HDRP Decal - Ignore a layer

Is is possible to setup Decals in such a way so they would ignore objects from specific layers and do not project on them?

Maybe not based on layers, any alternative approach?

 

Unfortunately there isn't anything like that right now. HDRP decals are fairly limited in their dynamic uses right now. Given that they draw on everything, and don't have an angle limit, it feels like they're intended to be used as extremely thin posters on a wall, rather than dynamically placed objects with significant thickness. My decal use is mainly for showing bullet/explosion effects on objects, and it looks generally terrible if I create a decal on anything but a completely flat surface:



The only approach I've found to limiting it is to make the decal as thin as possible, though that makes it hard to use dynamically, as you have to be very precise about your placement.

 

On every material in HDPR you have a checkbox 'Receive decals'.
Is checked by default so just uncheck it.
But yes... this is odd... should be done via layers to tell the engine where to put decals and where not to.

 

Has there been any changes to this approach as this seems like it's going to create some issues/headaches in the long run?

 

This is changed. In HDRP 10.x.x for Unity 2020.2 there are now Decal Layers which you can specify on objects and decals for them to use the same layer.



https://github.com/Unity-Technologi...lines.high-definition/Documentation~/Decal.md