URP has a banding problem with HDR

Unity Engine
, ,
1

8181287--1065629--upload_2022-6-4_16-55-5.jpg
8181287--1065629--upload_2022-6-4_16-55-5.jpg1901×563 91.3 KB

In this screenshot, you can see multiple low opacity objects in the same position with HDR on. Notice how there’s strange-looking banding and discoloration in game view not present in the scene view. The transparent objects make this issue apparent but this subtly affects all colors on the screen. (Even the floor and wall have subtle banding)

8181287--1065632--upload_2022-6-4_16-59-54.png
8181287--1065632--upload_2022-6-4_16-59-54.png1904×562 106 KB

In this screenshot, you can see the same scene with HDR off. Both scene view and game view match in colors and there’s banding present in the transparent objects as expected. No issues here. (Notice how there’s less banding on the floor and wall in comparison to HDR on)

My desired look would have to be scene view with HDR on.

Does anyone know a fix for this or is it a bug with URP?

1 Like
2

Update: apparently this is a problem because the player/game view’s HDR’s color buffer precision is 32 bits.
In 2022.2.0a9 and above lets you change the “HDR’s color buffer precision” to 64 Bits in the debug view of the Render Pipeline asset which fixes this issue.

6 Likes