Sure, but you can't really avoid rerendering every frame with OpenGL. (Not without a lot of tricky caching, at least, which has it's own costs). Not saying th

Sure, but you can't really avoid rerendering every frame with OpenGL. (Not without a lot of tricky caching, at least, which has it's own costs). Not saying this is impractical (Personally, I wouldn't bet on it, but I'm sure it's fine for some things), so much as that the cost model here is fundamentally different.