2D HDR makes scenes significantly darker

[ArseniyMirniy]

Tested versions

Godot 4.3 Stable

System information

Windows 10 x64, RTX 3060 Ti, Ryzen 5600x

Issue description

Enabling “HDR” makes everything (and especially HDRi) significantly darker. I've tried several methods to locate any relevant side of the issue (physical light units, auto exposure, etc). Nothing changes that, it's just right away darker. No screen shaders are applied. It also compresses the image significantly (almost making it look like 6-bit)

Steps to reproduce

Select 3D scene
Enable 2D HDR

Minimal reproduction project (MRP)

N/A

[clayjohn]

Can you provide more information and an MRP?

For example, what is in your scene? How can someone else reproduce this issue? What renderer are you using? What environment settings do you have? What format is the texture you are using? are you drawing it with a shader? or a built in material?

Ideally you would provide an MRP that reproduces the issue so contributors can reproduce the issue and investigate a solution

[ArseniyMirniy]

Can you provide more information and an MRP?

For example, what is in your scene? How can someone else reproduce this issue? What renderer are you using? What environment settings do you have? What format is the texture you are using? are you drawing it with a shader? or a built in material?

Ideally you would provide an MRP that reproduces the issue so contributors can reproduce the issue and investigate a solution

1. Render is Forward+
2. My scene consists of Environment + EXR HDR (link) + Camera
3. No shaders, no canvas items, no meshes over the camera
4. The darkening affects the main viewport of Godot engine.
5. To reproduce, just use ANYTHING in 3D scene, meshes are also getting darker
6. I was using ACES, but it can be reproduced with any mode
7. I was using auto exposure, but on the shot below it's disabled

Here's linear colors mode in the ENV node + sphere with StandardMaterial3D

[clayjohn]

Thank you for your response! That really helps.

One more question:

Did you restart the editor after turning on HDR 2D?

[ArseniyMirniy]

Thank you for your response! That really helps.

One more question:

Did you restart the editor after turning on HDR 2D?

Yes, since to apply 2D HDR you have to click on [Save and Restart the Editor]