[Solved] Karma render primitives with transparent material problem

[RGB127]

-----------The origin problem----------
The problem happens only in usd&karma.
When I use transparent texture in small object, the transparent part of front primitive(near to camera) will cut out the object.
This happens only when the scene or object is very small (like the sphere and grid in following images, scale from default size to 0.01).
Is this something to do with Z depth accuracy? Scaling the scene to bigger size can solve the problem, but the light and dynamic differ when scaling. It will be very nice if this can be solved without scaling the scene.

-----------Solved method---------------
Put a karma lop node anywhere and activate its display flag, set Rendering->Shading->Ray Bias to a small enough value. Then the karma render result is correct in viewport even if you delete the karma node.
Hope this parameter can be edit in Display Options too.

[RGB127]

The screenshots :
https://imgur.com/2t4E17t
https://imgur.com/QwbCkG7

[Ben (SideFX)]

Thanks for the post. Would you mind submitting this as a bug / RFE to SideFX Support here please: https://www.sidefx.com/bugs/submit/

[RGB127]

Originally posted by Ben (SideFX):

Thanks for the post. Would you mind submitting this as a bug / RFE to SideFX Support here please: https://www.sidefx.com/bugs/submit/

I've submitted it as a very low priority bug report. (Since it's only about the viewport and does not influence render)