es2gears_wayland is requesting two frame callbacks per frame, and then reporting a framerate double of what it is actually drawing, see this log: [1648215.456] -> wl_surface@6.frame(new id wl_callback@11) [1648215.507] -> wl_surface@6.frame(new id wl_callback@12) [1648215.552] -> wl_surface@6.attach(wl_buffer@14, 0, 0) [1648215.577] -> wl_surface@6.damage(0, 0, 2147483647, 2147483647) [1648215.654] -> wl_surface@6.commit() [1648226.261] wl_display@1.delete_id(11) [1648226.318] wl_display@1.delete_id(12) [1648226.345] wl_callback@11.done(1097662536) [1648226.368] wl_buffer@9.release() [1648226.378] wl_callback@12.done(1097662536) [1648227.256] -> wl_surface@6.frame(new id wl_callback@12) [1648227.327] -> wl_surface@6.frame(new id wl_callback@11) [1648227.345] -> wl_surface@6.attach(wl_buffer@9, 0, 0) [1648227.373] -> wl_surface@6.damage(0, 0, 2147483647, 2147483647) [1648227.473] -> wl_surface@6.commit() [1648247.237] wl_display@1.delete_id(12) [1648247.288] wl_display@1.delete_id(11) [1648247.309] wl_callback@12.done(1097662553) [1648247.341] wl_buffer@14.release() [1648247.356] wl_callback@11.done(1097662553) This is apparently caused by the fix for bug 101814, see also https://gitlab.gnome.org/GNOME/mutter/issues/55
Also seen in gnome-shell on Ubuntu 18.04: $ es2gears_wayland EGL_VERSION = 1.4 (DRI2) vertex shader info: fragment shader info: info: 597 frames in 5.0 seconds = 119.138 FPS 600 frames in 5.0 seconds = 119.880 FPS 598 frames in 5.0 seconds = 119.481 FPS 600 frames in 5.0 seconds = 119.952 FPS 600 frames in 5.0 seconds = 119.880 FPS 600 frames in 5.0 seconds = 119.880 FPS 596 frames in 5.0 seconds = 119.105 FPS But strangely not in weston: $ es2gears_wayland EGL_VERSION = 1.4 (DRI2) vertex shader info: fragment shader info: info: 301 frames in 5.0 seconds = 60.176 FPS 300 frames in 5.0 seconds = 59.952 FPS 300 frames in 5.0 seconds = 59.952 FPS 300 frames in 5.0 seconds = 59.964 FPS 300 frames in 5.0 seconds = 59.928 FPS 300 frames in 5.0 seconds = 59.964 FPS
One 'frame' will be requested by the EGL implementation and another by es2gears. That's fine, as neither will receive the other's events.
Also, on a real 120Hz display, es2gears_wayland reports 240 FPS. Verified in both gnome-shell and weston.
-- GitLab Migration Automatic Message -- This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity. You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/mesa/demos/issues/12.
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.