Erick wrote:Objects with an Universal Material applied, while having stuffed something in the Transmission node there (like an image map, or RGB color) , are staying black in the Transmission Render Pass.
Does it need a special treatment to make is visible in this Render Pass, or is it "not working yet"?
Thank you and a happy new year.
The universal material does not currently have diffuse transmission in v4, the transmission pin's BTDF type is controlled by the "BSDF model" pin, which are all Specular BTDF models.
So you will find the specular transmission in the refraction pass like the specular material instead (following the specular material convention).