Bump map issue

[dj_buckley]

Just wondering if this ever got resolved? I'm having the exact same issue and it's driving me insane - spent all day trying to fix it on one sofa

[hoch5]

That's a different issue in that scene that we fixed in 3.40;

You are right. I'm sorry for confusing. Just did a quick test with a scene I had trouble with lateley and it's all nice and smooth.

You really do a great job! Thank you for the great support all the time!

[PIXELBOX_SRO]

nice that looks a lot better already!
great job Vlado!

[vlado]

I can reproduce it just fine; I'm looking at several different solutions, I just need to find out one that's not too computationally expensive.

Some quick random change to see if it works:


The original material:


Best regards,
Vlado

[PIXELBOX_SRO]

If you need part of the scene vlado let me know

[vlado]

It's been reported in this thread already:

That's a different issue in that scene that we fixed in 3.40; pls do not cross-post threads like that, it just adds more confusion. That environment variable will not affect PIXELBOX_SRO issue at all - it's a problem that's been around way before that.

Best regards,
Vlado

[hoch5]

It's been reported in this thread already:

http://forums.chaosgroup.com/showthr...487#post683487

Changing the environment variable to get back to the old behavior fixed it for me. But then after updating to 3.40.2 I forgot to set it back and there it's been again.

It happend on GGX to me.

[PIXELBOX_SRO]

btw the geometry is an imported STEP - BODY OBJECT
but i have to say i am gettign this elsewhere no matter what geometry

[PIXELBOX_SRO]

i am usign GTR/GGX set to 2.0, soften at 0
glossiness set to 0.6, reflection mid grey
fresnel at default
bump map is bercon noise with size set to 0.02 world mode (csene is in CM)
bump map value is 35

[vlado]

Which BRDF model are you using?

Best regards,
Vlado

[PIXELBOX_SRO]

does it concern this case too guys?

[pixela]

I guess the bump map adds shadowy detail to the areas in light, but cant add light detail to the areas that were originally shadowed and that where this comes from?

A nice explanation, thanks.

[vlado]

I guess the bump map adds shadowy detail to the areas in light, but cant add light detail to the areas that were originally shadowed and that where this comes from?

Exactly.

Best regards,
Vlado

[Neilg]

I guess the bump map adds shadowy detail to the areas in light, but cant add light detail to the areas that were originally shadowed and that where this comes from?

[vlado]

So basically bump mapping is kind of broken?

Not really, it works as it is supposed to. This particular case can be improved, but it is a consequence of the very definition of bump mapping.

Best regards,
Vlado