Hanlin Wang

hzwus

About Me

technical artist / pipeline developer
専門知識
Developer
業界:
Film/TV  | Gamedev

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LOCATION
Los Angeles, United States
ウェブサイト

Houdini Engine

Availability

Not Specified

Recent Forum Posts

Karma Depth AOV doesn't work without also rendering beauty. 2025年3月7日14:22

I'm trying to render just a depth AOV using Karma (Karma Render Properties LOP > Image Output > Ray Level Output > Depth (Camera Space)). However for certain scenes, the render comes out clipped to pure white, almost like an alpha mask. Sometimes I get the following warning:


Variance oracle can't find color plane C. Use 'plane' option to select from [depth]
Variance oracle can't find color plane C. Use 'plane' option to select from [depth, Pz]

I discovered that if I keep the Beauty AOV checked, thus rendering both a beauty and depth pass, the depth looks as expected.
Any idea why this is happening?

Karma - possible to render albedo AOV with transparency? 2025年2月27日3:33

I'm trying to render my scene to a PNG image with only albedo applied, no other shading or lighting. I also want the background to be transparent (hence PNG). Similar to what the Marmoset Viewer [marmoset.co] achieves.

I discovered that the AOVs tab of the Karma Render Properties [www.sidefx.com] LOP allows you to specify beauty, albedo, etc. However, selecting the albedo AOV produces an RGB render with a black background. Only beauty produces RGBA renders with a transparent background.

Is an RGBA albedo pass possible without having to do any compositing? Previously I was resorting to a hack of turning off all shading except emission, and plugging the albedo textures into emission color. I feel like AOV is the "real" solution, correct me if I'm approaching this wrong? Thank you!

Transforming matrix with python API ignores translation 2025年2月6日17:56

Got it, thank you!!