Very slow ShadowCatcherMTL

[rdm]

Hi, i have small problem setting up ShadowCatcher. I'm rendering a lot of packshots, and I need pure white background with shadows under the object (hero), and I'm trying to cutoff some render times. Corona 1.7 (hotfix 2).

1. Background renders very long in opposite to main hero. See attachments, 01.jpg (white bg) is with the floor = 44min, and 02.jpg (black bg) is without the floor = 13,5min.
2. Floor is illuminating my hero, even if there are no lights in the scene. Which is very frustrating.

I'm attaching also settings for shader.

Thanks!

[romullus]

You can take a look (and download) at similar scene setup in this topic: https://forum.corona-renderer.com/index.php?topic=11345.0

As for bounced light, you can plug shadow catcher into rayswitch material and replace global illumination slot with basic dark material.

[maru]

Note to anyone with similar problems: in the latest daily build we have faster shadowcatcher rendering. Testing appreciated!
https://forum.corona-renderer.com/index.php?topic=17972.msg117440#msg117440

[Christa Noel]

Note to anyone with similar problems: in the latest daily build we have faster shadowcatcher rendering. Testing appreciated!
https://forum.corona-renderer.com/index.php?topic=17972.msg117440#msg117440

Greaatt! Thanks =D