GPU primitives

[HeliumAnt]

Second batch of gpu stuff, mainly getting primitives working. I have pretty much a full rewrite of the draw code upcoming, so this is to get mostly everything mostly working again before the big main batch.

• Moved primitives to gpu

• fixed whatever primitive wrapping was before (though I'm just starting to unravel the madness that is the wrapping code)

• Added draw depth for primitives