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_IMMEDIATE_ARRAY     =10,
  78    TGSI_FILE_TEMPORARY_ARRAY     =11,
  79    TGSI_FILE_RESOURCE            =12,
  80    TGSI_FILE_SAMPLER_VIEW        =13,
  81    TGSI_FILE_COUNT      /**< how many TGSI_FILE_ types */
  82 };
  83
  84
  85 #define TGSI_WRITEMASK_NONE     0x00
  86 #define TGSI_WRITEMASK_X        0x01
  87 #define TGSI_WRITEMASK_Y        0x02
  88 #define TGSI_WRITEMASK_XY       0x03
  89 #define TGSI_WRITEMASK_Z        0x04
  90 #define TGSI_WRITEMASK_XZ       0x05
  91 #define TGSI_WRITEMASK_YZ       0x06
  92 #define TGSI_WRITEMASK_XYZ      0x07
  93 #define TGSI_WRITEMASK_W        0x08
  94 #define TGSI_WRITEMASK_XW       0x09
  95 #define TGSI_WRITEMASK_YW       0x0A
  96 #define TGSI_WRITEMASK_XYW      0x0B
  97 #define TGSI_WRITEMASK_ZW       0x0C
  98 #define TGSI_WRITEMASK_XZW      0x0D
  99 #define TGSI_WRITEMASK_YZW      0x0E
 100 #define TGSI_WRITEMASK_XYZW     0x0F
 101
 102 #define TGSI_INTERPOLATE_CONSTANT      0
 103 #define TGSI_INTERPOLATE_LINEAR        1
 104 #define TGSI_INTERPOLATE_PERSPECTIVE   2
 105 #define TGSI_INTERPOLATE_COLOR         3 /* special color case for smooth/flat */
 106 #define TGSI_INTERPOLATE_COUNT         4
 107
 108 #define TGSI_CYLINDRICAL_WRAP_X (1 << 0)
 109 #define TGSI_CYLINDRICAL_WRAP_Y (1 << 1)
 110 #define TGSI_CYLINDRICAL_WRAP_Z (1 << 2)
 111 #define TGSI_CYLINDRICAL_WRAP_W (1 << 3)
 112
 113 struct tgsi_declaration
 114 {
 115    unsigned Type        : 4;  /**< TGSI_TOKEN_TYPE_DECLARATION */
 116    unsigned NrTokens    : 8;  /**< UINT */
 117    unsigned File        : 4;  /**< one of TGSI_FILE_x */
 118    unsigned UsageMask   : 4;  /**< bitmask of TGSI_WRITEMASK_x flags */
 119    unsigned Dimension   : 1;  /**< any extra dimension info? */
 120    unsigned Semantic    : 1;  /**< BOOL, any semantic info? */
 121    unsigned Interpolate : 1;  /**< any interpolation info? */
 122    unsigned Invariant   : 1;  /**< invariant optimization? */
 123    unsigned Padding     : 8;
 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_COUNT      19 /**< number of semantic values */
 166
 167 struct tgsi_declaration_semantic
 168 {
 169    unsigned Name           : 8;  /**< one of TGSI_SEMANTIC_x */
 170    unsigned Index          : 16; /**< UINT */
 171    unsigned Padding        : 8;
 172 };
 173
 174 struct tgsi_declaration_resource {
 175    unsigned Resource    : 8; /**< one of TGSI_TEXTURE_ */
 176    unsigned Raw         : 1;
 177    unsigned Writable    : 1;
 178    unsigned Padding     : 22;
 179 };
 180
 181 struct tgsi_declaration_sampler_view {
 182    unsigned Resource    : 8; /**< one of TGSI_TEXTURE_ */
 183    unsigned ReturnTypeX : 6; /**< one of enum pipe_type */
 184    unsigned ReturnTypeY : 6; /**< one of enum pipe_type */
 185    unsigned ReturnTypeZ : 6; /**< one of enum pipe_type */
 186    unsigned ReturnTypeW : 6; /**< one of enum pipe_type */
 187 };
 188
 189 /*
 190  * Special resources that don't need to be declared.  They map to the
 191  * GLOBAL/LOCAL/PRIVATE/INPUT compute memory spaces.
 192  */
 193 #define TGSI_RESOURCE_GLOBAL    0x7fff
 194 #define TGSI_RESOURCE_LOCAL     0x7ffe
 195 #define TGSI_RESOURCE_PRIVATE   0x7ffd
 196 #define TGSI_RESOURCE_INPUT     0x7ffc
 197
 198 #define TGSI_IMM_FLOAT32   0
 199 #define TGSI_IMM_UINT32    1
 200 #define TGSI_IMM_INT32     2
 201
 202 struct tgsi_immediate
 203 {
 204    unsigned Type       : 4;  /**< TGSI_TOKEN_TYPE_IMMEDIATE */
 205    unsigned NrTokens   : 14; /**< UINT */
 206    unsigned DataType   : 4;  /**< one of TGSI_IMM_x */
 207    unsigned Padding    : 10;
 208 };
 209
 210 union tgsi_immediate_data
 211 {
 212    float Float;
 213    unsigned Uint;
 214    int Int;
 215 };
 216
 217 #define TGSI_PROPERTY_GS_INPUT_PRIM          0
 218 #define TGSI_PROPERTY_GS_OUTPUT_PRIM         1
 219 #define TGSI_PROPERTY_GS_MAX_OUTPUT_VERTICES 2
 220 #define TGSI_PROPERTY_FS_COORD_ORIGIN        3
 221 #define TGSI_PROPERTY_FS_COORD_PIXEL_CENTER  4
 222 #define TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS 5
 223 #define TGSI_PROPERTY_FS_DEPTH_LAYOUT        6
 224 #define TGSI_PROPERTY_VS_PROHIBIT_UCPS       7
 225 #define TGSI_PROPERTY_COUNT                  8
 226
 227 struct tgsi_property {
 228    unsigned Type         : 4;  /**< TGSI_TOKEN_TYPE_PROPERTY */
 229    unsigned NrTokens     : 8;  /**< UINT */
 230    unsigned PropertyName : 8;  /**< one of TGSI_PROPERTY */
 231    unsigned Padding      : 12;
 232 };
 233
 234 #define TGSI_FS_COORD_ORIGIN_UPPER_LEFT 0
 235 #define TGSI_FS_COORD_ORIGIN_LOWER_LEFT 1
 236
 237 #define TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER 0
 238 #define TGSI_FS_COORD_PIXEL_CENTER_INTEGER 1
 239
 240 #define TGSI_FS_DEPTH_LAYOUT_NONE         0
 241 #define TGSI_FS_DEPTH_LAYOUT_ANY          1
 242 #define TGSI_FS_DEPTH_LAYOUT_GREATER      2
 243 #define TGSI_FS_DEPTH_LAYOUT_LESS         3
 244 #define TGSI_FS_DEPTH_LAYOUT_UNCHANGED    4
 245
 246
 247 struct tgsi_property_data {
 248    unsigned Data;
 249 };
 250
 251 /* TGSI opcodes.
 252  *
 253  * For more information on semantics of opcodes and
 254  * which APIs are known to use which opcodes, see
 255  * gallium/docs/source/tgsi.rst
 256  */
 257 #define TGSI_OPCODE_ARL                 0
 258 #define TGSI_OPCODE_MOV                 1
 259 #define TGSI_OPCODE_LIT                 2
 260 #define TGSI_OPCODE_RCP                 3
 261 #define TGSI_OPCODE_RSQ                 4
 262 #define TGSI_OPCODE_EXP                 5
 263 #define TGSI_OPCODE_LOG                 6
 264 #define TGSI_OPCODE_MUL                 7
 265 #define TGSI_OPCODE_ADD                 8
 266 #define TGSI_OPCODE_DP3                 9
 267 #define TGSI_OPCODE_DP4                 10
 268 #define TGSI_OPCODE_DST                 11
 269 #define TGSI_OPCODE_MIN                 12
 270 #define TGSI_OPCODE_MAX                 13
 271 #define TGSI_OPCODE_SLT                 14
 272 #define TGSI_OPCODE_SGE                 15
 273 #define TGSI_OPCODE_MAD                 16
 274 #define TGSI_OPCODE_SUB                 17
 275 #define TGSI_OPCODE_LRP                 18
 276 #define TGSI_OPCODE_CND                 19
 277                                 /* gap */
 278 #define TGSI_OPCODE_DP2A                21
 279                                 /* gap */
 280 #define TGSI_OPCODE_FRC                 24
 281 #define TGSI_OPCODE_CLAMP               25
 282 #define TGSI_OPCODE_FLR                 26
 283 #define TGSI_OPCODE_ROUND               27
 284 #define TGSI_OPCODE_EX2                 28
 285 #define TGSI_OPCODE_LG2                 29
 286 #define TGSI_OPCODE_POW                 30
 287 #define TGSI_OPCODE_XPD                 31
 288                                 /* gap */
 289 #define TGSI_OPCODE_ABS                 33
 290 #define TGSI_OPCODE_RCC                 34
 291 #define TGSI_OPCODE_DPH                 35
 292 #define TGSI_OPCODE_COS                 36
 293 #define TGSI_OPCODE_DDX                 37
 294 #define TGSI_OPCODE_DDY                 38
 295 #define TGSI_OPCODE_KILP                39  /* predicated kill */
 296 #define TGSI_OPCODE_PK2H                40
 297 #define TGSI_OPCODE_PK2US               41
 298 #define TGSI_OPCODE_PK4B                42
 299 #define TGSI_OPCODE_PK4UB               43
 300 #define TGSI_OPCODE_RFL                 44
 301 #define TGSI_OPCODE_SEQ                 45
 302 #define TGSI_OPCODE_SFL                 46
 303 #define TGSI_OPCODE_SGT                 47
 304 #define TGSI_OPCODE_SIN                 48
 305 #define TGSI_OPCODE_SLE                 49
 306 #define TGSI_OPCODE_SNE                 50
 307 #define TGSI_OPCODE_STR                 51
 308 #define TGSI_OPCODE_TEX                 52
 309 #define TGSI_OPCODE_TXD                 53
 310 #define TGSI_OPCODE_TXP                 54
 311 #define TGSI_OPCODE_UP2H                55
 312 #define TGSI_OPCODE_UP2US               56
 313 #define TGSI_OPCODE_UP4B                57
 314 #define TGSI_OPCODE_UP4UB               58
 315 #define TGSI_OPCODE_X2D                 59
 316 #define TGSI_OPCODE_ARA                 60
 317 #define TGSI_OPCODE_ARR                 61
 318 #define TGSI_OPCODE_BRA                 62
 319 #define TGSI_OPCODE_CAL                 63
 320 #define TGSI_OPCODE_RET                 64
 321 #define TGSI_OPCODE_SSG                 65 /* SGN */
 322 #define TGSI_OPCODE_CMP                 66
 323 #define TGSI_OPCODE_SCS                 67
 324 #define TGSI_OPCODE_TXB                 68
 325 #define TGSI_OPCODE_NRM                 69
 326 #define TGSI_OPCODE_DIV                 70
 327 #define TGSI_OPCODE_DP2                 71
 328 #define TGSI_OPCODE_TXL                 72
 329 #define TGSI_OPCODE_BRK                 73
 330 #define TGSI_OPCODE_IF                  74
 331                                 /* gap */
 332 #define TGSI_OPCODE_ELSE                77
 333 #define TGSI_OPCODE_ENDIF               78
 334                                 /* gap */
 335 #define TGSI_OPCODE_PUSHA               81
 336 #define TGSI_OPCODE_POPA                82
 337 #define TGSI_OPCODE_CEIL                83
 338 #define TGSI_OPCODE_I2F                 84
 339 #define TGSI_OPCODE_NOT                 85
 340 #define TGSI_OPCODE_TRUNC               86
 341 #define TGSI_OPCODE_SHL                 87
 342                                 /* gap */
 343 #define TGSI_OPCODE_AND                 89
 344 #define TGSI_OPCODE_OR                  90
 345 #define TGSI_OPCODE_MOD                 91
 346 #define TGSI_OPCODE_XOR                 92
 347 #define TGSI_OPCODE_SAD                 93
 348 #define TGSI_OPCODE_TXF                 94
 349 #define TGSI_OPCODE_TXQ                 95
 350 #define TGSI_OPCODE_CONT                96
 351 #define TGSI_OPCODE_EMIT                97
 352 #define TGSI_OPCODE_ENDPRIM             98
 353 #define TGSI_OPCODE_BGNLOOP             99
 354 #define TGSI_OPCODE_BGNSUB              100
 355 #define TGSI_OPCODE_ENDLOOP             101
 356 #define TGSI_OPCODE_ENDSUB              102
 357                                 /* gap */
 358 #define TGSI_OPCODE_NOP                 107
 359                                 /* gap */
 360 #define TGSI_OPCODE_NRM4                112
 361 #define TGSI_OPCODE_CALLNZ              113
 362 #define TGSI_OPCODE_IFC                 114
 363 #define TGSI_OPCODE_BREAKC              115
 364 #define TGSI_OPCODE_KIL                 116  /* conditional kill */
 365 #define TGSI_OPCODE_END                 117  /* aka HALT */
 366                                 /* gap */
 367 #define TGSI_OPCODE_F2I                 119
 368 #define TGSI_OPCODE_IDIV                120
 369 #define TGSI_OPCODE_IMAX                121
 370 #define TGSI_OPCODE_IMIN                122
 371 #define TGSI_OPCODE_INEG                123
 372 #define TGSI_OPCODE_ISGE                124
 373 #define TGSI_OPCODE_ISHR                125
 374 #define TGSI_OPCODE_ISLT                126
 375 #define TGSI_OPCODE_F2U                 127
 376 #define TGSI_OPCODE_U2F                 128
 377 #define TGSI_OPCODE_UADD                129
 378 #define TGSI_OPCODE_UDIV                130
 379 #define TGSI_OPCODE_UMAD                131
 380 #define TGSI_OPCODE_UMAX                132
 381 #define TGSI_OPCODE_UMIN                133
 382 #define TGSI_OPCODE_UMOD                134
 383 #define TGSI_OPCODE_UMUL                135
 384 #define TGSI_OPCODE_USEQ                136
 385 #define TGSI_OPCODE_USGE                137
 386 #define TGSI_OPCODE_USHR                138
 387 #define TGSI_OPCODE_USLT                139
 388 #define TGSI_OPCODE_USNE                140
 389 #define TGSI_OPCODE_SWITCH              141
 390 #define TGSI_OPCODE_CASE                142
 391 #define TGSI_OPCODE_DEFAULT             143
 392 #define TGSI_OPCODE_ENDSWITCH           144
 393
 394 /* resource related opcodes */
 395 #define TGSI_OPCODE_SAMPLE              145
 396 #define TGSI_OPCODE_SAMPLE_I            146
 397 #define TGSI_OPCODE_SAMPLE_I_MS         147
 398 #define TGSI_OPCODE_SAMPLE_B            148
 399 #define TGSI_OPCODE_SAMPLE_C            149
 400 #define TGSI_OPCODE_SAMPLE_C_LZ         150
 401 #define TGSI_OPCODE_SAMPLE_D            151
 402 #define TGSI_OPCODE_SAMPLE_L            152
 403 #define TGSI_OPCODE_GATHER4             153
 404 #define TGSI_OPCODE_SVIEWINFO           154
 405 #define TGSI_OPCODE_SAMPLE_POS          155
 406 #define TGSI_OPCODE_SAMPLE_INFO         156
 407
 408 #define TGSI_OPCODE_UARL                157
 409 #define TGSI_OPCODE_UCMP                158
 410 #define TGSI_OPCODE_IABS                159
 411 #define TGSI_OPCODE_ISSG                160
 412
 413 #define TGSI_OPCODE_LOAD                161
 414 #define TGSI_OPCODE_STORE               162
 415
 416 #define TGSI_OPCODE_MFENCE              163
 417 #define TGSI_OPCODE_LFENCE              164
 418 #define TGSI_OPCODE_SFENCE              165
 419 #define TGSI_OPCODE_BARRIER             166
 420
 421 #define TGSI_OPCODE_ATOMUADD            167
 422 #define TGSI_OPCODE_ATOMXCHG            168
 423 #define TGSI_OPCODE_ATOMCAS             169
 424 #define TGSI_OPCODE_ATOMAND             170
 425 #define TGSI_OPCODE_ATOMOR              171
 426 #define TGSI_OPCODE_ATOMXOR             172
 427 #define TGSI_OPCODE_ATOMUMIN            173
 428 #define TGSI_OPCODE_ATOMUMAX            174
 429 #define TGSI_OPCODE_ATOMIMIN            175
 430 #define TGSI_OPCODE_ATOMIMAX            176
 431
 432 #define TGSI_OPCODE_LAST                177
 433
 434 #define TGSI_SAT_NONE            0  /* do not saturate */
 435 #define TGSI_SAT_ZERO_ONE        1  /* clamp to [0,1] */
 436 #define TGSI_SAT_MINUS_PLUS_ONE  2  /* clamp to [-1,1] */
 437
 438 /**
 439  * Opcode is the operation code to execute. A given operation defines the
 440  * semantics how the source registers (if any) are interpreted and what is
 441  * written to the destination registers (if any) as a result of execution.
 442  *
 443  * NumDstRegs and NumSrcRegs is the number of destination and source registers,
 444  * respectively. For a given operation code, those numbers are fixed and are
 445  * present here only for convenience.
 446  *
 447  * If Predicate is TRUE, tgsi_instruction_predicate token immediately follows.
 448  *
 449  * Saturate controls how are final results in destination registers modified.
 450  */
 451
 452 struct tgsi_instruction
 453 {
 454    unsigned Type       : 4;  /* TGSI_TOKEN_TYPE_INSTRUCTION */
 455    unsigned NrTokens   : 8;  /* UINT */
 456    unsigned Opcode     : 8;  /* TGSI_OPCODE_ */
 457    unsigned Saturate   : 2;  /* TGSI_SAT_ */
 458    unsigned NumDstRegs : 2;  /* UINT */
 459    unsigned NumSrcRegs : 4;  /* UINT */
 460    unsigned Predicate  : 1;  /* BOOL */
 461    unsigned Label      : 1;
 462    unsigned Texture    : 1;
 463    unsigned Padding    : 1;
 464 };
 465
 466 /*
 467  * If tgsi_instruction::Label is TRUE, tgsi_instruction_label follows.
 468  *
 469  * If tgsi_instruction::Texture is TRUE, tgsi_instruction_texture follows.
 470  *   if texture instruction has a number of offsets,
 471  *   then tgsi_instruction::Texture::NumOffset of tgsi_texture_offset follow.
 472  *
 473  * Then, tgsi_instruction::NumDstRegs of tgsi_dst_register follow.
 474  *
 475  * Then, tgsi_instruction::NumSrcRegs of tgsi_src_register follow.
 476  *
 477  * tgsi_instruction::NrTokens contains the total number of words that make the
 478  * instruction, including the instruction word.
 479  */
 480
 481 #define TGSI_SWIZZLE_X      0
 482 #define TGSI_SWIZZLE_Y      1
 483 #define TGSI_SWIZZLE_Z      2
 484 #define TGSI_SWIZZLE_W      3
 485
 486 struct tgsi_instruction_label
 487 {
 488    unsigned Label    : 24;   /* UINT */
 489    unsigned Padding  : 8;
 490 };
 491
 492 #define TGSI_BUFFER                 0
 493 #define TGSI_TEXTURE_1D             1
 494 #define TGSI_TEXTURE_2D             2
 495 #define TGSI_TEXTURE_3D             3
 496 #define TGSI_TEXTURE_CUBE           4
 497 #define TGSI_TEXTURE_RECT           5
 498 #define TGSI_TEXTURE_SHADOW1D       6
 499 #define TGSI_TEXTURE_SHADOW2D       7
 500 #define TGSI_TEXTURE_SHADOWRECT     8
 501 #define TGSI_TEXTURE_1D_ARRAY       9
 502 #define TGSI_TEXTURE_2D_ARRAY       10
 503 #define TGSI_TEXTURE_SHADOW1D_ARRAY 11
 504 #define TGSI_TEXTURE_SHADOW2D_ARRAY 12
 505 #define TGSI_TEXTURE_SHADOWCUBE     13
 506 #define TGSI_TEXTURE_COUNT          14
 507
 508 struct tgsi_instruction_texture
 509 {
 510    unsigned Texture  : 8;    /* TGSI_TEXTURE_ */
 511    unsigned NumOffsets : 4;
 512    unsigned Padding : 20;
 513 };
 514
 515 /* for texture offsets in GLSL and DirectX.
 516  * Generally these always come from TGSI_FILE_IMMEDIATE,
 517  * however DX11 appears to have the capability to do
 518  * non-constant texture offsets.
 519  */
 520 struct tgsi_texture_offset
 521 {
 522    int      Index    : 16;
 523    unsigned File     : 4;  /**< one of TGSI_FILE_x */
 524    unsigned SwizzleX : 2;  /* TGSI_SWIZZLE_x */
 525    unsigned SwizzleY : 2;  /* TGSI_SWIZZLE_x */
 526    unsigned SwizzleZ : 2;  /* TGSI_SWIZZLE_x */
 527    unsigned Padding  : 6;
 528 };
 529
 530 /*
 531  * For SM3, the following constraint applies.
 532  *   - Swizzle is either set to identity or replicate.
 533  */
 534 struct tgsi_instruction_predicate
 535 {
 536    int      Index    : 16; /* SINT */
 537    unsigned SwizzleX : 2;  /* TGSI_SWIZZLE_x */
 538    unsigned SwizzleY : 2;  /* TGSI_SWIZZLE_x */
 539    unsigned SwizzleZ : 2;  /* TGSI_SWIZZLE_x */
 540    unsigned SwizzleW : 2;  /* TGSI_SWIZZLE_x */
 541    unsigned Negate   : 1;  /* BOOL */
 542    unsigned Padding  : 7;
 543 };
 544
 545 /**
 546  * File specifies the register array to access.
 547  *
 548  * Index specifies the element number of a register in the register file.
 549  *
 550  * If Indirect is TRUE, Index should be offset by the X component of a source
 551  * register that follows. The register can be now fetched into local storage
 552  * for further processing.
 553  *
 554  * If Negate is TRUE, all components of the fetched register are negated.
 555  *
 556  * The fetched register components are swizzled according to SwizzleX, SwizzleY,
 557  * SwizzleZ and SwizzleW.
 558  *
 559  */
 560
 561 struct tgsi_src_register
 562 {
 563    unsigned File        : 4;  /* TGSI_FILE_ */
 564    unsigned Indirect    : 1;  /* BOOL */
 565    unsigned Dimension   : 1;  /* BOOL */
 566    int      Index       : 16; /* SINT */
 567    unsigned SwizzleX    : 2;  /* TGSI_SWIZZLE_ */
 568    unsigned SwizzleY    : 2;  /* TGSI_SWIZZLE_ */
 569    unsigned SwizzleZ    : 2;  /* TGSI_SWIZZLE_ */
 570    unsigned SwizzleW    : 2;  /* TGSI_SWIZZLE_ */
 571    unsigned Absolute    : 1;    /* BOOL */
 572    unsigned Negate      : 1;    /* BOOL */
 573 };
 574
 575 /**
 576  * If tgsi_src_register::Modifier is TRUE, tgsi_src_register_modifier follows.
 577  *
 578  * Then, if tgsi_src_register::Indirect is TRUE, another tgsi_src_register
 579  * follows.
 580  *
 581  * Then, if tgsi_src_register::Dimension is TRUE, tgsi_dimension follows.
 582  */
 583
 584
 585 struct tgsi_dimension
 586 {
 587    unsigned Indirect    : 1;  /* BOOL */
 588    unsigned Dimension   : 1;  /* BOOL */
 589    unsigned Padding     : 14;
 590    int      Index       : 16; /* SINT */
 591 };
 592
 593 struct tgsi_dst_register
 594 {
 595    unsigned File        : 4;  /* TGSI_FILE_ */
 596    unsigned WriteMask   : 4;  /* TGSI_WRITEMASK_ */
 597    unsigned Indirect    : 1;  /* BOOL */
 598    unsigned Dimension   : 1;  /* BOOL */
 599    int      Index       : 16; /* SINT */
 600    unsigned Padding     : 6;
 601 };
 602
 603
 604 #ifdef __cplusplus
 605 }
 606 #endif
 607
 608 #endif /* P_SHADER_TOKENS_H */