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 }
  76
  77 bool
  78 ast_type_qualifier::has_storage() const
  79 {
  80    return this->flags.q.constant
  81           || this->flags.q.attribute
  82           || this->flags.q.varying
  83           || this->flags.q.in
  84           || this->flags.q.out
  85           || this->flags.q.uniform;
  86 }
  87
  88 const char*
  89 ast_type_qualifier::interpolation_string() const
  90 {
  91    if (this->flags.q.smooth)
  92       return "smooth";
  93    else if (this->flags.q.flat)
  94       return "flat";
  95    else if (this->flags.q.noperspective)
  96       return "noperspective";
  97    else
  98       return NULL;
  99 }
 100
 101 bool
 102 ast_type_qualifier::merge_qualifier(YYLTYPE *loc,
 103                                     _mesa_glsl_parse_state *state,
 104                                     ast_type_qualifier q)
 105 {
 106    ast_type_qualifier ubo_mat_mask;
 107    ubo_mat_mask.flags.i = 0;
 108    ubo_mat_mask.flags.q.row_major = 1;
 109    ubo_mat_mask.flags.q.column_major = 1;
 110
 111    ast_type_qualifier ubo_layout_mask;
 112    ubo_layout_mask.flags.i = 0;
 113    ubo_layout_mask.flags.q.std140 = 1;
 114    ubo_layout_mask.flags.q.packed = 1;
 115    ubo_layout_mask.flags.q.shared = 1;
 116
 117    /* Uniform block layout qualifiers get to overwrite each
 118     * other (rightmost having priority), while all other
 119     * qualifiers currently don't allow duplicates.
 120     */
 121
 122    if ((this->flags.i & q.flags.i & ~(ubo_mat_mask.flags.i |
 123                                       ubo_layout_mask.flags.i)) != 0) {
 124       _mesa_glsl_error(loc, state,
 125                        "duplicate layout qualifiers used\n");
 126       return false;
 127    }
 128
 129    if ((q.flags.i & ubo_mat_mask.flags.i) != 0)
 130       this->flags.i &= ~ubo_mat_mask.flags.i;
 131    if ((q.flags.i & ubo_layout_mask.flags.i) != 0)
 132       this->flags.i &= ~ubo_layout_mask.flags.i;
 133
 134    this->flags.i |= q.flags.i;
 135
 136    if (q.flags.q.explicit_location)
 137       this->location = q.location;
 138
 139    if (q.flags.q.explicit_index)
 140       this->index = q.index;
 141
 142    return true;
 143 }
 144