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 "tgsi/tgsi_parse.h"
  29 #include "tgsi/tgsi_scan.h"
  30 #include "tgsi/tgsi_util.h"
  31
  32 #include "util/u_debug.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_CND0: return RC_OPCODE_CND0; */
  58      /* case TGSI_OPCODE_DP2A: return RC_OPCODE_DP2A; */
  59                                         /* gap */
  60         case TGSI_OPCODE_FRC: return RC_OPCODE_FRC;
  61      /* case TGSI_OPCODE_CLAMP: return RC_OPCODE_CLAMP; */
  62         case TGSI_OPCODE_FLR: return RC_OPCODE_FLR;
  63      /* case TGSI_OPCODE_ROUND: return RC_OPCODE_ROUND; */
  64         case TGSI_OPCODE_EX2: return RC_OPCODE_EX2;
  65         case TGSI_OPCODE_LG2: return RC_OPCODE_LG2;
  66         case TGSI_OPCODE_POW: return RC_OPCODE_POW;
  67         case TGSI_OPCODE_XPD: return RC_OPCODE_XPD;
  68                                         /* gap */
  69         case TGSI_OPCODE_ABS: return RC_OPCODE_ABS;
  70      /* case TGSI_OPCODE_RCC: return RC_OPCODE_RCC; */
  71         case TGSI_OPCODE_DPH: return RC_OPCODE_DPH;
  72         case TGSI_OPCODE_COS: return RC_OPCODE_COS;
  73         case TGSI_OPCODE_DDX: return RC_OPCODE_DDX;
  74         case TGSI_OPCODE_DDY: return RC_OPCODE_DDY;
  75      /* case TGSI_OPCODE_KILP: return RC_OPCODE_KILP; */
  76      /* case TGSI_OPCODE_PK2H: return RC_OPCODE_PK2H; */
  77      /* case TGSI_OPCODE_PK2US: return RC_OPCODE_PK2US; */
  78      /* case TGSI_OPCODE_PK4B: return RC_OPCODE_PK4B; */
  79      /* case TGSI_OPCODE_PK4UB: return RC_OPCODE_PK4UB; */
  80      /* case TGSI_OPCODE_RFL: return RC_OPCODE_RFL; */
  81         case TGSI_OPCODE_SEQ: return RC_OPCODE_SEQ;
  82         case TGSI_OPCODE_SFL: return RC_OPCODE_SFL;
  83         case TGSI_OPCODE_SGT: return RC_OPCODE_SGT;
  84         case TGSI_OPCODE_SIN: return RC_OPCODE_SIN;
  85         case TGSI_OPCODE_SLE: return RC_OPCODE_SLE;
  86         case TGSI_OPCODE_SNE: return RC_OPCODE_SNE;
  87      /* case TGSI_OPCODE_STR: return RC_OPCODE_STR; */
  88         case TGSI_OPCODE_TEX: return RC_OPCODE_TEX;
  89         case TGSI_OPCODE_TXD: return RC_OPCODE_TXD;
  90         case TGSI_OPCODE_TXP: return RC_OPCODE_TXP;
  91      /* case TGSI_OPCODE_UP2H: return RC_OPCODE_UP2H; */
  92      /* case TGSI_OPCODE_UP2US: return RC_OPCODE_UP2US; */
  93      /* case TGSI_OPCODE_UP4B: return RC_OPCODE_UP4B; */
  94      /* case TGSI_OPCODE_UP4UB: return RC_OPCODE_UP4UB; */
  95      /* case TGSI_OPCODE_X2D: return RC_OPCODE_X2D; */
  96      /* case TGSI_OPCODE_ARA: return RC_OPCODE_ARA; */
  97      /* case TGSI_OPCODE_ARR: return RC_OPCODE_ARR; */
  98      /* case TGSI_OPCODE_BRA: return RC_OPCODE_BRA; */
  99      /* case TGSI_OPCODE_CAL: return RC_OPCODE_CAL; */
 100      /* case TGSI_OPCODE_RET: return RC_OPCODE_RET; */
 101      /* case TGSI_OPCODE_SSG: return RC_OPCODE_SSG; */
 102         case TGSI_OPCODE_CMP: return RC_OPCODE_CMP;
 103         case TGSI_OPCODE_SCS: return RC_OPCODE_SCS;
 104         case TGSI_OPCODE_TXB: return RC_OPCODE_TXB;
 105      /* case TGSI_OPCODE_NRM: return RC_OPCODE_NRM; */
 106      /* case TGSI_OPCODE_DIV: return RC_OPCODE_DIV; */
 107      /* case TGSI_OPCODE_DP2: return RC_OPCODE_DP2; */
 108         case TGSI_OPCODE_TXL: return RC_OPCODE_TXL;
 109      /* case TGSI_OPCODE_BRK: return RC_OPCODE_BRK; */
 110         case TGSI_OPCODE_IF: return RC_OPCODE_IF;
 111      /* case TGSI_OPCODE_LOOP: return RC_OPCODE_LOOP; */
 112      /* case TGSI_OPCODE_REP: return RC_OPCODE_REP; */
 113         case TGSI_OPCODE_ELSE: return RC_OPCODE_ELSE;
 114         case TGSI_OPCODE_ENDIF: return RC_OPCODE_ENDIF;
 115      /* case TGSI_OPCODE_ENDLOOP: return RC_OPCODE_ENDLOOP; */
 116      /* case TGSI_OPCODE_ENDREP: return RC_OPCODE_ENDREP; */
 117      /* case TGSI_OPCODE_PUSHA: return RC_OPCODE_PUSHA; */
 118      /* case TGSI_OPCODE_POPA: return RC_OPCODE_POPA; */
 119      /* case TGSI_OPCODE_CEIL: return RC_OPCODE_CEIL; */
 120      /* case TGSI_OPCODE_I2F: return RC_OPCODE_I2F; */
 121      /* case TGSI_OPCODE_NOT: return RC_OPCODE_NOT; */
 122      /* case TGSI_OPCODE_TRUNC: return RC_OPCODE_TRUNC; */
 123      /* case TGSI_OPCODE_SHL: return RC_OPCODE_SHL; */
 124      /* case TGSI_OPCODE_ISHR: return RC_OPCODE_SHR; */
 125      /* case TGSI_OPCODE_AND: return RC_OPCODE_AND; */
 126      /* case TGSI_OPCODE_OR: return RC_OPCODE_OR; */
 127      /* case TGSI_OPCODE_MOD: return RC_OPCODE_MOD; */
 128      /* case TGSI_OPCODE_XOR: return RC_OPCODE_XOR; */
 129      /* case TGSI_OPCODE_SAD: return RC_OPCODE_SAD; */
 130      /* case TGSI_OPCODE_TXF: return RC_OPCODE_TXF; */
 131      /* case TGSI_OPCODE_TXQ: return RC_OPCODE_TXQ; */
 132      /* case TGSI_OPCODE_CONT: return RC_OPCODE_CONT; */
 133      /* case TGSI_OPCODE_EMIT: return RC_OPCODE_EMIT; */
 134      /* case TGSI_OPCODE_ENDPRIM: return RC_OPCODE_ENDPRIM; */
 135      /* case TGSI_OPCODE_BGNLOOP2: return RC_OPCODE_BGNLOOP2; */
 136      /* case TGSI_OPCODE_BGNSUB: return RC_OPCODE_BGNSUB; */
 137      /* case TGSI_OPCODE_ENDLOOP2: return RC_OPCODE_ENDLOOP2; */
 138      /* case TGSI_OPCODE_ENDSUB: return RC_OPCODE_ENDSUB; */
 139         case TGSI_OPCODE_NOP: return RC_OPCODE_NOP;
 140                                         /* gap */
 141      /* case TGSI_OPCODE_NRM4: return RC_OPCODE_NRM4; */
 142      /* case TGSI_OPCODE_CALLNZ: return RC_OPCODE_CALLNZ; */
 143      /* case TGSI_OPCODE_IFC: return RC_OPCODE_IFC; */
 144      /* case TGSI_OPCODE_BREAKC: return RC_OPCODE_BREAKC; */
 145         case TGSI_OPCODE_KIL: return RC_OPCODE_KIL;
 146     }
 147
 148     debug_printf("r300: Unknown TGSI/RC opcode: %i\n", opcode);
 149     assert(0);
 150     return RC_OPCODE_ILLEGAL_OPCODE;
 151 }
 152
 153 static unsigned translate_saturate(unsigned saturate)
 154 {
 155     switch(saturate) {
 156         default:
 157             fprintf(stderr, "Unknown saturate mode: %i\n", saturate);
 158             /* fall-through */
 159         case TGSI_SAT_NONE: return RC_SATURATE_NONE;
 160         case TGSI_SAT_ZERO_ONE: return RC_SATURATE_ZERO_ONE;
 161     }
 162 }
 163
 164 static unsigned translate_register_file(unsigned file)
 165 {
 166     switch(file) {
 167         case TGSI_FILE_CONSTANT: return RC_FILE_CONSTANT;
 168         case TGSI_FILE_IMMEDIATE: return RC_FILE_CONSTANT;
 169         case TGSI_FILE_INPUT: return RC_FILE_INPUT;
 170         case TGSI_FILE_OUTPUT: return RC_FILE_OUTPUT;
 171         default:
 172             fprintf(stderr, "Unhandled register file: %i\n", file);
 173             /* fall-through */
 174         case TGSI_FILE_TEMPORARY: return RC_FILE_TEMPORARY;
 175         case TGSI_FILE_ADDRESS: return RC_FILE_ADDRESS;
 176     }
 177 }
 178
 179 static int translate_register_index(
 180     struct tgsi_to_rc * ttr,
 181     unsigned file,
 182     int index)
 183 {
 184     if (file == TGSI_FILE_IMMEDIATE)
 185         return ttr->immediate_offset + index;
 186
 187     return index;
 188 }
 189
 190 static void transform_dstreg(
 191     struct tgsi_to_rc * ttr,
 192     struct rc_dst_register * dst,
 193     struct tgsi_full_dst_register * src)
 194 {
 195     dst->File = translate_register_file(src->Register.File);
 196     dst->Index = translate_register_index(ttr, src->Register.File, src->Register.Index);
 197     dst->WriteMask = src->Register.WriteMask;
 198     dst->RelAddr = src->Register.Indirect;
 199 }
 200
 201 static void transform_srcreg(
 202     struct tgsi_to_rc * ttr,
 203     struct rc_src_register * dst,
 204     struct tgsi_full_src_register * src)
 205 {
 206     unsigned i, j;
 207
 208     dst->File = translate_register_file(src->Register.File);
 209     dst->Index = translate_register_index(ttr, src->Register.File, src->Register.Index);
 210     dst->RelAddr = src->Register.Indirect;
 211     dst->Swizzle = tgsi_util_get_full_src_register_swizzle(src, 0);
 212     dst->Swizzle |= tgsi_util_get_full_src_register_swizzle(src, 1) << 3;
 213     dst->Swizzle |= tgsi_util_get_full_src_register_swizzle(src, 2) << 6;
 214     dst->Swizzle |= tgsi_util_get_full_src_register_swizzle(src, 3) << 9;
 215     dst->Abs = src->Register.Absolute;
 216     dst->Negate = src->Register.Negate ? RC_MASK_XYZW : 0;
 217
 218     if (src->Register.File == TGSI_FILE_IMMEDIATE) {
 219         for (i = 0; i < ttr->imms_to_swizzle_count; i++) {
 220             if (ttr->imms_to_swizzle[i].index == src->Register.Index) {
 221                 dst->File = RC_FILE_TEMPORARY;
 222                 dst->Index = 0;
 223                 dst->Swizzle = 0;
 224                 for (j = 0; j < 4; j++) {
 225                     dst->Swizzle |= GET_SWZ(ttr->imms_to_swizzle[i].swizzle,
 226                         tgsi_util_get_full_src_register_swizzle(src, j)) << (j * 3);
 227                 }
 228                 break;
 229             }
 230         }
 231     }
 232 }
 233
 234 static void transform_texture(struct rc_instruction * dst, struct tgsi_instruction_texture src,
 235                               uint32_t *shadowSamplers)
 236 {
 237     switch(src.Texture) {
 238         case TGSI_TEXTURE_1D:
 239             dst->U.I.TexSrcTarget = RC_TEXTURE_1D;
 240             break;
 241         case TGSI_TEXTURE_2D:
 242             dst->U.I.TexSrcTarget = RC_TEXTURE_2D;
 243             break;
 244         case TGSI_TEXTURE_3D:
 245             dst->U.I.TexSrcTarget = RC_TEXTURE_3D;
 246             break;
 247         case TGSI_TEXTURE_CUBE:
 248             dst->U.I.TexSrcTarget = RC_TEXTURE_CUBE;
 249             break;
 250         case TGSI_TEXTURE_RECT:
 251             dst->U.I.TexSrcTarget = RC_TEXTURE_RECT;
 252             break;
 253         case TGSI_TEXTURE_SHADOW1D:
 254             dst->U.I.TexSrcTarget = RC_TEXTURE_1D;
 255             dst->U.I.TexShadow = 1;
 256             *shadowSamplers |= 1 << dst->U.I.TexSrcUnit;
 257             break;
 258         case TGSI_TEXTURE_SHADOW2D:
 259             dst->U.I.TexSrcTarget = RC_TEXTURE_2D;
 260             dst->U.I.TexShadow = 1;
 261             *shadowSamplers |= 1 << dst->U.I.TexSrcUnit;
 262             break;
 263         case TGSI_TEXTURE_SHADOWRECT:
 264             dst->U.I.TexSrcTarget = RC_TEXTURE_RECT;
 265             dst->U.I.TexShadow = 1;
 266             *shadowSamplers |= 1 << dst->U.I.TexSrcUnit;
 267             break;
 268     }
 269 }
 270
 271 static void transform_instruction(struct tgsi_to_rc * ttr, struct tgsi_full_instruction * src)
 272 {
 273     struct rc_instruction * dst;
 274     int i;
 275
 276     if (src->Instruction.Opcode == TGSI_OPCODE_END)
 277         return;
 278
 279     dst = rc_insert_new_instruction(ttr->compiler, ttr->compiler->Program.Instructions.Prev);
 280     dst->U.I.Opcode = translate_opcode(src->Instruction.Opcode);
 281     dst->U.I.SaturateMode = translate_saturate(src->Instruction.Saturate);
 282
 283     if (src->Instruction.NumDstRegs)
 284         transform_dstreg(ttr, &dst->U.I.DstReg, &src->Dst[0]);
 285
 286     for(i = 0; i < src->Instruction.NumSrcRegs; ++i) {
 287         if (src->Src[i].Register.File == TGSI_FILE_SAMPLER)
 288             dst->U.I.TexSrcUnit = src->Src[i].Register.Index;
 289         else
 290             transform_srcreg(ttr, &dst->U.I.SrcReg[i], &src->Src[i]);
 291     }
 292
 293     /* Texturing. */
 294     if (src->Instruction.Texture)
 295         transform_texture(dst, src->Texture,
 296                           &ttr->compiler->Program.ShadowSamplers);
 297 }
 298
 299 static void handle_immediate(struct tgsi_to_rc * ttr,
 300                              struct tgsi_full_immediate * imm,
 301                              unsigned index)
 302 {
 303     struct rc_constant constant;
 304     unsigned swizzle = 0;
 305     boolean can_swizzle = TRUE;
 306     unsigned i;
 307
 308     for (i = 0; i < 4; i++) {
 309         if (imm->u[i].Float == 0.0f) {
 310             swizzle |= RC_SWIZZLE_ZERO << (i * 3);
 311         } else if (imm->u[i].Float == 0.5f) {
 312             swizzle |= RC_SWIZZLE_HALF << (i * 3);
 313         } else if (imm->u[i].Float == 1.0f) {
 314             swizzle |= RC_SWIZZLE_ONE << (i * 3);
 315         } else {
 316             can_swizzle = FALSE;
 317             break;
 318         }
 319     }
 320
 321     if (can_swizzle) {
 322         ttr->imms_to_swizzle[ttr->imms_to_swizzle_count].index = index;
 323         ttr->imms_to_swizzle[ttr->imms_to_swizzle_count].swizzle = swizzle;
 324         ttr->imms_to_swizzle_count++;
 325     } else {
 326         constant.Type = RC_CONSTANT_IMMEDIATE;
 327         constant.Size = 4;
 328         for(i = 0; i < 4; ++i)
 329             constant.u.Immediate[i] = imm->u[i].Float;
 330         rc_constants_add(&ttr->compiler->Program.Constants, &constant);
 331     }
 332 }
 333
 334 void r300_tgsi_to_rc(struct tgsi_to_rc * ttr, const struct tgsi_token * tokens)
 335 {
 336     struct tgsi_parse_context parser;
 337     unsigned imm_index = 0;
 338     int i;
 339
 340     /* Allocate constants placeholders.
 341      *
 342      * Note: What if declared constants are not contiguous? */
 343     for(i = 0; i <= ttr->info->file_max[TGSI_FILE_CONSTANT]; ++i) {
 344         struct rc_constant constant;
 345         memset(&constant, 0, sizeof(constant));
 346         constant.Type = RC_CONSTANT_EXTERNAL;
 347         constant.Size = 4;
 348         constant.u.External = i;
 349         rc_constants_add(&ttr->compiler->Program.Constants, &constant);
 350     }
 351
 352     ttr->immediate_offset = ttr->compiler->Program.Constants.Count;
 353
 354     ttr->imms_to_swizzle = malloc(ttr->info->immediate_count * sizeof(struct swizzled_imms));
 355     ttr->imms_to_swizzle_count = 0;
 356
 357     tgsi_parse_init(&parser, tokens);
 358
 359     while (!tgsi_parse_end_of_tokens(&parser)) {
 360         tgsi_parse_token(&parser);
 361
 362         switch (parser.FullToken.Token.Type) {
 363             case TGSI_TOKEN_TYPE_DECLARATION:
 364                 break;
 365             case TGSI_TOKEN_TYPE_IMMEDIATE:
 366                 handle_immediate(ttr, &parser.FullToken.FullImmediate, imm_index);
 367                 imm_index++;
 368                 break;
 369             case TGSI_TOKEN_TYPE_INSTRUCTION:
 370                 transform_instruction(ttr, &parser.FullToken.FullInstruction);
 371                 break;
 372         }
 373     }
 374
 375     tgsi_parse_free(&parser);
 376
 377     free(ttr->imms_to_swizzle);
 378
 379     rc_calculate_inputs_outputs(ttr->compiler);
 380 }
 381