## Light.GetShaderInputType

### Introduced

v5.0

### Description

Returns the shader input type for a parameter. If the parameter cannot be connected to a shader, GetShaderInputType returns siUnknownParameterType.

### C# Syntax

    siShaderParameterType Light.GetShaderInputType( String Parametername );

### Scripting Syntax

    oReturn = Light.GetShaderInputType( ParameterScriptName );

### Return Value

siShaderParameterType

### Parameters

Parameter | Type | Description
--- | --- | ---
ParameterScriptName | String | Script name of parameter

### Examples

#### JScript Example

    // Create a scene with an object lit by a spotlight
    var root = Application.ActiveProject.ActiveScene.Root;
    var grid = root.AddGeometry( "Grid", "MeshSurface" );
    scale( grid, 2, 2, 2, siAbsolute );
    var cone = root.AddGeometry( "Cone", "MeshSurface" );
    translate(cone, 0, 1.3, 0 );
    var light = root.AddLight( "LightSpot", true, "SpotLight" );
    ApplyCns( "Position", light.interest, cone );
    ApplyCns( "Orientation", light.interest, cone );
    translate( light, 4, 6, 4);
    // List the names and input types of all parameters that support shader connections
    var eParams = new Enumerator(light.parameters);
    for ( ; !eParams.atEnd(); eParams.moveNext() )
    {
            var param = eParams.item();
            if (param.capabilities & siTexturable)
            {
                    var inputtype = light.GetShaderInputType(param.scriptname);
                    // This parameter supports a shader connection
                    logmessage( param.fullname + " has shader inputtype = " + ShaderParameterTypeAsText(type) );
            }
    }
    function ShaderParameterTypeAsText(type)
    {
            switch (type)
            {
                    case siUnknownParameterType : return "siUnknownParameterType";
                    case siBooleanParameterType : return "siBooleanParameterType";
                    case siColorParameterType : return "siColorParameterType";
                    case siDataParameterType : return "siDataParameterType";
                    case siIntegerParameterType : return "siIntegerParameterType";
                    case siLensParameterType : return "siLensParameterType";
                    case siLightParameterType : return "siLightParameterType";
                    case siMaterialParameterType : return "siMaterialParameterType";
                    case siMatrixParameterType : return "siMatrixParameterType";
                    case siModelParameterType : return "siModelParameterType";
                    case siRealTimeParameterType : return "siRealTimeParameterType";
                    case siReferenceParameterType : return "siReferenceParameterType";
                    case siScalarParameterType : return "siScalarParameterType";
                    case siShaderParameterType : return "siShaderParameterType";
                    case siStringParameterType : return "siStringParameterType";
                    case siStructParameterType : return "siStructParameterType";
                    case siTextureParameterType : return "siTextureParameterType";
                    case siTextureSpaceParameterType : return "siTextureSpaceParameterType";
                    case siVectorParameterType : return "siVectorParameterType";
                    default: return inputtype;
            }
    }
    //INFO : SpotLight.light.LightShader has shader inputtype = siColorParameterType
    //INFO : SpotLight.light.PhotonShader has shader inputtype = siColorParameterType
    //

### See Also

Shader.OutputType Parameter.ScriptName