1 : INTERFACE
SketchUp has evolved in many aspects of its object creation, but in terms of a default render engine it has not. The program does have shadow capabilities and does have a default sunlight setting that is used to evoke shadows in the scene. Normally in render programs you will process the image; this default in SketchUp is not possible. What you see is what you get as a final image. You can of course increase the image resolution to be of higher quality.
This may well be missing the point of the SketchUp program as it is essentially a sketching program, associated with measured hand-drawn activity rather than aspiring ...