Reflection vector in decal domain is not working.

Hello.

Reflection vector output seems changed(not correct) from 4.11

By setting material like below,

And apply it on decal actor, you can see:

That become black after 4.11 this is still reproduced in CL3023268 main branch.

Colorful cube next to decal material has surface domain material for compare.

Hi Dongsik,
Thanks for reporting this. There is a bug with the world space position coming through as zero for deferred decals. That’s likely to be the cause of the issue you’re seeing here. The bug is UE-31976.

Hello Ben,

One more question. This one is from one of the licensee.

In the particle(ribbon), Is CameraVectorWS making direction of each ribbons when I set RenderAxis to Camera Up? I’m adding this issue to here because it has same engine versions and camera vector. (4.11 and above, the direction of ribbons are not same as previous versions.)

I think the CameraVectorWS issue is particular to decal pixel shaders, so it probably isn’t the cause of this.

I think it would be useful to get some more information on what’s different between ribbons in 4.10 and 4.11 - and possibly raise this as a separate question.