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glutExtensionSupported(3GLUT)                       GLUT                       glutExtensionSupported(3GLUT)



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

SYNTAX
       #include <GLUT/glut.h>

       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  sys-tem system
       tem 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!\n");
           exit(1);
         }

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

SEE ALSO
       glutGet(3G), glGetString(3G)


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



GLUT                                                 3.7                       glutExtensionSupported(3GLUT)