Houdini and Karma/Solaris Tips

Tips and Troubleshooting:

Are you really using XPU? See Karma and XPU

Common issues

• You animated your geometry and now extrenous geometry is showing up in your renderfarm and husk render?


• Can't promote parameter in a light filter in H22 but works in H21? Use the workaround:
  • go to the light filter library node (don't dive inside) and bring up the parameter dialog with Edit paramter interface.
  • Click on "From Nodes"
  • Expand kma_filter_gobo1 (for example, or whichever node you are using)
  • Right click Texture(map) and select Install Parameters


• Attenuation not on the light? Need a gobo? See light filtering node
  


• Complex scene crashing in solaris? Make sure you are bringing in your geometry with point instancing

• pointInstancerImportance.hipnc


• Culling geometry in Solaris
  


• Mesh coming in all as one object? see Karma Overview - middle of the page
  


• Noise - how do you scale it? see Karma Textures


• Weird looking normals on boxes? Make sure you check Vertex Normals On (or use edge cusp, normal nodes to recompute normals - likely just a Vulkan preview issue)
  


• Scene super heavy? Make sure you are using packed geo and when importing use the point instancer option on your import node (see instancing)
  
• TIP modeling polybevel tip - similar to mantra and redshift where you can round edges in the shader under the bump, you can do the same in karma using a round edges plugged into the normal in the shader

  

  
  

• TIP Packing making your ramp disappear from your principled shader? Transfer the shopmaterial, not the uv properties in your pack node
  rampColorH18InKarma20.5.hipnc