cgGetParameterSemantic
Keywords: cgGetParameterSemantic, NVIDIA, NVIDIA Cg Toolkit, Cg Toolkit, Shader, Shader Programming, GPU Shader Programming, GPU Program

> ## Name

> cgGetParameterSemantic - get a parameter's semantic

> ## Synopsis

>     #include <Cg/cg.h>

>     const char * cgGetParameterSemantic( CGparameter param );

> ## Parameters

> param
>   The parameter.

> ## Return Values

> Returns the null-terminated semantic string for the parameter.

> Returns NULL if an error occurs.

> ## Description

> cgGetParameterSemantic allows the application to retrieve the semantic of a parameter in a Cg program. If a uniform parameter does not have a user-assigned semantic, an empty string will be returned. If a varying parameter does not have a user-assigned semantic, the semantic string corresponding to the compiler-assigned resource for that varying will be returned.

> ## Examples

> to-be-written

> ## Errors

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

> ## History

> cgGetParameterSemantic was introduced in Cg 1.1.

> ## See Also

> cgSetParameterSemantic, cgGetSemanticCasePolicy, cgSetSemanticCasePolicy, cgGetParameterResource, cgGetParameterResourceIndex, cgGetParameterName, cgGetParameterType