Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] Bug Reporting => Topic started by: sirio76 on 2019-01-08, 00:21:37

Title: Bug in bump mapping
Post by: sirio76 on 2019-01-08, 00:21:37
Since I've started to use Corona I've always had the impression that were something wrong about bump mapping, in particular a flatter look compared to other renderer.
Now I've discovered this, using Cinema4d noise gives proper bump(I've also added a checker shader on it just to be sure to get the proper scale), using the same noise baked into a texture(first image) and used instead of the native noise gives a totally different look and a way flatter bump mapping(a thing I noticed with every shader I've builded).
I've tested the same situation on other engines and work as expected so it should be an error with Corona bump.
If that's the case it's a big issue and should be solved ASAP.
I'm on OSX 10.11.3, C4d R20 latest Corona beta version, if needed I can provide a scene.
Title: Re: Bug in bump mapping
Post by: sirio76 on 2019-01-08, 16:52:39
Another example, bitmap checker VS procedural checker, there's something wrong, maybe it's related to internal managing of the delta(BTW this parameter should be available in the bump channel).
 
Title: Re: Bug in bump mapping
Post by: sirio76 on 2019-01-08, 16:54:46
Uploaded the file as: 1546962851_bump-scene.zip
Title: Re: Bug in bump mapping
Post by: metopa on 2019-08-07, 11:58:49
Hi @sirio76,

sorry for the huge delay. We've added your issue to our buglist
Title: Re: Bug in bump mapping
Post by: metopa on 2019-08-07, 11:59:16
Internal tracking number: (Internal ID=383276923)
Title: Re: Bug in bump mapping
Post by: sirio76 on 2020-04-24, 21:36:31
Hi @sirio76,

sorry for the huge delay. We've added your issue to our buglist

Just noticed you have responded to the report, thanks for looking in to that.
Any news about the issue?