Order independent transparency
Appearance
Methods for order independent transparency
Weighted Blended Order Independent Transparency
See http://casual-effects.blogspot.com/2014/03/weighted-blended-order-independent.html
Dual Depth Peeling
https://developer.download.nvidia.com/SDK/10/opengl/src/dual_depth_peeling/doc/DualDepthPeeling.pdf
Stochastic Transparency
https://research.nvidia.com/publication/2011-08_stochastic-transparency