Blender has 2 different Rendering options. On the one hand we have the new physically based Renderer (Cycles), and on the other hand we have blenders Internal Renderer.
Depending on which Renderer you use, BPainter offers a different Set of functionality. Here is an overview of what functions can be used with each Renderer.
BPainter offers a different set of features for Blenders Internal and Cycles Renderer. Here is a feature comparison of both render modes.
|Universal Brush Library|
|Universal Color Palette Library|
|Brush Textures Support|
|Stencil Textire Support|