src/gallium/include/pipe/p_shader_tokens.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * Copyright 2009-2010 VMware, Inc.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 #ifndef P_SHADER_TOKENS_H
  30 #define P_SHADER_TOKENS_H
  31
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 #include "p_compiler.h"
  37
  38
  39 struct tgsi_header
  40 {
  41    unsigned HeaderSize : 8;
  42    unsigned BodySize   : 24;
  43 };
  44
  45 #define TGSI_PROCESSOR_FRAGMENT  0
  46 #define TGSI_PROCESSOR_VERTEX    1
  47 #define TGSI_PROCESSOR_GEOMETRY  2
  48
  49 struct tgsi_processor
  50 {
  51    unsigned Processor  : 4;  /* TGSI_PROCESSOR_ */
  52    unsigned Padding    : 28;
  53 };
  54
  55 #define TGSI_TOKEN_TYPE_DECLARATION    0
  56 #define TGSI_TOKEN_TYPE_IMMEDIATE      1
  57 #define TGSI_TOKEN_TYPE_INSTRUCTION    2
  58 #define TGSI_TOKEN_TYPE_PROPERTY       3
  59
  60 struct tgsi_token
  61 {
  62    unsigned Type       : 4;  /**< TGSI_TOKEN_TYPE_x */
  63    unsigned NrTokens   : 8;  /**< UINT */
  64    unsigned Padding    : 20;
  65 };
  66
  67 enum tgsi_file_type {
  68    TGSI_FILE_NULL         =0,
  69    TGSI_FILE_CONSTANT     =1,
  70    TGSI_FILE_INPUT        =2,
  71    TGSI_FILE_OUTPUT       =3,
  72    TGSI_FILE_TEMPORARY    =4,
  73    TGSI_FILE_SAMPLER      =5,
  74    TGSI_FILE_ADDRESS      =6,
  75    TGSI_FILE_IMMEDIATE    =7,
  76    TGSI_FILE_LOOP         =8,
  77    TGSI_FILE_PREDICATE    =9,
  78    TGSI_FILE_SYSTEM_VALUE =10,
  79    TGSI_FILE_COUNT      /**< how many TGSI_FILE_ types */
  80 };
  81
  82
  83 #define TGSI_WRITEMASK_NONE     0x00
  84 #define TGSI_WRITEMASK_X        0x01
  85 #define TGSI_WRITEMASK_Y        0x02
  86 #define TGSI_WRITEMASK_XY       0x03
  87 #define TGSI_WRITEMASK_Z        0x04
  88 #define TGSI_WRITEMASK_XZ       0x05
  89 #define TGSI_WRITEMASK_YZ       0x06
  90 #define TGSI_WRITEMASK_XYZ      0x07
  91 #define TGSI_WRITEMASK_W        0x08
  92 #define TGSI_WRITEMASK_XW       0x09
  93 #define TGSI_WRITEMASK_YW       0x0A
  94 #define TGSI_WRITEMASK_XYW      0x0B
  95 #define TGSI_WRITEMASK_ZW       0x0C
  96 #define TGSI_WRITEMASK_XZW      0x0D
  97 #define TGSI_WRITEMASK_YZW      0x0E
  98 #define TGSI_WRITEMASK_XYZW     0x0F
  99
 100 #define TGSI_INTERPOLATE_CONSTANT      0
 101 #define TGSI_INTERPOLATE_LINEAR        1
 102 #define TGSI_INTERPOLATE_PERSPECTIVE   2
 103 #define TGSI_INTERPOLATE_COUNT         3
 104
 105 #define TGSI_CYLINDRICAL_WRAP_X (1 << 0)
 106 #define TGSI_CYLINDRICAL_WRAP_Y (1 << 1)
 107 #define TGSI_CYLINDRICAL_WRAP_Z (1 << 2)
 108 #define TGSI_CYLINDRICAL_WRAP_W (1 << 3)
 109
 110 struct tgsi_declaration
 111 {
 112    unsigned Type        : 4;  /**< TGSI_TOKEN_TYPE_DECLARATION */
 113    unsigned NrTokens    : 8;  /**< UINT */
 114    unsigned File        : 4;  /**< one of TGSI_FILE_x */
 115    unsigned UsageMask   : 4;  /**< bitmask of TGSI_WRITEMASK_x flags */
 116    unsigned Interpolate : 4;  /**< one of TGSI_INTERPOLATE_x */
 117    unsigned Dimension   : 1;  /**< any extra dimension info? */
 118    unsigned Semantic    : 1;  /**< BOOL, any semantic info? */
 119    unsigned Centroid    : 1;  /**< centroid sampling? */
 120    unsigned Invariant   : 1;  /**< invariant optimization? */
 121    unsigned CylindricalWrap:4;   /**< TGSI_CYLINDRICAL_WRAP_x flags */
 122 };
 123
 124 struct tgsi_declaration_range
 125 {
 126    unsigned First   : 16; /**< UINT */
 127    unsigned Last    : 16; /**< UINT */
 128 };
 129
 130 struct tgsi_declaration_dimension
 131 {
 132    unsigned Index2D:16; /**< UINT */
 133    unsigned Padding:16;
 134 };
 135
 136 #define TGSI_SEMANTIC_POSITION   0
 137 #define TGSI_SEMANTIC_COLOR      1
 138 #define TGSI_SEMANTIC_BCOLOR     2  /**< back-face color */
 139 #define TGSI_SEMANTIC_FOG        3
 140 #define TGSI_SEMANTIC_PSIZE      4
 141 #define TGSI_SEMANTIC_GENERIC    5
 142 #define TGSI_SEMANTIC_NORMAL     6
 143 #define TGSI_SEMANTIC_FACE       7
 144 #define TGSI_SEMANTIC_EDGEFLAG   8
 145 #define TGSI_SEMANTIC_PRIMID     9
 146 #define TGSI_SEMANTIC_INSTANCEID 10
 147 #define TGSI_SEMANTIC_COUNT      11 /**< number of semantic values */
 148
 149 struct tgsi_declaration_semantic
 150 {
 151    unsigned Name           : 8;  /**< one of TGSI_SEMANTIC_x */
 152    unsigned Index          : 16; /**< UINT */
 153    unsigned Padding        : 8;
 154 };
 155
 156 #define TGSI_IMM_FLOAT32   0
 157 #define TGSI_IMM_UINT32    1
 158 #define TGSI_IMM_INT32     2
 159
 160 struct tgsi_immediate
 161 {
 162    unsigned Type       : 4;  /**< TGSI_TOKEN_TYPE_IMMEDIATE */
 163    unsigned NrTokens   : 8;  /**< UINT */
 164    unsigned DataType   : 4;  /**< one of TGSI_IMM_x */
 165    unsigned Padding    : 16;
 166 };
 167
 168 union tgsi_immediate_data
 169 {
 170    float Float;
 171    unsigned Uint;
 172    int Int;
 173 };
 174
 175 #define TGSI_PROPERTY_GS_INPUT_PRIM          0
 176 #define TGSI_PROPERTY_GS_OUTPUT_PRIM         1
 177 #define TGSI_PROPERTY_GS_MAX_VERTICES        2
 178 #define TGSI_PROPERTY_FS_COORD_ORIGIN        3
 179 #define TGSI_PROPERTY_FS_COORD_PIXEL_CENTER  4
 180 #define TGSI_PROPERTY_COUNT                  5
 181
 182 struct tgsi_property {
 183    unsigned Type         : 4;  /**< TGSI_TOKEN_TYPE_PROPERTY */
 184    unsigned NrTokens     : 8;  /**< UINT */
 185    unsigned PropertyName : 8;  /**< one of TGSI_PROPERTY */
 186    unsigned Padding      : 12;
 187 };
 188
 189 #define TGSI_FS_COORD_ORIGIN_UPPER_LEFT 0
 190 #define TGSI_FS_COORD_ORIGIN_LOWER_LEFT 1
 191
 192 #define TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER 0
 193 #define TGSI_FS_COORD_PIXEL_CENTER_INTEGER 1
 194
 195 struct tgsi_property_data {
 196    unsigned Data;
 197 };
 198
 199 /* TGSI opcodes.
 200  *
 201  * For more information on semantics of opcodes and
 202  * which APIs are known to use which opcodes, see
 203  * auxiliary/tgsi/tgsi-instruction-set.txt
 204  */
 205 #define TGSI_OPCODE_ARL                 0
 206 #define TGSI_OPCODE_MOV                 1
 207 #define TGSI_OPCODE_LIT                 2
 208 #define TGSI_OPCODE_RCP                 3
 209 #define TGSI_OPCODE_RSQ                 4
 210 #define TGSI_OPCODE_EXP                 5
 211 #define TGSI_OPCODE_LOG                 6
 212 #define TGSI_OPCODE_MUL                 7
 213 #define TGSI_OPCODE_ADD                 8
 214 #define TGSI_OPCODE_DP3                 9
 215 #define TGSI_OPCODE_DP4                 10
 216 #define TGSI_OPCODE_DST                 11
 217 #define TGSI_OPCODE_MIN                 12
 218 #define TGSI_OPCODE_MAX                 13
 219 #define TGSI_OPCODE_SLT                 14
 220 #define TGSI_OPCODE_SGE                 15
 221 #define TGSI_OPCODE_MAD                 16
 222 #define TGSI_OPCODE_SUB                 17
 223 #define TGSI_OPCODE_LRP                 18
 224 #define TGSI_OPCODE_CND                 19
 225                                 /* gap */
 226 #define TGSI_OPCODE_DP2A                21
 227                                 /* gap */
 228 #define TGSI_OPCODE_FRC                 24
 229 #define TGSI_OPCODE_CLAMP               25
 230 #define TGSI_OPCODE_FLR                 26
 231 #define TGSI_OPCODE_ROUND               27
 232 #define TGSI_OPCODE_EX2                 28
 233 #define TGSI_OPCODE_LG2                 29
 234 #define TGSI_OPCODE_POW                 30
 235 #define TGSI_OPCODE_XPD                 31
 236                                 /* gap */
 237 #define TGSI_OPCODE_ABS                 33
 238 #define TGSI_OPCODE_RCC                 34
 239 #define TGSI_OPCODE_DPH                 35
 240 #define TGSI_OPCODE_COS                 36
 241 #define TGSI_OPCODE_DDX                 37
 242 #define TGSI_OPCODE_DDY                 38
 243 #define TGSI_OPCODE_KILP                39  /* predicated kill */
 244 #define TGSI_OPCODE_PK2H                40
 245 #define TGSI_OPCODE_PK2US               41
 246 #define TGSI_OPCODE_PK4B                42
 247 #define TGSI_OPCODE_PK4UB               43
 248 #define TGSI_OPCODE_RFL                 44
 249 #define TGSI_OPCODE_SEQ                 45
 250 #define TGSI_OPCODE_SFL                 46
 251 #define TGSI_OPCODE_SGT                 47
 252 #define TGSI_OPCODE_SIN                 48
 253 #define TGSI_OPCODE_SLE                 49
 254 #define TGSI_OPCODE_SNE                 50
 255 #define TGSI_OPCODE_STR                 51
 256 #define TGSI_OPCODE_TEX                 52
 257 #define TGSI_OPCODE_TXD                 53
 258 #define TGSI_OPCODE_TXP                 54
 259 #define TGSI_OPCODE_UP2H                55
 260 #define TGSI_OPCODE_UP2US               56
 261 #define TGSI_OPCODE_UP4B                57
 262 #define TGSI_OPCODE_UP4UB               58
 263 #define TGSI_OPCODE_X2D                 59
 264 #define TGSI_OPCODE_ARA                 60
 265 #define TGSI_OPCODE_ARR                 61
 266 #define TGSI_OPCODE_BRA                 62
 267 #define TGSI_OPCODE_CAL                 63
 268 #define TGSI_OPCODE_RET                 64
 269 #define TGSI_OPCODE_SSG                 65 /* SGN */
 270 #define TGSI_OPCODE_CMP                 66
 271 #define TGSI_OPCODE_SCS                 67
 272 #define TGSI_OPCODE_TXB                 68
 273 #define TGSI_OPCODE_NRM                 69
 274 #define TGSI_OPCODE_DIV                 70
 275 #define TGSI_OPCODE_DP2                 71
 276 #define TGSI_OPCODE_TXL                 72
 277 #define TGSI_OPCODE_BRK                 73
 278 #define TGSI_OPCODE_IF                  74
 279                                 /* gap */
 280 #define TGSI_OPCODE_ELSE                77
 281 #define TGSI_OPCODE_ENDIF               78
 282                                 /* gap */
 283 #define TGSI_OPCODE_PUSHA               81
 284 #define TGSI_OPCODE_POPA                82
 285 #define TGSI_OPCODE_CEIL                83
 286 #define TGSI_OPCODE_I2F                 84
 287 #define TGSI_OPCODE_NOT                 85
 288 #define TGSI_OPCODE_TRUNC               86
 289 #define TGSI_OPCODE_SHL                 87
 290                                 /* gap */
 291 #define TGSI_OPCODE_AND                 89
 292 #define TGSI_OPCODE_OR                  90
 293 #define TGSI_OPCODE_MOD                 91
 294 #define TGSI_OPCODE_XOR                 92
 295 #define TGSI_OPCODE_SAD                 93
 296 #define TGSI_OPCODE_TXF                 94
 297 #define TGSI_OPCODE_TXQ                 95
 298 #define TGSI_OPCODE_CONT                96
 299 #define TGSI_OPCODE_EMIT                97
 300 #define TGSI_OPCODE_ENDPRIM             98
 301 #define TGSI_OPCODE_BGNLOOP             99
 302 #define TGSI_OPCODE_BGNSUB              100
 303 #define TGSI_OPCODE_ENDLOOP             101
 304 #define TGSI_OPCODE_ENDSUB              102
 305                                 /* gap */
 306 #define TGSI_OPCODE_NOP                 107
 307                                 /* gap */
 308 #define TGSI_OPCODE_NRM4                112
 309 #define TGSI_OPCODE_CALLNZ              113
 310 #define TGSI_OPCODE_IFC                 114
 311 #define TGSI_OPCODE_BREAKC              115
 312 #define TGSI_OPCODE_KIL                 116  /* conditional kill */
 313 #define TGSI_OPCODE_END                 117  /* aka HALT */
 314                                 /* gap */
 315 #define TGSI_OPCODE_F2I                 119
 316 #define TGSI_OPCODE_IDIV                120
 317 #define TGSI_OPCODE_IMAX                121
 318 #define TGSI_OPCODE_IMIN                122
 319 #define TGSI_OPCODE_INEG                123
 320 #define TGSI_OPCODE_ISGE                124
 321 #define TGSI_OPCODE_ISHR                125
 322 #define TGSI_OPCODE_ISLT                126
 323 #define TGSI_OPCODE_F2U                 127
 324 #define TGSI_OPCODE_U2F                 128
 325 #define TGSI_OPCODE_UADD                129
 326 #define TGSI_OPCODE_UDIV                130
 327 #define TGSI_OPCODE_UMAD                131
 328 #define TGSI_OPCODE_UMAX                132
 329 #define TGSI_OPCODE_UMIN                133
 330 #define TGSI_OPCODE_UMOD                134
 331 #define TGSI_OPCODE_UMUL                135
 332 #define TGSI_OPCODE_USEQ                136
 333 #define TGSI_OPCODE_USGE                137
 334 #define TGSI_OPCODE_USHR                138
 335 #define TGSI_OPCODE_USLT                139
 336 #define TGSI_OPCODE_USNE                140
 337 #define TGSI_OPCODE_SWITCH              141
 338 #define TGSI_OPCODE_CASE                142
 339 #define TGSI_OPCODE_DEFAULT             143
 340 #define TGSI_OPCODE_ENDSWITCH           144
 341 #define TGSI_OPCODE_LAST                145
 342
 343 #define TGSI_SAT_NONE            0  /* do not saturate */
 344 #define TGSI_SAT_ZERO_ONE        1  /* clamp to [0,1] */
 345 #define TGSI_SAT_MINUS_PLUS_ONE  2  /* clamp to [-1,1] */
 346
 347 /**
 348  * Opcode is the operation code to execute. A given operation defines the
 349  * semantics how the source registers (if any) are interpreted and what is
 350  * written to the destination registers (if any) as a result of execution.
 351  *
 352  * NumDstRegs and NumSrcRegs is the number of destination and source registers,
 353  * respectively. For a given operation code, those numbers are fixed and are
 354  * present here only for convenience.
 355  *
 356  * If Predicate is TRUE, tgsi_instruction_predicate token immediately follows.
 357  *
 358  * Saturate controls how are final results in destination registers modified.
 359  */
 360
 361 struct tgsi_instruction
 362 {
 363    unsigned Type       : 4;  /* TGSI_TOKEN_TYPE_INSTRUCTION */
 364    unsigned NrTokens   : 8;  /* UINT */
 365    unsigned Opcode     : 8;  /* TGSI_OPCODE_ */
 366    unsigned Saturate   : 2;  /* TGSI_SAT_ */
 367    unsigned NumDstRegs : 2;  /* UINT */
 368    unsigned NumSrcRegs : 4;  /* UINT */
 369    unsigned Predicate  : 1;  /* BOOL */
 370    unsigned Label      : 1;
 371    unsigned Texture    : 1;
 372    unsigned Padding    : 1;
 373 };
 374
 375 /*
 376  * If tgsi_instruction::Label is TRUE, tgsi_instruction_label follows.
 377  *
 378  * If tgsi_instruction::Texture is TRUE, tgsi_instruction_texture follows.
 379  *
 380  * Then, tgsi_instruction::NumDstRegs of tgsi_dst_register follow.
 381  *
 382  * Then, tgsi_instruction::NumSrcRegs of tgsi_src_register follow.
 383  *
 384  * tgsi_instruction::NrTokens contains the total number of words that make the
 385  * instruction, including the instruction word.
 386  */
 387
 388 #define TGSI_SWIZZLE_X      0
 389 #define TGSI_SWIZZLE_Y      1
 390 #define TGSI_SWIZZLE_Z      2
 391 #define TGSI_SWIZZLE_W      3
 392
 393 struct tgsi_instruction_label
 394 {
 395    unsigned Label    : 24;   /* UINT */
 396    unsigned Padding  : 8;
 397 };
 398
 399 #define TGSI_TEXTURE_UNKNOWN        0
 400 #define TGSI_TEXTURE_1D             1
 401 #define TGSI_TEXTURE_2D             2
 402 #define TGSI_TEXTURE_3D             3
 403 #define TGSI_TEXTURE_CUBE           4
 404 #define TGSI_TEXTURE_RECT           5
 405 #define TGSI_TEXTURE_SHADOW1D       6
 406 #define TGSI_TEXTURE_SHADOW2D       7
 407 #define TGSI_TEXTURE_SHADOWRECT     8
 408 #define TGSI_TEXTURE_COUNT          9
 409
 410 struct tgsi_instruction_texture
 411 {
 412    unsigned Texture  : 8;    /* TGSI_TEXTURE_ */
 413    unsigned Padding  : 24;
 414 };
 415
 416 /*
 417  * For SM3, the following constraint applies.
 418  *   - Swizzle is either set to identity or replicate.
 419  */
 420 struct tgsi_instruction_predicate
 421 {
 422    int      Index    : 16; /* SINT */
 423    unsigned SwizzleX : 2;  /* TGSI_SWIZZLE_x */
 424    unsigned SwizzleY : 2;  /* TGSI_SWIZZLE_x */
 425    unsigned SwizzleZ : 2;  /* TGSI_SWIZZLE_x */
 426    unsigned SwizzleW : 2;  /* TGSI_SWIZZLE_x */
 427    unsigned Negate   : 1;  /* BOOL */
 428    unsigned Padding  : 7;
 429 };
 430
 431 /**
 432  * File specifies the register array to access.
 433  *
 434  * Index specifies the element number of a register in the register file.
 435  *
 436  * If Indirect is TRUE, Index should be offset by the X component of a source
 437  * register that follows. The register can be now fetched into local storage
 438  * for further processing.
 439  *
 440  * If Negate is TRUE, all components of the fetched register are negated.
 441  *
 442  * The fetched register components are swizzled according to SwizzleX, SwizzleY,
 443  * SwizzleZ and SwizzleW.
 444  *
 445  */
 446
 447 struct tgsi_src_register
 448 {
 449    unsigned File        : 4;  /* TGSI_FILE_ */
 450    unsigned Indirect    : 1;  /* BOOL */
 451    unsigned Dimension   : 1;  /* BOOL */
 452    int      Index       : 16; /* SINT */
 453    unsigned SwizzleX    : 2;  /* TGSI_SWIZZLE_ */
 454    unsigned SwizzleY    : 2;  /* TGSI_SWIZZLE_ */
 455    unsigned SwizzleZ    : 2;  /* TGSI_SWIZZLE_ */
 456    unsigned SwizzleW    : 2;  /* TGSI_SWIZZLE_ */
 457    unsigned Absolute    : 1;    /* BOOL */
 458    unsigned Negate      : 1;    /* BOOL */
 459 };
 460
 461 /**
 462  * If tgsi_src_register::Modifier is TRUE, tgsi_src_register_modifier follows.
 463  *
 464  * Then, if tgsi_src_register::Indirect is TRUE, another tgsi_src_register
 465  * follows.
 466  *
 467  * Then, if tgsi_src_register::Dimension is TRUE, tgsi_dimension follows.
 468  */
 469
 470
 471 struct tgsi_dimension
 472 {
 473    unsigned Indirect    : 1;  /* BOOL */
 474    unsigned Dimension   : 1;  /* BOOL */
 475    unsigned Padding     : 14;
 476    int      Index       : 16; /* SINT */
 477 };
 478
 479 struct tgsi_dst_register
 480 {
 481    unsigned File        : 4;  /* TGSI_FILE_ */
 482    unsigned WriteMask   : 4;  /* TGSI_WRITEMASK_ */
 483    unsigned Indirect    : 1;  /* BOOL */
 484    unsigned Dimension   : 1;  /* BOOL */
 485    int      Index       : 16; /* SINT */
 486    unsigned Padding     : 6;
 487 };
 488
 489
 490 #ifdef __cplusplus
 491 }
 492 #endif
 493
 494 #endif /* P_SHADER_TOKENS_H */