Vegetation not being affected by Spot Light in URP

[haidumartocian]

Hello, i wonder if there is any way to make the vegetation being affected by Spot Lights (say i want to make a character to hold a flashlight during the night).  Currently i couldn't find a way to sort it out. Thanks in advance!

 

[edit] 

 

using URP, last version

In HDRP it works just great.

 

[Bryan]

Does your grass cast shadows? 

 

[haidumartocian]

3 hours ago, Bryan said:

Does your grass cast shadows? 

 

They are set to cast shadows, Two SIded, and they do, but only from light received from the Directional Light in the scene (sun/moon).

[haidumartocian]

can't edit my own comment, so sorry for adding new one.

 

Interesting thing is that trees and tree branches, and all tree elements (bushes) DO receive light from spotLight. Just details elements don't. Gras, fern, etc.

[Bryan]

I am still looking into this to see if I can come up with anything 

 

[Bryan]

Can you please tell me what grass are you using? 
Are you using Flora or something else? 

 

[haidumartocian]

On 12/13/2022 at 12:12 AM, Bryan said:

Can you please tell me what grass are you using? 
Are you using Flora or something else? 

 

URP, blank new project, building terrain and using Giant Forest Biome, or Alpine one. Same result. Didn"t touch the Flora settings. And trying to set up my FPS Controller to use a flashLight configured with a Unity Spot Light. 

[Bryan]

Can try increase the additional light count in urp asset higher and setting the lights render mode to be important rather than not or auto: 

[Bryan]

You also may want to check the normal map and set to 0 

[haidumartocian]

11 hours ago, Bryan said:

Can try increase the additional light count in urp asset higher and setting the lights render mode to be important rather than not or auto: 

Still, same result. The grass in the Editor, without PlayMode gets light with no problems, but in PlayMode or in Build, no lightning received from other than main directional light. 

 

[Isaac]

Hi @haidumartocian,

Try this shader package: Flora_URP_Update.zip

It contains a new way of lighting with subsurface that should support point and spot lights. 

The new variables can be controlled through these variables: 

Enalbing _GrassNormal should make the foliage shade better across the terrain. 

And _SSS_Effect and _SSS_Shadows control the intensity of the subsurface and backlit faces.

As well as using the _MaskMapMod to control the thickness, ao and smoothness (G = Thickness, B = AO, A = Smoothness).

[haidumartocian]

Hey, @Isaac. Your sollution is almost great, except for the fact that the veg looks a bit weird during the night time, using urp TimeOfDay from gaia. I will take a look to see if there is any adjustments to make, in order to make it look better. It looks grey, instead of green, when there is no sunlight on the grass. But yea, it gets any additional light from other sources 🙂 Thank you!