Constant shading per object

The goal is to grant the control over specific objects ligth shading in the pipeline. It is equivalent to disabling the Light Kit but can be done per object, not only for the whole view. A checkbox has been added in the Lighting section of the property panel for the representations that supports it. There are currently some bugs that originate from specific shaders implementation (Surface LIC for instance), but those are also present when using the Light Kit so they won't be addressed here, a dedicated issue will be opened.

Constant shading is disabled by default, it is mostly used to higlight specific part of the pipeline and not be bothered by the lighting of the scene.

Sphere source clip pipeline with classic shading :

Sphere source clip pipeline with constant shading :