overviewer/Minecraft-Overviewer — comment on commit 8b55203d41b73922ffdaaf97d2ff787c627c2b57
File: overviewer_core/src/rendermode-normal.c line 152
By eminence:

It looks like this loop is executed for every x,y,z combination. Is there anyway to only run it for each x,y instead? This loop may be quick, but it is in the most inner of the inner loops, so it would be good to avoid redundant calculations if possible.