Issue #13: Initial apporach blending bodyTexture with diffraction color using F*F for convex combination between them. Still scale is not appropriate hence fact2 comes in place. git rid of this asap.
Issue #6: Implemented loading bumpMap into shader feature such that fabricator automatically loads the bumpmap into the shader.
some corrections regarding the init bump data - there was a confusion about some parameter names. further tweaks of the gaussian taylor based fragment shader.
Issue #6: implemented bump mapping like described in the glsl wiki using a precomputed bumpmap for my textures by using the program xnormal.