Author Topic: Corona V5 stalls and crashes when rendering screen region  (Read 2575 times)

2019-12-13, 13:18:46

jamieirvin

  • Active Users
  • **
  • Posts: 70
    • View Profile
    • Infinite3D
Hi guys,

We have noticed that, when rendering a small region in the viewport, corona has a tendency to stall when computing the secondary GI.  It hangs indefinitely and any attempt to stop it causes C4D to freeze (spinning wheel of doom).  This means we have to force quit so no crash report....

This has only happened with the latest commercial V5 release / C4D R21 / MacOS on multiple machines.

Thanks
Core 3 HF2 - C4D R19 - OSX 10.13.2 - 64GB RAM

2019-12-13, 13:23:36
Reply #1

houska

  • Former Corona Team Member
  • Active Users
  • **
  • Posts: 1512
  • Cestmir Houska
    • View Profile
Hi, could you please provide exact steps to reproduce this, so that we can check it on our machines? Does it happen with a specific scene or can it be just a new scene from scratch? We'll be making a hotfix soon, probably, so this fix might be included if we manage to figure it out.

Thanks!

2019-12-13, 15:17:18
Reply #2

TomG

  • Administrator
  • Active Users
  • *****
  • Posts: 5434
    • View Profile
Ps on the "freeze so no crash report", you can actually still generate one, see https://help.c4d.corona-renderer.com/support/solutions/articles/12000033461-how-to-report-issues-c4d "How to generate minidump files"
Tom Grimes | chaos-corona.com
Product Manager | contact us

2019-12-13, 16:13:31
Reply #3

jamieirvin

  • Active Users
  • **
  • Posts: 70
    • View Profile
    • Infinite3D
Hi,

It's not scene specific, we have had it happen on a number of projects.  However, it does tend to be the 'heavier' ones so is unlikely on a relatively simple scenario.  It is also seems to be limited to small render regions the viewport, say, 5% of the image.  A larger region doesn't seem to attract the same crash.

This doesn't happen in the VFB using Corona's region render.  It only happens in the viewport when doing a quick test using Cinema's render region marquee.

When it freezes, it has only been when computing the secondary GI.   The timer will still run but the region will never render.  When we then click anywhere in the viewport or try 'esc' we get the spinning wheel and then have to force quit.

Next time it happens we will do our best to get a crash report.
Core 3 HF2 - C4D R19 - OSX 10.13.2 - 64GB RAM

2019-12-13, 16:15:16
Reply #4

TomG

  • Administrator
  • Active Users
  • *****
  • Posts: 5434
    • View Profile
Thank you for the extra information, and for trying to capture a minidump if it comes up again, much appreciated!
Tom Grimes | chaos-corona.com
Product Manager | contact us

2019-12-13, 16:32:25
Reply #5

jamieirvin

  • Active Users
  • **
  • Posts: 70
    • View Profile
    • Infinite3D
Right, it's just happened again and I am yet to interrupt it (see attached).

I am attempting to create a minidump file:

"How to generate minidump files?
Download and run this tiny application to obtain the minidump file:

Process Explorer

When the error message appears, or during the freeze, run the Process Explorer, find "CINEMA 4D.exe" process, select it, and go to Process > Create Dump > Create Minidump... then save the file in a desired location and upload it to us."


However, the above only applies to PC users and we use MacOS....

Any ideas?
Core 3 HF2 - C4D R19 - OSX 10.13.2 - 64GB RAM