Thank you for the explanationby Dade » Sat Aug 10, 2019 3:32 pm
Racleborg wrote: ↑
Fri Aug 09, 2019 6:21 pm
I am not sure if this is relevant to the currently discussed Bump issue, but I don't appear to be getting any Bump effect be with the Checkerboard Texture like it does with other textures such as Distorted Noise?
This should be normal: the bump is proportional to the difference of 2 adjacent pixels, if the pixels have the same color (like inside a check), there is no difference and the normal is unmodified. So it is modified only on the sharp edge between 2 checks.
Shadow Terminator problem
Re: Shadow Terminator problem
Re: Shadow Terminator problem
demonstration of the problem on a simple plane and weak bump
bump no bump file
bump no bump file
Re: Shadow Terminator problem
I should have fixed the problem, this is a rendering before the fix:provisory wrote: ↑Sun Aug 11, 2019 9:27 am After some comparisons I think again, that something is not perfect with LuxCore bump mapping.
Left side is highly subdivided and has displacement modifier with the bump texture.
Right side is low poly and has bump mapping with the same bump texture.
Cycles:
bump-test3-cycles.jpg
LuxCore after shadow terminator taming:
bump-test3-luxcore_new.jpg
LuxCore before it:
bump-test3-luxcore_old.jpg
and this after the fix:
Extreme bump scale values are now handled far better, this was before:
and this after the fix:
Re: Shadow Terminator problem
This looks fantastic, how about long flat planes with bump, won't they look like they collect dust?Dade wrote: ↑Tue Aug 20, 2019 9:02 amI should have fixed the problem, this is a rendering before the fix:provisory wrote: ↑Sun Aug 11, 2019 9:27 am After some comparisons I think again, that something is not perfect with LuxCore bump mapping.
Left side is highly subdivided and has displacement modifier with the bump texture.
Right side is low poly and has bump mapping with the same bump texture.
Cycles:
bump-test3-cycles.jpg
LuxCore after shadow terminator taming:
bump-test3-luxcore_new.jpg
LuxCore before it:
bump-test3-luxcore_old.jpg
old.jpg
and this after the fix:
new.jpg
Extreme bump scale values are now handled far better, this was before:
old2.jpg
and this after the fix:
new2.jpg
will give this a go as soon as it's "cooked"
Re: Shadow Terminator problem
Your test scene seems to work fine with the new version:
Re: Shadow Terminator problem
Amazing, thanks!
Re: Shadow Terminator problem
Nice result and collaboration, thanks both for your investment !
Re: Shadow Terminator problem
Just to confirm, both shadow terminator fix and bump mapping is now working excelently and in 2.81 daily build! Perfect!
Re: Shadow Terminator problem
I made some tests, and I also think it works nicely.
...except the problem with the translucent materials:
http://forums.luxcorerender.org/viewtop ... f=4&t=1325
...except the problem with the translucent materials:
http://forums.luxcorerender.org/viewtop ... f=4&t=1325