Probably - in general SkyDomes are for 3delight, where they can be set not to cast shadows. In Iray any geometry will cast shadows so, with rare exceptions where the doem has been set to be emissive so that it functions like an HDRI in Render Settings, it should go for Iray renders.
Comments
Probably - in general SkyDomes are for 3delight, where they can be set not to cast shadows. In Iray any geometry will cast shadows so, with rare exceptions where the doem has been set to be emissive so that it functions like an HDRI in Render Settings, it should go for Iray renders.
A few threads about using skydomes with Iray:
https://www.daz3d.com/forums/discussion/56724/iray-and-skydomes
https://www.daz3d.com/forums/discussion/63014/yet-another-iray-skydome-technique
https://www.daz3d.com/forums/discussion/233236/using-3delight-skydomes-in-iray