GNOME Bugzilla – Bug 734429
Spinner has ghosting artifacts (alpha issue with xcursorgen)
Last modified: 2020-11-26 14:41:17 UTC
Created attachment 282816 [details] screenshot The pointer spinner doesn't look good in 3.13.x - the rendering is rough, and the animation is jerky. Screenshot attached.
For the jaggies/aliasing - there is some sort of alpha premultiplication issue when converting inkscape-generated PNGs using the xcursorgen utility. As for the jerkiness, the animation remains having the same number of frames, but for the updated design it will probably need to double to remain feeling fluid.
Doubled the framerate. Aliasing might still be an issue although I tried to minimize the edge contrast
Created attachment 282862 [details] [review] cursors: improve spinner - double the framerate - try avoiding aliasing
The aliasing is still very apparent. Updating the title.
I briefly looked at this at some point, but couldn't really see the artifacts, or anything wrong with the cursorgen code dealing with alpha.
Created attachment 286423 [details] xcursor vs PNG/fake Turns out taking a screenshot of this is hard. The best I could come up is taking a photo. The actual cursor is on the left, you see a lot of aliasing/ghosting around the icon. The right hand one is what gnome-screenshot will fake it and is what the input PNG looks like and the intended look is.
Resetting assignee to default to avoid cookie-licking (see bug 744024). Jimmac: If you actively and realistically plan to work on this, please set yourself as assignee again so this ticket will be shown on top of your user page at https://bugzilla.gnome.org/page.cgi?id=describeuser.html Thanks!
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