Pages in Rendering
Drawing voxels seems easy at a glance, they're just cubes after all!
However, there's actually an infinite amount of ways to render voxels, depending on the way they should look like, the underlying storage, performance and resource considerations, general method used, etc. etc. ...
It all depends on what you ultimately want to do.
Signed Distance Fields
A N-dimensional field where at every point the distance to the closest surface is known.
Modern hardware accelerated rendering API.
Classic hardware accelerated rendering API.