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    if (state->has_explicit_uniform_location()) {
  48       subroutine_only.flags.q.explicit_index = 1;
  49    }
  50    return (this->qualifier.flags.i & ~subroutine_only.flags.i) != 0;
  51 }
  52
  53 bool ast_type_qualifier::has_interpolation() const
  54 {
  55    return this->flags.q.smooth
  56           || this->flags.q.flat
  57           || this->flags.q.noperspective;
  58 }
  59
  60 bool
  61 ast_type_qualifier::has_layout() const
  62 {
  63    return this->flags.q.origin_upper_left
  64           || this->flags.q.pixel_center_integer
  65           || this->flags.q.depth_type
  66           || this->flags.q.std140
  67           || this->flags.q.std430
  68           || this->flags.q.shared
  69           || this->flags.q.column_major
  70           || this->flags.q.row_major
  71           || this->flags.q.packed
  72           || this->flags.q.bindless_sampler
  73           || this->flags.q.bindless_image
  74           || this->flags.q.bound_sampler
  75           || this->flags.q.bound_image
  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 bool ast_type_qualifier::is_subroutine_decl() const
 120 {
 121    return this->flags.q.subroutine && !this->subroutine_list;
 122 }
 123
 124 static bool
 125 validate_prim_type(YYLTYPE *loc,
 126                    _mesa_glsl_parse_state *state,
 127                    const ast_type_qualifier &qualifier,
 128                    const ast_type_qualifier &new_qualifier)
 129 {
 130    /* Input layout qualifiers can be specified multiple
 131     * times in separate declarations, as long as they match.
 132     */
 133    if (qualifier.flags.q.prim_type && new_qualifier.flags.q.prim_type
 134        && qualifier.prim_type != new_qualifier.prim_type) {
 135       _mesa_glsl_error(loc, state,
 136                        "conflicting input primitive %s specified",
 137                        state->stage == MESA_SHADER_GEOMETRY ?
 138                        "type" : "mode");
 139       return false;
 140    }
 141
 142    return true;
 143 }
 144
 145 static bool
 146 validate_vertex_spacing(YYLTYPE *loc,
 147                         _mesa_glsl_parse_state *state,
 148                         const ast_type_qualifier &qualifier,
 149                         const ast_type_qualifier &new_qualifier)
 150 {
 151    if (qualifier.flags.q.vertex_spacing && new_qualifier.flags.q.vertex_spacing
 152        && qualifier.vertex_spacing != new_qualifier.vertex_spacing) {
 153       _mesa_glsl_error(loc, state,
 154                        "conflicting vertex spacing specified");
 155       return false;
 156    }
 157
 158    return true;
 159 }
 160
 161 static bool
 162 validate_ordering(YYLTYPE *loc,
 163                   _mesa_glsl_parse_state *state,
 164                   const ast_type_qualifier &qualifier,
 165                   const ast_type_qualifier &new_qualifier)
 166 {
 167    if (qualifier.flags.q.ordering && new_qualifier.flags.q.ordering
 168        && qualifier.ordering != new_qualifier.ordering) {
 169       _mesa_glsl_error(loc, state,
 170                        "conflicting ordering specified");
 171       return false;
 172    }
 173
 174    return true;
 175 }
 176
 177 static bool
 178 validate_point_mode(MAYBE_UNUSED const ast_type_qualifier &qualifier,
 179                     MAYBE_UNUSED const ast_type_qualifier &new_qualifier)
 180 {
 181    /* Point mode can only be true if the flag is set. */
 182    assert (!qualifier.flags.q.point_mode || !new_qualifier.flags.q.point_mode
 183            || (qualifier.point_mode && new_qualifier.point_mode));
 184
 185    return true;
 186 }
 187
 188 static void
 189 merge_bindless_qualifier(YYLTYPE *loc,
 190                          _mesa_glsl_parse_state *state,
 191                          const ast_type_qualifier &qualifier,
 192                          const ast_type_qualifier &new_qualifier)
 193 {
 194    if (state->default_uniform_qualifier->flags.q.bindless_sampler) {
 195       state->bindless_sampler_specified = true;
 196       state->default_uniform_qualifier->flags.q.bindless_sampler = false;
 197    }
 198
 199    if (state->default_uniform_qualifier->flags.q.bindless_image) {
 200       state->bindless_image_specified = true;
 201       state->default_uniform_qualifier->flags.q.bindless_image = false;
 202    }
 203
 204    if (state->default_uniform_qualifier->flags.q.bound_sampler) {
 205       state->bound_sampler_specified = true;
 206       state->default_uniform_qualifier->flags.q.bound_sampler = false;
 207    }
 208
 209    if (state->default_uniform_qualifier->flags.q.bound_image) {
 210       state->bound_image_specified = true;
 211       state->default_uniform_qualifier->flags.q.bound_image = false;
 212    }
 213 }
 214
 215 /**
 216  * This function merges duplicate layout identifiers.
 217  *
 218  * It deals with duplicates within a single layout qualifier, among multiple
 219  * layout qualifiers on a single declaration and on several declarations for
 220  * the same variable.
 221  *
 222  * The is_single_layout_merge and is_multiple_layouts_merge parameters are
 223  * used to differentiate among them.
 224  */
 225 bool
 226 ast_type_qualifier::merge_qualifier(YYLTYPE *loc,
 227                                     _mesa_glsl_parse_state *state,
 228                                     const ast_type_qualifier &q,
 229                                     bool is_single_layout_merge,
 230                                     bool is_multiple_layouts_merge)
 231 {
 232    bool r = true;
 233    ast_type_qualifier ubo_mat_mask;
 234    ubo_mat_mask.flags.i = 0;
 235    ubo_mat_mask.flags.q.row_major = 1;
 236    ubo_mat_mask.flags.q.column_major = 1;
 237
 238    ast_type_qualifier ubo_layout_mask;
 239    ubo_layout_mask.flags.i = 0;
 240    ubo_layout_mask.flags.q.std140 = 1;
 241    ubo_layout_mask.flags.q.packed = 1;
 242    ubo_layout_mask.flags.q.shared = 1;
 243    ubo_layout_mask.flags.q.std430 = 1;
 244
 245    ast_type_qualifier ubo_binding_mask;
 246    ubo_binding_mask.flags.i = 0;
 247    ubo_binding_mask.flags.q.explicit_binding = 1;
 248    ubo_binding_mask.flags.q.explicit_offset = 1;
 249
 250    ast_type_qualifier stream_layout_mask;
 251    stream_layout_mask.flags.i = 0;
 252    stream_layout_mask.flags.q.stream = 1;
 253
 254    /* FIXME: We should probably do interface and function param validation
 255     * separately.
 256     */
 257    ast_type_qualifier input_layout_mask;
 258    input_layout_mask.flags.i = 0;
 259    input_layout_mask.flags.q.centroid = 1;
 260    /* Function params can have constant */
 261    input_layout_mask.flags.q.constant = 1;
 262    input_layout_mask.flags.q.explicit_component = 1;
 263    input_layout_mask.flags.q.explicit_location = 1;
 264    input_layout_mask.flags.q.flat = 1;
 265    input_layout_mask.flags.q.in = 1;
 266    input_layout_mask.flags.q.invariant = 1;
 267    input_layout_mask.flags.q.noperspective = 1;
 268    input_layout_mask.flags.q.origin_upper_left = 1;
 269    /* Function params 'inout' will set this */
 270    input_layout_mask.flags.q.out = 1;
 271    input_layout_mask.flags.q.patch = 1;
 272    input_layout_mask.flags.q.pixel_center_integer = 1;
 273    input_layout_mask.flags.q.precise = 1;
 274    input_layout_mask.flags.q.sample = 1;
 275    input_layout_mask.flags.q.smooth = 1;
 276
 277    if (state->has_bindless()) {
 278       /* Allow to use image qualifiers with shader inputs/outputs. */
 279       input_layout_mask.flags.q.coherent = 1;
 280       input_layout_mask.flags.q._volatile = 1;
 281       input_layout_mask.flags.q.restrict_flag = 1;
 282       input_layout_mask.flags.q.read_only = 1;
 283       input_layout_mask.flags.q.write_only = 1;
 284       input_layout_mask.flags.q.explicit_image_format = 1;
 285    }
 286
 287    /* Uniform block layout qualifiers get to overwrite each
 288     * other (rightmost having priority), while all other
 289     * qualifiers currently don't allow duplicates.
 290     */
 291    ast_type_qualifier allowed_duplicates_mask;
 292    allowed_duplicates_mask.flags.i =
 293       ubo_mat_mask.flags.i |
 294       ubo_layout_mask.flags.i |
 295       ubo_binding_mask.flags.i;
 296
 297    /* Geometry shaders can have several layout qualifiers
 298     * assigning different stream values.
 299     */
 300    if (state->stage == MESA_SHADER_GEOMETRY) {
 301       allowed_duplicates_mask.flags.i |=
 302          stream_layout_mask.flags.i;
 303    }
 304
 305    if (is_single_layout_merge && !state->has_enhanced_layouts() &&
 306        (this->flags.i & q.flags.i & ~allowed_duplicates_mask.flags.i) != 0) {
 307       _mesa_glsl_error(loc, state, "duplicate layout qualifiers used");
 308       return false;
 309    }
 310
 311    if (is_multiple_layouts_merge && !state->has_420pack_or_es31()) {
 312       _mesa_glsl_error(loc, state,
 313                        "duplicate layout(...) qualifiers");
 314       return false;
 315    }
 316
 317    if (q.flags.q.prim_type) {
 318       r &= validate_prim_type(loc, state, *this, q);
 319       this->flags.q.prim_type = 1;
 320       this->prim_type = q.prim_type;
 321    }
 322
 323    if (q.flags.q.max_vertices) {
 324       if (this->flags.q.max_vertices
 325           && !is_single_layout_merge && !is_multiple_layouts_merge) {
 326          this->max_vertices->merge_qualifier(q.max_vertices);
 327       } else {
 328          this->flags.q.max_vertices = 1;
 329          this->max_vertices = q.max_vertices;
 330       }
 331    }
 332
 333    if (q.subroutine_list) {
 334       if (this->subroutine_list) {
 335          _mesa_glsl_error(loc, state,
 336                           "conflicting subroutine qualifiers used");
 337       } else {
 338          this->subroutine_list = q.subroutine_list;
 339       }
 340    }
 341
 342    if (q.flags.q.invocations) {
 343       if (this->flags.q.invocations
 344           && !is_single_layout_merge && !is_multiple_layouts_merge) {
 345          this->invocations->merge_qualifier(q.invocations);
 346       } else {
 347          this->flags.q.invocations = 1;
 348          this->invocations = q.invocations;
 349       }
 350    }
 351
 352    if (state->stage == MESA_SHADER_GEOMETRY &&
 353        state->has_explicit_attrib_stream()) {
 354       if (!this->flags.q.explicit_stream) {
 355          if (q.flags.q.stream) {
 356             this->flags.q.stream = 1;
 357             this->stream = q.stream;
 358          } else if (!this->flags.q.stream && this->flags.q.out &&
 359                     !this->flags.q.in) {
 360             /* Assign default global stream value */
 361             this->flags.q.stream = 1;
 362             this->stream = state->out_qualifier->stream;
 363          }
 364       }
 365    }
 366
 367    if (state->has_enhanced_layouts()) {
 368       if (!this->flags.q.explicit_xfb_buffer) {
 369          if (q.flags.q.xfb_buffer) {
 370             this->flags.q.xfb_buffer = 1;
 371             this->xfb_buffer = q.xfb_buffer;
 372          } else if (!this->flags.q.xfb_buffer && this->flags.q.out &&
 373                     !this->flags.q.in) {
 374             /* Assign global xfb_buffer value */
 375             this->flags.q.xfb_buffer = 1;
 376             this->xfb_buffer = state->out_qualifier->xfb_buffer;
 377          }
 378       }
 379
 380       if (q.flags.q.explicit_xfb_stride) {
 381          this->flags.q.xfb_stride = 1;
 382          this->flags.q.explicit_xfb_stride = 1;
 383          this->xfb_stride = q.xfb_stride;
 384       }
 385    }
 386
 387    if (q.flags.q.vertices) {
 388       if (this->flags.q.vertices
 389           && !is_single_layout_merge && !is_multiple_layouts_merge) {
 390          this->vertices->merge_qualifier(q.vertices);
 391       } else {
 392          this->flags.q.vertices = 1;
 393          this->vertices = q.vertices;
 394       }
 395    }
 396
 397    if (q.flags.q.vertex_spacing) {
 398       r &= validate_vertex_spacing(loc, state, *this, q);
 399       this->flags.q.vertex_spacing = 1;
 400       this->vertex_spacing = q.vertex_spacing;
 401    }
 402
 403    if (q.flags.q.ordering) {
 404       r &= validate_ordering(loc, state, *this, q);
 405       this->flags.q.ordering = 1;
 406       this->ordering = q.ordering;
 407    }
 408
 409    if (q.flags.q.point_mode) {
 410       r &= validate_point_mode(*this, q);
 411       this->flags.q.point_mode = 1;
 412       this->point_mode = q.point_mode;
 413    }
 414
 415    if (q.flags.q.early_fragment_tests)
 416       this->flags.q.early_fragment_tests = true;
 417
 418    if ((q.flags.i & ubo_mat_mask.flags.i) != 0)
 419       this->flags.i &= ~ubo_mat_mask.flags.i;
 420    if ((q.flags.i & ubo_layout_mask.flags.i) != 0)
 421       this->flags.i &= ~ubo_layout_mask.flags.i;
 422
 423    for (int i = 0; i < 3; i++) {
 424       if (q.flags.q.local_size & (1 << i)) {
 425          if (this->local_size[i]
 426              && !is_single_layout_merge && !is_multiple_layouts_merge) {
 427             this->local_size[i]->merge_qualifier(q.local_size[i]);
 428          } else {
 429             this->local_size[i] = q.local_size[i];
 430          }
 431       }
 432    }
 433
 434    if (q.flags.q.local_size_variable)
 435       this->flags.q.local_size_variable = true;
 436
 437    if (q.flags.q.bindless_sampler)
 438       this->flags.q.bindless_sampler = true;
 439
 440    if (q.flags.q.bindless_image)
 441       this->flags.q.bindless_image = true;
 442
 443    if (q.flags.q.bound_sampler)
 444       this->flags.q.bound_sampler = true;
 445
 446    if (q.flags.q.bound_image)
 447       this->flags.q.bound_image = true;
 448
 449    this->flags.i |= q.flags.i;
 450
 451    if (this->flags.q.in &&
 452        (this->flags.i & ~input_layout_mask.flags.i) != 0) {
 453       _mesa_glsl_error(loc, state, "invalid input layout qualifier used");
 454       return false;
 455    }
 456
 457    if (q.flags.q.explicit_align)
 458       this->align = q.align;
 459
 460    if (q.flags.q.explicit_location)
 461       this->location = q.location;
 462
 463    if (q.flags.q.explicit_index)
 464       this->index = q.index;
 465
 466   if (q.flags.q.explicit_component)
 467       this->component = q.component;
 468
 469    if (q.flags.q.explicit_binding)
 470       this->binding = q.binding;
 471
 472    if (q.flags.q.explicit_offset || q.flags.q.explicit_xfb_offset)
 473       this->offset = q.offset;
 474
 475    if (q.precision != ast_precision_none)
 476       this->precision = q.precision;
 477
 478    if (q.flags.q.explicit_image_format) {
 479       this->image_format = q.image_format;
 480       this->image_base_type = q.image_base_type;
 481    }
 482
 483    if (q.flags.q.bindless_sampler ||
 484        q.flags.q.bindless_image ||
 485        q.flags.q.bound_sampler ||
 486        q.flags.q.bound_image)
 487       merge_bindless_qualifier(loc, state, *this, q);
 488
 489    return r;
 490 }
 491
 492 bool
 493 ast_type_qualifier::validate_out_qualifier(YYLTYPE *loc,
 494                                            _mesa_glsl_parse_state *state)
 495 {
 496    bool r = true;
 497    ast_type_qualifier valid_out_mask;
 498    valid_out_mask.flags.i = 0;
 499
 500    switch (state->stage) {
 501    case MESA_SHADER_GEOMETRY:
 502       if (this->flags.q.prim_type) {
 503          /* Make sure this is a valid output primitive type. */
 504          switch (this->prim_type) {
 505          case GL_POINTS:
 506          case GL_LINE_STRIP:
 507          case GL_TRIANGLE_STRIP:
 508             break;
 509          default:
 510             r = false;
 511             _mesa_glsl_error(loc, state, "invalid geometry shader output "
 512                              "primitive type");
 513             break;
 514          }
 515       }
 516
 517       valid_out_mask.flags.q.stream = 1;
 518       valid_out_mask.flags.q.explicit_stream = 1;
 519       valid_out_mask.flags.q.explicit_xfb_buffer = 1;
 520       valid_out_mask.flags.q.xfb_buffer = 1;
 521       valid_out_mask.flags.q.explicit_xfb_stride = 1;
 522       valid_out_mask.flags.q.xfb_stride = 1;
 523       valid_out_mask.flags.q.max_vertices = 1;
 524       valid_out_mask.flags.q.prim_type = 1;
 525       break;
 526    case MESA_SHADER_TESS_CTRL:
 527       valid_out_mask.flags.q.vertices = 1;
 528       valid_out_mask.flags.q.explicit_xfb_buffer = 1;
 529       valid_out_mask.flags.q.xfb_buffer = 1;
 530       valid_out_mask.flags.q.explicit_xfb_stride = 1;
 531       valid_out_mask.flags.q.xfb_stride = 1;
 532       break;
 533    case MESA_SHADER_TESS_EVAL:
 534    case MESA_SHADER_VERTEX:
 535       valid_out_mask.flags.q.explicit_xfb_buffer = 1;
 536       valid_out_mask.flags.q.xfb_buffer = 1;
 537       valid_out_mask.flags.q.explicit_xfb_stride = 1;
 538       valid_out_mask.flags.q.xfb_stride = 1;
 539       break;
 540    case MESA_SHADER_FRAGMENT:
 541       valid_out_mask.flags.q.blend_support = 1;
 542       break;
 543    default:
 544       r = false;
 545       _mesa_glsl_error(loc, state,
 546                        "out layout qualifiers only valid in "
 547                        "geometry, tessellation, vertex and fragment shaders");
 548    }
 549
 550    /* Generate an error when invalid output layout qualifiers are used. */
 551    if ((this->flags.i & ~valid_out_mask.flags.i) != 0) {
 552       r = false;
 553       _mesa_glsl_error(loc, state, "invalid output layout qualifiers used");
 554    }
 555
 556    return r;
 557 }
 558
 559 bool
 560 ast_type_qualifier::merge_into_out_qualifier(YYLTYPE *loc,
 561                                              _mesa_glsl_parse_state *state,
 562                                              ast_node* &node)
 563 {
 564    const bool r = state->out_qualifier->merge_qualifier(loc, state,
 565                                                         *this, false);
 566
 567    switch (state->stage) {
 568    case MESA_SHADER_GEOMETRY:
 569       /* Allow future assignments of global out's stream id value */
 570       state->out_qualifier->flags.q.explicit_stream = 0;
 571       break;
 572    case MESA_SHADER_TESS_CTRL:
 573       node = new(state->linalloc) ast_tcs_output_layout(*loc);
 574       break;
 575    default:
 576       break;
 577    }
 578
 579    /* Allow future assignments of global out's */
 580    state->out_qualifier->flags.q.explicit_xfb_buffer = 0;
 581    state->out_qualifier->flags.q.explicit_xfb_stride = 0;
 582
 583    return r;
 584 }
 585
 586 bool
 587 ast_type_qualifier::validate_in_qualifier(YYLTYPE *loc,
 588                                           _mesa_glsl_parse_state *state)
 589 {
 590    bool r = true;
 591    ast_type_qualifier valid_in_mask;
 592    valid_in_mask.flags.i = 0;
 593
 594    switch (state->stage) {
 595    case MESA_SHADER_TESS_EVAL:
 596       if (this->flags.q.prim_type) {
 597          /* Make sure this is a valid input primitive type. */
 598          switch (this->prim_type) {
 599          case GL_TRIANGLES:
 600          case GL_QUADS:
 601          case GL_ISOLINES:
 602             break;
 603          default:
 604             r = false;
 605             _mesa_glsl_error(loc, state,
 606                              "invalid tessellation evaluation "
 607                              "shader input primitive type");
 608             break;
 609          }
 610       }
 611
 612       valid_in_mask.flags.q.prim_type = 1;
 613       valid_in_mask.flags.q.vertex_spacing = 1;
 614       valid_in_mask.flags.q.ordering = 1;
 615       valid_in_mask.flags.q.point_mode = 1;
 616       break;
 617    case MESA_SHADER_GEOMETRY:
 618       if (this->flags.q.prim_type) {
 619          /* Make sure this is a valid input primitive type. */
 620          switch (this->prim_type) {
 621          case GL_POINTS:
 622          case GL_LINES:
 623          case GL_LINES_ADJACENCY:
 624          case GL_TRIANGLES:
 625          case GL_TRIANGLES_ADJACENCY:
 626             break;
 627          default:
 628             r = false;
 629             _mesa_glsl_error(loc, state,
 630                              "invalid geometry shader input primitive type");
 631             break;
 632          }
 633       }
 634
 635       valid_in_mask.flags.q.prim_type = 1;
 636       valid_in_mask.flags.q.invocations = 1;
 637       break;
 638    case MESA_SHADER_FRAGMENT:
 639       valid_in_mask.flags.q.early_fragment_tests = 1;
 640       valid_in_mask.flags.q.inner_coverage = 1;
 641       valid_in_mask.flags.q.post_depth_coverage = 1;
 642       break;
 643    case MESA_SHADER_COMPUTE:
 644       valid_in_mask.flags.q.local_size = 7;
 645       valid_in_mask.flags.q.local_size_variable = 1;
 646       break;
 647    default:
 648       r = false;
 649       _mesa_glsl_error(loc, state,
 650                        "input layout qualifiers only valid in "
 651                        "geometry, tessellation, fragment and compute shaders");
 652       break;
 653    }
 654
 655    /* Generate an error when invalid input layout qualifiers are used. */
 656    if ((this->flags.i & ~valid_in_mask.flags.i) != 0) {
 657       r = false;
 658       _mesa_glsl_error(loc, state, "invalid input layout qualifiers used");
 659    }
 660
 661    /* The checks below are also performed when merging but we want to spit an
 662     * error against the default global input qualifier as soon as we can, with
 663     * the closest error location in the shader.
 664     */
 665    r &= validate_prim_type(loc, state, *state->in_qualifier, *this);
 666    r &= validate_vertex_spacing(loc, state, *state->in_qualifier, *this);
 667    r &= validate_ordering(loc, state, *state->in_qualifier, *this);
 668    r &= validate_point_mode(*state->in_qualifier, *this);
 669
 670    return r;
 671 }
 672
 673 bool
 674 ast_type_qualifier::merge_into_in_qualifier(YYLTYPE *loc,
 675                                             _mesa_glsl_parse_state *state,
 676                                             ast_node* &node)
 677 {
 678    bool r = true;
 679    void *lin_ctx = state->linalloc;
 680
 681    /* We create the gs_input_layout node before merging so, in the future, no
 682     * more repeated nodes will be created as we will have the flag set.
 683     */
 684    if (state->stage == MESA_SHADER_GEOMETRY
 685        && this->flags.q.prim_type && !state->in_qualifier->flags.q.prim_type) {
 686       node = new(lin_ctx) ast_gs_input_layout(*loc, this->prim_type);
 687    }
 688
 689    r = state->in_qualifier->merge_qualifier(loc, state, *this, false);
 690
 691    if (state->in_qualifier->flags.q.early_fragment_tests) {
 692       state->fs_early_fragment_tests = true;
 693       state->in_qualifier->flags.q.early_fragment_tests = false;
 694    }
 695
 696    if (state->in_qualifier->flags.q.inner_coverage) {
 697       state->fs_inner_coverage = true;
 698       state->in_qualifier->flags.q.inner_coverage = false;
 699    }
 700
 701    if (state->in_qualifier->flags.q.post_depth_coverage) {
 702       state->fs_post_depth_coverage = true;
 703       state->in_qualifier->flags.q.post_depth_coverage = false;
 704    }
 705
 706    if (state->fs_inner_coverage && state->fs_post_depth_coverage) {
 707       _mesa_glsl_error(loc, state,
 708                        "inner_coverage & post_depth_coverage layout qualifiers "
 709                        "are mutally exclusives");
 710       r = false;
 711    }
 712
 713    /* We allow the creation of multiple cs_input_layout nodes. Coherence among
 714     * all existing nodes is checked later, when the AST node is transformed
 715     * into HIR.
 716     */
 717    if (state->in_qualifier->flags.q.local_size) {
 718       node = new(lin_ctx) ast_cs_input_layout(*loc,
 719                                               state->in_qualifier->local_size);
 720       state->in_qualifier->flags.q.local_size = 0;
 721       for (int i = 0; i < 3; i++)
 722          state->in_qualifier->local_size[i] = NULL;
 723    }
 724
 725    if (state->in_qualifier->flags.q.local_size_variable) {
 726       state->cs_input_local_size_variable_specified = true;
 727       state->in_qualifier->flags.q.local_size_variable = false;
 728    }
 729
 730    return r;
 731 }
 732
 733 bool
 734 ast_type_qualifier::push_to_global(YYLTYPE *loc,
 735                                    _mesa_glsl_parse_state *state)
 736 {
 737    if (this->flags.q.xfb_stride) {
 738       this->flags.q.xfb_stride = 0;
 739
 740       unsigned buff_idx;
 741       if (process_qualifier_constant(state, loc, "xfb_buffer",
 742                                      this->xfb_buffer, &buff_idx)) {
 743          if (state->out_qualifier->out_xfb_stride[buff_idx]) {
 744             state->out_qualifier->out_xfb_stride[buff_idx]->merge_qualifier(
 745                new(state->linalloc) ast_layout_expression(*loc,
 746                                                           this->xfb_stride));
 747          } else {
 748             state->out_qualifier->out_xfb_stride[buff_idx] =
 749                new(state->linalloc) ast_layout_expression(*loc,
 750                                                           this->xfb_stride);
 751          }
 752       }
 753    }
 754
 755    return true;
 756 }
 757
 758 /**
 759  * Check if the current type qualifier has any illegal flags.
 760  *
 761  * If so, print an error message, followed by a list of illegal flags.
 762  *
 763  * \param message        The error message to print.
 764  * \param allowed_flags  A list of valid flags.
 765  */
 766 bool
 767 ast_type_qualifier::validate_flags(YYLTYPE *loc,
 768                                    _mesa_glsl_parse_state *state,
 769                                    const ast_type_qualifier &allowed_flags,
 770                                    const char *message, const char *name)
 771 {
 772    ast_type_qualifier bad;
 773    bad.flags.i = this->flags.i & ~allowed_flags.flags.i;
 774    if (bad.flags.i == 0)
 775       return true;
 776
 777    _mesa_glsl_error(loc, state,
 778                     "%s '%s':"
 779                     "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s"
 780                     "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s"
 781                     "%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
 782                     message, name,
 783                     bad.flags.q.invariant ? " invariant" : "",
 784                     bad.flags.q.precise ? " precise" : "",
 785                     bad.flags.q.constant ? " constant" : "",
 786                     bad.flags.q.attribute ? " attribute" : "",
 787                     bad.flags.q.varying ? " varying" : "",
 788                     bad.flags.q.in ? " in" : "",
 789                     bad.flags.q.out ? " out" : "",
 790                     bad.flags.q.centroid ? " centroid" : "",
 791                     bad.flags.q.sample ? " sample" : "",
 792                     bad.flags.q.patch ? " patch" : "",
 793                     bad.flags.q.uniform ? " uniform" : "",
 794                     bad.flags.q.buffer ? " buffer" : "",
 795                     bad.flags.q.shared_storage ? " shared_storage" : "",
 796                     bad.flags.q.smooth ? " smooth" : "",
 797                     bad.flags.q.flat ? " flat" : "",
 798                     bad.flags.q.noperspective ? " noperspective" : "",
 799                     bad.flags.q.origin_upper_left ? " origin_upper_left" : "",
 800                     bad.flags.q.pixel_center_integer ? " pixel_center_integer" : "",
 801                     bad.flags.q.explicit_align ? " align" : "",
 802                     bad.flags.q.explicit_component ? " component" : "",
 803                     bad.flags.q.explicit_location ? " location" : "",
 804                     bad.flags.q.explicit_index ? " index" : "",
 805                     bad.flags.q.explicit_binding ? " binding" : "",
 806                     bad.flags.q.explicit_offset ? " offset" : "",
 807                     bad.flags.q.depth_type ? " depth_type" : "",
 808                     bad.flags.q.std140 ? " std140" : "",
 809                     bad.flags.q.std430 ? " std430" : "",
 810                     bad.flags.q.shared ? " shared" : "",
 811                     bad.flags.q.packed ? " packed" : "",
 812                     bad.flags.q.column_major ? " column_major" : "",
 813                     bad.flags.q.row_major ? " row_major" : "",
 814                     bad.flags.q.prim_type ? " prim_type" : "",
 815                     bad.flags.q.max_vertices ? " max_vertices" : "",
 816                     bad.flags.q.local_size ? " local_size" : "",
 817                     bad.flags.q.local_size_variable ? " local_size_variable" : "",
 818                     bad.flags.q.early_fragment_tests ? " early_fragment_tests" : "",
 819                     bad.flags.q.explicit_image_format ? " image_format" : "",
 820                     bad.flags.q.coherent ? " coherent" : "",
 821                     bad.flags.q._volatile ? " _volatile" : "",
 822                     bad.flags.q.restrict_flag ? " restrict_flag" : "",
 823                     bad.flags.q.read_only ? " read_only" : "",
 824                     bad.flags.q.write_only ? " write_only" : "",
 825                     bad.flags.q.invocations ? " invocations" : "",
 826                     bad.flags.q.stream ? " stream" : "",
 827                     bad.flags.q.explicit_stream ? " stream" : "",
 828                     bad.flags.q.explicit_xfb_offset ? " xfb_offset" : "",
 829                     bad.flags.q.xfb_buffer ? " xfb_buffer" : "",
 830                     bad.flags.q.explicit_xfb_buffer ? " xfb_buffer" : "",
 831                     bad.flags.q.xfb_stride ? " xfb_stride" : "",
 832                     bad.flags.q.explicit_xfb_stride ? " xfb_stride" : "",
 833                     bad.flags.q.vertex_spacing ? " vertex_spacing" : "",
 834                     bad.flags.q.ordering ? " ordering" : "",
 835                     bad.flags.q.point_mode ? " point_mode" : "",
 836                     bad.flags.q.vertices ? " vertices" : "",
 837                     bad.flags.q.subroutine ? " subroutine" : "",
 838                     bad.flags.q.blend_support ? " blend_support" : "",
 839                     bad.flags.q.inner_coverage ? " inner_coverage" : "",
 840                     bad.flags.q.bindless_sampler ? " bindless_sampler" : "",
 841                     bad.flags.q.bindless_image ? " bindless_image" : "",
 842                     bad.flags.q.bound_sampler ? " bound_sampler" : "",
 843                     bad.flags.q.bound_image ? " bound_image" : "",
 844                     bad.flags.q.post_depth_coverage ? " post_depth_coverage" : "");
 845    return false;
 846 }
 847
 848 bool
 849 ast_layout_expression::process_qualifier_constant(struct _mesa_glsl_parse_state *state,
 850                                                   const char *qual_indentifier,
 851                                                   unsigned *value,
 852                                                   bool can_be_zero)
 853 {
 854    int min_value = 0;
 855    bool first_pass = true;
 856    *value = 0;
 857
 858    if (!can_be_zero)
 859       min_value = 1;
 860
 861    for (exec_node *node = layout_const_expressions.get_head_raw();
 862         !node->is_tail_sentinel(); node = node->next) {
 863
 864       exec_list dummy_instructions;
 865       ast_node *const_expression = exec_node_data(ast_node, node, link);
 866
 867       ir_rvalue *const ir = const_expression->hir(&dummy_instructions, state);
 868
 869       ir_constant *const const_int =
 870          ir->constant_expression_value(ralloc_parent(ir));
 871
 872       if (const_int == NULL || !const_int->type->is_integer()) {
 873          YYLTYPE loc = const_expression->get_location();
 874          _mesa_glsl_error(&loc, state, "%s must be an integral constant "
 875                           "expression", qual_indentifier);
 876          return false;
 877       }
 878
 879       if (const_int->value.i[0] < min_value) {
 880          YYLTYPE loc = const_expression->get_location();
 881          _mesa_glsl_error(&loc, state, "%s layout qualifier is invalid "
 882                           "(%d < %d)", qual_indentifier,
 883                           const_int->value.i[0], min_value);
 884          return false;
 885       }
 886
 887       if (!first_pass && *value != const_int->value.u[0]) {
 888          YYLTYPE loc = const_expression->get_location();
 889          _mesa_glsl_error(&loc, state, "%s layout qualifier does not "
 890                           "match previous declaration (%d vs %d)",
 891                           qual_indentifier, *value, const_int->value.i[0]);
 892          return false;
 893       } else {
 894          first_pass = false;
 895          *value = const_int->value.u[0];
 896       }
 897
 898       /* If the location is const (and we've verified that
 899        * it is) then no instructions should have been emitted
 900        * when we converted it to HIR. If they were emitted,
 901        * then either the location isn't const after all, or
 902        * we are emitting unnecessary instructions.
 903        */
 904       assert(dummy_instructions.is_empty());
 905    }
 906
 907    return true;
 908 }
 909
 910 bool
 911 process_qualifier_constant(struct _mesa_glsl_parse_state *state,
 912                            YYLTYPE *loc,
 913                            const char *qual_indentifier,
 914                            ast_expression *const_expression,
 915                            unsigned *value)
 916 {
 917    exec_list dummy_instructions;
 918
 919    if (const_expression == NULL) {
 920       *value = 0;
 921       return true;
 922    }
 923
 924    ir_rvalue *const ir = const_expression->hir(&dummy_instructions, state);
 925
 926    ir_constant *const const_int =
 927       ir->constant_expression_value(ralloc_parent(ir));
 928    if (const_int == NULL || !const_int->type->is_integer()) {
 929       _mesa_glsl_error(loc, state, "%s must be an integral constant "
 930                        "expression", qual_indentifier);
 931       return false;
 932    }
 933
 934    if (const_int->value.i[0] < 0) {
 935       _mesa_glsl_error(loc, state, "%s layout qualifier is invalid (%d < 0)",
 936                        qual_indentifier, const_int->value.u[0]);
 937       return false;
 938    }
 939
 940    /* If the location is const (and we've verified that
 941     * it is) then no instructions should have been emitted
 942     * when we converted it to HIR. If they were emitted,
 943     * then either the location isn't const after all, or
 944     * we are emitting unnecessary instructions.
 945     */
 946    assert(dummy_instructions.is_empty());
 947
 948    *value = const_int->value.u[0];
 949    return true;
 950 }