Decals on mobile (URP/LWRP)?

Unity Engine
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1

So, for a school project, me and a couple of classmates have been developing a mobile AR game. For our game we need to use decals. I have done some googling and it seems that decals are not supported by the URP (or LWRP as we are still on Unity 2019.2). Is there an easy way to create decals for mobile games using the LWRP/URP or is our only option to switch to HDRP?

If we do switch to HDRP I gotta ask… does simply switching to HDRP negatively affect performance or does it only start affecting performance once you start to use more “advanced” graphics features (SSAO, Volumetrics etc.)? Are you able to scale back HDRP settings to be in-line with LWRP (as we are only interested in the decal feature from HDRP)?

Sorry if this is a dumb question. I am quite new to Unity.

2

HDRP will not perform well in a mobile AR game, frankly i’m not sure if it is even supported since it requires deferred rendering which is tough on mobile devices. Deferred rendering is also what allows decals to work. There might be some 3rd party solutions though, like this: GitHub - Kink3d/kDecals: Projection Decals for Unity's Universal Render Pipeline.

3

self advertising!
but Lux LWRP Essentials ship with deferred like decals.