NAME
    cgGetParentType - gets a parent type of a child type

SYNOPSIS
      #include <Cg/cg.h>

      CGtype cgGetParentType( CGtype type,
                              int index );

PARAMETERS
    type    The child type.

    index   The index of the parent type. index must be greater than or
            equal to 0 and less than the value returned by
            cgGetNumParentTypes.

RETURN VALUES
    Returns the number of parent types.

    Returns NULL if there are no parents.

    Returns CG_UNKNOWN_TYPE if type is a built-in type or an error is
    thrown.

DESCRIPTION
    cgGetParentTypes returns a parent type of type.

    A parent type is one from which the given type inherits, or an interface
    type that the given type implements. For example, given the type
    definitions:

        interface myiface {
            float4 eval(void);
        };

        struct mystruct : myiface {
            float4 value;
            float4 eval(void ) { return value; }
        };

    mystruct has a single parent type, myiface.

    Note that the current Cg language specification implies that a type may
    only have a single parent type -- an interface implemented by the given
    type.

EXAMPLES
    *to-be-written*

ERRORS
    CG_OUT_OF_ARRAY_BOUNDS_ERROR is generated if index is outside the proper
    range.

HISTORY
    cgGetParentType was introduced in Cg 1.2.

SEE ALSO
    the cgGetNumParentTypes manpage

