Toon shading model

[anonymous_user_8e00a225]

@Arnage;378155

It’s submitted, please try it out and post pretty pictures and/or feedback. You can find the Pull Request here:

https://github.com/EpicGames/UnrealEngine/pull/1552
Make sure you are logged into github with the account linked to your unreal engine account or you will get a 404 error!

Note: to allow for various half toony styles, materials with shading model will default to having regular indirect lighting and reflections. To create a completely flat material, make the material AO black and add your flat shadow color to the emissive channel.

Note number two: For some reason material AO does not block screen space reflections. As a result you might get inappropriate reflections when using the previous technique. Simply raise the base roughness to get rid of them or turn off SSR altogether if you don’t need it anyway. I did not change behaviour as all shading models handle SSR way. If anyone from Epic reads : I’d like to know why you chose over blocking SSR with material AO, which seems more logical to me.

-I AM logged onto the Github account and I still get an error. Is outdated? BTW your toon shader is the coolest thing I´ve ever seen!! Seriously!