src/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() const
  42 {
  43    return this->qualifier.flags.i != 0;
  44 }
  45
  46 bool ast_type_qualifier::has_interpolation() const
  47 {
  48    return this->flags.q.smooth
  49           || this->flags.q.flat
  50           || this->flags.q.noperspective;
  51 }
  52
  53 bool
  54 ast_type_qualifier::has_layout() const
  55 {
  56    return this->flags.q.origin_upper_left
  57           || this->flags.q.pixel_center_integer
  58           || this->flags.q.depth_any
  59           || this->flags.q.depth_greater
  60           || this->flags.q.depth_less
  61           || this->flags.q.depth_unchanged
  62           || this->flags.q.std140
  63           || this->flags.q.shared
  64           || this->flags.q.column_major
  65           || this->flags.q.row_major
  66           || this->flags.q.packed
  67           || this->flags.q.explicit_location
  68           || this->flags.q.explicit_index
  69           || this->flags.q.explicit_binding
  70           || this->flags.q.explicit_offset;
  71 }
  72
  73 bool
  74 ast_type_qualifier::has_storage() const
  75 {
  76    return this->flags.q.constant
  77           || this->flags.q.attribute
  78           || this->flags.q.varying
  79           || this->flags.q.in
  80           || this->flags.q.out
  81           || this->flags.q.uniform;
  82 }
  83
  84 bool
  85 ast_type_qualifier::has_auxiliary_storage() const
  86 {
  87    return this->flags.q.centroid
  88           || this->flags.q.sample;
  89 }
  90
  91 const char*
  92 ast_type_qualifier::interpolation_string() const
  93 {
  94    if (this->flags.q.smooth)
  95       return "smooth";
  96    else if (this->flags.q.flat)
  97       return "flat";
  98    else if (this->flags.q.noperspective)
  99       return "noperspective";
 100    else
 101       return NULL;
 102 }
 103
 104 bool
 105 ast_type_qualifier::merge_qualifier(YYLTYPE *loc,
 106                                     _mesa_glsl_parse_state *state,
 107                                     ast_type_qualifier q)
 108 {
 109    ast_type_qualifier ubo_mat_mask;
 110    ubo_mat_mask.flags.i = 0;
 111    ubo_mat_mask.flags.q.row_major = 1;
 112    ubo_mat_mask.flags.q.column_major = 1;
 113
 114    ast_type_qualifier ubo_layout_mask;
 115    ubo_layout_mask.flags.i = 0;
 116    ubo_layout_mask.flags.q.std140 = 1;
 117    ubo_layout_mask.flags.q.packed = 1;
 118    ubo_layout_mask.flags.q.shared = 1;
 119
 120    ast_type_qualifier ubo_binding_mask;
 121    ubo_binding_mask.flags.q.explicit_binding = 1;
 122    ubo_binding_mask.flags.q.explicit_offset = 1;
 123
 124    /* Uniform block layout qualifiers get to overwrite each
 125     * other (rightmost having priority), while all other
 126     * qualifiers currently don't allow duplicates.
 127     */
 128
 129    if ((this->flags.i & q.flags.i & ~(ubo_mat_mask.flags.i |
 130                                       ubo_layout_mask.flags.i |
 131                                       ubo_binding_mask.flags.i)) != 0) {
 132       _mesa_glsl_error(loc, state,
 133                        "duplicate layout qualifiers used");
 134       return false;
 135    }
 136
 137    if (q.flags.q.prim_type) {
 138       if (this->flags.q.prim_type && this->prim_type != q.prim_type) {
 139          _mesa_glsl_error(loc, state,
 140                           "conflicting primitive type qualifiers used");
 141          return false;
 142       }
 143       this->prim_type = q.prim_type;
 144    }
 145
 146    if (q.flags.q.max_vertices) {
 147       if (this->flags.q.max_vertices && this->max_vertices != q.max_vertices) {
 148          _mesa_glsl_error(loc, state,
 149                           "geometry shader set conflicting max_vertices "
 150                           "(%d and %d)", this->max_vertices, q.max_vertices);
 151          return false;
 152       }
 153       this->max_vertices = q.max_vertices;
 154    }
 155
 156    if ((q.flags.i & ubo_mat_mask.flags.i) != 0)
 157       this->flags.i &= ~ubo_mat_mask.flags.i;
 158    if ((q.flags.i & ubo_layout_mask.flags.i) != 0)
 159       this->flags.i &= ~ubo_layout_mask.flags.i;
 160
 161    for (int i = 0; i < 3; i++) {
 162       if (q.flags.q.local_size & (1 << i)) {
 163          if ((this->flags.q.local_size & (1 << i)) &&
 164              this->local_size[i] != q.local_size[i]) {
 165             _mesa_glsl_error(loc, state,
 166                              "compute shader set conflicting values for "
 167                              "local_size_%c (%d and %d)", 'x' + i,
 168                              this->local_size[i], q.local_size[i]);
 169             return false;
 170          }
 171          this->local_size[i] = q.local_size[i];
 172       }
 173    }
 174
 175    this->flags.i |= q.flags.i;
 176
 177    if (q.flags.q.explicit_location)
 178       this->location = q.location;
 179
 180    if (q.flags.q.explicit_index)
 181       this->index = q.index;
 182
 183    if (q.flags.q.explicit_binding)
 184       this->binding = q.binding;
 185
 186    if (q.flags.q.explicit_offset)
 187       this->offset = q.offset;
 188
 189    if (q.precision != ast_precision_none)
 190       this->precision = q.precision;
 191
 192    return true;
 193 }
 194