#!/usr/bin/zsh
nvidia_dev='/dev/nvidia0'
lockfile='/tmp/compton.lock'
if [[ -r $lockfile ]]; then
	read pid < $lockfile
	kill $pid
	rm $lockfile
else
	if [[ -e $nvidia_dev ]]; then
		vsync_backend='opengl'
	else
		vsync_backend='drm'
	fi
	compton --vsync $vsync_backend --unredir-if-possible --paint-on-overlay -cGCb -t-5 -l-5 -r4 -o.55 -m.95
	pid=$(pidof compton)
	if [[ -n $pid ]]; then
		printf '%s' $pid > $lockfile
	fi
fi
exit 0