D-pad ←→ output mode D-pad ↑↓ resolution A split
B zoom Y freeze X hide stick / L R move the wipe
ZL ZR sharpness (keyboard: arrows, space, z, f, h, [ ], drag the wipe)
This demo needs a WebGL2 context and could not create one.
On Brewser this usually means the runtime is out of GPU memory — close other apps and reopen FSR Lab.