Right, my objection to the textured cubes is that they are not the volume equivalent of a pixel. Pixels are point samples without shape or texture. These cubes have both.<p>What I call a voxel is much smaller (on the order of a screen pixel), and drawn as a point sprite or screen-facing quad with a single color. Texturing is achieved by having many voxels with different colors&#x2F;materials.<p>Here are some videos of what we used to call voxels:<p>DOS game: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=51E_G7NCXVM" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=51E_G7NCXVM</a><p>Gameboy game: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=3zVy-4CEFQU" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=3zVy-4CEFQU</a><p>Medical imaging: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=GrLqFNhVL68" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=GrLqFNhVL68</a><p>Note that they were not using voxels because they had a certain artistic style to them. They used voxels because with the hardware they had, this was the most realistic rendering they could achieve. Once GPUs came out with hardware-accelerated triangle rasterization, voxel engines died.<p>For more information about point-sampling, see this classic paper, &quot;A Pixel Is Not A Little Square&quot;:<p><a href="http:&#x2F;&#x2F;alvyray.com&#x2F;Memos&#x2F;CG&#x2F;Microsoft&#x2F;6_pixel.pdf" rel="nofollow">http:&#x2F;&#x2F;alvyray.com&#x2F;Memos&#x2F;CG&#x2F;Microsoft&#x2F;6_pixel.pdf</a><p>And for a more in-depth discussion of sampling, albeit in one dimension, watch Chris Montgomery&#x27;s video &quot;Digital Show and Tell&quot;:<p><a href="http:&#x2F;&#x2F;xiph.org&#x2F;video&#x2F;vid2.shtml" rel="nofollow">http:&#x2F;&#x2F;xiph.org&#x2F;video&#x2F;vid2.shtml</a>