[zednaked]

Problem

On Linux (Wayland, Vulkan: Mesa RADV and NVIDIA 615), the whole window shows washed out in the dark interface. The surround that SURROUND sets to #252525 shows as #6A6A6A on screen (measured with grim), and the bars and side bar are lifted the same way.

frame::configure takes the first non-sRGB format the surface offers. Through wgpu, that is Rgba16Float on these drivers (log: surface 1920×1080 Rgba16Float Mailbox Auto). The compositor reads a float surface as linear, but the colours drawn on it are already sRGB-encoded. 37/255 read as linear shows as 106/255, which is exactly what's on screen.

Fix

Prefer Bgra8Unorm, then Rgba8Unorm, where the surface offers them, and fall back to the old choice otherwise. They are still non-sRGB formats, so nothing is re-encoded, as the function's comment asks.

Checked

• Built v0.0.4-beta with only this change (same diff) on Arch, Hyprland, AMD Renoir (RADV). The log now shows Bgra8Unorm, and the surround measures exactly #252525 on screen.
• cargo check -p procraft-core and cargo fmt --check pass on main.
• I couldn't test macOS or Windows. There, the order only changes if the surface offers an 8-bit format after a float one.

🤖 Generated with Claude Code