src/gallium/auxiliary/tgsi/tgsi_exec.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007-2008 VMware, Inc.
   4  * All Rights Reserved.
   5  * Copyright 2009-2010 VMware, Inc.  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 VMWARE 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 TGSI_EXEC_H
  30 #define TGSI_EXEC_H
  31
  32 #include "pipe/p_compiler.h"
  33 #include "pipe/p_state.h"
  34 #include "pipe/p_shader_tokens.h"
  35
  36 #if defined __cplusplus
  37 extern "C" {
  38 #endif
  39
  40 #define TGSI_CHAN_X 0
  41 #define TGSI_CHAN_Y 1
  42 #define TGSI_CHAN_Z 2
  43 #define TGSI_CHAN_W 3
  44
  45 #define TGSI_NUM_CHANNELS 4  /* R,G,B,A */
  46 #define TGSI_QUAD_SIZE    4  /* 4 pixel/quad */
  47
  48 #define TGSI_FOR_EACH_CHANNEL( CHAN )\
  49    for (CHAN = 0; CHAN < TGSI_NUM_CHANNELS; CHAN++)
  50
  51 #define TGSI_IS_DST0_CHANNEL_ENABLED( INST, CHAN )\
  52    ((INST)->Dst[0].Register.WriteMask & (1 << (CHAN)))
  53
  54 #define TGSI_IF_IS_DST0_CHANNEL_ENABLED( INST, CHAN )\
  55    if (TGSI_IS_DST0_CHANNEL_ENABLED( INST, CHAN ))
  56
  57 #define TGSI_FOR_EACH_DST0_ENABLED_CHANNEL( INST, CHAN )\
  58    TGSI_FOR_EACH_CHANNEL( CHAN )\
  59       TGSI_IF_IS_DST0_CHANNEL_ENABLED( INST, CHAN )
  60
  61 #define TGSI_IS_DST1_CHANNEL_ENABLED( INST, CHAN )\
  62    ((INST)->Dst[1].Register.WriteMask & (1 << (CHAN)))
  63
  64 #define TGSI_IF_IS_DST1_CHANNEL_ENABLED( INST, CHAN )\
  65    if (TGSI_IS_DST1_CHANNEL_ENABLED( INST, CHAN ))
  66
  67 #define TGSI_FOR_EACH_DST1_ENABLED_CHANNEL( INST, CHAN )\
  68    TGSI_FOR_EACH_CHANNEL( CHAN )\
  69       TGSI_IF_IS_DST1_CHANNEL_ENABLED( INST, CHAN )
  70
  71 /**
  72   * Registers may be treated as float, signed int or unsigned int.
  73   */
  74 union tgsi_exec_channel
  75 {
  76    float    f[TGSI_QUAD_SIZE];
  77    int      i[TGSI_QUAD_SIZE];
  78    unsigned u[TGSI_QUAD_SIZE];
  79 };
  80
  81 /**
  82   * A vector[RGBA] of channels[4 pixels]
  83   */
  84 struct tgsi_exec_vector
  85 {
  86    union tgsi_exec_channel xyzw[TGSI_NUM_CHANNELS];
  87 };
  88
  89 /**
  90  * For fragment programs, information for computing fragment input
  91  * values from plane equation of the triangle/line.
  92  */
  93 struct tgsi_interp_coef
  94 {
  95    float a0[TGSI_NUM_CHANNELS]; /* in an xyzw layout */
  96    float dadx[TGSI_NUM_CHANNELS];
  97    float dady[TGSI_NUM_CHANNELS];
  98 };
  99
 100 enum tgsi_sampler_control
 101 {
 102    TGSI_SAMPLER_LOD_NONE,
 103    TGSI_SAMPLER_LOD_BIAS,
 104    TGSI_SAMPLER_LOD_EXPLICIT,
 105    TGSI_SAMPLER_LOD_ZERO,
 106    TGSI_SAMPLER_DERIVS_EXPLICIT,
 107    TGSI_SAMPLER_GATHER,
 108 };
 109
 110 struct tgsi_image_params {
 111    unsigned unit;
 112    unsigned tgsi_tex_instr;
 113    enum pipe_format format;
 114    unsigned execmask;
 115 };
 116
 117 struct tgsi_image {
 118    /* image interfaces */
 119    void (*load)(const struct tgsi_image *image,
 120                 const struct tgsi_image_params *params,
 121                 const int s[TGSI_QUAD_SIZE],
 122                 const int t[TGSI_QUAD_SIZE],
 123                 const int r[TGSI_QUAD_SIZE],
 124                 const int sample[TGSI_QUAD_SIZE],
 125                 float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]);
 126
 127    void (*store)(const struct tgsi_image *image,
 128                  const struct tgsi_image_params *params,
 129                  const int s[TGSI_QUAD_SIZE],
 130                  const int t[TGSI_QUAD_SIZE],
 131                  const int r[TGSI_QUAD_SIZE],
 132                  const int sample[TGSI_QUAD_SIZE],
 133                  float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]);
 134
 135    void (*op)(const struct tgsi_image *image,
 136               const struct tgsi_image_params *params,
 137               enum tgsi_opcode opcode,
 138               const int s[TGSI_QUAD_SIZE],
 139               const int t[TGSI_QUAD_SIZE],
 140               const int r[TGSI_QUAD_SIZE],
 141               const int sample[TGSI_QUAD_SIZE],
 142               float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE],
 143               float rgba2[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]);
 144
 145    void (*get_dims)(const struct tgsi_image *image,
 146                     const struct tgsi_image_params *params,
 147                     int dims[4]);
 148 };
 149
 150 struct tgsi_buffer_params {
 151    unsigned unit;
 152    unsigned execmask;
 153    unsigned writemask;
 154 };
 155
 156 struct tgsi_buffer {
 157    /* buffer interfaces */
 158    void (*load)(const struct tgsi_buffer *buffer,
 159                 const struct tgsi_buffer_params *params,
 160                 const int s[TGSI_QUAD_SIZE],
 161                 float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]);
 162
 163    void (*store)(const struct tgsi_buffer *buffer,
 164                  const struct tgsi_buffer_params *params,
 165                  const int s[TGSI_QUAD_SIZE],
 166                  float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]);
 167
 168    void (*op)(const struct tgsi_buffer *buffer,
 169               const struct tgsi_buffer_params *params,
 170               enum tgsi_opcode opcode,
 171               const int s[TGSI_QUAD_SIZE],
 172               float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE],
 173               float rgba2[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]);
 174
 175    void (*get_dims)(const struct tgsi_buffer *buffer,
 176                     const struct tgsi_buffer_params *params,
 177                     int *dim);
 178 };
 179
 180 /**
 181  * Information for sampling textures, which must be implemented
 182  * by code outside the TGSI executor.
 183  */
 184 struct tgsi_sampler
 185 {
 186    /** Get samples for four fragments in a quad */
 187    /* this interface contains 5 sets of channels that vary
 188     * depending on the sampler.
 189     * s - the first texture coordinate for sampling.
 190     * t - the second texture coordinate for sampling - unused for 1D,
 191           layer for 1D arrays.
 192     * r - the third coordinate for sampling for 3D, cube, cube arrays,
 193     *     layer for 2D arrays. Compare value for 1D/2D shadows.
 194     * c0 - Compare value for shadow cube and shadow 2d arrays,
 195     *      layer for cube arrays.
 196     * derivs - explicit derivatives.
 197     * offset - texel offsets
 198     * lod - lod value, except for shadow cube arrays (compare value there).
 199     */
 200    void (*get_samples)(struct tgsi_sampler *sampler,
 201                        const unsigned sview_index,
 202                        const unsigned sampler_index,
 203                        const float s[TGSI_QUAD_SIZE],
 204                        const float t[TGSI_QUAD_SIZE],
 205                        const float r[TGSI_QUAD_SIZE],
 206                        const float c0[TGSI_QUAD_SIZE],
 207                        const float c1[TGSI_QUAD_SIZE],
 208                        float derivs[3][2][TGSI_QUAD_SIZE],
 209                        const int8_t offset[3],
 210                        enum tgsi_sampler_control control,
 211                        float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]);
 212    void (*get_dims)(struct tgsi_sampler *sampler,
 213                     const unsigned sview_index,
 214                     int level, int dims[4]);
 215    void (*get_texel)(struct tgsi_sampler *sampler,
 216                      const unsigned sview_index,
 217                      const int i[TGSI_QUAD_SIZE],
 218                      const int j[TGSI_QUAD_SIZE], const int k[TGSI_QUAD_SIZE],
 219                      const int lod[TGSI_QUAD_SIZE], const int8_t offset[3],
 220                      float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]);
 221    void (*query_lod)(const struct tgsi_sampler *tgsi_sampler,
 222                      const unsigned sview_index,
 223                      const unsigned sampler_index,
 224                      const float s[TGSI_QUAD_SIZE],
 225                      const float t[TGSI_QUAD_SIZE],
 226                      const float p[TGSI_QUAD_SIZE],
 227                      const float c0[TGSI_QUAD_SIZE],
 228                      const enum tgsi_sampler_control control,
 229                      float mipmap[TGSI_QUAD_SIZE],
 230                      float lod[TGSI_QUAD_SIZE]);
 231 };
 232
 233 #define TGSI_EXEC_NUM_TEMPS       4096
 234 #define TGSI_EXEC_NUM_IMMEDIATES  256
 235
 236 /*
 237  * Locations of various utility registers (_I = Index, _C = Channel)
 238  */
 239 #define TGSI_EXEC_TEMP_00000000_I   (TGSI_EXEC_NUM_TEMPS + 0)
 240 #define TGSI_EXEC_TEMP_00000000_C   0
 241
 242 #define TGSI_EXEC_TEMP_7FFFFFFF_I   (TGSI_EXEC_NUM_TEMPS + 0)
 243 #define TGSI_EXEC_TEMP_7FFFFFFF_C   1
 244
 245 #define TGSI_EXEC_TEMP_80000000_I   (TGSI_EXEC_NUM_TEMPS + 0)
 246 #define TGSI_EXEC_TEMP_80000000_C   2
 247
 248 #define TGSI_EXEC_TEMP_FFFFFFFF_I   (TGSI_EXEC_NUM_TEMPS + 0)
 249 #define TGSI_EXEC_TEMP_FFFFFFFF_C   3
 250
 251 #define TGSI_EXEC_TEMP_ONE_I        (TGSI_EXEC_NUM_TEMPS + 1)
 252 #define TGSI_EXEC_TEMP_ONE_C        0
 253
 254 #define TGSI_EXEC_TEMP_TWO_I        (TGSI_EXEC_NUM_TEMPS + 1)
 255 #define TGSI_EXEC_TEMP_TWO_C        1
 256
 257 #define TGSI_EXEC_TEMP_128_I        (TGSI_EXEC_NUM_TEMPS + 1)
 258 #define TGSI_EXEC_TEMP_128_C        2
 259
 260 #define TGSI_EXEC_TEMP_MINUS_128_I  (TGSI_EXEC_NUM_TEMPS + 1)
 261 #define TGSI_EXEC_TEMP_MINUS_128_C  3
 262
 263 #define TGSI_EXEC_TEMP_KILMASK_I    (TGSI_EXEC_NUM_TEMPS + 2)
 264 #define TGSI_EXEC_TEMP_KILMASK_C    0
 265
 266 #define TGSI_EXEC_TEMP_OUTPUT_I     (TGSI_EXEC_NUM_TEMPS + 2)
 267 #define TGSI_EXEC_TEMP_OUTPUT_C     1
 268
 269 #define TGSI_EXEC_TEMP_PRIMITIVE_I  (TGSI_EXEC_NUM_TEMPS + 2)
 270 #define TGSI_EXEC_TEMP_PRIMITIVE_C  2
 271
 272 #define TGSI_EXEC_TEMP_THREE_I      (TGSI_EXEC_NUM_TEMPS + 2)
 273 #define TGSI_EXEC_TEMP_THREE_C      3
 274
 275 #define TGSI_EXEC_TEMP_HALF_I       (TGSI_EXEC_NUM_TEMPS + 3)
 276 #define TGSI_EXEC_TEMP_HALF_C       0
 277
 278 /* 4 register buffer for various purposes */
 279 #define TGSI_EXEC_TEMP_R0           (TGSI_EXEC_NUM_TEMPS + 4)
 280 #define TGSI_EXEC_NUM_TEMP_R        4
 281
 282 #define TGSI_EXEC_TEMP_ADDR         (TGSI_EXEC_NUM_TEMPS + 8)
 283 #define TGSI_EXEC_NUM_ADDRS         3
 284
 285 #define TGSI_EXEC_NUM_TEMP_EXTRAS   12
 286
 287
 288
 289 #define TGSI_EXEC_MAX_NESTING  32
 290 #define TGSI_EXEC_MAX_COND_NESTING  TGSI_EXEC_MAX_NESTING
 291 #define TGSI_EXEC_MAX_LOOP_NESTING  TGSI_EXEC_MAX_NESTING
 292 #define TGSI_EXEC_MAX_SWITCH_NESTING TGSI_EXEC_MAX_NESTING
 293 #define TGSI_EXEC_MAX_CALL_NESTING  TGSI_EXEC_MAX_NESTING
 294
 295 /* The maximum number of input attributes per vertex. For 2D
 296  * input register files, this is the stride between two 1D
 297  * arrays.
 298  */
 299 #define TGSI_EXEC_MAX_INPUT_ATTRIBS 32
 300
 301 /* The maximum number of bytes per constant buffer.
 302  */
 303 #define TGSI_EXEC_MAX_CONST_BUFFER_SIZE  (4096 * sizeof(float[4]))
 304
 305 /* The maximum number of vertices per primitive */
 306 #define TGSI_MAX_PRIM_VERTICES 6
 307
 308 /* The maximum number of primitives to be generated */
 309 #define TGSI_MAX_PRIMITIVES 64
 310
 311 /* The maximum total number of vertices */
 312 #define TGSI_MAX_TOTAL_VERTICES (TGSI_MAX_PRIM_VERTICES * TGSI_MAX_PRIMITIVES * PIPE_MAX_ATTRIBS)
 313
 314 #define TGSI_MAX_MISC_INPUTS 8
 315
 316 /** function call/activation record */
 317 struct tgsi_call_record
 318 {
 319    uint CondStackTop;
 320    uint LoopStackTop;
 321    uint ContStackTop;
 322    int SwitchStackTop;
 323    int BreakStackTop;
 324    uint ReturnAddr;
 325 };
 326
 327
 328 /* Switch-case block state. */
 329 struct tgsi_switch_record {
 330    uint mask;                          /**< execution mask */
 331    union tgsi_exec_channel selector;   /**< a value case statements are compared to */
 332    uint defaultMask;                   /**< non-execute mask for default case */
 333 };
 334
 335
 336 enum tgsi_break_type {
 337    TGSI_EXEC_BREAK_INSIDE_LOOP,
 338    TGSI_EXEC_BREAK_INSIDE_SWITCH
 339 };
 340
 341
 342 #define TGSI_EXEC_MAX_BREAK_STACK (TGSI_EXEC_MAX_LOOP_NESTING + TGSI_EXEC_MAX_SWITCH_NESTING)
 343
 344
 345 /**
 346  * Run-time virtual machine state for executing TGSI shader.
 347  */
 348 struct tgsi_exec_machine
 349 {
 350    /* Total = program temporaries + internal temporaries
 351     */
 352    struct tgsi_exec_vector       Temps[TGSI_EXEC_NUM_TEMPS +
 353                                        TGSI_EXEC_NUM_TEMP_EXTRAS];
 354
 355    float                         Imms[TGSI_EXEC_NUM_IMMEDIATES][4];
 356
 357    float                         ImmArray[TGSI_EXEC_NUM_IMMEDIATES][4];
 358
 359    struct tgsi_exec_vector       *Inputs;
 360    struct tgsi_exec_vector       *Outputs;
 361
 362    /* System values */
 363    unsigned                      SysSemanticToIndex[TGSI_SEMANTIC_COUNT];
 364    struct tgsi_exec_vector       SystemValue[TGSI_MAX_MISC_INPUTS];
 365
 366    struct tgsi_exec_vector       *Addrs;
 367
 368    struct tgsi_sampler           *Sampler;
 369
 370    struct tgsi_image             *Image;
 371    struct tgsi_buffer            *Buffer;
 372    unsigned                      ImmLimit;
 373
 374    const void *Consts[PIPE_MAX_CONSTANT_BUFFERS];
 375    unsigned ConstsSize[PIPE_MAX_CONSTANT_BUFFERS];
 376
 377    const struct tgsi_token       *Tokens;   /**< Declarations, instructions */
 378    enum pipe_shader_type         ShaderType; /**< PIPE_SHADER_x */
 379
 380    /* GEOMETRY processor only. */
 381    unsigned                      *Primitives;
 382    unsigned                       NumOutputs;
 383    unsigned                       MaxGeometryShaderOutputs;
 384    unsigned                       MaxOutputVertices;
 385
 386    /* FRAGMENT processor only. */
 387    const struct tgsi_interp_coef *InterpCoefs;
 388    struct tgsi_exec_vector       QuadPos;
 389    float                         Face;    /**< +1 if front facing, -1 if back facing */
 390    bool                          flatshade_color;
 391
 392    /* Compute Only */
 393    void                          *LocalMem;
 394    unsigned                      LocalMemSize;
 395
 396    /* See GLSL 4.50 specification for definition of helper invocations */
 397    uint NonHelperMask;  /**< non-helpers */
 398    /* Conditional execution masks */
 399    uint CondMask;  /**< For IF/ELSE/ENDIF */
 400    uint LoopMask;  /**< For BGNLOOP/ENDLOOP */
 401    uint ContMask;  /**< For loop CONT statements */
 402    uint FuncMask;  /**< For function calls */
 403    uint ExecMask;  /**< = CondMask & LoopMask */
 404
 405    /* Current switch-case state. */
 406    struct tgsi_switch_record Switch;
 407
 408    /* Current break type. */
 409    enum tgsi_break_type BreakType;
 410
 411    /** Condition mask stack (for nested conditionals) */
 412    uint CondStack[TGSI_EXEC_MAX_COND_NESTING];
 413    int CondStackTop;
 414
 415    /** Loop mask stack (for nested loops) */
 416    uint LoopStack[TGSI_EXEC_MAX_LOOP_NESTING];
 417    int LoopStackTop;
 418
 419    /** Loop label stack */
 420    uint LoopLabelStack[TGSI_EXEC_MAX_LOOP_NESTING];
 421    int LoopLabelStackTop;
 422
 423    /** Loop continue mask stack (see comments in tgsi_exec.c) */
 424    uint ContStack[TGSI_EXEC_MAX_LOOP_NESTING];
 425    int ContStackTop;
 426
 427    /** Switch case stack */
 428    struct tgsi_switch_record SwitchStack[TGSI_EXEC_MAX_SWITCH_NESTING];
 429    int SwitchStackTop;
 430
 431    enum tgsi_break_type BreakStack[TGSI_EXEC_MAX_BREAK_STACK];
 432    int BreakStackTop;
 433
 434    /** Function execution mask stack (for executing subroutine code) */
 435    uint FuncStack[TGSI_EXEC_MAX_CALL_NESTING];
 436    int FuncStackTop;
 437
 438    /** Function call stack for saving/restoring the program counter */
 439    struct tgsi_call_record CallStack[TGSI_EXEC_MAX_CALL_NESTING];
 440    int CallStackTop;
 441
 442    struct tgsi_full_instruction *Instructions;
 443    uint NumInstructions;
 444
 445    struct tgsi_full_declaration *Declarations;
 446    uint NumDeclarations;
 447
 448    struct tgsi_declaration_sampler_view
 449       SamplerViews[PIPE_MAX_SHADER_SAMPLER_VIEWS];
 450
 451    boolean UsedGeometryShader;
 452
 453    int pc;
 454 };
 455
 456 struct tgsi_exec_machine *
 457 tgsi_exec_machine_create(enum pipe_shader_type shader_type);
 458
 459 void
 460 tgsi_exec_machine_destroy(struct tgsi_exec_machine *mach);
 461
 462
 463 void
 464 tgsi_exec_machine_bind_shader(
 465    struct tgsi_exec_machine *mach,
 466    const struct tgsi_token *tokens,
 467    struct tgsi_sampler *sampler,
 468    struct tgsi_image *image,
 469    struct tgsi_buffer *buffer);
 470
 471 uint
 472 tgsi_exec_machine_run(
 473    struct tgsi_exec_machine *mach, int start_pc );
 474
 475
 476 void
 477 tgsi_exec_machine_free_data(struct tgsi_exec_machine *mach);
 478
 479
 480 boolean
 481 tgsi_check_soa_dependencies(const struct tgsi_full_instruction *inst);
 482
 483
 484 extern void
 485 tgsi_exec_set_constant_buffers(struct tgsi_exec_machine *mach,
 486                                unsigned num_bufs,
 487                                const void **bufs,
 488                                const unsigned *buf_sizes);
 489
 490
 491 static inline int
 492 tgsi_exec_get_shader_param(enum pipe_shader_cap param)
 493 {
 494    switch(param) {
 495    case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 496    case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 497    case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 498    case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 499       return INT_MAX;
 500    case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 501       return TGSI_EXEC_MAX_NESTING;
 502    case PIPE_SHADER_CAP_MAX_INPUTS:
 503       return TGSI_EXEC_MAX_INPUT_ATTRIBS;
 504    case PIPE_SHADER_CAP_MAX_OUTPUTS:
 505       return 32;
 506    case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 507       return TGSI_EXEC_MAX_CONST_BUFFER_SIZE;
 508    case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 509       return PIPE_MAX_CONSTANT_BUFFERS;
 510    case PIPE_SHADER_CAP_MAX_TEMPS:
 511       return TGSI_EXEC_NUM_TEMPS;
 512    case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 513       return 1;
 514    case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 515    case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 516    case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 517    case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 518       return 1;
 519    case PIPE_SHADER_CAP_SUBROUTINES:
 520       return 1;
 521    case PIPE_SHADER_CAP_INTEGERS:
 522       return 1;
 523    case PIPE_SHADER_CAP_INT64_ATOMICS:
 524    case PIPE_SHADER_CAP_FP16:
 525       return 0;
 526    case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 527       return PIPE_MAX_SAMPLERS;
 528    case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 529       return PIPE_MAX_SHADER_SAMPLER_VIEWS;
 530    case PIPE_SHADER_CAP_PREFERRED_IR:
 531       return PIPE_SHADER_IR_TGSI;
 532    case PIPE_SHADER_CAP_SUPPORTED_IRS:
 533       return 1 << PIPE_SHADER_IR_TGSI;
 534    case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 535       return 1;
 536    case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 537    case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
 538    case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 539       return 1;
 540    case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 541    case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 542    case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
 543    case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
 544    case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS:
 545    case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS:
 546       return 0;
 547    case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 548       return PIPE_MAX_SHADER_BUFFERS;
 549    case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
 550       return PIPE_MAX_SHADER_IMAGES;
 551
 552    case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 553       return 32;
 554    }
 555    /* if we get here, we missed a shader cap above (and should have seen
 556     * a compiler warning.)
 557     */
 558    return 0;
 559 }
 560
 561 #if defined __cplusplus
 562 } /* extern "C" */
 563 #endif
 564
 565 #endif /* TGSI_EXEC_H */