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Fluid Caustic Volume Shader Setup for Maya 2014
Fluid Caustic Volume Shader Setup for Maya 2014
david allen, updated 2015-02-05 07:41:23 UTC 58,744 views  Rating:
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Page 7 of 8

10. Camera settings

In order for the camera to start capturing and rendering the volume caustics photons, it needs to have a reference to the volume shader we first set up in Section 4.

  1. Select the “shotCam_persp1” viewport and click on the “Camera Attributes” button in the viewport mini-shelf


  2. Scroll down to the “Mental Ray” section and type “photonBoundary_parti_volume1” into the “Volume Shader” channel

Test render 7

WHOA. Such wow. Volume caustics.


11. Final render

Now that all the necessary node connections are in place, try different settings for the attributes of “waterSurface_parti_volume_photon1” to tone down the volume caustic effect and define some of the rays better. Here are the ones I used:

  1. Select “photonBoundary_parti_volume1” and set “Extinction = 0.050” to have photon particles fall off faster (makes them appear less bright the further they get from the water surface faster). I left “Scatter = 0.150“, but feel free to mess around with this setting to change the overall brightness of the caustics effect.

  2. Select “waterSurface_blinn1”s “Color” and set “Transparency” to “HSV(200.000, 0.500, 1.000)” for a more subdued blue tint.

  3. Select “photonEmitter_areaLight1” and crank up “Intensity = 500”, “Exponent = 2”, “Caustic Photons = 1,000,000” 

Final render