glIsQuery — determine if a name corresponds to a query object
GLboolean glIsQuery( | GLuint | id); |
glIsQuery returns GL_TRUE if id is currently the name of a query object.
If id is zero, or is a non-zero value that is not currently the
name of a query object, or if an error occurs, glIsQuery returns GL_FALSE.
A name returned by glGenQueries, but not yet associated with a query object by calling glBeginQuery, is not the name of a query object.
GL_INVALID_OPERATION is generated if glIsQuery is executed
between the execution of glBegin and the corresponding
execution of glEnd.
Copyright © 2005 Addison-Wesley. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.
