src/mesa/drivers/dri/r300/compiler/r500_fragprog.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@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 "../r300_reg.h"
  33
  34 /**
  35  * Rewrite IF instructions to use the ALU result special register.
  36  */
  37 int r500_transform_IF(
  38         struct radeon_compiler * c,
  39         struct rc_instruction * inst,
  40         void* data)
  41 {
  42         struct rc_instruction * inst_mov;
  43
  44         if (inst->U.I.Opcode != RC_OPCODE_IF)
  45                 return 0;
  46
  47         inst_mov = rc_insert_new_instruction(c, inst->Prev);
  48         inst_mov->U.I.Opcode = RC_OPCODE_MOV;
  49         inst_mov->U.I.DstReg.WriteMask = 0;
  50         inst_mov->U.I.WriteALUResult = RC_ALURESULT_W;
  51         inst_mov->U.I.ALUResultCompare = RC_COMPARE_FUNC_NOTEQUAL;
  52         inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
  53         inst_mov->U.I.SrcReg[0].Swizzle = combine_swizzles4(inst_mov->U.I.SrcReg[0].Swizzle,
  54                         RC_SWIZZLE_UNUSED, RC_SWIZZLE_UNUSED, RC_SWIZZLE_UNUSED, RC_SWIZZLE_X);
  55
  56         inst->U.I.SrcReg[0].File = RC_FILE_SPECIAL;
  57         inst->U.I.SrcReg[0].Index = RC_SPECIAL_ALU_RESULT;
  58         inst->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_XYZW;
  59         inst->U.I.SrcReg[0].Negate = 0;
  60
  61         return 1;
  62 }
  63
  64 static int r500_swizzle_is_native(rc_opcode opcode, struct rc_src_register reg)
  65 {
  66         unsigned int relevant;
  67         int i;
  68
  69         if (opcode == RC_OPCODE_TEX ||
  70             opcode == RC_OPCODE_TXB ||
  71             opcode == RC_OPCODE_TXP ||
  72             opcode == RC_OPCODE_KIL) {
  73                 if (reg.Abs)
  74                         return 0;
  75
  76                 if (opcode == RC_OPCODE_KIL && (reg.Swizzle != RC_SWIZZLE_XYZW || reg.Negate != RC_MASK_NONE))
  77                         return 0;
  78
  79                 if (reg.Negate)
  80                         reg.Negate ^= RC_MASK_XYZW;
  81
  82                 for(i = 0; i < 4; ++i) {
  83                         unsigned int swz = GET_SWZ(reg.Swizzle, i);
  84                         if (swz == RC_SWIZZLE_UNUSED) {
  85                                 reg.Negate &= ~(1 << i);
  86                                 continue;
  87                         }
  88                         if (swz >= 4)
  89                                 return 0;
  90                 }
  91
  92                 if (reg.Negate)
  93                         return 0;
  94
  95                 return 1;
  96         } else if (opcode == RC_OPCODE_DDX || opcode == RC_OPCODE_DDY) {
  97                 /* DDX/MDH and DDY/MDV explicitly ignore incoming swizzles;
  98                  * if it doesn't fit perfectly into a .xyzw case... */
  99                 if (reg.Swizzle == RC_SWIZZLE_XYZW && !reg.Abs && !reg.Negate)
 100                         return 1;
 101
 102                 return 0;
 103         } else {
 104                 /* ALU instructions support almost everything */
 105                 if (reg.Abs)
 106                         return 1;
 107
 108                 relevant = 0;
 109                 for(i = 0; i < 3; ++i) {
 110                         unsigned int swz = GET_SWZ(reg.Swizzle, i);
 111                         if (swz != RC_SWIZZLE_UNUSED && swz != RC_SWIZZLE_ZERO)
 112                                 relevant |= 1 << i;
 113                 }
 114                 if ((reg.Negate & relevant) && ((reg.Negate & relevant) != relevant))
 115                         return 0;
 116
 117                 return 1;
 118         }
 119 }
 120
 121 /**
 122  * Split source register access.
 123  *
 124  * The only thing we *cannot* do in an ALU instruction is per-component
 125  * negation.
 126  */
 127 static void r500_swizzle_split(struct rc_src_register src, unsigned int usemask,
 128                 struct rc_swizzle_split * split)
 129 {
 130         unsigned int negatebase[2] = { 0, 0 };
 131         int i;
 132
 133         for(i = 0; i < 4; ++i) {
 134                 unsigned int swz = GET_SWZ(src.Swizzle, i);
 135                 if (swz == RC_SWIZZLE_UNUSED || !GET_BIT(usemask, i))
 136                         continue;
 137                 negatebase[GET_BIT(src.Negate, i)] |= 1 << i;
 138         }
 139
 140         split->NumPhases = 0;
 141
 142         for(i = 0; i <= 1; ++i) {
 143                 if (!negatebase[i])
 144                         continue;
 145
 146                 split->Phase[split->NumPhases++] = negatebase[i];
 147         }
 148 }
 149
 150 struct rc_swizzle_caps r500_swizzle_caps = {
 151         .IsNative = r500_swizzle_is_native,
 152         .Split = r500_swizzle_split
 153 };
 154
 155 static char *toswiz(int swiz_val) {
 156   switch(swiz_val) {
 157   case 0: return "R";
 158   case 1: return "G";
 159   case 2: return "B";
 160   case 3: return "A";
 161   case 4: return "0";
 162   case 5: return "H";
 163   case 6: return "1";
 164   case 7: return "U";
 165   }
 166   return NULL;
 167 }
 168
 169 static char *toop(int op_val)
 170 {
 171   char *str = NULL;
 172   switch (op_val) {
 173   case 0: str = "MAD"; break;
 174   case 1: str = "DP3"; break;
 175   case 2: str = "DP4"; break;
 176   case 3: str = "D2A"; break;
 177   case 4: str = "MIN"; break;
 178   case 5: str = "MAX"; break;
 179   case 6: str = "Reserved"; break;
 180   case 7: str = "CND"; break;
 181   case 8: str = "CMP"; break;
 182   case 9: str = "FRC"; break;
 183   case 10: str = "SOP"; break;
 184   case 11: str = "MDH"; break;
 185   case 12: str = "MDV"; break;
 186   }
 187   return str;
 188 }
 189
 190 static char *to_alpha_op(int op_val)
 191 {
 192   char *str = NULL;
 193   switch (op_val) {
 194   case 0: str = "MAD"; break;
 195   case 1: str = "DP"; break;
 196   case 2: str = "MIN"; break;
 197   case 3: str = "MAX"; break;
 198   case 4: str = "Reserved"; break;
 199   case 5: str = "CND"; break;
 200   case 6: str = "CMP"; break;
 201   case 7: str = "FRC"; break;
 202   case 8: str = "EX2"; break;
 203   case 9: str = "LN2"; break;
 204   case 10: str = "RCP"; break;
 205   case 11: str = "RSQ"; break;
 206   case 12: str = "SIN"; break;
 207   case 13: str = "COS"; break;
 208   case 14: str = "MDH"; break;
 209   case 15: str = "MDV"; break;
 210   }
 211   return str;
 212 }
 213
 214 static char *to_mask(int val)
 215 {
 216   char *str = NULL;
 217   switch(val) {
 218   case 0: str = "NONE"; break;
 219   case 1: str = "R"; break;
 220   case 2: str = "G"; break;
 221   case 3: str = "RG"; break;
 222   case 4: str = "B"; break;
 223   case 5: str = "RB"; break;
 224   case 6: str = "GB"; break;
 225   case 7: str = "RGB"; break;
 226   case 8: str = "A"; break;
 227   case 9: str = "AR"; break;
 228   case 10: str = "AG"; break;
 229   case 11: str = "ARG"; break;
 230   case 12: str = "AB"; break;
 231   case 13: str = "ARB"; break;
 232   case 14: str = "AGB"; break;
 233   case 15: str = "ARGB"; break;
 234   }
 235   return str;
 236 }
 237
 238 static char *to_texop(int val)
 239 {
 240   switch(val) {
 241   case 0: return "NOP";
 242   case 1: return "LD";
 243   case 2: return "TEXKILL";
 244   case 3: return "PROJ";
 245   case 4: return "LODBIAS";
 246   case 5: return "LOD";
 247   case 6: return "DXDY";
 248   }
 249   return NULL;
 250 }
 251
 252 void r500FragmentProgramDump(struct radeon_compiler *c, void *user)
 253 {
 254   struct r300_fragment_program_compiler *compiler = (struct r300_fragment_program_compiler*)c;
 255   struct r500_fragment_program_code *code = &compiler->code->code.r500;
 256   int n, i;
 257   uint32_t inst;
 258   uint32_t inst0;
 259   char *str = NULL;
 260   fprintf(stderr, "R500 Fragment Program:\n--------\n");
 261
 262   for (n = 0; n < code->inst_end+1; n++) {
 263     inst0 = inst = code->inst[n].inst0;
 264     fprintf(stderr,"%d\t0:CMN_INST   0x%08x:", n, inst);
 265     switch(inst & 0x3) {
 266     case R500_INST_TYPE_ALU: str = "ALU"; break;
 267     case R500_INST_TYPE_OUT: str = "OUT"; break;
 268     case R500_INST_TYPE_FC: str = "FC"; break;
 269     case R500_INST_TYPE_TEX: str = "TEX"; break;
 270     };
 271     fprintf(stderr,"%s %s %s %s %s ", str,
 272             inst & R500_INST_TEX_SEM_WAIT ? "TEX_WAIT" : "",
 273             inst & R500_INST_LAST ? "LAST" : "",
 274             inst & R500_INST_NOP ? "NOP" : "",
 275             inst & R500_INST_ALU_WAIT ? "ALU WAIT" : "");
 276     fprintf(stderr,"wmask: %s omask: %s\n", to_mask((inst >> 11) & 0xf),
 277             to_mask((inst >> 15) & 0xf));
 278
 279     switch(inst0 & 0x3) {
 280     case R500_INST_TYPE_ALU:
 281     case R500_INST_TYPE_OUT:
 282       fprintf(stderr,"\t1:RGB_ADDR   0x%08x:", code->inst[n].inst1);
 283       inst = code->inst[n].inst1;
 284
 285       fprintf(stderr,"Addr0: %d%c, Addr1: %d%c, Addr2: %d%c, srcp:%d\n",
 286               inst & 0xff, (inst & (1<<8)) ? 'c' : 't',
 287               (inst >> 10) & 0xff, (inst & (1<<18)) ? 'c' : 't',
 288               (inst >> 20) & 0xff, (inst & (1<<28)) ? 'c' : 't',
 289               (inst >> 30));
 290
 291       fprintf(stderr,"\t2:ALPHA_ADDR 0x%08x:", code->inst[n].inst2);
 292       inst = code->inst[n].inst2;
 293       fprintf(stderr,"Addr0: %d%c, Addr1: %d%c, Addr2: %d%c, srcp:%d\n",
 294               inst & 0xff, (inst & (1<<8)) ? 'c' : 't',
 295               (inst >> 10) & 0xff, (inst & (1<<18)) ? 'c' : 't',
 296               (inst >> 20) & 0xff, (inst & (1<<28)) ? 'c' : 't',
 297               (inst >> 30));
 298       fprintf(stderr,"\t3 RGB_INST:  0x%08x:", code->inst[n].inst3);
 299       inst = code->inst[n].inst3;
 300       fprintf(stderr,"rgb_A_src:%d %s/%s/%s %d rgb_B_src:%d %s/%s/%s %d targ: %d\n",
 301               (inst) & 0x3, toswiz((inst >> 2) & 0x7), toswiz((inst >> 5) & 0x7), toswiz((inst >> 8) & 0x7),
 302               (inst >> 11) & 0x3,
 303               (inst >> 13) & 0x3, toswiz((inst >> 15) & 0x7), toswiz((inst >> 18) & 0x7), toswiz((inst >> 21) & 0x7),
 304               (inst >> 24) & 0x3, (inst >> 29) & 0x3);
 305
 306
 307       fprintf(stderr,"\t4 ALPHA_INST:0x%08x:", code->inst[n].inst4);
 308       inst = code->inst[n].inst4;
 309       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),
 310               (inst >> 4) & 0x7f, inst & (1<<11) ? "(rel)":"",
 311               (inst >> 12) & 0x3, toswiz((inst >> 14) & 0x7), (inst >> 17) & 0x3,
 312               (inst >> 19) & 0x3, toswiz((inst >> 21) & 0x7), (inst >> 24) & 0x3,
 313               (inst >> 29) & 0x3,
 314               (inst >> 31) & 0x1);
 315
 316       fprintf(stderr,"\t5 RGBA_INST: 0x%08x:", code->inst[n].inst5);
 317       inst = code->inst[n].inst5;
 318       fprintf(stderr,"%s dest:%d%s rgb_C_src:%d %s/%s/%s %d alp_C_src:%d %s %d\n", toop(inst & 0xf),
 319               (inst >> 4) & 0x7f, inst & (1<<11) ? "(rel)":"",
 320               (inst >> 12) & 0x3, toswiz((inst >> 14) & 0x7), toswiz((inst >> 17) & 0x7), toswiz((inst >> 20) & 0x7),
 321               (inst >> 23) & 0x3,
 322               (inst >> 25) & 0x3, toswiz((inst >> 27) & 0x7), (inst >> 30) & 0x3);
 323       break;
 324     case R500_INST_TYPE_FC:
 325       fprintf(stderr, "\t2:FC_INST    0x%08x:", code->inst[n].inst2);
 326       inst = code->inst[n].inst2;
 327       /* JUMP_FUNC JUMP_ANY*/
 328       fprintf(stderr, "0x%02x %1x ", inst >> 8 & 0xff,
 329           (inst & R500_FC_JUMP_ANY) >> 5);
 330
 331       /* OP */
 332       switch(inst & 0x7){
 333       case R500_FC_OP_JUMP:
 334         fprintf(stderr, "JUMP");
 335         break;
 336       case R500_FC_OP_LOOP:
 337         fprintf(stderr, "LOOP");
 338         break;
 339       case R500_FC_OP_ENDLOOP:
 340         fprintf(stderr, "ENDLOOP");
 341         break;
 342       case R500_FC_OP_REP:
 343         fprintf(stderr, "REP");
 344         break;
 345       case R500_FC_OP_ENDREP:
 346         fprintf(stderr, "ENDREP");
 347         break;
 348       case R500_FC_OP_BREAKLOOP:
 349         fprintf(stderr, "BREAKLOOP");
 350         break;
 351       case R500_FC_OP_BREAKREP:
 352         fprintf(stderr, "BREAKREP");
 353         break;
 354       case R500_FC_OP_CONTINUE:
 355         fprintf(stderr, "CONTINUE");
 356         break;
 357       }
 358       fprintf(stderr," ");
 359       /* A_OP */
 360       switch(inst & (0x3 << 6)){
 361       case R500_FC_A_OP_NONE:
 362         fprintf(stderr, "NONE");
 363         break;
 364       case R500_FC_A_OP_POP:
 365         fprintf(stderr, "POP");
 366         break;
 367       case R500_FC_A_OP_PUSH:
 368         fprintf(stderr, "PUSH");
 369         break;
 370       }
 371       /* B_OP0 B_OP1 */
 372       for(i=0; i<2; i++){
 373         fprintf(stderr, " ");
 374         switch(inst & (0x3 << (24 + (i * 2)))){
 375         /* R500_FC_B_OP0_NONE
 376          * R500_FC_B_OP1_NONE */
 377         case 0:
 378           fprintf(stderr, "NONE");
 379           break;
 380         case R500_FC_B_OP0_DECR:
 381         case R500_FC_B_OP1_DECR:
 382           fprintf(stderr, "DECR");
 383           break;
 384         case R500_FC_B_OP0_INCR:
 385         case R500_FC_B_OP1_INCR:
 386           fprintf(stderr, "INCR");
 387           break;
 388         }
 389       }
 390       /*POP_CNT B_ELSE */
 391       fprintf(stderr, " %d %1x", (inst >> 16) & 0x1f, (inst & R500_FC_B_ELSE) >> 4);
 392       inst = code->inst[n].inst3;
 393       /* JUMP_ADDR */
 394       fprintf(stderr, " %d", inst >> 16);
 395
 396       if(code->inst[n].inst2 & R500_FC_IGNORE_UNCOVERED){
 397         fprintf(stderr, " IGN_UNC");
 398       }
 399       inst = code->inst[n].inst3;
 400       fprintf(stderr, "\n\t3:FC_ADDR    0x%08x:", inst);
 401       fprintf(stderr, "BOOL: 0x%02x, INT: 0x%02x, JUMP_ADDR: %d, JMP_GLBL: %1x\n",
 402       inst & 0x1f, (inst >> 8) & 0x1f, (inst >> 16) & 0x1ff, inst >> 31);
 403       break;
 404     case R500_INST_TYPE_TEX:
 405       inst = code->inst[n].inst1;
 406       fprintf(stderr,"\t1:TEX_INST:  0x%08x: id: %d op:%s, %s, %s %s\n", inst, (inst >> 16) & 0xf,
 407               to_texop((inst >> 22) & 0x7), (inst & (1<<25)) ? "ACQ" : "",
 408               (inst & (1<<26)) ? "IGNUNC" : "", (inst & (1<<27)) ? "UNSCALED" : "SCALED");
 409       inst = code->inst[n].inst2;
 410       fprintf(stderr,"\t2:TEX_ADDR:  0x%08x: src: %d%s %s/%s/%s/%s dst: %d%s %s/%s/%s/%s\n", inst,
 411               inst & 127, inst & (1<<7) ? "(rel)" : "",
 412               toswiz((inst >> 8) & 0x3), toswiz((inst >> 10) & 0x3),
 413               toswiz((inst >> 12) & 0x3), toswiz((inst >> 14) & 0x3),
 414               (inst >> 16) & 127, inst & (1<<23) ? "(rel)" : "",
 415               toswiz((inst >> 24) & 0x3), toswiz((inst >> 26) & 0x3),
 416               toswiz((inst >> 28) & 0x3), toswiz((inst >> 30) & 0x3));
 417
 418       fprintf(stderr,"\t3:TEX_DXDY:  0x%08x\n", code->inst[n].inst3);
 419       break;
 420     }
 421     fprintf(stderr,"\n");
 422   }
 423
 424 }