Faster shadering

Muchly faster shader rendering than my last attempt (because it lets you use a lower resolution and uses costumes rather than pen) which also happens to not use JSF.
Obviously you will have to write your own shaders or manually port them from GLSL, because I'm not about to write an interpreter.
There are most likely a lot of maths functions missing and I probably forgot to provide some very important parameters so please shout at me on the forums and I will add them