Why not a single quad and a fragment (=pixel) shader? A bit of ray marching, something like this [0]. [0]: http://www.iquilezles.org/www/articles/terrainmarchi

Why not a single quad and a fragment (=pixel) shader? A bit of ray marching, something like this [0]. [0]: http://www.iquilezles.org/www/articles/terrainmarching/terrainmarching.htm http://www.iquilezles.org/www/articles/terrainmarching/terra...