Revert the new "physical model" shadow rendering code (#8636)
Revert the new "physical model" shadow rendering code (#8636)


turnidge/flutter,tvolkert/flutter,tvolkert/flutter,Hixie/flutter,tvolkert/flutter,Hixie/flutter,tvolkert/flutter,Hixie/flutter,cbracken/flutter,tvolkert/flutter,cbracken/flutter,tvolkert/flutter,flutter/flutter,turnidge/flutter,flutter/flutter,cbracken/flutter,turnidge/flutter,Hixie/flutter,cbracken/flutter,tvolkert/flutter,flutter/flutter,tvolkert/flutter,cbracken/flutter,flutter/flutter,Hixie/flutter,Hixie/flutter,cbracken/flutter,Hixie/flutter,Hixie/flutter,cbracken/flutter,flutter/flutter,flutter/flutter,cbracken/flutter,flutter/flutter,cbracken/flutter,flutter/flutter,turnidge/flutter,flutter/flutter,turnidge/flutter,tvolkert/flutter,tvolkert/flutter,Hixie/flutter,cbracken/flutter,Hixie/flutter,flutter/flutter