Hi @jjhembd,
Thanks for getting back to me.
I did try the BillboardCollection approach (with an eyeOffset). Unless I am doing something wrong, this leads to the same visual result. See following sandcastle for reference.
I did start to look at writing a fully custom primitive, thereby hoping to be able to use a custom DrawCommand to specify the primitive as being drawn in the OVERLAY pass. But I have not been able to give this idea sufficient time to obtain a successful result. I am also a bit weary about this approach since it involves using Cesium’s internal apis.
Best regards,