displacement blend materials

[Mikhalenko]

Hello.
I have issue/question about blending materials and displacement. When I trying blend a few materials with VrayBRDFLayered and use the same texture for blending displacement maps I have an issue that you can see in screenshot below (with red ground), displacement and texture for layered material didn't much. On second screen I'm using the same texture for mixing displacement but apply only simple VrayMaterials with the same texture that I use for displacement mix in diffuse. I suppose that blend for VrayBRDFLayered should work the same as for VrayMtl

[Gosho.Genchev]

Hey there,

it seems to me that the same problem is present in both your images. I think you've managed to hit a bug with the way the Bercon texture is mapped when the Size option is very low and no UV mapping is specified.

I have attached an image comparing the two above - can you please check it out and tell me if I'm looking at the right place ?

Is the problem resolved if you increase the Size option on the Bercon Noise ?

Also, if you create UVs for you geometry and plug a UV Channel Name VOP into the uwvgen input of the Bercon Noise, you should be good to go - works for me at any Bercon Noise Size. I've uploaded an example file here: https://drive.google.com/file/d/1CY3...ew?usp=sharing

Thanks!

[Mikhalenko]

Hello. Thanks for reply. I have tried change size of Bercon Noise, it's not help. I had UV on my geometry in those examples. I have attached render of your scene, It's similar that you have? BTW, I also tried attach uwgen, it's no helped. I start have issue with VrayColor in blend, displacement doesn't work. I'm attaching my scene. Can you please check?
Also, I have noticed that if I have UVqucikShade mode with render flag, I have no diffuse in the render. it's bug?
https://drive.google.com/file/d/1zpv...ew?usp=sharing

[Mikhalenko]

Btw, I'm using Houdini 17.1.173

[chakarov]

Hello Mikhalenko , I've checked your scene and can't notice any differences between layered texture and layered material. There was an issue with layered texture and it were exported in opposite order, but this is fixed in latest nightlies. Is the problem reproducible with last stable nightly build? What is your V-Ray build number?