Who Is this for? CRT Enthusiasts, software & hardware developers, emulator authors, all of who wish to reduce display motion blur of 60 years of l

CRT Simulation in a GPU Shader, Looks Better Than BFI

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2024-12-25 01:30:14

Who Is this for? CRT Enthusiasts, software & hardware developers, emulator authors, all of who wish to reduce display motion blur of 60 years of legacy 60fps 60Hz content with softer flicker than BFI.

People who have seen a CRT tube in motion, know how shockingly clear motion they are. Blur Busters is born of display motion blur reduction, and so we’ve been fans of all kinds of motion blur reduction techniques.

Between myself and Timothy Lottes (ex-NVIDIA ex-AMD), we have come up with a breakthrough algorithm for simulating a CRT tube, now released on shadertoy and github, with the following features:

Before running these animations, they may not look good on all displays; more Hz is better. These real time versions requires a performant GPU. You may see ugly erratic flicker if your GPU is too slow. Your display motion blur reduction will be limited by by the native:simulated Hz ratio. More Hz the merrier.

For higher Hz displays (large native:simulated Hz ratio), the raster can be configured with a quicker simulated phosphor fade for lower MPRTs: