cgGetParameterDirection(3)

NAME
cgGetParameterDirection - get a program parameter's direction

SYNOPSIS
  #include <Cg/cg.h>
  CGenum cgGetParameterDirection( CGparameter param );

PARAMETERS
The program parameter.

RETURN VALUES
Returns the direction of param.

Returns CG_ERROR if an error occurs.

DESCRIPTION
cgGetParameterDirection allows the application to distinguish program input parameters from program output parameters. This information is necessary for the application to properly supply the program inputs and use the program outputs.

cgGetParameterDirection will return one of the following enumerants : Specifies an input parameter. Specifies an output parameter. Specifies a parameter that is both input and output. If an error occurs.

EXAMPLES
to-be-written

ERRORS
CG_INVALID_PARAM_HANDLE_ERROR is generated if param is not a valid parameter.

HISTORY
cgGetParameterDirection was introduced in Cg 1.1.

SEE ALSO
cgGetNamedParameter, cgGetNextParameter, cgGetParameterName, cgGetParameterType, cgGetParameterVariability, cgSetParameterVariability