. Pretty much done with the fitting
 => Added the presets for most materials (14 in total)
 => Fitting is quite convincing
. Final model has 9 parameters...
. I'll add a few more options in the 3D/2D viewer to display reference BRDF in alpha over fitted BRDF and that should be it for the app!
 => Soon time to start the application of this marvelous Pom model ! ^^