Not a technical questions.

I open the material pallete and for every material I added, I got this image :



Just my curiosity, why the developer use this image ? This 'castle' image looks silly ... seriously :-D
Why not just using more 'appropriate' symbol ?

Principled Shader specs were created by Disney and in the beginning it was just called Disney Shader, so I assume the castle you see is reference to Disney castle
the shader was later renamed to Principled Shader in Houdini, I assume to avoid potential TM issues
(Renderman for example still calls it pxrDisneyBSDF probably because they are owned by Disney)

tamte
Principled Shader specs were created by Disney and in the beginning it was just called Disney Shader, so I assume the castle you see is reference to Disney castle
the shader was later renamed to Principled Shader in Houdini, I assume to avoid potential TM issues
(Renderman for example still calls it pxrDisneyBSDF probably because they are owned by Disney)

Thanks a lot for the information. That explains the 'castle' thing but are they allowed to change it ? I prefer to see something more related (and cooler). It looks some kind 'old-fashioned'.