Learn about finding available fluid dynamic data channels.
- [Instructor] The Bifrost channel data, such as…Velocity, and Churn, are very useful in a shading network.…We'll use them in this example to add a white water effect…to this river rapids shot.…Depending upon the type of object you're rendering,…you'll have different options for the Bifrost channels.…If it's a Mesh, or Mesh Cache, you'll need to go into…the Arnold section of that object's mesh shape node,…and scroll down a little bit…to enable Export Vertex Colors.…
Once that switch is on, the the Bifrost channel data…will be available to shading networks.…For a mesh object, the only channels that are stored are…Velocity, Vorticity, and optionally, Curvature and Churn.…But if you're rendering the Bifrost liquid shape node…directly, then you have more options for…channel data to access.…As we saw in a previous movie,…we can select the liquid shape node,…and in the particle display section,…choose a different color channel,…such as Churn or Curvature, and use the use the…Color Channel Remap section, and experiment with…
AuthorAaron F. Ross
- Bifröst basics
- Analyzing the node structure
- Emitting from a polygon mesh
- Colliding with a polygon mesh
- Adding velocity, friction, and drag with motion fields
- Optimizing space and time accuracy
- Caching simulations
- Meshing and exporting liquids
- Render-time meshing in Arnold
- Applying channel data to Arnold shaders
- Generating foam from a liquid
- Rendering and shading foam in Arnold
Skill Level Advanced
1. Simulating a Liquid
2. Fine-Tuning a Liquid Simulation
3. Caching and Meshing
4. Shading a Liquid
5. Simulating Foam
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