i just had a little fun with particles and AOV renderings. i've cached out a simple particle simulation. after i've created a shader with different AOV output's, like speed, density, pressure etc....
this shader can do a nice sparkling or glitter effect. the AOV are also visible in houdini opengl for realtime feedback. the best things is the spec color are baked into attr, so its fool-proofed for stereo rendering.

now i've played in nuke to create a interesting looking effect.

heribertraab.com/2012/10/08/aov-fun-in-houdini/

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