Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: Jpjapers on 2016-04-04, 12:51:19

Title: Why is the interactive result different from a render?
Post by: Jpjapers on 2016-04-04, 12:51:19

Ive been doing some work with a new building development and looking at how the sun casts through various areas throughout the day. The interactive rendering is great, i get nice shadows from the daylight system into the interior. however when i render its very diffused and i dont get those crisp edges anymore.
Any ideas?

Thanks
Jack

Title: Re: Why is the interactive result different from a render?
Post by: Jpjapers on 2016-04-04, 12:55:25

For some reason this fixed itself when i turned the daylight system off and on again

Title: Re: Why is the interactive result different from a render?
Post by: maru on 2016-04-04, 12:56:10

That's strange. Are you using ambient occlusion in any scene material?

Title: Re: Why is the interactive result different from a render?
Post by: Jpjapers on 2016-04-04, 13:05:42

I dont believe so, its a straight revit > max with all materials converted to standard via Autodesk material converter.
It was kind of as if the sun was still casting light but it was not actually lighting the pixels on the floor.

Title: Re: Why is the interactive result different from a render?
Post by: maru on 2016-04-04, 13:29:48

Is there solid glass in the windows?

Title: Re: Why is the interactive result different from a render?
Post by: Jpjapers on 2016-04-04, 13:48:06

There is yeah. Corona Mtl Glass

Title: Re: Why is the interactive result different from a render?
Post by: maru on 2016-04-04, 14:01:05

Quote from: jpjapers on 2016-04-04, 13:48:06

There is yeah. Corona Mtl Glass

So you are probably getting this:
"Reflections of light seen through solid glass may appear dark"
https://coronarenderer.freshdesk.com/support/solutions/articles/5000516180
Solution is to switch to thin glass, or use rayswitch.