Yeah, Jezze did a lot of excellent updates regarding vector fx in HLSL and the vector renderer in general.
I guess your video shows the new improvements for the vector length attenuation.
As a tip for anyone who plays Tempest on a horizontal monitor, i suggest to increase the RGB Gamma (not the Gamma setting under Brightness and Contrast).
That way you can make the vector lines thinner and bringing out the points even more. The overall picture will get a little darker, which you can compensate with Brightness, Contrast, Gamma settings.
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