src/mesa/shader/slang/slang_export.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.5
   4  *
   5  * Copyright (C) 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 #if !defined SLANG_EXPORT_H
  26 #define SLANG_EXPORT_H
  27
  28 #include "slang_utility.h"
  29
  30 #if defined __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 /*
  35  * Basic data quantity to transfer between application and assembly.
  36  * The <size> is the actual size of the data quantity including padding, if any. It is
  37  * used to calculate offsets from the beginning of the data.
  38  * The <array_len> is not 0, the data quantity is an array of <array_len> size.
  39  * If the <structure> is not NULL, the data quantity is a struct. The <basic_type> is
  40  * invalid and the <field_count> holds the size of the <structure> array.
  41  * The <basic_type> values match those of <type> parameter for glGetActiveUniformARB.
  42  */
  43
  44 typedef struct slang_export_data_quant_
  45 {
  46         slang_atom name;
  47         GLuint size;
  48         GLuint array_len;
  49         struct slang_export_data_quant_ *structure;
  50         union
  51         {
  52                 GLenum basic_type;
  53                 GLuint field_count;
  54         } u;
  55 } slang_export_data_quant;
  56
  57 GLvoid slang_export_data_quant_ctr (slang_export_data_quant *);
  58 GLvoid slang_export_data_quant_dtr (slang_export_data_quant *);
  59 slang_export_data_quant *slang_export_data_quant_add_field (slang_export_data_quant *);
  60
  61 /*
  62  * Data access pattern. Specifies how data is accessed at what frequency.
  63  */
  64
  65 typedef enum
  66 {
  67         slang_exp_uniform,
  68         slang_exp_varying,
  69         slang_exp_attribute
  70 } slang_export_data_access;
  71
  72 /*
  73  * Data export entry. Holds the data type information, access pattern and base address.
  74  */
  75
  76 typedef struct
  77 {
  78         slang_export_data_quant quant;
  79         slang_export_data_access access;
  80         GLuint address;
  81 } slang_export_data_entry;
  82
  83 GLvoid slang_export_data_entry_ctr (slang_export_data_entry *);
  84 GLvoid slang_export_data_entry_dtr (slang_export_data_entry *);
  85
  86 /*
  87  * Data export table.
  88  */
  89
  90 typedef struct
  91 {
  92         slang_export_data_entry *entries;
  93         GLuint count;
  94         slang_atom_pool *atoms;
  95 } slang_export_data_table;
  96
  97 GLvoid slang_export_data_table_ctr (slang_export_data_table *);
  98 GLvoid slang_export_data_table_dtr (slang_export_data_table *);
  99 slang_export_data_entry *slang_export_data_table_add (slang_export_data_table *);
 100
 101 /*
 102  * Code export entry. Contains label name and its entry point (label, address).
 103  */
 104
 105 typedef struct
 106 {
 107         slang_atom name;
 108         GLuint address;
 109 } slang_export_code_entry;
 110
 111 /*
 112  * Code export table.
 113  */
 114
 115 typedef struct
 116 {
 117         slang_export_code_entry *entries;
 118         GLuint count;
 119         slang_atom_pool *atoms;
 120 } slang_export_code_table;
 121
 122 GLvoid slang_export_code_table_ctr (slang_export_code_table *);
 123 GLvoid slang_export_code_table_dtr (slang_export_code_table *);
 124 slang_export_code_entry *slang_export_code_table_add (slang_export_code_table *);
 125
 126 /*
 127  * _slang_find_exported_data()
 128  *
 129  * Parses the name string and returns corresponding data entry, data quantity and offset.
 130  * Returns GL_TRUE if the data is found, returns GL_FALSE otherwise.
 131  */
 132
 133 GLboolean _slang_find_exported_data (slang_export_data_table *, const char *,
 134         slang_export_data_entry **, slang_export_data_quant **, GLuint *);
 135
 136 #ifdef __cplusplus
 137 }
 138 #endif
 139
 140 #endif
 141