[22:07] <zgreg> hi
[22:08] <zgreg> unity's dash blur is still a bit slow for me
[22:08] <zgreg> I have taken a look at the blur shaders, and it does a *huge* amount of texture lookups
[22:09] <zgreg> IIRC it does 29 lookups to process a single pixel for both vertical and horizontal filtering, so in total almost 60 lookups for one output pixel!
[22:10] <zgreg> this seems kind of insane...
[22:10] <zgreg> also, I noticed there's a more efficient blur implementation in nux already
[22:10] <zgreg> it uses linear sampling to reduce the number of needed texture lookups
[22:11] <zgreg> why is this not used?