_NOP: return RC_OPCODE_NOP;
 137                                         /* gap */
 138      /* case TGSI_OPCODE_NRM4: return RC_OPCODE_NRM4; */
 139      /* case TGSI_OPCODE_CALLNZ: return RC_OPCODE_CALLNZ; */
 140      /* case TGSI_OPCODE_IFC: return RC_OPCODE_IFC; */
 141      /* case TGSI_OPCODE_BREAKC: return RC_OPCODE_BREAKC; */
 142         case TGSI_OPCODE_KIL: return RC_OPCODE_KIL;
 143     }
 144
 145     fprintf(stderr, "r300: Unknown TGSI/RC opcode: %s\n", tgsi_get_opcode_name(opcode));
 146     return RC_OPCODE_ILLEGAL_OPCODE;
 147 }
 148
 149 static unsigned translate_saturate(unsigned saturate)
 150 {
 151     switch(saturate) {
 152         default:
 153             fprintf(stderr, "Unknown saturate mode: %i\n", saturate);
 154             /* fall-through */
 155         case TGSI_SAT_NONE: return RC_SATURATE_NONE;
 156         case TGSI_SAT_ZERO_ONE: return RC_SATURATE_ZERO_ONE;
 157     }
 158 }
 159
 160 static unsigned translate_register_file(unsigned file)
 161 {
 162     switch(file) {
 163         case TGSI_FILE_CONSTANT: return RC_FILE_CONSTANT;
 164         case TGSI_FILE_IMMEDIATE: return RC_FILE_CONSTANT;
 165         case TGSI_FILE_INPUT: return RC_FILE_INPUT;
 166         case TGSI_FILE_OUTPUT: return RC_FILE_OUTPUT;
 167         default:
 168             fprintf(stderr, "Unhandled register file: %i\n", file);
 169             /* fall-through */
 170         case TGSI_FILE_TEMPORARY: return RC_FILE_TEMPORARY;
 171         case TGSI_FILE_ADDRESS: return RC_FILE_ADDRESS;
 172         case TGSI_FILE_SYSTEM_VALUE: return RC_FILE_INPUT;
 173     }
 174 }
 175
 176 static int translate_register_index(
 177     struct tgsi_to_rc * ttr,
 178     unsigned file,
 179     int index)
 180 {
 181     if (file == TGSI_FILE_IMMEDIATE)
 182         return ttr->immediate_offset + index;
 183
 184     if (file == TGSI_FILE_SYSTEM_VALUE) {
 185         if (index == ttr->instance_id) {
 186             return ttr->num_inputs;
 187         } else {
 188             fprintf(stderr, "Unknown system value semantic index: %i\n",
 189                     index);
 190             ttr->error = TRUE;
 191             return 0;
 192         }
 193     }
 194
 195     return index;
 196 }
 197
 198 static void transform_dstreg(
 199     struct tgsi_to_rc * ttr,
 200     struct rc_dst_register * dst,
 201     struct tgsi_full_dst_register * src)
 202 {
 203     dst->File = translate_register_file(src->Register.File);
 204     dst->Index = translate_register_index(ttr, src->Register.File, src->Register.Index);
 205     dst->WriteMask = src->Register.WriteMask;
 206
 207     if (src->Register.Indirect) {
 208         ttr->error = TRUE;
 209         fprintf(stderr, "r300: Relative addressing of destination operands "
 210                 "is unsupported.\n");
 211     }
 212 }
 213
 214 static void transform_srcreg(
 215     struct tgsi_to_rc * ttr,
 216     struct rc_src_register * dst,
 217     struct tgsi_full_src_register * src)
 218 {
 219     unsigned i, j;
 220
 221     dst->File = translate_register_file(src->Register.File);
 222     dst->Index = translate_register_index(ttr, src->Register.File, src->Register.Index);
 223     dst->RelAddr = src->Register.Indirect;
 224     dst->Swizzle = tgsi_util_get_full_src_register_swizzle(src, 0);
 225     dst->Swizzle |= tgsi_util_get_full_src_register_swizzle(src, 1) << 3;
 226     dst->Swizzle |= tgsi_util_get_full_src_register_swizzle(src, 2) << 6;
 227     dst->Swizzle |= tgsi_util_get_full_src_register_swizzle(src, 3) << 9;
 228     dst->Abs = src->Register.Absolute;
 229     dst->Negate = src->Register.Negate ? RC_MASK_XYZW : 0;
 230
 231     if (src->Register.File == TGSI_FILE_IMMEDIATE) {
 232         for (i = 0; i < ttr->imms_to_swizzle_count; i++) {
 233             if (ttr->imms_to_swizzle[i].index == src->Register.Index) {
 234                 dst->File = RC_FILE_TEMPORARY;
 235                 dst->Index = 0;
 236                 dst->Swizzle = 0;
 237                 for (j = 0; j < 4; j++) {
 238                     dst->Swizzle |= GET_SWZ(ttr->imms_to_swizzle[i].swizzle,
 239                         tgsi_util_get_full_src_register_swizzle(src, j)) << (j * 3);
 240                 }
 241                 break;
 242             }
 243         }
 244     }
 245 }
 246
 247 static void transform_texture(struct rc_instruction * dst, struct tgsi_instruction_texture src,
 248                               uint32_t *shadowSamplers)
 249 {
 250     switch(src.Texture) {
 251         case TGSI_TEXTURE_1D:
 252             dst->U.I.TexSrcTarget = RC_TEXTURE_1D;
 253             break;
 254         case TGSI_TEXTURE_2D:
 255             dst->U.I.TexSrcTarget = RC_TEXTURE_2D;
 256             break;
 257         case TGSI_TEXTURE_3D:
 258             dst->U.I.TexSrcTarget = RC_TEXTURE_3D;
 259             break;
 260         case TGSI_TEXTURE_CUBE:
 261             dst->U.I.TexSrcTarget = RC_TEXTURE_CUBE;
 262             break;
 263         case TGSI_TEXTURE_RECT:
 264             dst->U.I.TexSrcTarget = RC_TEXTURE_RECT;
 265             break;
 266         case TGSI_TEXTURE_SHADOW1D:
 267             dst->U.I.TexSrcTarget = RC_TEXTURE_1D;
 268             dst->U.I.TexShadow = 1;
 269             *shadowSamplers |= 1 << dst->U.I.TexSrcUnit;
 270             break;
 271         case TGSI_TEXTURE_SHADOW2D:
 272             dst->U.I.TexSrcTarget = RC_TEXTURE_2D;
 273             dst->U.I.TexShadow = 1;
 274             *shadowSamplers |= 1 << dst->U.I.TexSrcUnit;
 275             break;
 276         case TGSI_TEXTURE_SHADOWRECT:
 277             dst->U.I.TexSrcTarget = RC_TEXTURE_RECT;
 278             dst->U.I.TexShadow = 1;
 279             *shadowSamplers |= 1 << dst->U.I.TexSrcUnit;
 280             break;
 281     }
 282     dst->U.I.TexSwizzle = RC_SWIZZLE_XYZW;
 283 }
 284
 285 static void transform_instruction(struct tgsi_to_rc * ttr,
 286                                   struct tgsi_full_instruction * src)
 287 {
 288     struct rc_instruction * dst;
 289     int i;
 290
 291     dst = rc_insert_new_instruction(ttr->compiler, ttr->compiler->Program.Instructions.Prev);
 292     dst->U.I.Opcode = translate_opcode(src->Instruction.Opcode);
 293     dst->U.I.SaturateMode = translate_saturate(src->Instruction.Saturate);
 294
 295     if (src->Instruction.NumDstRegs)
 296         transform_dstreg(ttr, &dst->U.I.DstReg, &src->Dst[0]);
 297
 298     for(i = 0; i < src->Instruction.NumSrcRegs; ++i) {
 299         if (src->Src[i].Register.File == TGSI_FILE_SAMPLER)
 300             dst->U.I.TexSrcUnit = src->Src[i].Register.Index;
 301         else
 302             transform_srcreg(ttr, &dst->U.I.SrcReg[i], &src->Src[i]);
 303     }
 304
 305     /* Texturing. */
 306     if (src->Instruction.Texture)
 307         transform_texture(dst, src->Texture,
 308                           &ttr->compiler->Program.ShadowSamplers);
 309 }
 310
 311 static void handle_immediate(struct tgsi_to_rc * ttr,
 312                              struct tgsi_full_immediate * imm,
 313                              unsigned index)
 314 {
 315     struct rc_constant constant;
 316     unsigned swizzle = 0;
 317     boolean can_swizzle = TRUE;
 318     unsigned i;
 319
 320     for (i = 0; i < 4; i++) {
 321         if (imm->u[i].Float == 0.0f) {
 322             swizzle |= RC_SWIZZLE_ZERO << (i * 3);
 323         } else if (imm->u[i].Float == 0.5f && ttr->use_half_swizzles) {
 324             swizzle |= RC_SWIZZLE_HALF << (i * 3);
 325         } else if (imm->u[i].Float == 1.0f) {
 326             swizzle |= RC_SWIZZLE_ONE << (i * 3);
 327         } else {
 328             can_swizzle = FALSE;
 329             break;
 330         }
 331     }
 332
 333     if (can_swizzle) {
 334         ttr->imms_to_swizzle[ttr->imms_to_swizzle_count].index = index;
 335         ttr->imms_to_swizzle[ttr->imms_to_swizzle_count].swizzle = swizzle;
 336         ttr->imms_to_swizzle_count++;
 337     } else {
 338         constant.Type = RC_CONSTANT_IMMEDIATE;
 339         constant.Size = 4;
 340         for(i = 0; i < 4; ++i)
 341             constant.u.Immediate[i] = imm->u[i].Float;
 342         rc_constants_add(&ttr->compiler->Program.Constants, &constant);
 343     }
 344 }
 345
 346 static void handle_declaration(struct tgsi_to_rc *ttr,
 347                                struct tgsi_full_declaration *decl)
 348 {
 349     switch (decl->Declaration.File) {
 350     case TGSI_FILE_INPUT:
 351         ttr->num_inputs = MAX2(ttr->num_inputs, decl->Range.First + 1);
 352         break;
 353
 354     case TGSI_FILE_SYSTEM_VALUE:
 355         if (decl->Semantic.Name == TGSI_SEMANTIC_INSTANCEID) {
 356             printf("Got instance id\n");
 357             ttr->instance_id = decl->Range.First;
 358         } else {
 359             fprintf(stderr, "Unknown system value semantic: %i.\n",
 360                     decl->Semantic.Name);
 361             ttr->error = TRUE;
 362         }
 363         break;
 364     }
 365 }
 366
 367 void r300_tgsi_to_rc(struct tgsi_to_rc * ttr,
 368                      const struct tgsi_token * tokens)
 369 {
 370     struct tgsi_full_instruction *inst;
 371     struct tgsi_parse_context parser;
 372     unsigned imm_index = 0;
 373     int i;
 374
 375     ttr->num_inputs = 0;
 376     ttr->instance_id = -1;
 377     ttr->error = FALSE;
 378
 379     /* Allocate constants placeholders.
 380      *
 381      * Note: What if declared constants are not contiguous? */
 382     for(i = 0; i <= ttr->info->file_max[TGSI_FILE_CONSTANT]; ++i) {
 383         struct rc_constant constant;
 384         memset(&constant, 0, sizeof(constant));
 385         constant.Type = RC_CONSTANT_EXTERNAL;
 386         constant.Size = 4;
 387         constant.u.External = i;
 388         rc_constants_add(&ttr->compiler->Program.Constants, &constant);
 389     }
 390
 391     ttr->immediate_offset = ttr->compiler->Program.Constants.Count;
 392
 393     ttr->imms_to_swizzle = malloc(ttr->info->immediate_count * sizeof(struct swizzled_imms));
 394     ttr->imms_to_swizzle_count = 0;
 395
 396     tgsi_parse_init(&parser, tokens);
 397
 398     while (!tgsi_parse_end_of_tokens(&parser)) {
 399         tgsi_parse_token(&parser);
 400
 401         switch (parser.FullToken.Token.Type) {
 402             case TGSI_TOKEN_TYPE_DECLARATION:
 403                 handle_declaration(ttr, &parser.FullToken.FullDeclaration);
 404                 if (ttr->error)
 405                     goto end_while;
 406                 break;
 407
 408             case TGSI_TOKEN_TYPE_IMMEDIATE:
 409                 handle_immediate(ttr, &parser.FullToken.FullImmediate, imm_index);
 410                 imm_index++;
 411                 break;
 412
 413             case TGSI_TOKEN_TYPE_INSTRUCTION:
 414                 inst = &parser.FullToken.FullInstruction;
 415                 if (inst->Instruction.Opcode == TGSI_OPCODE_END) {
 416                     goto end_while;
 417                 }
 418
 419                 transform_instruction(ttr, inst);
 420                 if (ttr->error)
 421                     goto end_while;
 422                 break;
 423         }
 424     }
 425 end_while:
 426
 427     tgsi_parse_free(&parser);
 428
 429     free(ttr->imms_to_swizzle);
 430
 431     rc_calculate_inputs_outputs(ttr->compiler);
 432 }