I have a mesh going into a Wireframe sop (see attached .hip). Since upgrading from H12.5 to H13, it is no longer rendering as expected. Do you happen to have a clue why?

It almost looks like the tubes are inside out. The Wireframe's “Wire Radius” is set to 0.0002. When I increase it by a factor of 10, the expected results start to creep back in. Anything greater than 0.02 looks as you would expect. It's not really feasible to scale my entire scene up for this issue.

Swapping the Wireframe sop for the PolyWire sop fixes it, but by default, generates much too heavy of a result.

Any ideas? Thanks in advance.

-Greg

Hi Greg,

These actually look identical in H12.5 and H13 here (see screenshot). I'm guessing you've tried the latest production build?

Thanks Adam. Were you able to try a mantra render? That's where I'm seeing the difference (attached).

Btw, I'm using H12.5.562 and H13.0.447 on Mac OS X 10.9.3.

Thanks for any clues.

Works fine when rendering with Micropoly. When rendering with PBR/Raytrace I'm getting the same as you. Note that if you have “preview” checked in Render View, it will raytrace regardless of your Mantra ROP setting.

edit: And if you pop down a Convert SOP afterwards to actually make it into polygons, it works fine in PBR as well.

That fixes it. Thank you, Skybar.

So am I understanding right that the “Preview” checkbox in the H13 Render View invokes ray tracing while in H12.5 it does micro polygon (or obeys the ROP)?

Thanks again.

Ah, I did try a mantra render but turned off Preview (habit) so it didn't screw up.

I never realised they gave different results under Micropoly & Raytrace… nice lesson learned.

Edit:
Ok so I went back to H12.5 and sure enough it's running Raytrace in Preview - and the results are indeed different. Raytrace in H12.5 renders them the same as Micropoly.

Bug it?