Determines if an extension name is supported.
Returns GL_TRUE if extensionName is supported otherwise GL_FALSE is returned.
gluCheckExtension is used to check for the presence for OpenGL, GLU or GLX extension names by passing the extension strings returned by glGetString, gluGetString, /*see cref="glXGetClientString" />*/, /*see cref="glXQueryExtensionsString" />*/, or /*see cref="glXQueryServerString" />*/, respectively, as extensionString.
Returns GL_TRUE if extensionName is supported otherwise GL_FALSE is returned.
NOTES
Cases where one extension name is a substring of another are correctly handled.
There may or may not be leading or trailing blanks in extensionString.
Extension names should not contain embedded spaces.
All strings are null-terminated.
Glu Class | Tao.OpenGl Namespace | glGetString | gluGetString