NAME
cgIsParameter - determine if a parameter handle references a valid parameter
SYNOPSIS
#include <Cg/cg.h> CGbool cgIsParameter( CGparameter param );PARAMETERS
- param
The parameter handle to check.
RETURN VALUES
Returns CG_TRUE if param references a valid parameter object.
Returns CG_FALSE otherwise.
DESCRIPTION
cgIsParameter returns CG_TRUE if param references a valid parameter object. cgIsParameter is typically used for iterating through the parameters of an object. It can also be used as a consistency check when the application caches CGparameter handles. Certain program operations like deleting the program or context object that the parameter is contained in will cause a parameter object to become invalid.
EXAMPLES
if (cgIsParameter(param)) { /* do something with param */ } else { /* handle situation where param is not a valid parameter */ }ERRORS
None.
HISTORY
cgIsParameter was introduced in Cg 1.1.
SEE ALSO