id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
20773	Enabling sun.java2d.opengl makes panning the map significantly more sluggish	nagisa	team	"I've been checking if I can make `josm` perform more smoothly on my machine and one of the options I came across in https://wiki.openstreetmap.org/wiki/JOSM/Installation was to enable the `sun.java2d.opengl` option.

Once this option is enabled, however, panning the map actually becomes much more sluggish (eyeballing I estimate ~3-5 fps, not sure how to check for sure) compared to software rendering with which panning occurs at a significantly smoother looking rates (20-30fps?)

This only had an imagery layer enabled, at a ""native"" projection for the imagery (i.e. no image reprojection should be occurring).

This is on a recent machine with an intel integrated graphics.

It would be great if panning the map was smooth and even better if enabling opengl rendering did not regress the performance (so that it was possible to set this option system wide for the other Java applications).

I would also at least qualify the recommendation in the referenced wiki page if it isn't known that it improves performance universally.

Version: JOSM/1.5 (17702 en_GB)"	enhancement	new	normal		Core	tested