[Miraste]

> I don’t think the SSD but rather the GPU would be doing the tesselation...

Ha, I phrased that badly. I meant that, if the high-poly models can't all be stored in VRAM at once, is the SSD fast enough to load them back onto the GPU every frame?

[alkonaut]

If the tesselation is performed on the GPU (surfaces uploaded to GPU in some non-triangle representation e.g image geometry/SDFs/patches) then I don’t think it’s ever viable to have the tesselated triangles loaded back from GPU memory even to RAM (never mind disk). This isn’t a lot of data. 2 triangles/1 vertex per pixel is just 8K triangles and 4K vertices every frame, that can be overwritten each frame. This is tiny. It’s <1MB!

[Miraste]

Ah, that makes sense. I was thinking the problem lay in loading the original meshes, but I didn't consider they could be using a smaller non-triangle format. I really hope they share more about how this works.