So another really big issue with the bump maps that kind of make Corona not production ready at all :\
Turns out that if you are using bump maps without nesting them in the Corona Bitmap first you get about a 50% speed penalty. As soon as you nest it in a CBitmap then the rays jump back up again.
I’m attaching a quick video illustrating an issue. Do note that the scene is really simple - Imagine getting a speed penalty like this on a scene that needs 4 hours to render :\
Anyway, using the CBitmap by itself isn’t a problem but CBitmap doesn’t work with the Layer shader and because the Projector shader is broken too (see my other bug reports) you basically can’t scale bump maps in Corona for Cinema 4D. I hate to be negative here but thats like… A super basic thing to do.
Oh right, totally forgot about your thread! Yes Sir, I have a dual socket 2696v3 system and after going through your thread again I feel like we have the exact same issue.
And while the CBitmap solves the halving of the rays you do lose the ability to scale / transform bump maps with it which in my opinion renders it useless for this purpose.
