RayTK Tutorial: Volumetric Sampling

This tutorial covers using RayTK scenes to sample voxels in space for geometry instancing.
This technique can also be used for things like LED pixel mapping.

Download the toolkit:
https://github.com/t3kt/raytk/releases

Completed project file:
https://github.com/t3kt/raytk/raw/master/examples/tutorial-pointMap-v2-final.toe

Raymarching theory:
https://adrianb.io/2016/10/01/raymarching.html

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