Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: Alex.A on 2017-07-31, 19:10:31

Title: Displacement and normal map problem
Post by: Alex.A on 2017-07-31, 19:10:31

Hi,

I'm experiencing some problems with normal maps and displacement where the edges appear jagged. Does anyone know what might be causing this?

Title: Re: Displacement and normal map problem
Post by: romullus on 2017-07-31, 20:09:32

Unplug CoronaNormal map from displacement slot and plug it one position higher - into bump slot. That should remove jagginess ;]

Title: Re: Displacement and normal map problem
Post by: Alex.A on 2017-07-31, 20:24:49

I tried, but the effect is far from it needs to be.

I've used displacement without issues before.

Title: Re: Displacement and normal map problem
Post by: romullus on 2017-07-31, 21:48:37

Then you have to make your displacement map properly. Map that you are using won't work as displacement. If you want to know why, just open it in photoshop and convert it to greyscale. It should be very obvious then why it can't work as displacement.

BTW, those jaggies are from jpeg compression - displacement is much more sensitive to it than normal maps.

Title: Re: Displacement and normal map problem
Post by: Alex.A on 2017-07-31, 22:22:21

I really can't understand what is wrong with the normal map I've made. Here's the original png I'm using.

Title: Re: Displacement and normal map problem
Post by: romullus on 2017-08-01, 00:02:26

There's nothing wrong with your normal map really, it's just that you're using it wrong. Normal maps goes into CoronaNormal texmap and then into bump slot, displacement maps goes well... into displacement slot. Not the other way round. If you struggle to understand how normal map differs from displacement, you can go here: https://www.textures.com/download/3dscans0004/125602 download both displacement and normal maps, load them in photoshop, convert normal map to greyscale and pay close atention on how they do differ from each other.

Title: Re: Displacement and normal map problem
Post by: Alex.A on 2017-08-01, 00:25:50

Thanks romullus. I think I understand what is going on here now. I've thought I was using displacement on the jar scene as well but I was wrong. That's what was keeping me confused.