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 struct slang_ir_storage_;
  34
  35
  36 typedef enum slang_type_variant_
  37 {
  38    SLANG_VARIANT,    /* the default */
  39    SLANG_INVARIANT   /* indicates the "invariant" keyword */
  40 } slang_type_variant;
  41
  42
  43 typedef enum slang_type_centroid_
  44 {
  45    SLANG_CENTER,    /* the default */
  46    SLANG_CENTROID   /* indicates the "centroid" keyword */
  47 } slang_type_centroid;
  48
  49
  50 typedef enum slang_type_qualifier_
  51 {
  52    SLANG_QUAL_NONE,
  53    SLANG_QUAL_CONST,
  54    SLANG_QUAL_ATTRIBUTE,
  55    SLANG_QUAL_VARYING,
  56    SLANG_QUAL_UNIFORM,
  57    SLANG_QUAL_OUT,
  58    SLANG_QUAL_INOUT,
  59    SLANG_QUAL_FIXEDOUTPUT,      /* internal */
  60    SLANG_QUAL_FIXEDINPUT        /* internal */
  61 } slang_type_qualifier;
  62
  63 extern slang_type_specifier_type
  64 slang_type_specifier_type_from_string(const char *);
  65
  66 extern const char *
  67 slang_type_specifier_type_to_string(slang_type_specifier_type);
  68
  69
  70
  71 typedef enum slang_type_precision_
  72 {
  73    SLANG_PREC_DEFAULT,
  74    SLANG_PREC_LOW,
  75    SLANG_PREC_MEDIUM,
  76    SLANG_PREC_HIGH
  77 } slang_type_precision;
  78
  79
  80 typedef struct slang_fully_specified_type_
  81 {
  82    slang_type_qualifier qualifier;
  83    slang_type_specifier specifier;
  84    slang_type_precision precision;
  85    slang_type_variant variant;
  86    slang_type_centroid centroid;
  87    GLint array_len;           /**< -1 if not an array type */
  88 } slang_fully_specified_type;
  89
  90 extern int
  91 slang_fully_specified_type_construct(slang_fully_specified_type *);
  92
  93 extern void
  94 slang_fully_specified_type_destruct(slang_fully_specified_type *);
  95
  96 extern int
  97 slang_fully_specified_type_copy(slang_fully_specified_type *,
  98                                 const slang_fully_specified_type *);
  99
 100
 101 /**
 102  * A shading language program variable.
 103  */
 104 typedef struct slang_variable_
 105 {
 106    slang_fully_specified_type type; /**< Variable's data type */
 107    slang_atom a_name;               /**< The variable's name (char *) */
 108    GLuint array_len;                /**< only if type == SLANG_SPEC_ARRAy */
 109    struct slang_operation_ *initializer; /**< Optional initializer code */
 110    GLuint address;                  /**< Storage location */
 111    GLuint size;                     /**< Variable's size in bytes */
 112    GLboolean isTemp;                /**< a named temporary (__resultTmp) */
 113    GLboolean declared;              /**< for debug */
 114    struct slang_ir_storage_ *store; /**< Storage for this var */
 115 } slang_variable;
 116
 117
 118 /**
 119  * Basically a list of variables, with a pointer to the parent scope.
 120  */
 121 typedef struct slang_variable_scope_
 122 {
 123    slang_variable **variables;  /**< Array [num_variables] of ptrs to vars */
 124    GLuint num_variables;
 125    struct slang_variable_scope_ *outer_scope;
 126 } slang_variable_scope;
 127
 128
 129 extern slang_variable_scope *
 130 _slang_variable_scope_new(slang_variable_scope *parent);
 131
 132 extern GLvoid
 133 _slang_variable_scope_ctr(slang_variable_scope *);
 134
 135 extern void
 136 slang_variable_scope_destruct(slang_variable_scope *);
 137
 138 extern int
 139 slang_variable_scope_copy(slang_variable_scope *,
 140                           const slang_variable_scope *);
 141
 142 extern slang_variable *
 143 slang_variable_scope_grow(slang_variable_scope *);
 144
 145 extern int
 146 slang_variable_construct(slang_variable *);
 147
 148 extern void
 149 slang_variable_destruct(slang_variable *);
 150
 151 extern int
 152 slang_variable_copy(slang_variable *, const slang_variable *);
 153
 154 extern slang_variable *
 155 _slang_locate_variable(const slang_variable_scope *, const slang_atom a_name,
 156                        GLboolean all);
 157
 158
 159 #ifdef __cplusplus
 160 }
 161 #endif
 162
 163 #endif /* SLANG_COMPILE_VARIABLE_H */