src/compiler/glsl/ast_type.cpp

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include "ast.h"
  25
  26 void
  27 ast_type_specifier::print(void) const
  28 {
  29    if (structure) {
  30       structure->print();
  31    } else {
  32       printf("%s ", type_name);
  33    }
  34
  35    if (array_specifier) {
  36       array_specifier->print();
  37    }
  38 }
  39
  40 bool
  41 ast_fully_specified_type::has_qualifiers(_mesa_glsl_parse_state *state) const
  42 {
  43    /* 'subroutine' isnt a real qualifier. */
  44    ast_type_qualifier subroutine_only;
  45    subroutine_only.flags.i = 0;
  46    subroutine_only.flags.q.subroutine = 1;
  47    subroutine_only.flags.q.subroutine_def = 1;
  48    if (state->has_explicit_uniform_location()) {
  49       subroutine_only.flags.q.explicit_index = 1;
  50    }
  51    return (this->qualifier.flags.i & ~subroutine_only.flags.i) != 0;
  52 }
  53
  54 bool ast_type_qualifier::has_interpolation() const
  55 {
  56    return this->flags.q.smooth
  57           || this->flags.q.flat
  58           || this->flags.q.noperspective;
  59 }
  60
  61 bool
  62 ast_type_qualifier::has_layout() const
  63 {
  64    return this->flags.q.origin_upper_left
  65           || this->flags.q.pixel_center_integer
  66           || this->flags.q.depth_any
  67           || this->flags.q.depth_greater
  68           || this->flags.q.depth_less
  69           || this->flags.q.depth_unchanged
  70           || this->flags.q.std140
  71           || this->flags.q.std430
  72           || this->flags.q.shared
  73           || this->flags.q.column_major
  74           || this->flags.q.row_major
  75           || this->flags.q.packed
  76           || this->flags.q.explicit_align
  77           || this->flags.q.explicit_component
  78           || this->flags.q.explicit_location
  79           || this->flags.q.explicit_image_format
  80           || this->flags.q.explicit_index
  81           || this->flags.q.explicit_binding
  82           || this->flags.q.explicit_offset
  83           || this->flags.q.explicit_stream
  84           || this->flags.q.explicit_xfb_buffer
  85           || this->flags.q.explicit_xfb_offset
  86           || this->flags.q.explicit_xfb_stride;
  87 }
  88
  89 bool
  90 ast_type_qualifier::has_storage() const
  91 {
  92    return this->flags.q.constant
  93           || this->flags.q.attribute
  94           || this->flags.q.varying
  95           || this->flags.q.in
  96           || this->flags.q.out
  97           || this->flags.q.uniform
  98           || this->flags.q.buffer
  99           || this->flags.q.shared_storage;
 100 }
 101
 102 bool
 103 ast_type_qualifier::has_auxiliary_storage() const
 104 {
 105    return this->flags.q.centroid
 106           || this->flags.q.sample
 107           || this->flags.q.patch;
 108 }
 109
 110 bool ast_type_qualifier::has_memory() const
 111 {
 112    return this->flags.q.coherent
 113           || this->flags.q._volatile
 114           || this->flags.q.restrict_flag
 115           || this->flags.q.read_only
 116           || this->flags.q.write_only;
 117 }
 118
 119 /**
 120  * This function merges both duplicate identifies within a single layout and
 121  * multiple layout qualifiers on a single variable declaration. The
 122  * is_single_layout_merge param is used differentiate between the two.
 123  */
 124 bool
 125 ast_type_qualifier::merge_qualifier(YYLTYPE *loc,
 126                                     _mesa_glsl_parse_state *state,
 127                                     const ast_type_qualifier &q,
 128                                     bool is_single_layout_merge)
 129 {
 130    ast_type_qualifier ubo_mat_mask;
 131    ubo_mat_mask.flags.i = 0;
 132    ubo_mat_mask.flags.q.row_major = 1;
 133    ubo_mat_mask.flags.q.column_major = 1;
 134
 135    ast_type_qualifier ubo_layout_mask;
 136    ubo_layout_mask.flags.i = 0;
 137    ubo_layout_mask.flags.q.std140 = 1;
 138    ubo_layout_mask.flags.q.packed = 1;
 139    ubo_layout_mask.flags.q.shared = 1;
 140    ubo_layout_mask.flags.q.std430 = 1;
 141
 142    ast_type_qualifier ubo_binding_mask;
 143    ubo_binding_mask.flags.i = 0;
 144    ubo_binding_mask.flags.q.explicit_binding = 1;
 145    ubo_binding_mask.flags.q.explicit_offset = 1;
 146
 147    ast_type_qualifier stream_layout_mask;
 148    stream_layout_mask.flags.i = 0;
 149    stream_layout_mask.flags.q.stream = 1;
 150
 151    /* FIXME: We should probably do interface and function param validation
 152     * separately.
 153     */
 154    ast_type_qualifier input_layout_mask;
 155    input_layout_mask.flags.i = 0;
 156    input_layout_mask.flags.q.centroid = 1;
 157    /* Function params can have constant */
 158    input_layout_mask.flags.q.constant = 1;
 159    input_layout_mask.flags.q.explicit_component = 1;
 160    input_layout_mask.flags.q.explicit_location = 1;
 161    input_layout_mask.flags.q.flat = 1;
 162    input_layout_mask.flags.q.in = 1;
 163    input_layout_mask.flags.q.invariant = 1;
 164    input_layout_mask.flags.q.noperspective = 1;
 165    input_layout_mask.flags.q.origin_upper_left = 1;
 166    /* Function params 'inout' will set this */
 167    input_layout_mask.flags.q.out = 1;
 168    input_layout_mask.flags.q.patch = 1;
 169    input_layout_mask.flags.q.pixel_center_integer = 1;
 170    input_layout_mask.flags.q.precise = 1;
 171    input_layout_mask.flags.q.sample = 1;
 172    input_layout_mask.flags.q.smooth = 1;
 173
 174    /* Uniform block layout qualifiers get to overwrite each
 175     * other (rightmost having priority), while all other
 176     * qualifiers currently don't allow duplicates.
 177     */
 178    ast_type_qualifier allowed_duplicates_mask;
 179    allowed_duplicates_mask.flags.i =
 180       ubo_mat_mask.flags.i |
 181       ubo_layout_mask.flags.i |
 182       ubo_binding_mask.flags.i;
 183
 184    /* Geometry shaders can have several layout qualifiers
 185     * assigning different stream values.
 186     */
 187    if (state->stage == MESA_SHADER_GEOMETRY) {
 188       allowed_duplicates_mask.flags.i |=
 189          stream_layout_mask.flags.i;
 190    }
 191
 192    if (is_single_layout_merge && !state->has_enhanced_layouts() &&
 193        (this->flags.i & q.flags.i & ~allowed_duplicates_mask.flags.i) != 0) {
 194       _mesa_glsl_error(loc, state, "duplicate layout qualifiers used");
 195       return false;
 196    }
 197
 198    if (q.flags.q.prim_type) {
 199       if (this->flags.q.prim_type && this->prim_type != q.prim_type) {
 200          _mesa_glsl_error(loc, state,
 201                           "conflicting input primitive %s specified",
 202                           state->stage == MESA_SHADER_GEOMETRY ?
 203                           "type" : "mode");
 204          return false;
 205       }
 206       this->flags.q.prim_type = 1;
 207       this->prim_type = q.prim_type;
 208    }
 209
 210    if (q.flags.q.max_vertices) {
 211       if (this->flags.q.max_vertices && !is_single_layout_merge) {
 212          this->max_vertices->merge_qualifier(q.max_vertices);
 213       } else {
 214          this->flags.q.max_vertices = 1;
 215          this->max_vertices = q.max_vertices;
 216       }
 217    }
 218
 219    if (q.flags.q.subroutine_def) {
 220       if (this->flags.q.subroutine_def) {
 221          _mesa_glsl_error(loc, state,
 222                           "conflicting subroutine qualifiers used");
 223       } else {
 224          this->subroutine_list = q.subroutine_list;
 225       }
 226    }
 227
 228    if (q.flags.q.invocations) {
 229       if (this->flags.q.invocations && !is_single_layout_merge) {
 230          this->invocations->merge_qualifier(q.invocations);
 231       } else {
 232          this->flags.q.invocations = 1;
 233          this->invocations = q.invocations;
 234       }
 235    }
 236
 237    if (state->stage == MESA_SHADER_GEOMETRY &&
 238        state->has_explicit_attrib_stream()) {
 239       if (!this->flags.q.explicit_stream) {
 240          if (q.flags.q.stream) {
 241             this->flags.q.stream = 1;
 242             this->stream = q.stream;
 243          } else if (!this->flags.q.stream && this->flags.q.out &&
 244                     !this->flags.q.in) {
 245             /* Assign default global stream value */
 246             this->flags.q.stream = 1;
 247             this->stream = state->out_qualifier->stream;
 248          }
 249       }
 250    }
 251
 252    if (state->has_enhanced_layouts()) {
 253       if (!this->flags.q.explicit_xfb_buffer) {
 254          if (q.flags.q.xfb_buffer) {
 255             this->flags.q.xfb_buffer = 1;
 256             this->xfb_buffer = q.xfb_buffer;
 257          } else if (!this->flags.q.xfb_buffer && this->flags.q.out &&
 258                     !this->flags.q.in) {
 259             /* Assign global xfb_buffer value */
 260             this->flags.q.xfb_buffer = 1;
 261             this->xfb_buffer = state->out_qualifier->xfb_buffer;
 262          }
 263       }
 264
 265       if (q.flags.q.explicit_xfb_stride)
 266          this->xfb_stride = q.xfb_stride;
 267
 268       /* Merge all we xfb_stride qualifiers into the global out */
 269       if (q.flags.q.explicit_xfb_stride || this->flags.q.xfb_stride) {
 270
 271          /* Set xfb_stride flag to 0 to avoid adding duplicates every time
 272           * there is a merge.
 273           */
 274          this->flags.q.xfb_stride = 0;
 275
 276          unsigned buff_idx;
 277          if (process_qualifier_constant(state, loc, "xfb_buffer",
 278                                         this->xfb_buffer, &buff_idx)) {
 279             if (state->out_qualifier->out_xfb_stride[buff_idx]
 280                 && !is_single_layout_merge) {
 281                state->out_qualifier->out_xfb_stride[buff_idx]->merge_qualifier(
 282                   new(state->linalloc) ast_layout_expression(*loc, this->xfb_stride));
 283             } else {
 284                state->out_qualifier->out_xfb_stride[buff_idx] =
 285                   new(state->linalloc) ast_layout_expression(*loc, this->xfb_stride);
 286             }
 287          }
 288       }
 289    }
 290
 291    if (q.flags.q.vertices) {
 292       if (this->flags.q.vertices && !is_single_layout_merge) {
 293          this->vertices->merge_qualifier(q.vertices);
 294       } else {
 295          this->flags.q.vertices = 1;
 296          this->vertices = q.vertices;
 297       }
 298    }
 299
 300    if (q.flags.q.vertex_spacing) {
 301       if (this->flags.q.vertex_spacing && this->vertex_spacing != q.vertex_spacing) {
 302          _mesa_glsl_error(loc, state, "conflicting vertex spacing used");
 303          return false;
 304       }
 305       this->flags.q.vertex_spacing = 1;
 306       this->vertex_spacing = q.vertex_spacing;
 307    }
 308
 309    if (q.flags.q.ordering) {
 310       if (this->flags.q.ordering && this->ordering != q.ordering) {
 311          _mesa_glsl_error(loc, state, "conflicting ordering used");
 312          return false;
 313       }
 314       this->flags.q.ordering = 1;
 315       this->ordering = q.ordering;
 316    }
 317
 318    if (q.flags.q.point_mode) {
 319       if (this->flags.q.point_mode && this->point_mode != q.point_mode) {
 320          _mesa_glsl_error(loc, state, "conflicting point mode used");
 321          return false;
 322       }
 323       this->flags.q.point_mode = 1;
 324       this->point_mode = q.point_mode;
 325    }
 326
 327    if (q.flags.q.early_fragment_tests)
 328       this->flags.q.early_fragment_tests = true;
 329
 330    if ((q.flags.i & ubo_mat_mask.flags.i) != 0)
 331       this->flags.i &= ~ubo_mat_mask.flags.i;
 332    if ((q.flags.i & ubo_layout_mask.flags.i) != 0)
 333       this->flags.i &= ~ubo_layout_mask.flags.i;
 334
 335    for (int i = 0; i < 3; i++) {
 336       if (q.flags.q.local_size & (1 << i)) {
 337          if (this->local_size[i] && !is_single_layout_merge) {
 338             this->local_size[i]->merge_qualifier(q.local_size[i]);
 339          } else {
 340             this->local_size[i] = q.local_size[i];
 341          }
 342       }
 343    }
 344
 345    if (q.flags.q.local_size_variable)
 346       this->flags.q.local_size_variable = true;
 347
 348    this->flags.i |= q.flags.i;
 349
 350    if (this->flags.q.in &&
 351        (this->flags.i & ~input_layout_mask.flags.i) != 0) {
 352       _mesa_glsl_error(loc, state, "invalid input layout qualifier used");
 353       return false;
 354    }
 355
 356    if (q.flags.q.explicit_align)
 357       this->align = q.align;
 358
 359    if (q.flags.q.explicit_location)
 360       this->location = q.location;
 361
 362    if (q.flags.q.explicit_index)
 363       this->index = q.index;
 364
 365   if (q.flags.q.explicit_component)
 366       this->component = q.component;
 367
 368    if (q.flags.q.explicit_binding)
 369       this->binding = q.binding;
 370
 371    if (q.flags.q.explicit_offset || q.flags.q.explicit_xfb_offset)
 372       this->offset = q.offset;
 373
 374    if (q.precision != ast_precision_none)
 375       this->precision = q.precision;
 376
 377    if (q.flags.q.explicit_image_format) {
 378       this->image_format = q.image_format;
 379       this->image_base_type = q.image_base_type;
 380    }
 381
 382    return true;
 383 }
 384
 385 bool
 386 ast_type_qualifier::validate_out_qualifier(YYLTYPE *loc,
 387                                            _mesa_glsl_parse_state *state)
 388 {
 389    bool r = true;
 390    ast_type_qualifier valid_out_mask;
 391    valid_out_mask.flags.i = 0;
 392
 393    switch (state->stage) {
 394    case MESA_SHADER_GEOMETRY:
 395       if (this->flags.q.prim_type) {
 396          /* Make sure this is a valid output primitive type. */
 397          switch (this->prim_type) {
 398          case GL_POINTS:
 399          case GL_LINE_STRIP:
 400          case GL_TRIANGLE_STRIP:
 401             break;
 402          default:
 403             r = false;
 404             _mesa_glsl_error(loc, state, "invalid geometry shader output "
 405                              "primitive type");
 406             break;
 407          }
 408       }
 409
 410       valid_out_mask.flags.q.stream = 1;
 411       valid_out_mask.flags.q.explicit_stream = 1;
 412       valid_out_mask.flags.q.explicit_xfb_buffer = 1;
 413       valid_out_mask.flags.q.xfb_buffer = 1;
 414       valid_out_mask.flags.q.explicit_xfb_stride = 1;
 415       valid_out_mask.flags.q.xfb_stride = 1;
 416       valid_out_mask.flags.q.max_vertices = 1;
 417       valid_out_mask.flags.q.prim_type = 1;
 418       break;
 419    case MESA_SHADER_TESS_CTRL:
 420       valid_out_mask.flags.q.vertices = 1;
 421       valid_out_mask.flags.q.explicit_xfb_buffer = 1;
 422       valid_out_mask.flags.q.xfb_buffer = 1;
 423       valid_out_mask.flags.q.explicit_xfb_stride = 1;
 424       valid_out_mask.flags.q.xfb_stride = 1;
 425       break;
 426    case MESA_SHADER_TESS_EVAL:
 427    case MESA_SHADER_VERTEX:
 428       valid_out_mask.flags.q.explicit_xfb_buffer = 1;
 429       valid_out_mask.flags.q.xfb_buffer = 1;
 430       valid_out_mask.flags.q.explicit_xfb_stride = 1;
 431       valid_out_mask.flags.q.xfb_stride = 1;
 432       break;
 433    case MESA_SHADER_FRAGMENT:
 434       valid_out_mask.flags.q.blend_support = 1;
 435       break;
 436    default:
 437       r = false;
 438       _mesa_glsl_error(loc, state,
 439                        "out layout qualifiers only valid in "
 440                        "geometry, tessellation, vertex and fragment shaders");
 441    }
 442
 443    /* Generate an error when invalid output layout qualifiers are used. */
 444    if ((this->flags.i & ~valid_out_mask.flags.i) != 0) {
 445       r = false;
 446       _mesa_glsl_error(loc, state, "invalid output layout qualifiers used");
 447    }
 448
 449    return r;
 450 }
 451
 452 bool
 453 ast_type_qualifier::merge_into_out_qualifier(YYLTYPE *loc,
 454                                              _mesa_glsl_parse_state *state,
 455                                              ast_node* &node, bool create_node)
 456 {
 457    const bool r = state->out_qualifier->merge_qualifier(loc, state,
 458                                                         *this, false);
 459
 460    switch (state->stage) {
 461    case MESA_SHADER_GEOMETRY:
 462       /* Allow future assignments of global out's stream id value */
 463       state->out_qualifier->flags.q.explicit_stream = 0;
 464       break;
 465    case MESA_SHADER_TESS_CTRL:
 466       if (create_node)
 467          node = new(state->linalloc) ast_tcs_output_layout(*loc);
 468       break;
 469    default:
 470       break;
 471    }
 472
 473    /* Allow future assignments of global out's */
 474    state->out_qualifier->flags.q.explicit_xfb_buffer = 0;
 475    state->out_qualifier->flags.q.explicit_xfb_stride = 0;
 476
 477    return r;
 478 }
 479
 480 bool
 481 ast_type_qualifier::validate_in_qualifier(YYLTYPE *loc,
 482                                           _mesa_glsl_parse_state *state)
 483 {
 484    bool r = true;
 485    ast_type_qualifier valid_in_mask;
 486    valid_in_mask.flags.i = 0;
 487
 488    switch (state->stage) {
 489    case MESA_SHADER_TESS_EVAL:
 490       if (this->flags.q.prim_type) {
 491          /* Make sure this is a valid input primitive type. */
 492          switch (this->prim_type) {
 493          case GL_TRIANGLES:
 494          case GL_QUADS:
 495          case GL_ISOLINES:
 496             break;
 497          default:
 498             r = false;
 499             _mesa_glsl_error(loc, state,
 500                              "invalid tessellation evaluation "
 501                              "shader input primitive type");
 502             break;
 503          }
 504       }
 505
 506       valid_in_mask.flags.q.prim_type = 1;
 507       valid_in_mask.flags.q.vertex_spacing = 1;
 508       valid_in_mask.flags.q.ordering = 1;
 509       valid_in_mask.flags.q.point_mode = 1;
 510       break;
 511    case MESA_SHADER_GEOMETRY:
 512       if (this->flags.q.prim_type) {
 513          /* Make sure this is a valid input primitive type. */
 514          switch (this->prim_type) {
 515          case GL_POINTS:
 516          case GL_LINES:
 517          case GL_LINES_ADJACENCY:
 518          case GL_TRIANGLES:
 519          case GL_TRIANGLES_ADJACENCY:
 520             break;
 521          default:
 522             r = false;
 523             _mesa_glsl_error(loc, state,
 524                              "invalid geometry shader input primitive type");
 525             break;
 526          }
 527       }
 528
 529       valid_in_mask.flags.q.prim_type = 1;
 530       valid_in_mask.flags.q.invocations = 1;
 531       break;
 532    case MESA_SHADER_FRAGMENT:
 533       valid_in_mask.flags.q.early_fragment_tests = 1;
 534       break;
 535    case MESA_SHADER_COMPUTE:
 536       valid_in_mask.flags.q.local_size = 7;
 537       valid_in_mask.flags.q.local_size_variable = 1;
 538       break;
 539    default:
 540       r = false;
 541       _mesa_glsl_error(loc, state,
 542                        "input layout qualifiers only valid in "
 543                        "geometry, tessellation, fragment and compute shaders");
 544       break;
 545    }
 546
 547    /* Generate an error when invalid input layout qualifiers are used. */
 548    if ((this->flags.i & ~valid_in_mask.flags.i) != 0) {
 549       r = false;
 550       _mesa_glsl_error(loc, state, "invalid input layout qualifiers used");
 551    }
 552
 553    /* The checks below are also performed when merging but we want to spit an
 554     * error against the default global input qualifier as soon as we can, with
 555     * the closest error location in the shader.
 556     */
 557
 558    /* Input layout qualifiers can be specified multiple
 559     * times in separate declarations, as long as they match.
 560     */
 561    if (state->in_qualifier->flags.q.prim_type && this->flags.q.prim_type
 562        && state->in_qualifier->prim_type != this->prim_type) {
 563       r = false;
 564       _mesa_glsl_error(loc, state,
 565                        "conflicting input primitive %s specified",
 566                        state->stage == MESA_SHADER_GEOMETRY ?
 567                        "type" : "mode");
 568    }
 569
 570    if (state->in_qualifier->flags.q.vertex_spacing
 571        && this->flags.q.vertex_spacing
 572        && state->in_qualifier->vertex_spacing != this->vertex_spacing) {
 573       r = false;
 574       _mesa_glsl_error(loc, state,
 575                        "conflicting vertex spacing specified");
 576    }
 577
 578    if (state->in_qualifier->flags.q.ordering && this->flags.q.ordering
 579        && state->in_qualifier->ordering != this->ordering) {
 580       r = false;
 581       _mesa_glsl_error(loc, state,
 582                        "conflicting ordering specified");
 583    }
 584
 585    if (state->in_qualifier->flags.q.point_mode && this->flags.q.point_mode
 586        && state->in_qualifier->point_mode != this->point_mode) {
 587       r = false;
 588       _mesa_glsl_error(loc, state,
 589                        "conflicting point mode specified");
 590    }
 591
 592    return r;
 593 }
 594
 595 bool
 596 ast_type_qualifier::merge_into_in_qualifier(YYLTYPE *loc,
 597                                             _mesa_glsl_parse_state *state,
 598                                             ast_node* &node, bool create_node)
 599 {
 600    bool r = true;
 601    void *lin_ctx = state->linalloc;
 602
 603    /* We create the gs_input_layout node before merging so, in the future, no
 604     * more repeated nodes will be created as we will have the flag set.
 605     */
 606    if (state->stage == MESA_SHADER_GEOMETRY
 607        && this->flags.q.prim_type && !state->in_qualifier->flags.q.prim_type
 608        && create_node) {
 609       node = new(lin_ctx) ast_gs_input_layout(*loc, this->prim_type);
 610    }
 611
 612    r = state->in_qualifier->merge_qualifier(loc, state, *this, false);
 613
 614    if (state->in_qualifier->flags.q.early_fragment_tests) {
 615       state->fs_early_fragment_tests = true;
 616       state->in_qualifier->flags.q.early_fragment_tests = false;
 617    }
 618
 619    /* We allow the creation of multiple cs_input_layout nodes. Coherence among
 620     * all existing nodes is checked later, when the AST node is transformed
 621     * into HIR.
 622     */
 623    if (state->in_qualifier->flags.q.local_size) {
 624       if (create_node)
 625          node = new(lin_ctx) ast_cs_input_layout(*loc, state->in_qualifier->local_size);
 626       state->in_qualifier->flags.q.local_size = 0;
 627       for (int i = 0; i < 3; i++)
 628          state->in_qualifier->local_size[i] = NULL;
 629    }
 630
 631    if (state->in_qualifier->flags.q.local_size_variable) {
 632       state->cs_input_local_size_variable_specified = true;
 633       state->in_qualifier->flags.q.local_size_variable = false;
 634    }
 635
 636    return r;
 637 }
 638
 639 /**
 640  * Check if the current type qualifier has any illegal flags.
 641  *
 642  * If so, print an error message, followed by a list of illegal flags.
 643  *
 644  * \param message        The error message to print.
 645  * \param allowed_flags  A list of valid flags.
 646  */
 647 bool
 648 ast_type_qualifier::validate_flags(YYLTYPE *loc,
 649                                    _mesa_glsl_parse_state *state,
 650                                    const ast_type_qualifier &allowed_flags,
 651                                    const char *message, const char *name)
 652 {
 653    ast_type_qualifier bad;
 654    bad.flags.i = this->flags.i & ~allowed_flags.flags.i;
 655    if (bad.flags.i == 0)
 656       return true;
 657
 658    _mesa_glsl_error(loc, state,
 659                     "%s '%s':"
 660                     "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s"
 661                     "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s"
 662                     "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
 663                     message, name,
 664                     bad.flags.q.invariant ? " invariant" : "",
 665                     bad.flags.q.precise ? " precise" : "",
 666                     bad.flags.q.constant ? " constant" : "",
 667                     bad.flags.q.attribute ? " attribute" : "",
 668                     bad.flags.q.varying ? " varying" : "",
 669                     bad.flags.q.in ? " in" : "",
 670                     bad.flags.q.out ? " out" : "",
 671                     bad.flags.q.centroid ? " centroid" : "",
 672                     bad.flags.q.sample ? " sample" : "",
 673                     bad.flags.q.patch ? " patch" : "",
 674                     bad.flags.q.uniform ? " uniform" : "",
 675                     bad.flags.q.buffer ? " buffer" : "",
 676                     bad.flags.q.shared_storage ? " shared_storage" : "",
 677                     bad.flags.q.smooth ? " smooth" : "",
 678                     bad.flags.q.flat ? " flat" : "",
 679                     bad.flags.q.noperspective ? " noperspective" : "",
 680                     bad.flags.q.origin_upper_left ? " origin_upper_left" : "",
 681                     bad.flags.q.pixel_center_integer ? " pixel_center_integer" : "",
 682                     bad.flags.q.explicit_align ? " align" : "",
 683                     bad.flags.q.explicit_component ? " component" : "",
 684                     bad.flags.q.explicit_location ? " location" : "",
 685                     bad.flags.q.explicit_index ? " index" : "",
 686                     bad.flags.q.explicit_binding ? " binding" : "",
 687                     bad.flags.q.explicit_offset ? " offset" : "",
 688                     bad.flags.q.depth_any ? " depth_any" : "",
 689                     bad.flags.q.depth_greater ? " depth_greater" : "",
 690                     bad.flags.q.depth_less ? " depth_less" : "",
 691                     bad.flags.q.depth_unchanged ? " depth_unchanged" : "",
 692                     bad.flags.q.std140 ? " std140" : "",
 693                     bad.flags.q.std430 ? " std430" : "",
 694                     bad.flags.q.shared ? " shared" : "",
 695                     bad.flags.q.packed ? " packed" : "",
 696                     bad.flags.q.column_major ? " column_major" : "",
 697                     bad.flags.q.row_major ? " row_major" : "",
 698                     bad.flags.q.prim_type ? " prim_type" : "",
 699                     bad.flags.q.max_vertices ? " max_vertices" : "",
 700                     bad.flags.q.local_size ? " local_size" : "",
 701                     bad.flags.q.local_size_variable ? " local_size_variable" : "",
 702                     bad.flags.q.early_fragment_tests ? " early_fragment_tests" : "",
 703                     bad.flags.q.explicit_image_format ? " image_format" : "",
 704                     bad.flags.q.coherent ? " coherent" : "",
 705                     bad.flags.q._volatile ? " _volatile" : "",
 706                     bad.flags.q.restrict_flag ? " restrict_flag" : "",
 707                     bad.flags.q.read_only ? " read_only" : "",
 708                     bad.flags.q.write_only ? " write_only" : "",
 709                     bad.flags.q.invocations ? " invocations" : "",
 710                     bad.flags.q.stream ? " stream" : "",
 711                     bad.flags.q.explicit_stream ? " stream" : "",
 712                     bad.flags.q.explicit_xfb_offset ? " xfb_offset" : "",
 713                     bad.flags.q.xfb_buffer ? " xfb_buffer" : "",
 714                     bad.flags.q.explicit_xfb_buffer ? " xfb_buffer" : "",
 715                     bad.flags.q.xfb_stride ? " xfb_stride" : "",
 716                     bad.flags.q.explicit_xfb_stride ? " xfb_stride" : "",
 717                     bad.flags.q.vertex_spacing ? " vertex_spacing" : "",
 718                     bad.flags.q.ordering ? " ordering" : "",
 719                     bad.flags.q.point_mode ? " point_mode" : "",
 720                     bad.flags.q.vertices ? " vertices" : "",
 721                     bad.flags.q.subroutine ? " subroutine" : "",
 722                     bad.flags.q.subroutine_def ? " subroutine_def" : "");
 723    return false;
 724 }
 725
 726 bool
 727 ast_layout_expression::process_qualifier_constant(struct _mesa_glsl_parse_state *state,
 728                                                   const char *qual_indentifier,
 729                                                   unsigned *value,
 730                                                   bool can_be_zero,
 731                                                   bool must_match)
 732 {
 733    int min_value = 0;
 734    bool first_pass = true;
 735    *value = 0;
 736
 737    if (!can_be_zero)
 738       min_value = 1;
 739
 740    for (exec_node *node = layout_const_expressions.get_head_raw();
 741         !node->is_tail_sentinel(); node = node->next) {
 742
 743       exec_list dummy_instructions;
 744       ast_node *const_expression = exec_node_data(ast_node, node, link);
 745
 746       ir_rvalue *const ir = const_expression->hir(&dummy_instructions, state);
 747
 748       ir_constant *const const_int = ir->constant_expression_value();
 749       if (const_int == NULL || !const_int->type->is_integer()) {
 750          YYLTYPE loc = const_expression->get_location();
 751          _mesa_glsl_error(&loc, state, "%s must be an integral constant "
 752                           "expression", qual_indentifier);
 753          return false;
 754       }
 755
 756       if (const_int->value.i[0] < min_value) {
 757          YYLTYPE loc = const_expression->get_location();
 758          _mesa_glsl_error(&loc, state, "%s layout qualifier is invalid "
 759                           "(%d < %d)", qual_indentifier,
 760                           const_int->value.i[0], min_value);
 761          return false;
 762       }
 763
 764       /* From section 4.4 "Layout Qualifiers" of the GLSL 4.50 spec:
 765        * "When the same layout-qualifier-name occurs multiple times,
 766        *  in a single declaration, the last occurrence overrides the
 767        *  former occurrence(s)."
 768        */
 769       if (!first_pass) {
 770          if ((must_match || !state->has_420pack()) && *value != const_int->value.u[0]) {
 771             YYLTYPE loc = const_expression->get_location();
 772             _mesa_glsl_error(&loc, state, "%s layout qualifier does not "
 773                              "match previous declaration (%d vs %d)",
 774                              qual_indentifier, *value, const_int->value.i[0]);
 775             return false;
 776          }
 777       } else {
 778          first_pass = false;
 779          *value = const_int->value.u[0];
 780       }
 781
 782       /* If the location is const (and we've verified that
 783        * it is) then no instructions should have been emitted
 784        * when we converted it to HIR. If they were emitted,
 785        * then either the location isn't const after all, or
 786        * we are emitting unnecessary instructions.
 787        */
 788       assert(dummy_instructions.is_empty());
 789    }
 790
 791    return true;
 792 }
 793
 794 bool
 795 process_qualifier_constant(struct _mesa_glsl_parse_state *state,
 796                            YYLTYPE *loc,
 797                            const char *qual_indentifier,
 798                            ast_expression *const_expression,
 799                            unsigned *value)
 800 {
 801    exec_list dummy_instructions;
 802
 803    if (const_expression == NULL) {
 804       *value = 0;
 805       return true;
 806    }
 807
 808    ir_rvalue *const ir = const_expression->hir(&dummy_instructions, state);
 809
 810    ir_constant *const const_int = ir->constant_expression_value();
 811    if (const_int == NULL || !const_int->type->is_integer()) {
 812       _mesa_glsl_error(loc, state, "%s must be an integral constant "
 813                        "expression", qual_indentifier);
 814       return false;
 815    }
 816
 817    if (const_int->value.i[0] < 0) {
 818       _mesa_glsl_error(loc, state, "%s layout qualifier is invalid (%d < 0)",
 819                        qual_indentifier, const_int->value.u[0]);
 820       return false;
 821    }
 822
 823    /* If the location is const (and we've verified that
 824     * it is) then no instructions should have been emitted
 825     * when we converted it to HIR. If they were emitted,
 826     * then either the location isn't const after all, or
 827     * we are emitting unnecessary instructions.
 828     */
 829    assert(dummy_instructions.is_empty());
 830
 831    *value = const_int->value.u[0];
 832    return true;
 833 }