Shader Graph URP - Planar refleciton for water

Unity Engine
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1

Hi all,

Could someone advise or point me to a tutorial that has a simple planar reflection setup using URP and shader graph.
I have already created a water shader, but am struggling to find a tutorial that covers a simple planar reflection, so at the moment I have the classic flipped geometry under the water to achieve a similar effect.

Any help appreciated
Regards

2

I found this (untested): https://unitylist.com/p/ykr/URP-Planar-Reflections
Edit: “Based on Unity’s URP Boat Attack Demo.”

3

Hey, thanks for the link some nice examples there.
The reflection example looks nice but seems like a costly way to achieve reflections. They are using a 2nd inverted camera for a render texture applied to the ground.
Works well but performance wise not the optimum.
Thanks again

1 Like
4

Yeah but planar reflections are exactly that… you can decrease the render scale of that 2nd camera and/or limit the objects reflected by using the layer system.

Other than planar reflections you can use reflection probes.

5

Thanks for the reply,
yes good point the layer idea would be come in handy, ill give it a go
Thanks again