Playing with Various Functions

Played around with various distance functions from
http://www.iquilezles.org/www/articles/distfunctions/distfunctions.htm

The screenshot below uses the udRoundBox primitive and the repetition operator. The frame rate is pretty high, possibly due to the newly revised ray marching loop. This also shows that increasing the number of shapes does not affect performance at all since this is an implicitly described scene. Later on, when the distance functions become more complex the performance might take a hit.