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
  37 struct tgsi_header
  38 {
  39    unsigned HeaderSize : 8;
  40    unsigned BodySize   : 24;
  41 };
  42
  43 #define TGSI_PROCESSOR_FRAGMENT  0
  44 #define TGSI_PROCESSOR_VERTEX    1
  45 #define TGSI_PROCESSOR_GEOMETRY  2
  46 #define TGSI_PROCESSOR_COMPUTE   3
  47
  48 struct tgsi_processor
  49 {
  50    unsigned Processor  : 4;  /* TGSI_PROCESSOR_ */
  51    unsigned Padding    : 28;
  52 };
  53
  54 #define TGSI_TOKEN_TYPE_DECLARATION    0
  55 #define TGSI_TOKEN_TYPE_IMMEDIATE      1
  56 #define TGSI_TOKEN_TYPE_INSTRUCTION    2
  57 #define TGSI_TOKEN_TYPE_PROPERTY       3
  58
  59 struct tgsi_token
  60 {
  61    unsigned Type       : 4;  /**< TGSI_TOKEN_TYPE_x */
  62    unsigned NrTokens   : 8;  /**< UINT */
  63    unsigned Padding    : 20;
  64 };
  65
  66 enum tgsi_file_type {
  67    TGSI_FILE_NULL                =0,
  68    TGSI_FILE_CONSTANT            =1,
  69    TGSI_FILE_INPUT               =2,
  70    TGSI_FILE_OUTPUT              =3,
  71    TGSI_FILE_TEMPORARY           =4,
  72    TGSI_FILE_SAMPLER             =5,
  73    TGSI_FILE_ADDRESS             =6,
  74    TGSI_FILE_IMMEDIATE           =7,
  75    TGSI_FILE_PREDICATE           =8,
  76    TGSI_FILE_SYSTEM_VALUE        =9,
  77    TGSI_FILE_RESOURCE            =10,
  78    TGSI_FILE_SAMPLER_VIEW        =11,
  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_COLOR         3 /* special color case for smooth/flat */
 104 #define TGSI_INTERPOLATE_COUNT         4
 105
 106 #define TGSI_CYLINDRICAL_WRAP_X (1 << 0)
 107 #define TGSI_CYLINDRICAL_WRAP_Y (1 << 1)
 108 #define TGSI_CYLINDRICAL_WRAP_Z (1 << 2)
 109 #define TGSI_CYLINDRICAL_WRAP_W (1 << 3)
 110
 111 struct tgsi_declaration
 112 {
 113    unsigned Type        : 4;  /**< TGSI_TOKEN_TYPE_DECLARATION */
 114    unsigned NrTokens    : 8;  /**< UINT */
 115    unsigned File        : 4;  /**< one of TGSI_FILE_x */
 116    unsigned UsageMask   : 4;  /**< bitmask of TGSI_WRITEMASK_x flags */
 117    unsigned Dimension   : 1;  /**< any extra dimension info? */
 118    unsigned Semantic    : 1;  /**< BOOL, any semantic info? */
 119    unsigned Interpolate : 1;  /**< any interpolation info? */
 120    unsigned Invariant   : 1;  /**< invariant optimization? */
 121    unsigned Local       : 1;  /**< optimize as subroutine local variable? */
 122    unsigned Array       : 1;  /**< extra array info? */
 123    unsigned Padding     : 6;
 124 };
 125
 126 struct tgsi_declaration_range
 127 {
 128    unsigned First   : 16; /**< UINT */
 129    unsigned Last    : 16; /**< UINT */
 130 };
 131
 132 struct tgsi_declaration_dimension
 133 {
 134    unsigned Index2D:16; /**< UINT */
 135    unsigned Padding:16;
 136 };
 137
 138 struct tgsi_declaration_interp
 139 {
 140    unsigned Interpolate : 4;   /**< one of TGSI_INTERPOLATE_x */
 141    unsigned Centroid    : 1;   /**< centroid sampling? */
 142    unsigned CylindricalWrap:4; /**< TGSI_CYLINDRICAL_WRAP_x flags */
 143    unsigned Padding     : 23;
 144 };
 145
 146 #define TGSI_SEMANTIC_POSITION   0
 147 #define TGSI_SEMANTIC_COLOR      1
 148 #define TGSI_SEMANTIC_BCOLOR     2  /**< back-face color */
 149 #define TGSI_SEMANTIC_FOG        3
 150 #define TGSI_SEMANTIC_PSIZE      4
 151 #define TGSI_SEMANTIC_GENERIC    5
 152 #define TGSI_SEMANTIC_NORMAL     6
 153 #define TGSI_SEMANTIC_FACE       7
 154 #define TGSI_SEMANTIC_EDGEFLAG   8
 155 #define TGSI_SEMANTIC_PRIMID     9
 156 #define TGSI_SEMANTIC_INSTANCEID 10
 157 #define TGSI_SEMANTIC_VERTEXID   11
 158 #define TGSI_SEMANTIC_STENCIL    12
 159 #define TGSI_SEMANTIC_CLIPDIST   13
 160 #define TGSI_SEMANTIC_CLIPVERTEX 14
 161 #define TGSI_SEMANTIC_GRID_SIZE  15 /**< grid size in blocks */
 162 #define TGSI_SEMANTIC_BLOCK_ID   16 /**< id of the current block */
 163 #define TGSI_SEMANTIC_BLOCK_SIZE 17 /**< block size in threads */
 164 #define TGSI_SEMANTIC_THREAD_ID  18 /**< block-relative id of the current thread */
 165 #define TGSI_SEMANTIC_TEXCOORD   19 /**< texture or sprite coordinates */
 166 #define TGSI_SEMANTIC_PCOORD     20 /**< point sprite coordinate */
 167 #define TGSI_SEMANTIC_VIEWPORT_INDEX 21 /**< viewport index */
 168 #define TGSI_SEMANTIC_LAYER      22 /**< layer (rendertarget index) */
 169 #define TGSI_SEMANTIC_CULLDIST   23
 170 #define TGSI_SEMANTIC_COUNT      24 /**< number of semantic values */
 171
 172 struct tgsi_declaration_semantic
 173 {
 174    unsigned Name           : 8;  /**< one of TGSI_SEMANTIC_x */
 175    unsigned Index          : 16; /**< UINT */
 176    unsigned Padding        : 8;
 177 };
 178
 179 struct tgsi_declaration_resource {
 180    unsigned Resource    : 8; /**< one of TGSI_TEXTURE_ */
 181    unsigned Raw         : 1;
 182    unsigned Writable    : 1;
 183    unsigned Padding     : 22;
 184 };
 185
 186 struct tgsi_declaration_sampler_view {
 187    unsigned Resource    : 8; /**< one of TGSI_TEXTURE_ */
 188    unsigned ReturnTypeX : 6; /**< one of enum pipe_type */
 189    unsigned ReturnTypeY : 6; /**< one of enum pipe_type */
 190    unsigned ReturnTypeZ : 6; /**< one of enum pipe_type */
 191    unsigned ReturnTypeW : 6; /**< one of enum pipe_type */
 192 };
 193
 194 struct tgsi_declaration_array {
 195    unsigned ArrayID : 10;
 196    unsigned Padding : 22;
 197 };
 198
 199 /*
 200  * Special resources that don't need to be declared.  They map to the
 201  * GLOBAL/LOCAL/PRIVATE/INPUT compute memory spaces.
 202  */
 203 #define TGSI_RESOURCE_GLOBAL    0x7fff
 204 #define TGSI_RESOURCE_LOCAL     0x7ffe
 205 #define TGSI_RESOURCE_PRIVATE   0x7ffd
 206 #define TGSI_RESOURCE_INPUT     0x7ffc
 207
 208 #define TGSI_IMM_FLOAT32   0
 209 #define TGSI_IMM_UINT32    1
 210 #define TGSI_IMM_INT32     2
 211
 212 struct tgsi_immediate
 213 {
 214    unsigned Type       : 4;  /**< TGSI_TOKEN_TYPE_IMMEDIATE */
 215    unsigned NrTokens   : 14; /**< UINT */
 216    unsigned DataType   : 4;  /**< one of TGSI_IMM_x */
 217    unsigned Padding    : 10;
 218 };
 219
 220 union tgsi_immediate_data
 221 {
 222    float Float;
 223    unsigned Uint;
 224    int Int;
 225 };
 226
 227 #define TGSI_PROPERTY_GS_INPUT_PRIM          0
 228 #define TGSI_PROPERTY_GS_OUTPUT_PRIM         1
 229 #define TGSI_PROPERTY_GS_MAX_OUTPUT_VERTICES 2
 230 #define TGSI_PROPERTY_FS_COORD_ORIGIN        3
 231 #define TGSI_PROPERTY_FS_COORD_PIXEL_CENTER  4
 232 #define TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS 5
 233 #define TGSI_PROPERTY_FS_DEPTH_LAYOUT        6
 234 #define TGSI_PROPERTY_VS_PROHIBIT_UCPS       7
 235 #define TGSI_PROPERTY_COUNT                  8
 236
 237 struct tgsi_property {
 238    unsigned Type         : 4;  /**< TGSI_TOKEN_TYPE_PROPERTY */
 239    unsigned NrTokens     : 8;  /**< UINT */
 240    unsigned PropertyName : 8;  /**< one of TGSI_PROPERTY */
 241    unsigned Padding      : 12;
 242 };
 243
 244 #define TGSI_FS_COORD_ORIGIN_UPPER_LEFT 0
 245 #define TGSI_FS_COORD_ORIGIN_LOWER_LEFT 1
 246
 247 #define TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER 0
 248 #define TGSI_FS_COORD_PIXEL_CENTER_INTEGER 1
 249
 250 #define TGSI_FS_DEPTH_LAYOUT_NONE         0
 251 #define TGSI_FS_DEPTH_LAYOUT_ANY          1
 252 #define TGSI_FS_DEPTH_LAYOUT_GREATER      2
 253 #define TGSI_FS_DEPTH_LAYOUT_LESS         3
 254 #define TGSI_FS_DEPTH_LAYOUT_UNCHANGED    4
 255
 256
 257 struct tgsi_property_data {
 258    unsigned Data;
 259 };
 260
 261 /* TGSI opcodes.
 262  *
 263  * For more information on semantics of opcodes and
 264  * which APIs are known to use which opcodes, see
 265  * gallium/docs/source/tgsi.rst
 266  */
 267 #define TGSI_OPCODE_ARL                 0
 268 #define TGSI_OPCODE_MOV                 1
 269 #define TGSI_OPCODE_LIT                 2
 270 #define TGSI_OPCODE_RCP                 3
 271 #define TGSI_OPCODE_RSQ                 4
 272 #define TGSI_OPCODE_EXP                 5
 273 #define TGSI_OPCODE_LOG                 6
 274 #define TGSI_OPCODE_MUL                 7
 275 #define TGSI_OPCODE_ADD                 8
 276 #define TGSI_OPCODE_DP3                 9
 277 #define TGSI_OPCODE_DP4                 10
 278 #define TGSI_OPCODE_DST                 11
 279 #define TGSI_OPCODE_MIN                 12
 280 #define TGSI_OPCODE_MAX                 13
 281 #define TGSI_OPCODE_SLT                 14
 282 #define TGSI_OPCODE_SGE                 15
 283 #define TGSI_OPCODE_MAD                 16
 284 #define TGSI_OPCODE_SUB                 17
 285 #define TGSI_OPCODE_LRP                 18
 286 #define TGSI_OPCODE_CND                 19
 287 #define TGSI_OPCODE_SQRT                20
 288 #define TGSI_OPCODE_DP2A                21
 289                                 /* gap */
 290 #define TGSI_OPCODE_FRC                 24
 291 #define TGSI_OPCODE_CLAMP               25
 292 #define TGSI_OPCODE_FLR                 26
 293 #define TGSI_OPCODE_ROUND               27
 294 #define TGSI_OPCODE_EX2                 28
 295 #define TGSI_OPCODE_LG2                 29
 296 #define TGSI_OPCODE_POW                 30
 297 #define TGSI_OPCODE_XPD                 31
 298                                 /* gap */
 299 #define TGSI_OPCODE_ABS                 33
 300 #define TGSI_OPCODE_RCC                 34
 301 #define TGSI_OPCODE_DPH                 35
 302 #define TGSI_OPCODE_COS                 36
 303 #define TGSI_OPCODE_DDX                 37
 304 #define TGSI_OPCODE_DDY                 38
 305 #define TGSI_OPCODE_KILL                39 /* unconditional */
 306 #define TGSI_OPCODE_PK2H                40
 307 #define TGSI_OPCODE_PK2US               41
 308 #define TGSI_OPCODE_PK4B                42
 309 #define TGSI_OPCODE_PK4UB               43
 310 #define TGSI_OPCODE_RFL                 44
 311 #define TGSI_OPCODE_SEQ                 45
 312 #define TGSI_OPCODE_SFL                 46
 313 #define TGSI_OPCODE_SGT                 47
 314 #define TGSI_OPCODE_SIN                 48
 315 #define TGSI_OPCODE_SLE                 49
 316 #define TGSI_OPCODE_SNE                 50
 317 #define TGSI_OPCODE_STR                 51
 318 #define TGSI_OPCODE_TEX                 52
 319 #define TGSI_OPCODE_TXD                 53
 320 #define TGSI_OPCODE_TXP                 54
 321 #define TGSI_OPCODE_UP2H                55
 322 #define TGSI_OPCODE_UP2US               56
 323 #define TGSI_OPCODE_UP4B                57
 324 #define TGSI_OPCODE_UP4UB               58
 325 #define TGSI_OPCODE_X2D                 59
 326 #define TGSI_OPCODE_ARA                 60
 327 #define TGSI_OPCODE_ARR                 61
 328 #define TGSI_OPCODE_BRA                 62
 329 #define TGSI_OPCODE_CAL                 63
 330 #define TGSI_OPCODE_RET                 64
 331 #define TGSI_OPCODE_SSG                 65 /* SGN */
 332 #define TGSI_OPCODE_CMP                 66
 333 #define TGSI_OPCODE_SCS                 67
 334 #define TGSI_OPCODE_TXB                 68
 335 #define TGSI_OPCODE_NRM                 69
 336 #define TGSI_OPCODE_DIV                 70
 337 #define TGSI_OPCODE_DP2                 71
 338 #define TGSI_OPCODE_TXL                 72
 339 #define TGSI_OPCODE_BRK                 73
 340 #define TGSI_OPCODE_IF                  74
 341 #define TGSI_OPCODE_UIF                 75
 342 #define TGSI_OPCODE_ELSE                77
 343 #define TGSI_OPCODE_ENDIF               78
 344                                 /* gap */
 345 #define TGSI_OPCODE_PUSHA               81
 346 #define TGSI_OPCODE_POPA                82
 347 #define TGSI_OPCODE_CEIL                83
 348 #define TGSI_OPCODE_I2F                 84
 349 #define TGSI_OPCODE_NOT                 85
 350 #define TGSI_OPCODE_TRUNC               86
 351 #define TGSI_OPCODE_SHL                 87
 352                                 /* gap */
 353 #define TGSI_OPCODE_AND                 89
 354 #define TGSI_OPCODE_OR                  90
 355 #define TGSI_OPCODE_MOD                 91
 356 #define TGSI_OPCODE_XOR                 92
 357 #define TGSI_OPCODE_SAD                 93
 358 #define TGSI_OPCODE_TXF                 94
 359 #define TGSI_OPCODE_TXQ                 95
 360 #define TGSI_OPCODE_CONT                96
 361 #define TGSI_OPCODE_EMIT                97
 362 #define TGSI_OPCODE_ENDPRIM             98
 363 #define TGSI_OPCODE_BGNLOOP             99
 364 #define TGSI_OPCODE_BGNSUB              100
 365 #define TGSI_OPCODE_ENDLOOP             101
 366 #define TGSI_OPCODE_ENDSUB              102
 367 #define TGSI_OPCODE_TXQ_LZ              103 /* TXQ for mipmap level 0 */
 368                                 /* gap */
 369 #define TGSI_OPCODE_NOP                 107
 370
 371 #define TGSI_OPCODE_FSEQ                108
 372 #define TGSI_OPCODE_FSGE                109
 373 #define TGSI_OPCODE_FSLT                110
 374 #define TGSI_OPCODE_FSNE                111
 375
 376 #define TGSI_OPCODE_NRM4                112
 377 #define TGSI_OPCODE_CALLNZ              113
 378                                 /* gap */
 379 #define TGSI_OPCODE_BREAKC              115
 380 #define TGSI_OPCODE_KILL_IF             116  /* conditional kill */
 381 #define TGSI_OPCODE_END                 117  /* aka HALT */
 382                                 /* gap */
 383 #define TGSI_OPCODE_F2I                 119
 384 #define TGSI_OPCODE_IDIV                120
 385 #define TGSI_OPCODE_IMAX                121
 386 #define TGSI_OPCODE_IMIN                122
 387 #define TGSI_OPCODE_INEG                123
 388 #define TGSI_OPCODE_ISGE                124
 389 #define TGSI_OPCODE_ISHR                125
 390 #define TGSI_OPCODE_ISLT                126
 391 #define TGSI_OPCODE_F2U                 127
 392 #define TGSI_OPCODE_U2F                 128
 393 #define TGSI_OPCODE_UADD                129
 394 #define TGSI_OPCODE_UDIV                130
 395 #define TGSI_OPCODE_UMAD                131
 396 #define TGSI_OPCODE_UMAX                132
 397 #define TGSI_OPCODE_UMIN                133
 398 #define TGSI_OPCODE_UMOD                134
 399 #define TGSI_OPCODE_UMUL                135
 400 #define TGSI_OPCODE_USEQ                136
 401 #define TGSI_OPCODE_USGE                137
 402 #define TGSI_OPCODE_USHR                138
 403 #define TGSI_OPCODE_USLT                139
 404 #define TGSI_OPCODE_USNE                140
 405 #define TGSI_OPCODE_SWITCH              141
 406 #define TGSI_OPCODE_CASE                142
 407 #define TGSI_OPCODE_DEFAULT             143
 408 #define TGSI_OPCODE_ENDSWITCH           144
 409
 410 /* resource related opcodes */
 411 #define TGSI_OPCODE_SAMPLE              145
 412 #define TGSI_OPCODE_SAMPLE_I            146
 413 #define TGSI_OPCODE_SAMPLE_I_MS         147
 414 #define TGSI_OPCODE_SAMPLE_B            148
 415 #define TGSI_OPCODE_SAMPLE_C            149
 416 #define TGSI_OPCODE_SAMPLE_C_LZ         150
 417 #define TGSI_OPCODE_SAMPLE_D            151
 418 #define TGSI_OPCODE_SAMPLE_L            152
 419 #define TGSI_OPCODE_GATHER4             153
 420 #define TGSI_OPCODE_SVIEWINFO           154
 421 #define TGSI_OPCODE_SAMPLE_POS          155
 422 #define TGSI_OPCODE_SAMPLE_INFO         156
 423
 424 #define TGSI_OPCODE_UARL                157
 425 #define TGSI_OPCODE_UCMP                158
 426 #define TGSI_OPCODE_IABS                159
 427 #define TGSI_OPCODE_ISSG                160
 428
 429 #define TGSI_OPCODE_LOAD                161
 430 #define TGSI_OPCODE_STORE               162
 431
 432 #define TGSI_OPCODE_MFENCE              163
 433 #define TGSI_OPCODE_LFENCE              164
 434 #define TGSI_OPCODE_SFENCE              165
 435 #define TGSI_OPCODE_BARRIER             166
 436
 437 #define TGSI_OPCODE_ATOMUADD            167
 438 #define TGSI_OPCODE_ATOMXCHG            168
 439 #define TGSI_OPCODE_ATOMCAS             169
 440 #define TGSI_OPCODE_ATOMAND             170
 441 #define TGSI_OPCODE_ATOMOR              171
 442 #define TGSI_OPCODE_ATOMXOR             172
 443 #define TGSI_OPCODE_ATOMUMIN            173
 444 #define TGSI_OPCODE_ATOMUMAX            174
 445 #define TGSI_OPCODE_ATOMIMIN            175
 446 #define TGSI_OPCODE_ATOMIMAX            176
 447
 448 /* to be used for shadow cube map compares */
 449 #define TGSI_OPCODE_TEX2                177
 450 #define TGSI_OPCODE_TXB2                178
 451 #define TGSI_OPCODE_TXL2                179
 452
 453 #define TGSI_OPCODE_LAST                180
 454
 455 #define TGSI_SAT_NONE            0  /* do not saturate */
 456 #define TGSI_SAT_ZERO_ONE        1  /* clamp to [0,1] */
 457 #define TGSI_SAT_MINUS_PLUS_ONE  2  /* clamp to [-1,1] */
 458
 459 /**
 460  * Opcode is the operation code to execute. A given operation defines the
 461  * semantics how the source registers (if any) are interpreted and what is
 462  * written to the destination registers (if any) as a result of execution.
 463  *
 464  * NumDstRegs and NumSrcRegs is the number of destination and source registers,
 465  * respectively. For a given operation code, those numbers are fixed and are
 466  * present here only for convenience.
 467  *
 468  * If Predicate is TRUE, tgsi_instruction_predicate token immediately follows.
 469  *
 470  * Saturate controls how are final results in destination registers modified.
 471  */
 472
 473 struct tgsi_instruction
 474 {
 475    unsigned Type       : 4;  /* TGSI_TOKEN_TYPE_INSTRUCTION */
 476    unsigned NrTokens   : 8;  /* UINT */
 477    unsigned Opcode     : 8;  /* TGSI_OPCODE_ */
 478    unsigned Saturate   : 2;  /* TGSI_SAT_ */
 479    unsigned NumDstRegs : 2;  /* UINT */
 480    unsigned NumSrcRegs : 4;  /* UINT */
 481    unsigned Predicate  : 1;  /* BOOL */
 482    unsigned Label      : 1;
 483    unsigned Texture    : 1;
 484    unsigned Padding    : 1;
 485 };
 486
 487 /*
 488  * If tgsi_instruction::Label is TRUE, tgsi_instruction_label follows.
 489  *
 490  * If tgsi_instruction::Texture is TRUE, tgsi_instruction_texture follows.
 491  *   if texture instruction has a number of offsets,
 492  *   then tgsi_instruction::Texture::NumOffset of tgsi_texture_offset follow.
 493  *
 494  * Then, tgsi_instruction::NumDstRegs of tgsi_dst_register follow.
 495  *
 496  * Then, tgsi_instruction::NumSrcRegs of tgsi_src_register follow.
 497  *
 498  * tgsi_instruction::NrTokens contains the total number of words that make the
 499  * instruction, including the instruction word.
 500  */
 501
 502 #define TGSI_SWIZZLE_X      0
 503 #define TGSI_SWIZZLE_Y      1
 504 #define TGSI_SWIZZLE_Z      2
 505 #define TGSI_SWIZZLE_W      3
 506
 507 struct tgsi_instruction_label
 508 {
 509    unsigned Label    : 24;   /* UINT */
 510    unsigned Padding  : 8;
 511 };
 512
 513 #define TGSI_TEXTURE_BUFFER         0
 514 #define TGSI_TEXTURE_1D             1
 515 #define TGSI_TEXTURE_2D             2
 516 #define TGSI_TEXTURE_3D             3
 517 #define TGSI_TEXTURE_CUBE           4
 518 #define TGSI_TEXTURE_RECT           5
 519 #define TGSI_TEXTURE_SHADOW1D       6
 520 #define TGSI_TEXTURE_SHADOW2D       7
 521 #define TGSI_TEXTURE_SHADOWRECT     8
 522 #define TGSI_TEXTURE_1D_ARRAY       9
 523 #define TGSI_TEXTURE_2D_ARRAY       10
 524 #define TGSI_TEXTURE_SHADOW1D_ARRAY 11
 525 #define TGSI_TEXTURE_SHADOW2D_ARRAY 12
 526 #define TGSI_TEXTURE_SHADOWCUBE     13
 527 #define TGSI_TEXTURE_2D_MSAA        14
 528 #define TGSI_TEXTURE_2D_ARRAY_MSAA  15
 529 #define TGSI_TEXTURE_CUBE_ARRAY     16
 530 #define TGSI_TEXTURE_SHADOWCUBE_ARRAY 17
 531 #define TGSI_TEXTURE_UNKNOWN        18
 532 #define TGSI_TEXTURE_COUNT          19
 533
 534 struct tgsi_instruction_texture
 535 {
 536    unsigned Texture  : 8;    /* TGSI_TEXTURE_ */
 537    unsigned NumOffsets : 4;
 538    unsigned Padding : 20;
 539 };
 540
 541 /* for texture offsets in GLSL and DirectX.
 542  * Generally these always come from TGSI_FILE_IMMEDIATE,
 543  * however DX11 appears to have the capability to do
 544  * non-constant texture offsets.
 545  */
 546 struct tgsi_texture_offset
 547 {
 548    int      Index    : 16;
 549    unsigned File     : 4;  /**< one of TGSI_FILE_x */
 550    unsigned SwizzleX : 2;  /* TGSI_SWIZZLE_x */
 551    unsigned SwizzleY : 2;  /* TGSI_SWIZZLE_x */
 552    unsigned SwizzleZ : 2;  /* TGSI_SWIZZLE_x */
 553    unsigned Padding  : 6;
 554 };
 555
 556 /*
 557  * For SM3, the following constraint applies.
 558  *   - Swizzle is either set to identity or replicate.
 559  */
 560 struct tgsi_instruction_predicate
 561 {
 562    int      Index    : 16; /* SINT */
 563    unsigned SwizzleX : 2;  /* TGSI_SWIZZLE_x */
 564    unsigned SwizzleY : 2;  /* TGSI_SWIZZLE_x */
 565    unsigned SwizzleZ : 2;  /* TGSI_SWIZZLE_x */
 566    unsigned SwizzleW : 2;  /* TGSI_SWIZZLE_x */
 567    unsigned Negate   : 1;  /* BOOL */
 568    unsigned Padding  : 7;
 569 };
 570
 571 /**
 572  * File specifies the register array to access.
 573  *
 574  * Index specifies the element number of a register in the register file.
 575  *
 576  * If Indirect is TRUE, Index should be offset by the X component of the indirect
 577  * register that follows. The register can be now fetched into local storage
 578  * for further processing.
 579  *
 580  * If Negate is TRUE, all components of the fetched register are negated.
 581  *
 582  * The fetched register components are swizzled according to SwizzleX, SwizzleY,
 583  * SwizzleZ and SwizzleW.
 584  *
 585  */
 586
 587 struct tgsi_src_register
 588 {
 589    unsigned File        : 4;  /* TGSI_FILE_ */
 590    unsigned Indirect    : 1;  /* BOOL */
 591    unsigned Dimension   : 1;  /* BOOL */
 592    int      Index       : 16; /* SINT */
 593    unsigned SwizzleX    : 2;  /* TGSI_SWIZZLE_ */
 594    unsigned SwizzleY    : 2;  /* TGSI_SWIZZLE_ */
 595    unsigned SwizzleZ    : 2;  /* TGSI_SWIZZLE_ */
 596    unsigned SwizzleW    : 2;  /* TGSI_SWIZZLE_ */
 597    unsigned Absolute    : 1;    /* BOOL */
 598    unsigned Negate      : 1;    /* BOOL */
 599 };
 600
 601 /**
 602  * If tgsi_src_register::Indirect is TRUE, tgsi_ind_register follows.
 603  *
 604  * File, Index and Swizzle are handled the same as in tgsi_src_register.
 605  *
 606  * If ArrayID is zero the whole register file might be is indirectly addressed,
 607  * if not only the Declaration with this ArrayID is accessed by this operand.
 608  *
 609  */
 610
 611 struct tgsi_ind_register
 612 {
 613    unsigned File    : 4;  /* TGSI_FILE_ */
 614    int      Index   : 16; /* SINT */
 615    unsigned Swizzle : 2;  /* TGSI_SWIZZLE_ */
 616    unsigned ArrayID : 10; /* UINT */
 617 };
 618
 619 /**
 620  * If tgsi_src_register::Dimension is TRUE, tgsi_dimension follows.
 621  */
 622
 623 struct tgsi_dimension
 624 {
 625    unsigned Indirect    : 1;  /* BOOL */
 626    unsigned Dimension   : 1;  /* BOOL */
 627    unsigned Padding     : 14;
 628    int      Index       : 16; /* SINT */
 629 };
 630
 631 struct tgsi_dst_register
 632 {
 633    unsigned File        : 4;  /* TGSI_FILE_ */
 634    unsigned WriteMask   : 4;  /* TGSI_WRITEMASK_ */
 635    unsigned Indirect    : 1;  /* BOOL */
 636    unsigned Dimension   : 1;  /* BOOL */
 637    int      Index       : 16; /* SINT */
 638    unsigned Padding     : 6;
 639 };
 640
 641
 642 #ifdef __cplusplus
 643 }
 644 #endif
 645
 646 #endif /* P_SHADER_TOKENS_H */