src/mesa/shader/slang/slang_compile_function.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_FUNCTION_H
  26 #define SLANG_COMPILE_FUNCTION_H
  27
  28 #if defined __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 struct slang_code_unit_;
  33
  34 /**
  35  * Types of functions.
  36  */
  37 typedef enum slang_function_kind_
  38 {
  39    slang_func_ordinary,
  40    slang_func_constructor,
  41    slang_func_operator
  42 } slang_function_kind;
  43
  44
  45 /**
  46  * When we need to fill in addresses which we won't know until the future,
  47  * we keep track of them with a fix-up table.
  48  */
  49 typedef struct slang_fixup_table_
  50 {
  51    GLuint *table;     /**< array[count] of addresses */
  52    GLuint count;
  53 } slang_fixup_table;
  54
  55 extern void slang_fixup_table_init(slang_fixup_table *);
  56 extern void slang_fixup_table_free(slang_fixup_table *);
  57 extern GLboolean slang_fixup_save(slang_fixup_table *fixups, GLuint address);
  58
  59
  60 /**
  61  * Description of a compiled shader function.
  62  */
  63 typedef struct slang_function_
  64 {
  65    slang_function_kind kind;
  66    slang_variable header;      /**< The function's name and return type */
  67    slang_variable_scope *parameters; /**< formal parameters AND local vars */
  68    unsigned int param_count;   /**< number of formal params (no locals) */
  69    slang_operation *body;      /**< The instruction tree */
  70    unsigned int address;       /**< Address of this func in memory */
  71    slang_fixup_table fixups;   /**< Mem locations which need func's address */
  72    slang_atom end_label;       /**< The end-of-function label */
  73 } slang_function;
  74
  75 extern int slang_function_construct(slang_function *);
  76 extern void slang_function_destruct(slang_function *);
  77
  78
  79 /**
  80  * Basically, a list of compiled functions.
  81  */
  82 typedef struct slang_function_scope_
  83 {
  84    slang_function *functions;
  85    GLuint num_functions;
  86    struct slang_function_scope_ *outer_scope;
  87 } slang_function_scope;
  88
  89
  90 extern GLvoid
  91 _slang_function_scope_ctr(slang_function_scope *);
  92
  93 extern void
  94 slang_function_scope_destruct(slang_function_scope *);
  95
  96 extern GLboolean
  97 _slang_function_has_return_value(const slang_function *fun);
  98
  99 extern int
 100 slang_function_scope_find_by_name(slang_function_scope *, slang_atom, int);
 101
 102 extern slang_function *
 103 slang_function_scope_find(slang_function_scope *, slang_function *, int);
 104
 105 #ifdef __cplusplus
 106 }
 107 #endif
 108
 109 #endif /* SLANG_COMPILE_FUNCTION_H */