Parallel Graphics::Framebuffer demonstrations
Copy the MCE demonstrations to the Graphics::Framebuffer examples folder and run from there.
many_boxes.pl - Draw many boxes using MCE::Hobo many_ellipses.pl - Draw many ellipses using threads many_lines - Draw many lines using MCE::Child mcechnl_primitives.pl - Based on threaded_primitives.pl  mcehobo_primitives.pl - Based on threaded_primitives.pl  mcehobo_slideshow.pl - Based on threaded_slidshow.pl 
How to enable the framebuffer on CentOS 7.
The Graphics::Framebuffer module requires the framebuffer to work. This is how I enabled the framebuffer inside a CentOS 7 virtual machine.
Perform steps as root: 1. systemctl set-default multi-user.target 2. append vga=0x317 to GRUB_CMDLINE_LINUX line in /etc/default/grub.conf 3. grub2-mkconfig -o /boot/grub2/grub.cfg 4. add the user to the 'video' group in /etc/group video:x:39:mario 5. reboot Perform as user: 6. id uid=1000(mario) gid=1000(mario) groups=1000(mario),39(video) ensure in video group (if not yet rebooted, log out and back in)