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/**
* \file extensions.h
* Extension handling.
*
* \if subset
* (No-op)
*
* \endif
*/
/*
* Mesa 3-D graphics library
*
* Copyright (C) 1999-2006 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
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#ifndef _EXTENSIONS_H_
#define _EXTENSIONS_H_
#include "glheader.h"
#ifdef __cplusplus
extern "C" {
#endif
struct gl_context;
struct gl_extensions;
extern void _mesa_enable_sw_extensions(struct gl_context *ctx);
extern void _mesa_one_time_init_extension_overrides(void);
extern void _mesa_init_extensions(struct gl_extensions *extentions);
extern GLubyte *_mesa_make_extension_string(struct gl_context *ctx);
extern GLuint
_mesa_get_extension_count(struct gl_context *ctx);
extern const GLubyte *
_mesa_get_enabled_extension(struct gl_context *ctx, GLuint index);
/**
* \brief An element of the \c extension_table.
*/
struct mesa_extension {
/** Name of extension, such as "GL_ARB_depth_clamp". */
const char *name;
/** Offset (in bytes) of the corresponding member in struct gl_extensions. */
size_t offset;
/** Minimum version the extension requires for the given API
* (see gl_api defined in mtypes.h). The value is equal to:
* 10 * major_version + minor_version
*/
uint8_t version[API_OPENGL_LAST + 1];
/** Year the extension was proposed or approved. Used to sort the
* extension string chronologically. */
uint16_t year;
};
extern const struct mesa_extension _mesa_extension_table[];
/* Generate enums for the functions below */
enum {
#define EXT(name_str, ...) MESA_EXTENSION_##name_str,
#include "extensions_table.h"
#undef EXT
MESA_EXTENSION_COUNT
};
/** Checks if the context supports a user-facing extension */
#define EXT(name_str, driver_cap, ...) \
static inline bool \
_mesa_has_##name_str(const struct gl_context *ctx) \
{ \
return ctx->Extensions.driver_cap && (ctx->Extensions.Version >= \
_mesa_extension_table[MESA_EXTENSION_##name_str].version[ctx->API]); \
}
#include "extensions_table.h"
#undef EXT
extern struct gl_extensions _mesa_extension_override_enables;
extern struct gl_extensions _mesa_extension_override_disables;
#ifdef __cplusplus
}
#endif
#endif
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