A very good question.
Will we obtain any performance improvement by having eye tracking now? Are you sure? It’s almost certain that we will have a solid eye tracking module. But, does we obtain some real advantage of it, reducing requirements by using foveated rendering? It’s not the same at all.
Some weeks ago, I saw a video, sorry, I could’t find it, I think that was about Open XR, in which a representative of Epic said that, for the moment, they were not interested in adding foveated rendering to Unreal Engine, to the astonishment of Valve's representative. I think they were Oculus and Sony representatives in that conference, too.
I don’t know; on the other hand, the system of the company Varjo is based in foveated rendering to obtain near retinal resolution, and we have seen videos of several supposed steam vr demos of it.
Apart from the Varjo system, I couldn’t think in another one that could take more advantage of foveated rendering than the Pimax 8K and the future models of Pimax; even the Pimax 4K should have it.
@matthew.xu, @bacon: has the possibility been investigated with nVidia, AMD, or those in charge of the current graphics engines? Should not it be done already, since it will take time and does not interfere at all with the hardware works of the prototype?