Hi, Blender GSoC student YimingWu here, I'm very glad that I got this opportunity to implement the NPR line rendering feature into blender. Here I present some of the progress. Currently the solution is focused on realtime, later on I will migrate the offline rendering code for accurate line extraction. the progress seems fluent so far, and the feedback looks promising too.
Some artefacts can be seen but there's still a lot to improve. blender's infrastructure turns out to be fairly easy to use when coding.
Suggestions are always welcomed!