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