Determines if an extension name is supported.
OpenGL C bindings library: libGL.a
GLboolean gluCheckExtension( const GLubyte *extName, const GLubyte *extString )
gluCheckExtension returns GL_TRUE if extName is supported otherwise GL_FALSE is returned.
This is used to check for the presence for OpenGL, GLU or GLX extension names by passing the extensions strings returned by glGetString , gluGetString , or glXGetClientString , respectively, as extString .
| extName | Specifies an extension name. |
| extString | Specifies a space-separated list of extension names supported. |
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.
| /usr/include/GL/gl.h | Contains C language constraints, variable type definitions, and ANSI function prototypes for OpenGL. |
The glGetString subroutine, gluGetString subroutine, glXGetClientString subroutine.