https://bugs.kde.org/show_bug.cgi?id=440386

--- Comment #8 from Fabian Vogt <fab...@ritter-vogt.de> ---
Git commit 11c7e7a64da3b39c89a1392f1f1112bc8c8ea8b7 by Fabian Vogt.
Committed on 09/08/2021 at 06:52.
Pushed by fvogt into branch 'master'.

scenes/opengl: Avoid blending for entirely opaque SurfaceItems

Blending is quite expensive especially with software rendering.
In the case of Firefox on Wayland, it uses a ARGB8888 buffer but marks the
entire surface as opaque, so the alpha channel can be ignored.

M  +3    -1    src/plugins/scenes/opengl/scene_opengl.cpp

https://invent.kde.org/plasma/kwin/commit/11c7e7a64da3b39c89a1392f1f1112bc8c8ea8b7

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