veyepar: If I were a pixel, what would I do?

Author(s):	Harley Mellifont
Location	Guthrie Theatre CB06.03.28
Date	jan Tue 23	Days Raw Files
Start	11:35	First Raw Start	11:19
Duration	0:25:0	Offset	0:15:11
End	12:00	Last Raw End	12:19
Chapters	00:00 0:13:20
Total cuts_time	22 min.

http://lca2018.linux.org.au/schedule/presentation/148/
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Description:	In this talk, Harley explains the basics of raymarching -- a powerful technique that can be used to draw 3D scenes with a pixel shader. By using signed distance functions, we can describe the geometry of a scene in a succinct mathematical form. Raymarching allows us to step rays closer and closer to our geometry until we intersect and then colour our pixels according to our shading model. This technique is vastly expressive. Scenery from cityscapes to natural landscapes can be produced by aggregating simple mathematical rules. With surprisingly few mathematical operations, you can create remarkable variety, and by supplying temporal inputs like music and motion, you can create procedurally evolving scenery. markdown
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