Editing Painter's algorithm (section)

== Reducing visual errors ==
There are a few ways to reduce the visual errors that can happen with sorting:

=== Binary Space Partitioning ===
BSP is a method that involves making a BSP tree, and splitting triangles where they intersect. It can be extremely hard to implement, but it fixes most visual errors.

=== Backface culling ===
Backface culling involves calculations to see if a triangles points will appear clockwise or counter-clockwise once projected to the screen, and doesn't draw triangles that shouldn't be visible anyway. It reduces some visual errors, as well as reducing the total triangles drawn.