Upgraded my project to Unity 6000.0.14f1 and got an issue with new Render Graph.
What i want to achieve:
I want to have this setup: Gameplay stuff → Black Panel (0.9 opacity) → UI Overlay
I use HDR materials/colors both in Gameplay (Gameplay Stuff) and UI (UI Overlay). The issue is that doing it this way the HDR color buffer will be shared between Gameplay and UI which results in this:
(Wrong) Shared buffer
The solution in Unity 2022 LTS:
Use camera stack where Gameplay is culled by Base camera, UI with Black Panel is culled by Overlay camera. The same solution was found here: Overlay in combination with HDR colors, (before Unity 6). Doing this the HDR buffer is split and scene is rendered correctly:
(Correct) Split HDR buffer using camera stack (before Unity 6)
Render Graph here:
If i disable Project Settings → Graphics → Compatibility Mode the problem is solved, but now i get this warning message every time i play the game. I don`t use new Render Graph in any way currently and it looks like it is a bug.
In summary (TL;DR):
Using new Render Graph feature it messes up the camera stack HDR color buffer which leads into unwanted graphics behavior. If there are any other ways to solve this issue without using second camera or solving it by using new Render Graph, please, let me know