gluCheckExtension — determines if an extension name is supported
GLboolean gluCheckExtension( | const GLubyte * extName, |
const GLubyte * extString) ; |
extName
Specifies an extension name.
extString
Specifies a space-separated list of extension names supported.
gluCheckExtension
returns GLU_TRUE
if extName
is supported otherwise
GLU_FALSE
is returned.
This is used to check for the presence for OpenGL, GLU, or GLX extension names
by passing the extension strings returned by glGetString,
gluGetString, glXGetClientString,
glXQueryExtensionsString, or glXQueryServerString,
respectively, as extString
.
Cases where one extension name is a substring of another are correctly handled.
There may or may not be leading or trailing blanks in extString
.
Extension names should not contain embedded spaces.
All strings are null-terminated.
gluGetString, glGetString, glXGetClientString, glXQueryExtensionsString, glXQueryServerString
Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see https://khronos.org/registry/OpenGL-Refpages/LICENSES/LicenseRef-FreeB.txt.