UsdImagingDataSourceAttributeNew doesn't support color4

[robpieke]

In dataSourceAttribute.cpp the _FactoryMap has entries for Color3f and Color3fArray but not Color4f or Color4fArray. The result of this is that any shading node which has a color4f parameter will not have a value generated.

For example:

        def Shader "mtlxover1"
        {
            uniform token info:id = "ND_over_color4"
            color4f inputs:bg = (0.9, 0.1, 0.6, 1)
            color4f inputs:fg.connect = </materials/collect1/mtlxtiledimage1.outputs:out>
            color3f outputs:out
        }

In this case, the bg parameter ends up generating no value.

[jesschimein]

Filed as internal issue #USD-10149

[robpieke]

The _FactoryMap is also missing:

     map[SdfValueTypeNames->Double3] = _FactoryImpl<GfVec3d>;
     map[SdfValueTypeNames->Int64Array] = _FactoryImpl<VtArray<int64_t>>;
     map[SdfValueTypeNames->Int64] = _FactoryImpl<int64_t>;
     map[SdfValueTypeNames->Vector3dArray] = _FactoryImpl<VtArray<GfVec3d>>;
     map[SdfValueTypeNames->Vector3d] = _FactoryImpl<GfVec3d>;

This is not meant to be a comprehensive list ... just the ones we've noticed so far.