- Stencil Routed A-buffer [1]

- Multi-Fragment Effects on the GPU using the k-Buffer [2]

- Production Volume Rendering [3]

- Translucent Shadow Maps [4]

[1] https://developer.download.nvidia.com/presentations/2007/sig...

[2] https://www.sci.utah.edu/~stevec/papers/kbuffer.pdf

[3] https://graphics.pixar.com/library/ProductionVolumeRendering...

[4] https://www.scribd.com/document/657069029/Translucent-Shadow...