IMPORTANT: This is expected to break (practically guaranteed to break) in future versions and won't be supported at all. The post process pipeline is not a supported 'feature' and any issues regarding resources packs (such as this one) modifying it will almost certainly be ignored.
Consider this a "this snapshot only" thing.
None of this is official or endorsed, and this not an indication/hint/preview of anything to come. It's just a fun graphics sample :D
Use at your own risk.
This is very unoptimised and uses a terrible technique for estimating screen brightness.
Definitely needs a beefy graphics card!
Click here to download Tasteful Bloom.zip then copy into your resource pack folder.
Alternatively, click "View raw" of Tasteful Bloom.zip below.
Nice