Is there any way of setting the normals for a mesh to be per face? I am using only cubes which need only one normal per face and since I’m having issues with the 65k mesh vertex limit I want to have as few vertices as possible and reuse existing vertices whenever possible.
Note: breaking my mesh down to thousands of individual cube meshes is out of question since that is waay too resource intensive. Also the project this is used for is a minecraft-ish block world.
It seems like you know how to set face normals, and your question is really “Is there a way to set face normals that uses less space than splitting verts.”
I think the answer is No. Graphics cards use vertex normals. We wouldn’t split vets at edges to get flat faces unless it was the best way.
Now, there was an old setting for “flat faces” that tells the graphics card to use the normal of the first vert (based on the Tri array) for the entire face. It makes every single face in the entire model be flat-shaded, without needing any extra verts. But the model has to have been made with that in mind, and I’m not sure it’s even in newer cards, and don’t think Unity supports it.
you have to duplicate the vertices and give all 3 same normal to have face normals with acute shade change between faces.