Created attachment 90751 [details]
weird lighting/shadow - unigine-sanctuary

i've tested same apps if something works with htile, it does very fast 

serious sam 3 - gpu crashes
unigine-sanctuary - works but massive artifacts
unigine-tropics - works 
unigine-heaven3 - works  
unigine-heaven4 - works but some artifacts (like sanctuary but less).
metro 2033(wine) - works
metro ll - works (but still looks like a crap) 
left 4 dead 2 - works 
team fortress 2 - works  
gnome-shell - works but some artifacts 

all artifacts disappear with "nohyperz" 
btw thanks for tip.