Background Opacity behavior

[jackplus-xyz]

Hi,

When using a light background and setting background_opacity to a value less than 1.0, unlike other terminal emulators, it seems like the “Linear Dodge” blend modes. I've tried tinkering with background_tint and transparent_background_colors but they don't seem to make a difference.

Is this the intended behavior or design decision based on performance?

Screenshots

• kitty

• Ghostty

• Alacritty

[kovidgoyal]

Background blending isnt performed by the application, the application doesn't know whats behind it, that blending happens in the compositor. It's likely based on some attribute of the surface being blended, but I have never been interested enough to deep dive into it.