Remove texturedata redundancy

[TheJeran]

When I switched to Texture arrays, I decided to move pointclouds data logic over to a single Uint8 array for convenience. But this takes up a lot of memory for large datasets and is essentially a waste since rendering pointclouds isn't feasible for such large datasets.

I will figure out a way to stitch the data of multiple textures back together.

[TheJeran]

Ah now I remember why I didn't do this. The buffer needs to be on unbroken piece of memory. Will need to come up with a unique solution