I followed Inigo Quilez's article on terrain marching: http://iquilezles.org/www/articles/terrainmarching/terrainmarching.htm http://iquilezles.org/www/article

I followed Inigo Quilez's article on terrain marching: http://iquilezles.org/www/articles/terrainmarching/terrainmarching.htm http://iquilezles.org/www/articles/terrainmarching/terrainma... Be sure to browse his other articles: http://iquilezles.org/www/index.htm http://iquilezles.org/www/index.htm and his awesome video tutorials (which tend to be more about the math than the code): https://www.youtube.com/user/mari1234mari https://www.youtube.com/user/mari1234mari Enjoy!