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 (is_array) {
  36       printf("[ ");
  37
  38       if (array_size) {
  39          array_size->print();
  40       }
  41
  42       printf("] ");
  43    }
  44 }
  45
  46 bool
  47 ast_fully_specified_type::has_qualifiers() const
  48 {
  49    return this->qualifier.flags.i != 0;
  50 }
  51
  52 bool ast_type_qualifier::has_interpolation() const
  53 {
  54    return this->flags.q.smooth
  55           || this->flags.q.flat
  56           || this->flags.q.noperspective;
  57 }
  58
  59 bool
  60 ast_type_qualifier::has_layout() const
  61 {
  62    return this->flags.q.origin_upper_left
  63           || this->flags.q.pixel_center_integer
  64           || this->flags.q.depth_any
  65           || this->flags.q.depth_greater
  66           || this->flags.q.depth_less
  67           || this->flags.q.depth_unchanged
  68           || this->flags.q.std140
  69           || this->flags.q.shared
  70           || this->flags.q.column_major
  71           || this->flags.q.row_major
  72           || this->flags.q.packed
  73           || this->flags.q.explicit_location
  74           || this->flags.q.explicit_index
  75           || this->flags.q.explicit_binding
  76           || this->flags.q.explicit_offset;
  77 }
  78
  79 bool
  80 ast_type_qualifier::has_storage() const
  81 {
  82    return this->flags.q.constant
  83           || this->flags.q.attribute
  84           || this->flags.q.varying
  85           || this->flags.q.in
  86           || this->flags.q.out
  87           || this->flags.q.uniform;
  88 }
  89
  90 bool
  91 ast_type_qualifier::has_auxiliary_storage() const
  92 {
  93    return this->flags.q.centroid;
  94 }
  95
  96 const char*
  97 ast_type_qualifier::interpolation_string() const
  98 {
  99    if (this->flags.q.smooth)
 100       return "smooth";
 101    else if (this->flags.q.flat)
 102       return "flat";
 103    else if (this->flags.q.noperspective)
 104       return "noperspective";
 105    else
 106       return NULL;
 107 }
 108
 109 bool
 110 ast_type_qualifier::merge_qualifier(YYLTYPE *loc,
 111                                     _mesa_glsl_parse_state *state,
 112                                     ast_type_qualifier q)
 113 {
 114    ast_type_qualifier ubo_mat_mask;
 115    ubo_mat_mask.flags.i = 0;
 116    ubo_mat_mask.flags.q.row_major = 1;
 117    ubo_mat_mask.flags.q.column_major = 1;
 118
 119    ast_type_qualifier ubo_layout_mask;
 120    ubo_layout_mask.flags.i = 0;
 121    ubo_layout_mask.flags.q.std140 = 1;
 122    ubo_layout_mask.flags.q.packed = 1;
 123    ubo_layout_mask.flags.q.shared = 1;
 124
 125    ast_type_qualifier ubo_binding_mask;
 126    ubo_binding_mask.flags.q.explicit_binding = 1;
 127    ubo_binding_mask.flags.q.explicit_offset = 1;
 128
 129    /* Uniform block layout qualifiers get to overwrite each
 130     * other (rightmost having priority), while all other
 131     * qualifiers currently don't allow duplicates.
 132     */
 133
 134    if ((this->flags.i & q.flags.i & ~(ubo_mat_mask.flags.i |
 135                                       ubo_layout_mask.flags.i |
 136                                       ubo_binding_mask.flags.i)) != 0) {
 137       _mesa_glsl_error(loc, state,
 138                        "duplicate layout qualifiers used");
 139       return false;
 140    }
 141
 142    if (q.flags.q.prim_type) {
 143       if (this->flags.q.prim_type && this->prim_type != q.prim_type) {
 144          _mesa_glsl_error(loc, state,
 145                           "conflicting primitive type qualifiers used");
 146          return false;
 147       }
 148       this->prim_type = q.prim_type;
 149    }
 150
 151    if (q.flags.q.max_vertices) {
 152       if (this->flags.q.max_vertices && this->max_vertices != q.max_vertices) {
 153          _mesa_glsl_error(loc, state,
 154                           "geometry shader set conflicting max_vertices "
 155                           "(%d and %d)", this->max_vertices, q.max_vertices);
 156          return false;
 157       }
 158       this->max_vertices = q.max_vertices;
 159    }
 160
 161    if ((q.flags.i & ubo_mat_mask.flags.i) != 0)
 162       this->flags.i &= ~ubo_mat_mask.flags.i;
 163    if ((q.flags.i & ubo_layout_mask.flags.i) != 0)
 164       this->flags.i &= ~ubo_layout_mask.flags.i;
 165
 166    this->flags.i |= q.flags.i;
 167
 168    if (q.flags.q.explicit_location)
 169       this->location = q.location;
 170
 171    if (q.flags.q.explicit_index)
 172       this->index = q.index;
 173
 174    if (q.flags.q.explicit_binding)
 175       this->binding = q.binding;
 176
 177    if (q.flags.q.explicit_offset)
 178       this->offset = q.offset;
 179
 180    if (q.precision != ast_precision_none)
 181       this->precision = q.precision;
 182
 183    return true;
 184 }
 185