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 extern "C" {
  26 #include "program/symbol_table.h"
  27 }
  28
  29 void
  30 ast_type_specifier::print(void) const
  31 {
  32    if (structure) {
  33       structure->print();
  34    } else {
  35       printf("%s ", type_name);
  36    }
  37
  38    if (is_array) {
  39       printf("[ ");
  40
  41       if (array_size) {
  42          array_size->print();
  43       }
  44
  45       printf("] ");
  46    }
  47 }
  48
  49 bool
  50 ast_fully_specified_type::has_qualifiers() const
  51 {
  52    return this->qualifier.flags.i != 0;
  53 }
  54
  55 bool ast_type_qualifier::has_interpolation() const
  56 {
  57    return this->flags.q.smooth
  58           || this->flags.q.flat
  59           || this->flags.q.noperspective;
  60 }
  61
  62 const char*
  63 ast_type_qualifier::interpolation_string() const
  64 {
  65    if (this->flags.q.smooth)
  66       return "smooth";
  67    else if (this->flags.q.flat)
  68       return "flat";
  69    else if (this->flags.q.noperspective)
  70       return "noperspective";
  71    else
  72       return NULL;
  73 }
  74
  75 bool
  76 ast_type_qualifier::merge_qualifier(YYLTYPE *loc,
  77                                     _mesa_glsl_parse_state *state,
  78                                     ast_type_qualifier q)
  79 {
  80    ast_type_qualifier ubo_mat_mask;
  81    ubo_mat_mask.flags.i = 0;
  82    ubo_mat_mask.flags.q.row_major = 1;
  83    ubo_mat_mask.flags.q.column_major = 1;
  84
  85    ast_type_qualifier ubo_layout_mask;
  86    ubo_layout_mask.flags.i = 0;
  87    ubo_layout_mask.flags.q.std140 = 1;
  88    ubo_layout_mask.flags.q.packed = 1;
  89    ubo_layout_mask.flags.q.shared = 1;
  90
  91    /* Uniform block layout qualifiers get to overwrite each
  92     * other (rightmost having priority), while all other
  93     * qualifiers currently don't allow duplicates.
  94     */
  95
  96    if ((this->flags.i & q.flags.i & ~(ubo_mat_mask.flags.i |
  97                                       ubo_layout_mask.flags.i)) != 0) {
  98       _mesa_glsl_error(loc, state,
  99                        "duplicate layout qualifiers used\n");
 100       return false;
 101    }
 102
 103    if ((q.flags.i & ubo_mat_mask.flags.i) != 0)
 104       this->flags.i &= ~ubo_mat_mask.flags.i;
 105    if ((q.flags.i & ubo_layout_mask.flags.i) != 0)
 106       this->flags.i &= ~ubo_layout_mask.flags.i;
 107
 108    this->flags.i |= q.flags.i;
 109
 110    if (q.flags.q.explicit_location)
 111       this->location = q.location;
 112
 113    if (q.flags.q.explicit_index)
 114       this->index = q.index;
 115
 116    return true;
 117 }
 118