Crashing motion blur

[Feodor]

Hi
I found a problem!
Create any object, apply any modifier that bends the geometry, animate the curvature, just animate the scale, apply CoronaLightMtl, turn on the motion blur, click render and watch as crashing 3ds max. This only happens with the CoronaLightMtl material.

[rowmanns]

Hi,

Which versions of Corona and 3ds Max?

Rowan

[GeorgeK]

Hi
I found a problem!
Create any object, apply any modifier that bends the geometry, animate the curvature, just animate the scale, apply CoronaLightMtl, turn on the motion blur, click render and watch as crashing 3ds max. This only happens with the CoronaLightMtl material.

Can you please provide us with a minidump or a repro scene, we are unable to reproduce this.

Thanks.

[Feodor]

Hi,

Which versions of Corona and 3ds Max?

Rowan

I sent you a scene. Max 2021 last corona daily bild
This happens when you check the Emit Light box in the CoronaLightMtl parameters.

[GeorgeK]

Hi,

Which versions of Corona and 3ds Max?

Rowan

I sent you a scene. Max 2021 last corona daily bild
This happens when you check the Emit Light box in the CoronaLightMtl parameters.

Still nothing I am afraid, it renders normally. Can you please try with a different HDRI or with no HDRI at all and see if the issue persists?

Can you please send us a minidump?

[Feodor]

It seems like a Mystery, I observed the error for two days, repeated it in different scenes, in different ways, I reset the computer, today I opened the scene 3ds max not crash. The only thing that is present, now when the Emit Light is enabled, the object turns black.
I need this effect for the future scene flashing the headlights of the turn signal at the car for the camera with a long shutter speed, motion blur does not take into account the animation of the material, so we have to animate the geometry of the object

[GeorgeK]

It seems like a Mystery, I observed the error for two days, repeated it in different scenes, in different ways, I reset the computer, today I opened the scene 3ds max not crash. The only thing that is present, now when the Emit Light is enabled, the object turns black.
I need this effect for the future scene flashing the headlights of the turn signal at the car for the camera with a long shutter speed, motion blur does not take into account the animation of the material, so we have to animate the geometry of the object

Nice catch, this looks like a bug due to a combination of things, plus some sort of corruption in your scene (could explain the crashing). I was able to recreate it though in a new scene (albeit in a somewhat different manner). Reporting it for further assessment.

In my case, by lowering the MBlur amount to somewhere along 5, you should be able to see them rendered even with emit light on. (the animated 0size radius needs to be per single frame for this to work. Also, I don't know if it would make sense to animate object visibility instead of size.)

Making each sphere a unique editable poly, will allow you to see the spheres with emit light on (regardless of mblur amount), for some reason it won't accept instanced under the aforementioned circumstances.

Attaching my version as well, looks like a nice entry for NFT.

(Report ID=CRMAX-347)

[Feodor]

Nice catch, this looks like a bug due to a combination of things, plus some sort of corruption in your scene (could explain the crashing). I was able to recreate it though in a new scene (albeit in a somewhat different manner). Reporting it for further assessment.

In my case, by lowering the MBlur amount to somewhere along 5, you should be able to see them rendered even with emit light on. (the animated 0size radius needs to be per single frame for this to work. Also, I don't know if it would make sense to animate object visibility instead of size.)

Making each sphere a unique editable poly, will allow you to see the spheres with emit light on (regardless of mblur amount), for some reason it won't accept instanced under the aforementioned circumstances.

Attaching my version as well, looks like a nice entry for NFT.

(Report ID=CRMAX-347)

Thanks for the advice, (animate object visibility), I didn't even think about it. Reducing the Mblur to 5 in this scene didn't solve anything. Thank you for paying attention to this!