How much memory does Geometry use? (Mobile)

Hi,

I have an .obj file that has around 250k verts and ways in about 30mb on disk.

What would the memory footprint be in system memory when running the game?

Thanks,
David

It depends. How many triangles? UV sets? Normals? Tangents? Vertex colors? A vertex by itself, without considering any of the other things mentioned, is 3 floats, so 12 bytes. A triangle index is 2 bytes, uv is 8 bytes, normal is 12 bytes, tangent 16 bytes, color 4 bytes.