src/mesa/shader/slang/slang_compile_variable.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.5.2
   4  *
   5  * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #ifndef SLANG_COMPILE_VARIABLE_H
  26 #define SLANG_COMPILE_VARIABLE_H
  27
  28 #if defined __cplusplus
  29 extern "C" {
  30 #endif
  31
  32
  33 typedef enum slang_type_variant_
  34 {
  35    SLANG_VARIANT,    /* the default */
  36    SLANG_INVARIANT   /* indicates the "invariant" keyword */
  37 } slang_type_variant;
  38
  39
  40 typedef enum slang_type_centroid_
  41 {
  42    SLANG_CENTER,    /* the default */
  43    SLANG_CENTROID   /* indicates the "centroid" keyword */
  44 } slang_type_centroid;
  45
  46
  47 typedef enum slang_type_qualifier_
  48 {
  49    SLANG_QUAL_NONE,
  50    SLANG_QUAL_CONST,
  51    SLANG_QUAL_ATTRIBUTE,
  52    SLANG_QUAL_VARYING,
  53    SLANG_QUAL_UNIFORM,
  54    SLANG_QUAL_OUT,
  55    SLANG_QUAL_INOUT,
  56    SLANG_QUAL_FIXEDOUTPUT,      /* internal */
  57    SLANG_QUAL_FIXEDINPUT        /* internal */
  58 } slang_type_qualifier;
  59
  60 extern slang_type_specifier_type
  61 slang_type_specifier_type_from_string(const char *);
  62
  63 extern const char *
  64 slang_type_specifier_type_to_string(slang_type_specifier_type);
  65
  66
  67
  68 typedef enum slang_type_precision_
  69 {
  70    SLANG_PREC_DEFAULT,
  71    SLANG_PREC_LOW,
  72    SLANG_PREC_MEDIUM,
  73    SLANG_PREC_HIGH
  74 } slang_type_precision;
  75
  76
  77 typedef struct slang_fully_specified_type_
  78 {
  79    slang_type_qualifier qualifier;
  80    slang_type_specifier specifier;
  81    slang_type_precision precision;
  82    slang_type_variant variant;
  83    slang_type_centroid centroid;
  84 } slang_fully_specified_type;
  85
  86 extern int
  87 slang_fully_specified_type_construct(slang_fully_specified_type *);
  88
  89 extern void
  90 slang_fully_specified_type_destruct(slang_fully_specified_type *);
  91
  92 extern int
  93 slang_fully_specified_type_copy(slang_fully_specified_type *,
  94                                 const slang_fully_specified_type *);
  95
  96
  97 /**
  98  * A shading language program variable.
  99  */
 100 typedef struct slang_variable_
 101 {
 102    slang_fully_specified_type type; /**< Variable's data type */
 103    slang_atom a_name;               /**< The variable's name (char *) */
 104    GLuint array_len;                /**< only if type == SLANG_SPEC_ARRAy */
 105    struct slang_operation_ *initializer; /**< Optional initializer code */
 106    GLuint address;                  /**< Storage location */
 107    GLuint size;                     /**< Variable's size in bytes */
 108    GLboolean isTemp;                /**< a named temporary (__resultTmp) */
 109    GLboolean declared;              /**< for debug */
 110    void *aux;                       /**< Used during code gen */
 111 } slang_variable;
 112
 113
 114 /**
 115  * Basically a list of variables, with a pointer to the parent scope.
 116  */
 117 typedef struct slang_variable_scope_
 118 {
 119    slang_variable **variables;  /**< Array [num_variables] of ptrs to vars */
 120    GLuint num_variables;
 121    struct slang_variable_scope_ *outer_scope;
 122 } slang_variable_scope;
 123
 124
 125 extern slang_variable_scope *
 126 _slang_variable_scope_new(slang_variable_scope *parent);
 127
 128 extern GLvoid
 129 _slang_variable_scope_ctr(slang_variable_scope *);
 130
 131 extern void
 132 slang_variable_scope_destruct(slang_variable_scope *);
 133
 134 extern int
 135 slang_variable_scope_copy(slang_variable_scope *,
 136                           const slang_variable_scope *);
 137
 138 extern slang_variable *
 139 slang_variable_scope_grow(slang_variable_scope *);
 140
 141 extern int
 142 slang_variable_construct(slang_variable *);
 143
 144 extern void
 145 slang_variable_destruct(slang_variable *);
 146
 147 extern int
 148 slang_variable_copy(slang_variable *, const slang_variable *);
 149
 150 extern slang_variable *
 151 _slang_locate_variable(const slang_variable_scope *, const slang_atom a_name,
 152                        GLboolean all);
 153
 154
 155 #ifdef __cplusplus
 156 }
 157 #endif
 158
 159 #endif /* SLANG_COMPILE_VARIABLE_H */