Question How to prevent culled sprite backface from casting shadows

I want to prevent the culled backface in this example from casting shadows. I am using the UberSpriteShaders (https://github.com/traggett/UnitySpriteShaders).



Here it shows the shadow "through the back". I want the back never to cast any shadows. The next image shows the backface culling.



Is there a way to solve this? It would be huge for our game.

 

I've investigated regular meshes and it is the default behaviour for them. But not sprites it seems. Is it possible to replicate this effect for sprites?

 

It sounds like the shader hasn't been created with a custom ShadowCaster pass that takes in the _Cull variable. You will most likely have to edit the shader a bit to do that.

But before that, you can also try clicking the 3 dots at the top right of the inspector and go to Debug mode. Then you'll see hidden settings of the Sprite Renderer that normally people don't need to change, like the "Cast Shadows" value. Try setting it to On, as it may be currently set to Two-Sided.

 

Thanks for the response. I have tried both Two-sided and On, it seems to be the shader that isn't doing what you're saying. I'm quite the noob with shaders so it will take me a while to do the modification, but it makes sense.

 

If you get stuck, feel free to link the shader code if you can.

 

This was actually surprisingly easy. All it took is a simple change in

Name "ShadowCaster"
Tags { "LightMode"="ShadowCaster" }
...
Cull Off

To changing the last line to `Cull [_Cull]`