[marcan_42]

I don't know exactly how much of Imgtech is still in these GPUs, but the coprocessor/firmware interface is Apple's own design, the AGX2 shaders are a completely new design, etc. I wouldn't be surprised if Apple only keep paying Imgtech because they have patents on TBDR, and there is otherwise none of their IP involved any more.

[AshamedCaptain]

When I say looted I mean "most of the people I knew who used to work in Imgtech now work at Apple", not any licensing agreement, which I would guess they keep just to avoid a nasty lawsuit.