Inventor Studio Rendering objects not perfect round

[m_boes]

Hi everyone,

I'm busy making product renderings in Inventor Studio in a high resolution (typically 4096x1600 pixels). But I've noticed that occasionally some objects or parts that should be round come out as a polygon in the rendered image, and not perfectly round.

This also happens outside Studio while looking at the model. If I zoom in on a circle I can see the polygon shape for a short period of time before it turns into a perfect circle. It seems Inventor only loads the perfect round shapes when zoomed in sufficiently. That's okay but I would expect Inventor to use the best quality round shapes on all objects in the renderings but that's not always the case.

I've tried zooming in on all round shapes before starting the rendering but that doesn't always seem to work.

Does anyone have a solution for this?

I've attached some example screenshots to show what I mean.

This is my setup:

Intel Xeon E5-1650 v3 @3.50Ghz

Nvidia Quadro K4200

32GB RAM

Autodesk Inventor 2019

Settings:

On Display tab:

Display quality: Smoother

Disable Automatic Refinement: unticked

On Hardware tab:

Graphics setting: Quality

[Lewis.Young]

Hi,

Have you looked at the below settings?

[m_boes]

Yes, I have the exact same settings.

[Lewis.Young]

Have you also updated your graphics card drivers? I've experienced this before and that seemed to fix it.

If not then @johnsonshiue may know more about the problem at hand

Lewis

[m_boes]

I update my drivers regularly, but I'll try the latest driver to see if that works.

I've also had this problem once or twice in the past with an older version of Inventor and a colleague of mine also has it sometimes.

It's tricky because when I render in lower resolutions you can't see if circles are polygons so it doesn't matter. And sometimes it's also fine in high resolution, so it's difficult to recreate the problem.

I usually start the rendering when I leave at work only to find out the next day that the circles are not really round.

[johnsonshiue]

Hi Menno,

Aside from what Lewis already mentioned, you may want to do a quick Rebuild All (Manage -> Rebuild All) to refresh the geometry and graphics. Does it look nicer now?

Many thanks!