glsl_types.c

   1 /*
   2  * Copyright © 2009 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 <stdlib.h>
  25 #include "symbol_table.h"
  26 #include "glsl_parser_extras.h"
  27 #include "glsl_types.h"
  28 #include "builtin_types.h"
  29
  30
  31 struct glsl_type *
  32 _mesa_glsl_array_type_ctor(struct glsl_type *base, unsigned length,
  33                            const char *name)
  34 {
  35    struct glsl_type *type = calloc(1, sizeof(*type));
  36
  37    type->base_type = GLSL_TYPE_ARRAY;
  38    type->name = name;
  39    type->length = length;
  40    type->fields.array = base;
  41
  42    return type;
  43 }
  44
  45
  46 static void
  47 add_types_to_symbol_table(struct _mesa_symbol_table *symtab,
  48                           const struct glsl_type *types,
  49                           unsigned num_types)
  50 {
  51    unsigned i;
  52
  53    for (i = 0; i < num_types; i++) {
  54       _mesa_symbol_table_add_symbol(symtab, 0, types[i].name,
  55                                     (void *) & types[i]);
  56    }
  57 }
  58
  59
  60 static void
  61 generate_110_types(struct _mesa_symbol_table *symtab)
  62 {
  63    add_types_to_symbol_table(symtab, builtin_core_types,
  64                              Elements(builtin_core_types));
  65    add_types_to_symbol_table(symtab, builtin_structure_types,
  66                              Elements(builtin_structure_types));
  67    add_types_to_symbol_table(symtab, builtin_110_deprecated_structure_types,
  68                              Elements(builtin_110_deprecated_structure_types));
  69 }
  70
  71
  72 static void
  73 generate_120_types(struct _mesa_symbol_table *symtab)
  74 {
  75    generate_110_types(symtab);
  76
  77    add_types_to_symbol_table(symtab, builtin_120_types,
  78                              Elements(builtin_120_types));
  79 }
  80
  81
  82 static void
  83 generate_130_types(struct _mesa_symbol_table *symtab)
  84 {
  85    generate_120_types(symtab);
  86
  87    add_types_to_symbol_table(symtab, builtin_130_types,
  88                              Elements(builtin_130_types));
  89 }
  90
  91
  92 void
  93 _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state)
  94 {
  95    switch (state->language_version) {
  96    case 110:
  97       generate_110_types(state->symbols);
  98       break;
  99    case 120:
 100       generate_120_types(state->symbols);
 101       break;
 102    case 130:
 103       generate_130_types(state->symbols);
 104       break;
 105    default:
 106       /* error */
 107       break;
 108    }
 109 }
 110
 111
 112 const struct glsl_type *
 113 _mesa_glsl_get_vector_type(unsigned base_type, unsigned vector_length)
 114 {
 115    switch (base_type) {
 116    case GLSL_TYPE_UINT:
 117       switch (vector_length) {
 118       case 1:
 119       case 2:
 120       case 3:
 121       case 4:
 122          return glsl_uint_type + (vector_length - 1);
 123       default:
 124          return glsl_error_type;
 125       }
 126    case GLSL_TYPE_INT:
 127       switch (vector_length) {
 128       case 1:
 129       case 2:
 130       case 3:
 131       case 4:
 132          return glsl_int_type + (vector_length - 1);
 133       default:
 134          return glsl_error_type;
 135       }
 136    case GLSL_TYPE_FLOAT:
 137       switch (vector_length) {
 138       case 1:
 139       case 2:
 140       case 3:
 141       case 4:
 142          return glsl_float_type + (vector_length - 1);
 143       default:
 144          return glsl_error_type;
 145       }
 146    case GLSL_TYPE_BOOL:
 147       switch (vector_length) {
 148       case 1:
 149       case 2:
 150       case 3:
 151       case 4:
 152          return glsl_bool_type + (vector_length - 1);
 153       default:
 154          return glsl_error_type;
 155       }
 156    default:
 157       return glsl_error_type;
 158    }
 159 }