gl.h File Reference

Provides an implementation of a GL dispatch layer using either global function pointers or a hidden vtable. More...

#include "epoxy/common.h"
#include "epoxy/gl_generated.h"

Functions
bool	epoxy_has_gl_extension (const char *extension)
	Returns true if the given GL extension is supported in the current context. More...
bool	epoxy_is_desktop_gl (void)
	Checks whether we're using OpenGL or OpenGL ES. More...
int	epoxy_gl_version (void)
	Returns the version of OpenGL we are using. More...

Detailed Description

Provides an implementation of a GL dispatch layer using either global function pointers or a hidden vtable.

You should include <epoxy/gl.h> instead of <GL/gl.h> and <GL/glext.h>.

Function Documentation

epoxy_gl_version()

int epoxy_gl_version

(

void

)

Returns the version of OpenGL we are using.

The version is encoded as:

version = major * 10 + minor

So it can be easily used for version comparisons.

Returns

The encoded version of OpenGL we are using

epoxy_has_gl_extension()

bool epoxy_has_gl_extension

(

const char *

ext

)

Returns true if the given GL extension is supported in the current context.

Parameters

ext	The name of the GL extension

Returns

true if the extension is available

Note

that this function can't be called from within glBegin() and glEnd().

See also

epoxy_has_egl_extension()

epoxy_has_glx_extension()

epoxy_is_desktop_gl()

bool epoxy_is_desktop_gl

(

void

)

Checks whether we're using OpenGL or OpenGL ES.

Returns

true if we're using OpenGL