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_qualifier_
  34 {
  35    SLANG_QUAL_NONE,
  36    SLANG_QUAL_CONST,
  37    SLANG_QUAL_ATTRIBUTE,
  38    SLANG_QUAL_VARYING,
  39    SLANG_QUAL_UNIFORM,
  40    SLANG_QUAL_OUT,
  41    SLANG_QUAL_INOUT,
  42    SLANG_QUAL_FIXEDOUTPUT,      /* internal */
  43    SLANG_QUAL_FIXEDINPUT        /* internal */
  44 } slang_type_qualifier;
  45
  46 extern slang_type_specifier_type
  47 slang_type_specifier_type_from_string(const char *);
  48
  49 extern const char *
  50 slang_type_specifier_type_to_string(slang_type_specifier_type);
  51
  52
  53
  54 typedef struct slang_fully_specified_type_
  55 {
  56    slang_type_qualifier qualifier;
  57    slang_type_specifier specifier;
  58 } slang_fully_specified_type;
  59
  60 extern int
  61 slang_fully_specified_type_construct(slang_fully_specified_type *);
  62
  63 extern void
  64 slang_fully_specified_type_destruct(slang_fully_specified_type *);
  65
  66 extern int
  67 slang_fully_specified_type_copy(slang_fully_specified_type *,
  68                                 const slang_fully_specified_type *);
  69
  70
  71 /**
  72  * A shading language program variable.
  73  */
  74 typedef struct slang_variable_
  75 {
  76    slang_fully_specified_type type; /**< Variable's data type */
  77    slang_atom a_name;               /**< The variable's name (char *) */
  78    GLuint array_len;                /**< only if type == SLANG_SPEC_ARRAy */
  79    struct slang_operation_ *initializer; /**< Optional initializer code */
  80    GLuint address;                  /**< Storage location */
  81    GLuint size;                     /**< Variable's size in bytes */
  82    GLboolean isTemp;                /**< a named temporary (__resultTmp) */
  83    void *aux;                       /**< Used during code gen */
  84 } slang_variable;
  85
  86
  87 /**
  88  * Basically a list of variables, with a pointer to the parent scope.
  89  */
  90 typedef struct slang_variable_scope_
  91 {
  92    slang_variable **variables;  /**< Array [num_variables] of ptrs to vars */
  93    GLuint num_variables;
  94    struct slang_variable_scope_ *outer_scope;
  95 } slang_variable_scope;
  96
  97
  98 extern slang_variable_scope *
  99 _slang_variable_scope_new(slang_variable_scope *parent);
 100
 101 extern GLvoid
 102 _slang_variable_scope_ctr(slang_variable_scope *);
 103
 104 extern void
 105 slang_variable_scope_destruct(slang_variable_scope *);
 106
 107 extern int
 108 slang_variable_scope_copy(slang_variable_scope *,
 109                           const slang_variable_scope *);
 110
 111 extern slang_variable *
 112 slang_variable_scope_grow(slang_variable_scope *);
 113
 114 extern int
 115 slang_variable_construct(slang_variable *);
 116
 117 extern void
 118 slang_variable_destruct(slang_variable *);
 119
 120 extern int
 121 slang_variable_copy(slang_variable *, const slang_variable *);
 122
 123 extern slang_variable *
 124 _slang_locate_variable(const slang_variable_scope *, const slang_atom a_name,
 125                        GLboolean all);
 126
 127
 128 #ifdef __cplusplus
 129 }
 130 #endif
 131
 132 #endif /* SLANG_COMPILE_VARIABLE_H */