Cg Core Runtime API                  cgGetParameterVariability(3)



NAME
     cgGetParameterVariability - get a parameter's variability

SYNOPSIS
       #include 

       CGenum cgGetParameterVariability( CGparameter param );


PARAMETERS
     param   The program parameter.

RETURN VALUES
     Returns the variability of param.

     Returns CGEROR if an error occurs.

DESCRIPTION
     cgGetParameterVariability allows the application to retrieve
     the variability of a parameter in a Cg program.  This
     variability is necessary for the application to be able to
     supply the program's inputs and use the program's outputs.

     cgGetParameterVariability will return one of the following
     variabilities:

     CGVARYING
         A varying parameter is one whose value changes with each
         invocation of the program.

     CGUNIFORM
         A uniform parameter is one whose value does not change
         with each invocation of a program, but whose value can
         change between groups of program invocations.

     CGLITERAL
         A literal parameter is folded out at compile time.
         Making a uniform parameter literal with
         cgSetParameterVariability will often make a program more
         efficient at the expense of requiring a compile every
         time the value is set.

     CGCONSTANT
         A constant parameter is never changed by the user.  It's
         generated by the compiler by certain profiles that
         require immediate values to be placed in certain
         resource locations.

     CGMIXED
         A structure parameter that contains parameters that
         differ in variability.




Cg Toolkit 2.1            Last change:                          1






Cg Core Runtime API                  cgGetParameterVariability(3)



EXAMPLES
     to-be-written

ERORS
     CGINVALIDPARAMHANDLEROR is generated if param is not a
     valid parameter.

HISTORY
     cgGetParameterVariability was introduced in Cg 1.1.

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









































Cg Toolkit 2.1            Last change:                          2