well then, the shader is sufficient for what i want to do with it in PreVa, so i'm ok with it, i may also contribute it (because i've changed it slightly)

edit: this works for both dynamic and static lights btw, i tested it on static and found out it worked with dynamic as well, which makes it better than the engine's default in my opinion. we may be posting a video of this with our models, the shader can be changed a bit to make good toon lighting as well