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           || this->flags.q.sample;
  95 }
  96
  97 const char*
  98 ast_type_qualifier::interpolation_string() const
  99 {
 100    if (this->flags.q.smooth)
 101       return "smooth";
 102    else if (this->flags.q.flat)
 103       return "flat";
 104    else if (this->flags.q.noperspective)
 105       return "noperspective";
 106    else
 107       return NULL;
 108 }
 109
 110 bool
 111 ast_type_qualifier::merge_qualifier(YYLTYPE *loc,
 112                                     _mesa_glsl_parse_state *state,
 113                                     ast_type_qualifier q)
 114 {
 115    ast_type_qualifier ubo_mat_mask;
 116    ubo_mat_mask.flags.i = 0;
 117    ubo_mat_mask.flags.q.row_major = 1;
 118    ubo_mat_mask.flags.q.column_major = 1;
 119
 120    ast_type_qualifier ubo_layout_mask;
 121    ubo_layout_mask.flags.i = 0;
 122    ubo_layout_mask.flags.q.std140 = 1;
 123    ubo_layout_mask.flags.q.packed = 1;
 124    ubo_layout_mask.flags.q.shared = 1;
 125
 126    ast_type_qualifier ubo_binding_mask;
 127    ubo_binding_mask.flags.q.explicit_binding = 1;
 128    ubo_binding_mask.flags.q.explicit_offset = 1;
 129
 130    /* Uniform block layout qualifiers get to overwrite each
 131     * other (rightmost having priority), while all other
 132     * qualifiers currently don't allow duplicates.
 133     */
 134
 135    if ((this->flags.i & q.flags.i & ~(ubo_mat_mask.flags.i |
 136                                       ubo_layout_mask.flags.i |
 137                                       ubo_binding_mask.flags.i)) != 0) {
 138       _mesa_glsl_error(loc, state,
 139                        "duplicate layout qualifiers used");
 140       return false;
 141    }
 142
 143    if (q.flags.q.prim_type) {
 144       if (this->flags.q.prim_type && this->prim_type != q.prim_type) {
 145          _mesa_glsl_error(loc, state,
 146                           "conflicting primitive type qualifiers used");
 147          return false;
 148       }
 149       this->prim_type = q.prim_type;
 150    }
 151
 152    if (q.flags.q.max_vertices) {
 153       if (this->flags.q.max_vertices && this->max_vertices != q.max_vertices) {
 154          _mesa_glsl_error(loc, state,
 155                           "geometry shader set conflicting max_vertices "
 156                           "(%d and %d)", this->max_vertices, q.max_vertices);
 157          return false;
 158       }
 159       this->max_vertices = q.max_vertices;
 160    }
 161
 162    if ((q.flags.i & ubo_mat_mask.flags.i) != 0)
 163       this->flags.i &= ~ubo_mat_mask.flags.i;
 164    if ((q.flags.i & ubo_layout_mask.flags.i) != 0)
 165       this->flags.i &= ~ubo_layout_mask.flags.i;
 166
 167    this->flags.i |= q.flags.i;
 168
 169    if (q.flags.q.explicit_location)
 170       this->location = q.location;
 171
 172    if (q.flags.q.explicit_index)
 173       this->index = q.index;
 174
 175    if (q.flags.q.explicit_binding)
 176       this->binding = q.binding;
 177
 178    if (q.flags.q.explicit_offset)
 179       this->offset = q.offset;
 180
 181    if (q.precision != ast_precision_none)
 182       this->precision = q.precision;
 183
 184    return true;
 185 }
 186