[HL2] HDR on native ultrawide 21:9 is drawn in a small corner

[rhtenhove]

This is Half Life 2 on Kubuntu 24.10, using wayland and Plasma 6.1.

Operating System Version:

Ubuntu 24.10 (64 bit)
Kernel Name: Linux
Kernel Version: 6.11.0-9-generic
X Server Vendor: The X.Org Foundation
X Server Release: 12401002
X Window Manager: KWin
Steam Runtime Version: steam-runtime_0.20241024.105847

Video Card:

Driver: NVIDIA Corporation NVIDIA GeForce RTX 4050 Laptop GPU/PCIe/SSE2
Driver Version: 4.6.0 NVIDIA 560.35.03
Desktop Color Depth: 24 bits per pixel
Monitor Refresh Rate: 74 Hz
VendorID: 0x8086
DeviceID: 0xa7a0
Revision Not Detected
Number of Monitors: 2
Number of Logical Video Cards: 1
Primary Display Resolution: 5160 x 2160
Desktop Resolution: 7320 x 3982
Primary Display Size: 31.50" x 13.19" (34.13" diag), 80.0cm x 33.5cm (86.7cm diag)
Primary VRAM: 6141 MB

Problem

When playing on the native resolution on my 21:9 - 5160 x 2160 monitor, with HDR (full or bloom) enabled, the effect is drawn in a small top left corner of the screen.

HDR	non HDR

This native resolution is only listed under 16:9, no 21:9 option in the aspect ratio list, however the aspect ratio is not distorted.

To have HDR render correctly, I have to use any non-native resolution.

I do miss the HDR effect during gameplay! Any solution is highly appreciated 😄