Use 1 material for atlas uv issue

Unity Engine
1

I’m trying to optimize assets to reduce build size and can’t figure out how you use 1 material for 4 objects with the UV’s correct on each when I have to set the uv offsets in the editor for the material/shader…but I have to create 4 materials, each with the correct offset for each object…creating the same 4 draw calls…

Basically I’m downloading assets, atlasing the textures, making the materials, and exporting to bring into my main project. Is there a way to do it without using a 3d modeling program?

2

yeah, you can just do it in code, if you want.

Build the atlas with PackTextures:

Create a new material for it. Assign it to your objects. Go through the objects and change the UV coordinates. PackTextures returns a Rect[ ] that has the location of the texture in the atlas - use that to adjust the UV on each object.