Messages

1

[Max] I need help! / Re: Ray/s accidentally goes low

« on: 2016-11-21, 14:10:01 »

Could you run Corona benchmark? https://corona-renderer.com/benchmark/ Maybe something wrong with your hardware?

Benchmark scene works perfect.
And I got this issue again with my scene :((

I have updated corona to 1.4 but it happens again. Rays/s is 3000-4000 for last 20 mins and just nothing happens...
In Resources Monitor there are a lot of hard faults for 3ds max:


And also there are still about 4GB RAM free, so I am not running out of the memory.

Restart 3dsmax helped but not for a long time. After couple interactive renders it is not working again

2

[Max] I need help! / Re: Ray/s accidentally goes low

« on: 2016-10-27, 17:12:44 »

http://screencast.com/t/kjbIlJ0Ti6C

Check this out. No object at all, ray/s is 200k....what's wrong there???
On empty scene passes are usually increasing faster than seconds in rendering time

3

[Max] I need help! / Re: Ray/s accidentally goes low

« on: 2016-10-27, 16:47:01 »

what is your CPU usage? Any photometric lights in the scene?

CPU usage is 90 +/- 5
No photometrics, just default Corona environment light,  walls and 3 portlals in windows...
All other objects are hidden

4

[Max] I need help! / Ray/s accidentally goes low

« on: 2016-10-27, 16:19:54 »

Hello everyone.

I was working on the scene and everything was perfect.
But suddenly interactive render became very slow.

I have spent 5 hours trying to resolve that issue...
Finally, I left walls and portals and added mtl override (portals are excluded).

Here is screenshot: http://screencast.com/t/Pa0PN2qOax

Super simple scene but rays/s is under 300k. :(
If I add same objects into a new scene Rays/s is 1.5 million! But if I add entire the scene with all objects then it is slow again....

I tried to remove geometry that I have added after last fast render, but no luck....

Any ideas how to troubleshoot issue like that?

Thanks

5

[Max] I need help! / Re: Low lighting areas noise

« on: 2016-05-13, 16:57:14 »

In my opinion, you need som CC... It's too dark, no contrast, no colors etc...

this is raw render without postprocessing

6

[Max] I need help! / Re: Low lighting areas noise

« on: 2016-05-13, 13:12:44 »

Hi guys

I have found an answer for my original question. I took my photo cam, switch it to manual mode and played a little bit.
Finally, found out that the issue was that there was no enough illumination from HDRI outside. And instead of increasing HDRI light power I tuned ISO to 2400 that is obviously too high for the daylight room like that. Same noise you usually see when you try to make a photo in the dark and increasing cam ISO to get something visible on the photo.

Here is new render.

7

[Max] I need help! / Re: Low lighting areas noise

« on: 2016-05-12, 11:42:32 »

sorry, last picture was my fault. I forgot to add portal to exclusions when use global material overriding

8

[Max] I need help! / Re: Low lighting areas noise

« on: 2016-05-12, 11:29:12 »

How can I remove previous post?

Here is 100 passes, no lights but Corona Sky, with portal in the window. Still looks ugly :(

9

[Max] I need help! / Re: Low lighting areas noise

« on: 2016-05-12, 10:31:05 »

Try this:

Remove the curtains,
Delete the glass windows,
Add a portal on the window
Use use Corona Sky
Override the material with a simple RGB 180-180-180
turn off the lamps and the monitor
Remove the carpet
MSI= 10
Maybe GI VS AA 24

And see what happens. I think you will have less noise
Now, turn on the material, lights etc... And you will find where is the problem.

Good luck

Applied these steps and got  strange result. White dots inside a window.
I thought that something wrong with window frame and replaced it with simple extruded spline which intersects wall so that light cannot came from there.

Any ideas?

10

[Max] I need help! / Re: Low lighting areas noise

« on: 2016-05-12, 04:57:08 »

Guys, thanks for your replies.

I will try your suggestions

11

[Max] I need help! / Low lighting areas noise

« on: 2016-05-11, 18:16:36 »

Hi guys

I am new to this forum and Corona render.

I think my question is very popular, but I am pretty sure that every scene has it's own reason for noisy areas on final renders.
Below is my render.

Summary details and questions:
1) 1600x1200, 180 passes, 2 h 30 mins. My PC is i7 2600, 16 GB RAM - is that normal time or should I look for heavy materials/lights in the scene? What passes number is good with scene like mine?
2) Lighting.  There is VRayHDRI with HDRI map in Corona environment slot. CoronaPortalMtl in the windows. No holes behind the camera. 3 corona spherical lights inside the ceiling light. 2 corona IES lights to the left on the camera (not on the render)
3) Curtains. CoronaMtl with bitmap opacity mask, transcluency and AlphaMode = "Always Transparent"
4) Ceiling is white with 0.7 level, no reflection. Walls are Glossines 0.4 and Reflection 55 and with bump

As you may see there is noise in the corners at the top of the table and on ceilings.
Walls are also looks more noisy rather than bumpy with glossy reflection.
Also, colors are unnatural. But most likely photoshop will help.

Will appreciate any advices.

Let me know if you need any info regarding the scene.

This is full size link: http://s020.radikal.ru/i713/1605/8a/287251a1dfa2.jpg