As far as i know my contest entry "only" needs ps 2_a . However it still uses r32f textures for the shadows, so that might be the cause for it not working correctly on your pc.
There currently is no demo showcasing the low end shadows. I will add options to my game for switching to low end shadows however. So you will get your demo, along with a tiny multiplayer shooter And as i have a fixed deadline, this won't take too long
And as i have a fixed deadline, this won't take too long 
