NAME

cgGetDependentAnnotationParameter - returns one of the parameters that a annotation's value depends on.

SYNOPSIS

  #include <Cg/cg.h>

  CGparameter cgGetDependentAnnotationParameter(CGannotation ann, int index);

PARAMETERS

ann

Specifies the annotation handle.

index

Specifies the index of the parameter to return.

DESCRIPTION

Annotations in CgFX files may include references to one or more effect parameters on the right hand side of the annotation that are used for computing the annotation's value. cgGetDependentAnnotationParameter returns one of these parameters, as indicated by the index given. cgGetNumDependentAnnotationParameters can be used to determine the total number of such parameters.

This information can be useful for applications that wish to cache the values of annotations so that they can determine which annotations may change as the result of changing a particular parameter's value.

ERRORS

CG_INVALID_ANNOTATION_HANDLE_ERROR is generated if ann does not refer to a valid annotation.

CG_OUT_OF_ARRAY_BOUNDS_ERROR is generated if index is less than zero or greater than the number of dependent parameters, as returned by cgGetNumDependentStateAssignmentParameters.

SEE ALSO

cgGetDependentStateAssignmentParameter, cgGetFirstAnnotation, cgGetNamedAnnotation, cgGetNumDependentAnnotationParameters