Weird Facetting Behaviour

[Kevin McAllister]

Hello all,

 

I had some weird behaviour with some geometry tonight becoming facetted. I use the same file settings and its been a long time since I've had facetting issues. I'm wondering if something changed with the most recent service pack.

 

This is where I started noticing the problem with an extruded oval. Notice how different the background shaded render is from the foreground hidden line. When I went in and edited the oval to turn it into a polyline (cut it in half and then added the surfaces back together) the issue went away.

 

 

So then I did a quick comparison in a clean file. Both started as ovals but the one on the right was converted to a polyline using the method above. The facetting is quite different. Shouldn't standard geometric shapes (ovals, circles etc.) render better, not worse?

 

 

It's all very odd to me.

 

Kevin

 

(Its not related to either 2d or 3d conversion resolution which is where I started my troubleshooting.)

 

 

 

Edited March 23 by Christiaan
Changed title from "new" to "weird"

[Pat Stanford]

Are you rendering in Shaded? If  so check the Shaded options and make sure the Detail level is set to something other than Low.

[Kevin McAllister]

16 hours ago, Pat Stanford said:

Are you rendering in Shaded? If  so check the Shaded options and make sure the Detail level is set to something other than Low.

Hi Pat.

The background render is shaded and the detail level is set to very high. It affects the polyline based extrude but not the oval based extrude.

Kevin

[Andy Broomell]

Did you just update to SP4? I have a suspicion that it might be related to T02353 – Sheet Layer Viewport Imaging Optimizations. There's some Auto-LOD happening for Shaded render now, and I think the optimization algorithm isn't working correctly for your scenario. I had similar issues while beta testing, though the bugs I submitted were fixed.

 

You should probably submit as a bug so they can examine the file.

[ColbyZ]

I had something similar happen yesterday. I had just run the newest package update from VW 2023. All the ovals I created rendered as diamond shapes in sheet renders. It didn't matter if I rendered Fast Renderworks, Shaded, or Final Renderworks. I ended up converting the ovals to nurbs and they rendered correctly. Not ideal but I was in a bind to get the project finished.

[tsw]

I'm also having the same issue with several different object types in VW2023 SP4. In the attached file, setting geometry detail to high or very high doesn't change how the model renders. The barrel top is a simple extruded circle and the hoops are sweeps—both exhibit the same behavior.

1738957525_barreltest.vwx

[Tom W.]

Set the sheet layer DPI to something higher than 72. This is the RH VP rendered at 300 DPI:

 

The Detail Level setting is something else: it relates to how much geometry you have set up your symbols/PIOs to display at different settings. That's why it isn't having any effect.

[Andy Broomell]

9 hours ago, Tom W. said:

The Detail Level setting is something else: it relates to how much geometry you have set up your symbols/PIOs to display at different settings. That's why it isn't having any effect.

 

I think you're referring to the OIP dropdown called "Detail Level," while (I assume) @tsw is referring to the Shaded render setting called "Details." The latter is indeed supposed to control the geometry LOD in regards to curved surfaces. Faceting should NOT be affected by Sheet Layer DPI, at least historically. (And in the barrel example, notice the straps are still weirdly faceted at 300 dpi).

 

Notice how the barrel looks good in the Design Layer when "Details" is set to Very High, but this can't be replicated in the Viewport with the exact same settings. 

 

I think that T02353 needs to be reexamined because these uncontrollable changes to what's being rendered are HIGHLY disconcerting to me.

@Kyle Sutton @Josh Loy

 

 

Edited March 23 by Andy Broomell

[Andy Broomell]

[Tom W.]

@Andy Broomell you're absolutely correct thank you + apologies @tsw!

[Andy Broomell]

I definitely have a wish list on file to rename Shaded "Details" to "Curved Geometry" since its the only thing this setting affects, and then it would match the corresponding setting that's already named "Curved Geometry" in Renderworks Styles.

[Tom W.]

28 minutes ago, Andy Broomell said:

 

That is bizarre + I completely missed it. I assumed that was how the rings around the barrel were modelled.

 

If you convert the 3D geometry to generic solids it renders correctly on the sheet layer:

[Jeff Prince]

I'm on 2023 SP3 and do not believe I see the problems you folks are talking about.

 

I opened @tsw 's file and observed the following settings and graphics.

 

\

 

 

 

Looks the same to me....

 

[Tom W.]

9 minutes ago, jeff prince said:

I'm on 2023 SP3 and do not believe I see the problems you folks are talking about.

 

I opened @tsw 's file and observed the following settings and graphics.

 

\

 

 

 

Looks the same to me....

 

 

This would confirm @Andy Broomell's comment about it being related to a SP4 + T02353 – Sheet Layer Viewport Imaging Optimizations...

[Jeff Prince]

15 minutes ago, Tom W. said:

 

This would confirm @Andy Broomell's comment about it being related to a SP4 + T02353 – Sheet Layer Viewport Imaging Optimizations...

 

That's why I stay behind those of you on the bleeding edge...

to help confirm your suspicions of what's broken 🙂

[Tom W.]

14 minutes ago, jeff prince said:

 

That's why I stay behind those of you on the bleeding edge...

to help confirm your suspicions of what's broken 🙂

 

That's very selfless of you 🙂

[Hernan]

We have disabled the adaptive detail adjustment for VW 2023 SP5. It will be investigated further for VW 2024. Sorry for the inconvenience.

[ColbyZ]

On 3/24/2023 at 10:50 AM, Hernan said:

We have disabled the adaptive detail adjustment for VW 2023 SP5. It will be investigated further for VW 2024. Sorry for the inconvenience.

Is there any date when this will be available?

[rDesign]

1 hour ago, ColbyZ said:

Is there any date when this will be available?

If you have an immediate need to fix this behavior sooner than SP5 (which will be awhile since SP4 was released very recently) you could roll back your Vw installation to SP3.

[E|FA]

 

[ColbyZ]

On 3/30/2023 at 12:58 PM, E|FA said:

 

Thank you I had no idea you could do this.