sdftracer Simple raytracing demo based on signed distance field. Requires: glm stb_image References: http://iquilezles.org/www/articles/distfunctions/distfunctions.htm http://jamie-wong.com/2016/07/15/ray-marching-signed-distance-functions/ http://www.iquilezles.org/www/articles/rmshadows/rmshadows.htm