Messages

946

[Max] I need help! / Re: Fireflies case

« on: 2016-02-27, 15:01:43 »

Got it.
Thanks

947

[Max] I need help! / Re: Fireflies case

« on: 2016-02-25, 14:33:42 »

The image attached shows a basic scene, all defaults, except for glossiness at 0,99.
The light source is a corona sun with corona sky.

It seems that, with the defaults, the samples taken from reflections far away assign a white color to the pixel. Obviously the pixel is much bigger than the actual reflection and it shows as a "filefly".
Isn't there like a clamping for distance? Would rendering with more samples make this better? Other workflows?

Thanks.

948

[Max] I need help! / Re: Fireflies case

« on: 2016-02-25, 14:11:25 »

There should be no render time impact at all.

Are you sure about this? So, even when there's no scattering of rays on reflection the amount of rays is the same as if there was scattering?

949

[Max] I need help! / Re: Fireflies case

« on: 2016-02-24, 16:22:02 »

1) set reflection glossiness of the window frame to 0,99 - this virtually won't change the appearance of the material, and the fireflies should not appear

Indeed. they aren't appearing. Is there any way to make this the default instead of a value of 1?
Is there any impact in render time?

2) use rayswitch material for the glass sink

I just can't imagine doing this in production. Especially because I wouldn't know what object I need to put in a rayswitch material in the first place. It took me hours to find that it was the sink.

Also, you are using Vray HDRI map in this scene. It usually works, but may sometimes cause troubles.

I tried with a CoronaBitmap. I got even more fireflies.

Do you know what the exact problem is and whether there's a quick solution for the overall scene, for when time is pressing during a deadline? (the question may sound harsh, but I'm really kindly asking)

950

[Max] I need help! / Re: Fireflies case

« on: 2016-02-24, 15:20:07 »

I reduced the scene to only 4 objects.
I still get a white pixel at pass 140 or so.
Of course 1 pixel wouldn't be a problem, but with the full scene, there are a whole bunch of those fireflies.

I even removed the reflection of the glass object. It's just pure refraction now.

Find the scene here

http://www.mediafire.com/download/kdo3wtb29xa5e5a/CoronaFireflies.zip

Just click render to render the region with the spot.
The attached is the region render.

Thank you.

951

[Max] I need help! / Re: Fireflies case

« on: 2016-02-23, 17:45:33 »

Hi Maru, thanks.

The rendered region is marked up in red on the top right. I photoshoped an arrow and the rectangle. see it?

If the noise is caused by an object reflecting in glass, you can place the glass material in all slots of the rayswitch except for the reflections slot

Doing the rayswitch thing seems to be a time consuming workaround for a fairly common situation, no?
In production it wouldn't make sense to go around searching for a problematic object in my opinion. Is this a bug?

952

[Max] I need help! / Fireflies case

« on: 2016-02-23, 15:40:38 »

Hi there.

I found that the 2 sinks made of glass were causing fireflies on several areas in the render.

Do you know why? I kind-of need those sinks made of glass...

Please see below the "before" with the glass sinks and the "after" without the sinks.

Thanks!

953

[Max] I need help! / Re: resize the interactive VFB window- Even smaller

« on: 2016-02-12, 16:40:45 »

Got it. Thanks.

954

[Max] I need help! / resize the interactive VFB window- Even smaller

« on: 2016-02-12, 16:02:05 »

On the documentation it says "To resize it, simply resize the VFB window", refering to the interactive frame buffer.

I can shrink it up to a certain point, but it won't let me go under about 450px.
Is this correct?

955

[Max] I need help! / Re: Save progress and restart rendering after Max crashed.

« on: 2016-02-11, 14:27:32 »

Fantastic. Thanks.
Is there any reason why this feature shouldn't be ON by default other than the resouces it takes to save the image?

956

[Max] I need help! / Save progress and restart rendering after Max crashed.

« on: 2016-02-11, 13:33:41 »

Hi there,

I'm new to Corona.
Las night I was rendering a scene and this morning there was no sign that 3ds max was ever open.

Is there a way to save or auto-save the rendering in progress, so if Max crashes you can open that file and continue rendering from where it left of?

If this was discussed before, a hint on what thread to read would be apreciated.

Thanks,
Guido.