xBR algorithm tutorial

RetroArch Additions Shaders
#321

I’ve got a bilateral filter running to combine jinc2 with xBR (standard). On low gradient regions it behaves like jinc2 with all color nuances. On high gradient edges it behaves like xbr. So it gets the best of both worlds.

Here are some screenshots:

002-250429-075118-250501-131058 002-250429-075118-250501-131054 002-250429-075118-250501-131050 002-250429-075118-250501-131046 002-250429-075118-250501-131041 003538-250501-090001 003538-250430-184255

It was uploaded to the repo: https://github.com/libretro/slang-shaders/pull/700/files

It isn’t just that, the same framework may be used with any other shader. Obviously some combinations don’t work well.

6 Likes
#322

Fonts are pretty, it’s hard to get them right. I’ll test it later, but it already looks interesting. Seems more on the balanced side, which is advantageous to be an agnostic alternative for different kinds of contents.

2 Likes
#323

Any reason for going back to working in gamma space?

1 Like
#324

Read this topic and you’ll understand.

I’ll probably return to linear gamma the same way I did for some edge-smoothing non-separable filters in this update from yesterday.

2 Likes