Issues with the back of sprites lighting being weird

Unity Engine
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1

Hi there, I’m pretty new to shaders and I’m not even sure if it’s a shader problem or not but I’m having a weird lighting effect on the back side of my sprites.

I’m using 2D sprites in a 3D environment (kinda like Octopath Traveler) and I followed this tutorial to get a shader graph to light up the sprites and let them cast shadows:

But the issue I’m having is that any sprite that isn’t billboarded and I spin around to the back of has weird lighting.

Here is the front side of a sprite, the light source is pointing at the front:

7465580--916798--Front.png
7465580--916798--Front.png663×523 5.72 KB

Here is the back:

7465580--916796--Back.png
7465580--916796--Back.png779×608 6.42 KB

And here is my shader graph based on that video tutorial:

7465580--916799--Shader Graph.png
7465580--916799--Shader Graph.png1206×829 69.8 KB

I’m really hoping someone can help me fix this and if any other info is needed let me know, thanks in advance!

2

Your normal’s coordinate space isn’t set to object space like in the tutorial, but to tangent space. That might solve your issue? You can change it in the graph settings.

3

Yep! That did it, thanks! I messed that up since they look of the shader graph nodes has changed a bit since the video.

I had to make a different shader graph/material for my player than for other stuff though with one set as object space and one set as tangent space, but now it’s working as intended, thank you!