I note that the Level Blueprint is calling:
r.setres 2560x1440
r.ScreenPercentage 150
(8 294 400 rendered pixels per frame, before downsampling)
I’m new to Unreal, but if I understand correctly, r.setres should be the actual resolution of the display panels,
and r.ScreenPercentage is used to set the offscreen render resolution which is then downsampled to the ‘setres’ resolution for output.
According to Valve
http://.vlachos.com/graphics/Alex_Vlachos_Advanced_VR_Rendering_GDC2015.pdf
panel resolution is 2160x1200, and oversampling is recommended to be 1.4x.
So, shouldn’t these be:
r.setres 2160x1200
r.ScreenPercentage 140
(5 080 320 rendered pixels per frame, before downsampling)
With this change, we are only rendering 61% as many pixels, which has got to be good for performance!
Even if you wanted to set r.ScreenPercentage to higher than 140, r.setres should always match the panel, shouldn’t it?