Poor OpenGL performance under Xorg

Jan Beich jbeich at FreeBSD.org
Fri May 21 16:02:12 UTC 2021

While investigating Wayland performance for light gaming I've noticed an
anomaly with OpenGL under Xorg which doesn't translate to Vulkan under
Xorg or OpenGL under Xwayland. With DRI3 both Xwayland and Xorg should
be similar, especially in fullscreen when compositing is disabled.

See https://reviews.freebsd.org/P501

Is this a flaw in benchmark or GPU driver?

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