glutextensionsupported(3glut) redhat man page | unix.com

glutExtensionSupported(3GLUT)					       GLUT					     glutExtensionSupported(3GLUT)

NAME
       glutExtensionSupported - helps to easily determine whether a given OpenGL extension is supported.

SYNTAX
       int glutExtensionSupported(char *extension);

ARGUMENTS
       extension Name of OpenGL extension.

DESCRIPTION
       glutExtensionSupported  helps  to  easily determine whether a given OpenGL extension is supported or not. The extension parameter names the
       extension to query. The supported extensions can also be determined with glGetString(GL_EXTENSIONS), but  glutExtensionSupported  does  the
       correct parsing of the returned string.

       glutExtensionSupported returns non-zero if the extension is supported, zero if not supported.

       There must be a valid current window to call glutExtensionSupported.

       glutExtensionSupported  only  returns information about OpenGL extensions only. This means window system dependent extensions (for example,
       GLX extensions) are not reported by glutExtensionSupported.

EXAMPLE
       Here is an example of using glutExtensionSupported:

	 if (!glutExtensionSupported("GL_EXT_texture")) {
	   fprintf(stderr, "Missing the texture extension!
");
	   exit(1);
	 }

       Notice that the name argument includes both the GL prefix and the extension family prefix (EXT).

SEE ALSO
       glutGet, glGetString

AUTHOR
       Mark J. Kilgard (mjk@nvidia.com)

GLUT
									3.7					     glutExtensionSupported(3GLUT)