Asynchronous projection could improve the perceived framerate, while not actually rendering more frames, just translating/rotating (simple matrix multiplication) the last rendered frame and projecting it (probably possible at many times the refreshrate, even on very old/low end hardware).

Describe the solution you'd like
Pull and transform the rendered (world+entites)frame in the framebuffer (position/rotation of it need to be saved somewhere too) at the refreshrate, then apply effects (distortions/compositing) and GUI and push it to the screen.

Additional context
Possible options might be:

• Number of layers
• overdraw (to fix black borders)
• border fix type (stretch, +blur)

Just thought that it might make sense here (after watching the LTT vid).

This wouldn't be possible in an OpenGL context like Minecraft, so this likely won't make it to Sodium unless we someday get a Vulkan context working or something like that, which would be pretty far in the future.

Make request on page for Vulkanmod then