src/gallium/include/pipe/p_shader_tokens.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * 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, sub license, 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 portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef TGSI_TOKEN_H
  29 #define TGSI_TOKEN_H
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 #include "p_compiler.h"
  36
  37 struct tgsi_version
  38 {
  39    unsigned MajorVersion  : 8;
  40    unsigned MinorVersion  : 8;
  41    unsigned Padding       : 16;
  42 };
  43
  44 struct tgsi_header
  45 {
  46    unsigned HeaderSize : 8;
  47    unsigned BodySize   : 24;
  48 };
  49
  50 #define TGSI_PROCESSOR_FRAGMENT  0
  51 #define TGSI_PROCESSOR_VERTEX    1
  52 #define TGSI_PROCESSOR_GEOMETRY  2
  53
  54 struct tgsi_processor
  55 {
  56    unsigned Processor  : 4;  /* TGSI_PROCESSOR_ */
  57    unsigned Padding    : 28;
  58 };
  59
  60 #define TGSI_TOKEN_TYPE_DECLARATION    0
  61 #define TGSI_TOKEN_TYPE_IMMEDIATE      1
  62 #define TGSI_TOKEN_TYPE_INSTRUCTION    2
  63
  64 struct tgsi_token
  65 {
  66    unsigned Type       : 4;  /**< TGSI_TOKEN_TYPE_x */
  67    unsigned NrTokens   : 8;  /**< UINT */
  68    unsigned Padding    : 19;
  69    unsigned Extended   : 1;  /**< BOOL */
  70 };
  71
  72 enum tgsi_file_type {
  73    TGSI_FILE_NULL        =0,
  74    TGSI_FILE_CONSTANT    =1,
  75    TGSI_FILE_INPUT       =2,
  76    TGSI_FILE_OUTPUT      =3,
  77    TGSI_FILE_TEMPORARY   =4,
  78    TGSI_FILE_SAMPLER     =5,
  79    TGSI_FILE_ADDRESS     =6,
  80    TGSI_FILE_IMMEDIATE   =7,
  81    TGSI_FILE_LOOP        =8,
  82    TGSI_FILE_COUNT      /**< how many TGSI_FILE_ types */
  83 };
  84
  85
  86 #define TGSI_WRITEMASK_NONE     0x00
  87 #define TGSI_WRITEMASK_X        0x01
  88 #define TGSI_WRITEMASK_Y        0x02
  89 #define TGSI_WRITEMASK_XY       0x03
  90 #define TGSI_WRITEMASK_Z        0x04
  91 #define TGSI_WRITEMASK_XZ       0x05
  92 #define TGSI_WRITEMASK_YZ       0x06
  93 #define TGSI_WRITEMASK_XYZ      0x07
  94 #define TGSI_WRITEMASK_W        0x08
  95 #define TGSI_WRITEMASK_XW       0x09
  96 #define TGSI_WRITEMASK_YW       0x0A
  97 #define TGSI_WRITEMASK_XYW      0x0B
  98 #define TGSI_WRITEMASK_ZW       0x0C
  99 #define TGSI_WRITEMASK_XZW      0x0D
 100 #define TGSI_WRITEMASK_YZW      0x0E
 101 #define TGSI_WRITEMASK_XYZW     0x0F
 102
 103 #define TGSI_INTERPOLATE_CONSTANT      0
 104 #define TGSI_INTERPOLATE_LINEAR        1
 105 #define TGSI_INTERPOLATE_PERSPECTIVE   2
 106 #define TGSI_INTERPOLATE_COUNT         3
 107
 108 struct tgsi_declaration
 109 {
 110    unsigned Type        : 4;  /**< TGSI_TOKEN_TYPE_DECLARATION */
 111    unsigned NrTokens    : 8;  /**< UINT */
 112    unsigned File        : 4;  /**< one of TGSI_FILE_x */
 113    unsigned UsageMask   : 4;  /**< bitmask of TGSI_WRITEMASK_x flags */
 114    unsigned Interpolate : 4;  /**< one of TGSI_INTERPOLATE_x */
 115    unsigned Semantic    : 1;  /**< BOOL, any semantic info? */
 116    unsigned Centroid    : 1;  /**< centroid sampling? */
 117    unsigned Invariant   : 1;  /**< invariant optimization? */
 118    unsigned Padding     : 4;
 119    unsigned Extended    : 1;  /**< BOOL */
 120 };
 121
 122 struct tgsi_declaration_range
 123 {
 124    unsigned First   : 16; /**< UINT */
 125    unsigned Last    : 16; /**< UINT */
 126 };
 127
 128 #define TGSI_SEMANTIC_POSITION 0
 129 #define TGSI_SEMANTIC_COLOR    1
 130 #define TGSI_SEMANTIC_BCOLOR   2 /**< back-face color */
 131 #define TGSI_SEMANTIC_FOG      3
 132 #define TGSI_SEMANTIC_PSIZE    4
 133 #define TGSI_SEMANTIC_GENERIC  5
 134 #define TGSI_SEMANTIC_NORMAL   6
 135 #define TGSI_SEMANTIC_FACE     7
 136 #define TGSI_SEMANTIC_COUNT    8 /**< number of semantic values */
 137
 138 struct tgsi_declaration_semantic
 139 {
 140    unsigned SemanticName   : 8;  /**< one of TGSI_SEMANTIC_x */
 141    unsigned SemanticIndex  : 16; /**< UINT */
 142    unsigned Padding        : 8;
 143 };
 144
 145 #define TGSI_IMM_FLOAT32   0
 146
 147 struct tgsi_immediate
 148 {
 149    unsigned Type       : 4;  /**< TGSI_TOKEN_TYPE_IMMEDIATE */
 150    unsigned NrTokens   : 8;  /**< UINT */
 151    unsigned DataType   : 4;  /**< one of TGSI_IMM_x */
 152    unsigned Padding    : 15;
 153    unsigned Extended   : 1;  /**< BOOL */
 154 };
 155
 156 union tgsi_immediate_data
 157 {
 158    float Float;
 159 };
 160
 161 /* TGSI opcodes.
 162  *
 163  * For more information on semantics of opcodes and
 164  * which APIs are known to use which opcodes, see
 165  * auxiliary/tgsi/tgsi-instruction-set.txt
 166  */
 167 #define TGSI_OPCODE_ARL                 0
 168 #define TGSI_OPCODE_MOV                 1
 169 #define TGSI_OPCODE_LIT                 2
 170 #define TGSI_OPCODE_RCP                 3
 171 #define TGSI_OPCODE_RSQ                 4
 172 #define TGSI_OPCODE_EXP                 5
 173 #define TGSI_OPCODE_LOG                 6
 174 #define TGSI_OPCODE_MUL                 7
 175 #define TGSI_OPCODE_ADD                 8
 176 #define TGSI_OPCODE_DP3                 9
 177 #define TGSI_OPCODE_DP4                 10
 178 #define TGSI_OPCODE_DST                 11
 179 #define TGSI_OPCODE_MIN                 12
 180 #define TGSI_OPCODE_MAX                 13
 181 #define TGSI_OPCODE_SLT                 14
 182 #define TGSI_OPCODE_SGE                 15
 183 #define TGSI_OPCODE_MAD                 16
 184 #define TGSI_OPCODE_SUB                 17
 185 #define TGSI_OPCODE_LRP                 18
 186 #define TGSI_OPCODE_CND                 19
 187                                 /* gap */
 188 #define TGSI_OPCODE_DP2A                21
 189                                 /* gap */
 190 #define TGSI_OPCODE_FRC                 24
 191 #define TGSI_OPCODE_CLAMP               25
 192 #define TGSI_OPCODE_FLR                 26
 193 #define TGSI_OPCODE_ROUND               27
 194 #define TGSI_OPCODE_EX2                 28
 195 #define TGSI_OPCODE_LG2                 29
 196 #define TGSI_OPCODE_POW                 30
 197 #define TGSI_OPCODE_XPD                 31
 198                                 /* gap */
 199 #define TGSI_OPCODE_ABS                 33
 200 #define TGSI_OPCODE_RCC                 34
 201 #define TGSI_OPCODE_DPH                 35
 202 #define TGSI_OPCODE_COS                 36
 203 #define TGSI_OPCODE_DDX                 37
 204 #define TGSI_OPCODE_DDY                 38
 205 #define TGSI_OPCODE_KILP                39  /* predicated kill */
 206 #define TGSI_OPCODE_PK2H                40
 207 #define TGSI_OPCODE_PK2US               41
 208 #define TGSI_OPCODE_PK4B                42
 209 #define TGSI_OPCODE_PK4UB               43
 210 #define TGSI_OPCODE_RFL                 44
 211 #define TGSI_OPCODE_SEQ                 45
 212 #define TGSI_OPCODE_SFL                 46
 213 #define TGSI_OPCODE_SGT                 47
 214 #define TGSI_OPCODE_SIN                 48
 215 #define TGSI_OPCODE_SLE                 49
 216 #define TGSI_OPCODE_SNE                 50
 217 #define TGSI_OPCODE_STR                 51
 218 #define TGSI_OPCODE_TEX                 52
 219 #define TGSI_OPCODE_TXD                 53
 220 #define TGSI_OPCODE_TXP                 54
 221 #define TGSI_OPCODE_UP2H                55
 222 #define TGSI_OPCODE_UP2US               56
 223 #define TGSI_OPCODE_UP4B                57
 224 #define TGSI_OPCODE_UP4UB               58
 225 #define TGSI_OPCODE_X2D                 59
 226 #define TGSI_OPCODE_ARA                 60
 227 #define TGSI_OPCODE_ARR                 61
 228 #define TGSI_OPCODE_BRA                 62
 229 #define TGSI_OPCODE_CAL                 63
 230 #define TGSI_OPCODE_RET                 64
 231 #define TGSI_OPCODE_SSG                 65 /* SGN */
 232 #define TGSI_OPCODE_CMP                 66
 233 #define TGSI_OPCODE_SCS                 67
 234 #define TGSI_OPCODE_TXB                 68
 235 #define TGSI_OPCODE_NRM                 69
 236 #define TGSI_OPCODE_DIV                 70
 237 #define TGSI_OPCODE_DP2                 71
 238 #define TGSI_OPCODE_TXL                 72
 239 #define TGSI_OPCODE_BRK                 73
 240 #define TGSI_OPCODE_IF                  74
 241 #define TGSI_OPCODE_BGNFOR              75
 242 #define TGSI_OPCODE_REP                 76
 243 #define TGSI_OPCODE_ELSE                77
 244 #define TGSI_OPCODE_ENDIF               78
 245 #define TGSI_OPCODE_ENDFOR              79
 246 #define TGSI_OPCODE_ENDREP              80
 247 #define TGSI_OPCODE_PUSHA               81
 248 #define TGSI_OPCODE_POPA                82
 249 #define TGSI_OPCODE_CEIL                83
 250 #define TGSI_OPCODE_I2F                 84
 251 #define TGSI_OPCODE_NOT                 85
 252 #define TGSI_OPCODE_TRUNC               86
 253 #define TGSI_OPCODE_SHL                 87
 254 #define TGSI_OPCODE_SHR                 88
 255 #define TGSI_OPCODE_AND                 89
 256 #define TGSI_OPCODE_OR                  90
 257 #define TGSI_OPCODE_MOD                 91
 258 #define TGSI_OPCODE_XOR                 92
 259 #define TGSI_OPCODE_SAD                 93
 260 #define TGSI_OPCODE_TXF                 94
 261 #define TGSI_OPCODE_TXQ                 95
 262 #define TGSI_OPCODE_CONT                96
 263 #define TGSI_OPCODE_EMIT                97
 264 #define TGSI_OPCODE_ENDPRIM             98
 265 #define TGSI_OPCODE_BGNLOOP             99
 266 #define TGSI_OPCODE_BGNSUB              100
 267 #define TGSI_OPCODE_ENDLOOP             101
 268 #define TGSI_OPCODE_ENDSUB              102
 269 #define TGSI_OPCODE_NOISE1              103
 270 #define TGSI_OPCODE_NOISE2              104
 271 #define TGSI_OPCODE_NOISE3              105
 272 #define TGSI_OPCODE_NOISE4              106
 273 #define TGSI_OPCODE_NOP                 107
 274                                 /* gap */
 275 #define TGSI_OPCODE_NRM4                112
 276 #define TGSI_OPCODE_CALLNZ              113
 277 #define TGSI_OPCODE_IFC                 114
 278 #define TGSI_OPCODE_BREAKC              115
 279 #define TGSI_OPCODE_KIL                 116  /* conditional kill */
 280 #define TGSI_OPCODE_END                 117  /* aka HALT */
 281 #define TGSI_OPCODE_SWZ                 118
 282 #define TGSI_OPCODE_LAST                119
 283
 284 #define TGSI_SAT_NONE            0  /* do not saturate */
 285 #define TGSI_SAT_ZERO_ONE        1  /* clamp to [0,1] */
 286 #define TGSI_SAT_MINUS_PLUS_ONE  2  /* clamp to [-1,1] */
 287
 288 /**
 289  * Opcode is the operation code to execute. A given operation defines the
 290  * semantics how the source registers (if any) are interpreted and what is
 291  * written to the destination registers (if any) as a result of execution.
 292  *
 293  * NumDstRegs and NumSrcRegs is the number of destination and source registers,
 294  * respectively. For a given operation code, those numbers are fixed and are
 295  * present here only for convenience.
 296  *
 297  * If Extended is TRUE, it is now executed.
 298  *
 299  * Saturate controls how are final results in destination registers modified.
 300  */
 301
 302 struct tgsi_instruction
 303 {
 304    unsigned Type       : 4;  /* TGSI_TOKEN_TYPE_INSTRUCTION */
 305    unsigned NrTokens   : 8;  /* UINT */
 306    unsigned Opcode     : 8;  /* TGSI_OPCODE_ */
 307    unsigned Saturate   : 2;  /* TGSI_SAT_ */
 308    unsigned NumDstRegs : 2;  /* UINT */
 309    unsigned NumSrcRegs : 4;  /* UINT */
 310    unsigned Padding    : 3;
 311    unsigned Extended   : 1;  /* BOOL */
 312 };
 313
 314 /*
 315  * If tgsi_instruction::Extended is TRUE, tgsi_instruction_ext follows.
 316  *
 317  * Then, tgsi_instruction::NumDstRegs of tgsi_dst_register follow.
 318  *
 319  * Then, tgsi_instruction::NumSrcRegs of tgsi_src_register follow.
 320  *
 321  * tgsi_instruction::NrTokens contains the total number of words that make the
 322  * instruction, including the instruction word.
 323  */
 324
 325 #define TGSI_INSTRUCTION_EXT_TYPE_NV        0
 326 #define TGSI_INSTRUCTION_EXT_TYPE_LABEL     1
 327 #define TGSI_INSTRUCTION_EXT_TYPE_TEXTURE   2
 328 #define TGSI_INSTRUCTION_EXT_TYPE_PREDICATE 3
 329
 330 struct tgsi_instruction_ext
 331 {
 332    unsigned Type       : 4;  /* TGSI_INSTRUCTION_EXT_TYPE_ */
 333    unsigned Padding    : 27;
 334    unsigned Extended   : 1;  /* BOOL */
 335 };
 336
 337 /*
 338  * If tgsi_instruction_ext::Type is TGSI_INSTRUCTION_EXT_TYPE_NV, it should
 339  * be cast to tgsi_instruction_ext_nv.
 340  *
 341  * If tgsi_instruction_ext::Type is TGSI_INSTRUCTION_EXT_TYPE_LABEL, it
 342  * should be cast to tgsi_instruction_ext_label.
 343  *
 344  * If tgsi_instruction_ext::Type is TGSI_INSTRUCTION_EXT_TYPE_TEXTURE, it
 345  * should be cast to tgsi_instruction_ext_texture.
 346  *
 347  * If tgsi_instruction_ext::Type is TGSI_INSTRUCTION_EXT_TYPE_PREDICATE, it
 348  * should be cast to tgsi_instruction_ext_predicate.
 349  *
 350  * If tgsi_instruction_ext::Extended is TRUE, another tgsi_instruction_ext
 351  * follows.
 352  */
 353
 354 #define TGSI_PRECISION_DEFAULT      0
 355 #define TGSI_PRECISION_FLOAT32      1
 356 #define TGSI_PRECISION_FLOAT16      2
 357 #define TGSI_PRECISION_FIXED12      3
 358
 359 #define TGSI_CC_GT      0
 360 #define TGSI_CC_EQ      1
 361 #define TGSI_CC_LT      2
 362 #define TGSI_CC_GE      3
 363 #define TGSI_CC_LE      4
 364 #define TGSI_CC_NE      5
 365 #define TGSI_CC_TR      6
 366 #define TGSI_CC_FL      7
 367
 368 #define TGSI_SWIZZLE_X      0
 369 #define TGSI_SWIZZLE_Y      1
 370 #define TGSI_SWIZZLE_Z      2
 371 #define TGSI_SWIZZLE_W      3
 372
 373 /**
 374  * Precision controls the precision at which the operation should be executed.
 375  *
 376  * CondDstUpdate enables condition code register writes. When this field is
 377  * TRUE, CondDstIndex specifies the index of the condition code register to
 378  * update.
 379  *
 380  * CondFlowEnable enables conditional execution of the operation. When this
 381  * field is TRUE, CondFlowIndex specifies the index of the condition code
 382  * register to test against CondMask with component swizzle controled by
 383  * CondSwizzleX, CondSwizzleY, CondSwizzleZ and CondSwizzleW. If the test fails,
 384  * the operation is not executed.
 385  */
 386
 387 struct tgsi_instruction_ext_nv
 388 {
 389    unsigned Type             : 4;    /* TGSI_INSTRUCTION_EXT_TYPE_NV */
 390    unsigned Precision        : 4;    /* TGSI_PRECISION_ */
 391    unsigned CondDstIndex     : 4;    /* UINT */
 392    unsigned CondFlowIndex    : 4;    /* UINT */
 393    unsigned CondMask         : 4;    /* TGSI_CC_ */
 394    unsigned CondSwizzleX     : 2;    /* TGSI_SWIZZLE_ */
 395    unsigned CondSwizzleY     : 2;    /* TGSI_SWIZZLE_ */
 396    unsigned CondSwizzleZ     : 2;    /* TGSI_SWIZZLE_ */
 397    unsigned CondSwizzleW     : 2;    /* TGSI_SWIZZLE_ */
 398    unsigned CondDstUpdate    : 1;    /* BOOL */
 399    unsigned CondFlowEnable   : 1;    /* BOOL */
 400    unsigned Padding          : 1;
 401    unsigned Extended         : 1;    /* BOOL */
 402 };
 403
 404 struct tgsi_instruction_ext_label
 405 {
 406    unsigned Type     : 4;    /* TGSI_INSTRUCTION_EXT_TYPE_LABEL */
 407    unsigned Label    : 24;   /* UINT */
 408    unsigned Padding  : 3;
 409    unsigned Extended : 1;    /* BOOL */
 410 };
 411
 412 #define TGSI_TEXTURE_UNKNOWN        0
 413 #define TGSI_TEXTURE_1D             1
 414 #define TGSI_TEXTURE_2D             2
 415 #define TGSI_TEXTURE_3D             3
 416 #define TGSI_TEXTURE_CUBE           4
 417 #define TGSI_TEXTURE_RECT           5
 418 #define TGSI_TEXTURE_SHADOW1D       6
 419 #define TGSI_TEXTURE_SHADOW2D       7
 420 #define TGSI_TEXTURE_SHADOWRECT     8
 421 #define TGSI_TEXTURE_COUNT          9
 422
 423 struct tgsi_instruction_ext_texture
 424 {
 425    unsigned Type     : 4;    /* TGSI_INSTRUCTION_EXT_TYPE_TEXTURE */
 426    unsigned Texture  : 8;    /* TGSI_TEXTURE_ */
 427    unsigned Padding  : 19;
 428    unsigned Extended : 1;    /* BOOL */
 429 };
 430
 431 struct tgsi_instruction_ext_predicate
 432 {
 433    unsigned Type             : 4;    /* TGSI_INSTRUCTION_EXT_TYPE_PREDICATE */
 434    unsigned PredDstIndex     : 4;    /* UINT */
 435    unsigned PredWriteMask    : 4;    /* TGSI_WRITEMASK_ */
 436    unsigned Padding          : 19;
 437    unsigned Extended         : 1;    /* BOOL */
 438 };
 439
 440 /**
 441  * File specifies the register array to access.
 442  *
 443  * Index specifies the element number of a register in the register file.
 444  *
 445  * If Indirect is TRUE, Index should be offset by the X component of a source
 446  * register that follows. The register can be now fetched into local storage
 447  * for further processing.
 448  *
 449  * If Negate is TRUE, all components of the fetched register are negated.
 450  *
 451  * The fetched register components are swizzled according to SwizzleX, SwizzleY,
 452  * SwizzleZ and SwizzleW.
 453  *
 454  * If Extended is TRUE, any further modifications to the source register are
 455  * made to this temporary storage.
 456  */
 457
 458 struct tgsi_src_register
 459 {
 460    unsigned File        : 4;  /* TGSI_FILE_ */
 461    unsigned SwizzleX    : 2;  /* TGSI_SWIZZLE_ */
 462    unsigned SwizzleY    : 2;  /* TGSI_SWIZZLE_ */
 463    unsigned SwizzleZ    : 2;  /* TGSI_SWIZZLE_ */
 464    unsigned SwizzleW    : 2;  /* TGSI_SWIZZLE_ */
 465    unsigned Negate      : 1;  /* BOOL */
 466    unsigned Indirect    : 1;  /* BOOL */
 467    unsigned Dimension   : 1;  /* BOOL */
 468    int      Index       : 16; /* SINT */
 469    unsigned Extended    : 1;  /* BOOL */
 470 };
 471
 472 /**
 473  * If tgsi_src_register::Extended is TRUE, tgsi_src_register_ext follows.
 474  *
 475  * Then, if tgsi_src_register::Indirect is TRUE, another tgsi_src_register
 476  * follows.
 477  *
 478  * Then, if tgsi_src_register::Dimension is TRUE, tgsi_dimension follows.
 479  */
 480
 481 #define TGSI_SRC_REGISTER_EXT_TYPE_SWZ      0
 482 #define TGSI_SRC_REGISTER_EXT_TYPE_MOD      1
 483
 484 struct tgsi_src_register_ext
 485 {
 486    unsigned Type     : 4;    /* TGSI_SRC_REGISTER_EXT_TYPE_ */
 487    unsigned Padding  : 27;
 488    unsigned Extended : 1;    /* BOOL */
 489 };
 490
 491 /**
 492  * If tgsi_src_register_ext::Type is TGSI_SRC_REGISTER_EXT_TYPE_SWZ,
 493  * it should be cast to tgsi_src_register_ext_swz.
 494  *
 495  * If tgsi_src_register_ext::Type is TGSI_SRC_REGISTER_EXT_TYPE_MOD,
 496  * it should be cast to tgsi_src_register_ext_mod.
 497  *
 498  * If tgsi_dst_register_ext::Extended is TRUE, another tgsi_dst_register_ext
 499  * follows.
 500  */
 501
 502 #define TGSI_EXTSWIZZLE_X       TGSI_SWIZZLE_X
 503 #define TGSI_EXTSWIZZLE_Y       TGSI_SWIZZLE_Y
 504 #define TGSI_EXTSWIZZLE_Z       TGSI_SWIZZLE_Z
 505 #define TGSI_EXTSWIZZLE_W       TGSI_SWIZZLE_W
 506 #define TGSI_EXTSWIZZLE_ZERO    4
 507 #define TGSI_EXTSWIZZLE_ONE     5
 508
 509 /**
 510  * ExtSwizzleX, ExtSwizzleY, ExtSwizzleZ and ExtSwizzleW swizzle the source
 511  * register in an extended manner.
 512  *
 513  * NegateX, NegateY, NegateZ and NegateW negate individual components of the
 514  * source register.
 515  *
 516  * NOTE: To simplify matter, if this token is present, the corresponding Swizzle
 517  *       and Negate fields in tgsi_src_register should be set to X,Y,Z,W
 518  *       and FALSE, respectively.
 519  */
 520
 521 struct tgsi_src_register_ext_swz
 522 {
 523    unsigned Type         : 4;    /* TGSI_SRC_REGISTER_EXT_TYPE_SWZ */
 524    unsigned ExtSwizzleX  : 4;    /* TGSI_EXTSWIZZLE_ */
 525    unsigned ExtSwizzleY  : 4;    /* TGSI_EXTSWIZZLE_ */
 526    unsigned ExtSwizzleZ  : 4;    /* TGSI_EXTSWIZZLE_ */
 527    unsigned ExtSwizzleW  : 4;    /* TGSI_EXTSWIZZLE_ */
 528    unsigned NegateX      : 1;    /* BOOL */
 529    unsigned NegateY      : 1;    /* BOOL */
 530    unsigned NegateZ      : 1;    /* BOOL */
 531    unsigned NegateW      : 1;    /* BOOL */
 532    unsigned Padding      : 7;
 533    unsigned Extended     : 1;    /* BOOL */
 534 };
 535
 536 /**
 537  * Extra src register modifiers
 538  *
 539  * If Complement is TRUE, the source register is modified by subtracting it
 540  * from 1.0.
 541  *
 542  * If Bias is TRUE, the source register is modified by subtracting 0.5 from it.
 543  *
 544  * If Scale2X is TRUE, the source register is modified by multiplying it by 2.0.
 545  *
 546  * If Absolute is TRUE, the source register is modified by removing the sign.
 547  *
 548  * If Negate is TRUE, the source register is modified by negating it.
 549  */
 550
 551 struct tgsi_src_register_ext_mod
 552 {
 553    unsigned Type         : 4;    /* TGSI_SRC_REGISTER_EXT_TYPE_MOD */
 554    unsigned Complement   : 1;    /* BOOL */
 555    unsigned Bias         : 1;    /* BOOL */
 556    unsigned Scale2X      : 1;    /* BOOL */
 557    unsigned Absolute     : 1;    /* BOOL */
 558    unsigned Negate       : 1;    /* BOOL */
 559    unsigned Padding      : 22;
 560    unsigned Extended     : 1;    /* BOOL */
 561 };
 562
 563 struct tgsi_dimension
 564 {
 565    unsigned Indirect    : 1;  /* BOOL */
 566    unsigned Dimension   : 1;  /* BOOL */
 567    unsigned Padding     : 13;
 568    int      Index       : 16; /* SINT */
 569    unsigned Extended    : 1;  /* BOOL */
 570 };
 571
 572 struct tgsi_dst_register
 573 {
 574    unsigned File        : 4;  /* TGSI_FILE_ */
 575    unsigned WriteMask   : 4;  /* TGSI_WRITEMASK_ */
 576    unsigned Indirect    : 1;  /* BOOL */
 577    unsigned Dimension   : 1;  /* BOOL */
 578    int      Index       : 16; /* SINT */
 579    unsigned Padding     : 5;
 580    unsigned Extended    : 1;  /* BOOL */
 581 };
 582
 583 /*
 584  * If tgsi_dst_register::Extended is TRUE, tgsi_dst_register_ext follows.
 585  *
 586  * Then, if tgsi_dst_register::Indirect is TRUE, tgsi_src_register follows.
 587  */
 588
 589 #define TGSI_DST_REGISTER_EXT_TYPE_CONDCODE     0
 590 #define TGSI_DST_REGISTER_EXT_TYPE_MODULATE     1
 591 #define TGSI_DST_REGISTER_EXT_TYPE_PREDICATE    2
 592
 593 struct tgsi_dst_register_ext
 594 {
 595    unsigned Type     : 4;    /* TGSI_DST_REGISTER_EXT_TYPE_ */
 596    unsigned Padding  : 27;
 597    unsigned Extended : 1;    /* BOOL */
 598 };
 599
 600 /**
 601  * Extra destination register modifiers
 602  *
 603  * If tgsi_dst_register_ext::Type is TGSI_DST_REGISTER_EXT_TYPE_CONDCODE,
 604  * it should be cast to tgsi_dst_register_ext_condcode.
 605  *
 606  * If tgsi_dst_register_ext::Type is TGSI_DST_REGISTER_EXT_TYPE_MODULATE,
 607  * it should be cast to tgsi_dst_register_ext_modulate.
 608  *
 609  * If tgsi_dst_register_ext::Type is TGSI_DST_REGISTER_EXT_TYPE_PREDICATE,
 610  * it should be cast to tgsi_dst_register_ext_predicate.
 611  *
 612  * If tgsi_dst_register_ext::Extended is TRUE, another tgsi_dst_register_ext
 613  * follows.
 614  */
 615 struct tgsi_dst_register_ext_concode
 616 {
 617    unsigned Type         : 4;    /* TGSI_DST_REGISTER_EXT_TYPE_CONDCODE */
 618    unsigned CondMask     : 4;    /* TGSI_CC_ */
 619    unsigned CondSwizzleX : 2;    /* TGSI_SWIZZLE_ */
 620    unsigned CondSwizzleY : 2;    /* TGSI_SWIZZLE_ */
 621    unsigned CondSwizzleZ : 2;    /* TGSI_SWIZZLE_ */
 622    unsigned CondSwizzleW : 2;    /* TGSI_SWIZZLE_ */
 623    unsigned CondSrcIndex : 4;    /* UINT */
 624    unsigned Padding      : 11;
 625    unsigned Extended     : 1;    /* BOOL */
 626 };
 627
 628 #define TGSI_MODULATE_1X        0
 629 #define TGSI_MODULATE_2X        1
 630 #define TGSI_MODULATE_4X        2
 631 #define TGSI_MODULATE_8X        3
 632 #define TGSI_MODULATE_HALF      4
 633 #define TGSI_MODULATE_QUARTER   5
 634 #define TGSI_MODULATE_EIGHTH    6
 635 #define TGSI_MODULATE_COUNT     7
 636
 637 struct tgsi_dst_register_ext_modulate
 638 {
 639    unsigned Type     : 4;    /* TGSI_DST_REGISTER_EXT_TYPE_MODULATE */
 640    unsigned Modulate : 4;    /* TGSI_MODULATE_ */
 641    unsigned Padding  : 23;
 642    unsigned Extended : 1;    /* BOOL */
 643 };
 644
 645 /*
 646  * Currently, the following constraints apply.
 647  *
 648  * - PredSwizzleXYZW is either set to identity or replicate.
 649  * - PredSrcIndex is 0.
 650  */
 651
 652 struct tgsi_dst_register_ext_predicate
 653 {
 654    unsigned Type         : 4;    /* TGSI_DST_REGISTER_EXT_TYPE_PREDICATE */
 655    unsigned PredSwizzleX : 2;    /* TGSI_SWIZZLE_ */
 656    unsigned PredSwizzleY : 2;    /* TGSI_SWIZZLE_ */
 657    unsigned PredSwizzleZ : 2;    /* TGSI_SWIZZLE_ */
 658    unsigned PredSwizzleW : 2;    /* TGSI_SWIZZLE_ */
 659    unsigned PredSrcIndex : 4;    /* UINT */
 660    unsigned Negate       : 1;    /* BOOL */
 661    unsigned Padding      : 14;
 662    unsigned Extended     : 1;    /* BOOL */
 663 };
 664
 665
 666 #ifdef __cplusplus
 667 }
 668 #endif
 669
 670 #endif /* TGSI_TOKEN_H */
 671