This is an optmization, you can set "r.FastBlurThreshold" to a large number e.g. r.FastBlurThreshold 1000
and it goes away. We might be able to do better but the cvar is the current solution (scalability setting).
As a blooming object (the sun in this repro case) leaves the view via the top-edge of the screen, some noticeable banding occurs.
Happens in both PIE and -game.
Found on:
//UE4/Main CL-2991400
//UE4/Release-4.12 CL-2991121
4.11 Binary
Result: As the sun goes out of view, the bloom effect has some noticeable banding happening.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-31390 in the post.
| 0 |
| Component | UE - Graphics Features |
|---|---|
| Affects Versions | 4.12, 4.13 |
| Target Fix | 4.13 |
| Created | May 27, 2016 |
|---|---|
| Resolved | May 31, 2016 |
| Updated | Apr 27, 2018 |