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/*
* Mesa 3-D graphics library
* Version: 6.5
*
* Copyright (C) 2006 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#if !defined SLANG_EXPORT_H
#define SLANG_EXPORT_H
#include "slang_utility.h"
#if defined __cplusplus
extern "C" {
#endif
/*
* Basic data quantity to transfer between application and assembly.
* The <size> is the actual size of the data quantity including padding, if any. It is
* used to calculate offsets from the beginning of the data.
* If the <array_len> is not 0, the data quantity is an array of <array_len> size.
* If the <structure> is not NULL, the data quantity is a struct. The <basic_type> is
* invalid and the <field_count> holds the size of the <structure> array.
* The <basic_type> values match those of <type> parameter for glGetActiveUniformARB.
*/
typedef struct slang_export_data_quant_
{
slang_atom name;
GLuint size;
GLuint array_len;
struct slang_export_data_quant_ *structure;
union
{
GLenum basic_type;
GLuint field_count;
} u;
} slang_export_data_quant;
GLvoid slang_export_data_quant_ctr (slang_export_data_quant *);
GLvoid slang_export_data_quant_dtr (slang_export_data_quant *);
slang_export_data_quant *slang_export_data_quant_add_field (slang_export_data_quant *);
/*
* Returns GL_FALSE if the quant is not an array.
*/
GLboolean slang_export_data_quant_array (slang_export_data_quant *);
/*
* Returns GL_FALSE if the quant is not a structure.
*/
GLboolean slang_export_data_quant_struct (slang_export_data_quant *);
/*
* Returns GL_TRUE if the quant is neither an array nor a structure.
*/
GLboolean slang_export_data_quant_simple (slang_export_data_quant *);
/*
* Returns basic type of the quant. It must not be a structure.
*/
GLenum slang_export_data_quant_type (slang_export_data_quant *);
/*
* Returns number of fields in the quant that is a structure.
*/
GLuint slang_export_data_quant_fields (slang_export_data_quant *);
/*
* Return number of elements in the quant.
* For arrays, return the size of the array.
* Otherwise, return 1.
*/
GLuint slang_export_data_quant_elements (slang_export_data_quant *);
/*
* Returns total number of components withing the quant element.
*/
GLuint slang_export_data_quant_components (slang_export_data_quant *);
/*
* Returns size of the quant element.
*/
GLuint slang_export_data_quant_size (slang_export_data_quant *);
/*
* Data access pattern. Specifies how data is accessed at what frequency.
*/
typedef enum
{
slang_exp_uniform,
slang_exp_varying,
slang_exp_attribute
} slang_export_data_access;
/*
* Data export entry. Holds the data type information, access pattern and base address.
*/
typedef struct
{
slang_export_data_quant quant;
slang_export_data_access access;
GLuint address;
} slang_export_data_entry;
GLvoid slang_export_data_entry_ctr (slang_export_data_entry *);
GLvoid slang_export_data_entry_dtr (slang_export_data_entry *);
/*
* Data export table.
*/
typedef struct
{
slang_export_data_entry *entries;
GLuint count;
slang_atom_pool *atoms;
} slang_export_data_table;
GLvoid slang_export_data_table_ctr (slang_export_data_table *);
GLvoid slang_export_data_table_dtr (slang_export_data_table *);
slang_export_data_entry *slang_export_data_table_add (slang_export_data_table *);
/*
* Code export entry. Contains label name and its entry point (label, address).
*/
typedef struct
{
slang_atom name;
GLuint address;
} slang_export_code_entry;
/*
* Code export table.
*/
typedef struct
{
slang_export_code_entry *entries;
GLuint count;
slang_atom_pool *atoms;
} slang_export_code_table;
GLvoid slang_export_code_table_ctr (slang_export_code_table *);
GLvoid slang_export_code_table_dtr (slang_export_code_table *);
slang_export_code_entry *slang_export_code_table_add (slang_export_code_table *);
/*
* _slang_find_exported_data()
*
* Parses the name string and returns corresponding data entry, data quantity and offset.
* Returns GL_TRUE if the data is found, returns GL_FALSE otherwise.
*/
GLboolean _slang_find_exported_data (slang_export_data_table *, const char *,
slang_export_data_entry **, slang_export_data_quant **, GLuint *);
#ifdef __cplusplus
}
#endif
#endif
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