The guys from Oslandia are really ripping things up in the PostGIS 3D world. (They are nice guys too– Olivier and Hugo had a skeletonization approach punched up and ready to test before I left the Boston Code Sprint this past Spring.)
So I missed these two videos in my first few views of the SFCGAL website:
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Just one question– what is “Horoa plugin 3D renderer”? Google couldn’t answer this question for me… .
EDITED December 6 from Olivier in the comments:
“It’s just the name of the QGIS plugin dedicated to 3D rendering”
Smathermather's Weblog 
And as you asked about Horao: http://oslandia.github.io/horao/
It’s just the name of the QGIS plugin dedicated to 3D rendering
Cheers,
Ah, should have checked github. Awesome. I will check it out.