skin shader a la Alsurface pleaseeee

[Bigguns]

Do you have one vray 2d displacement modifier for the whole object, or it's many object with many 2d displacement? it dont work on 1 object. Correct me vlado if I'mn wrong ( did not tired in the latest vray , was it corrected ) ? for character, the 2d displace is light years ahead of the 3d one... nothing to compare here ^^

Vlado, for the bump ,that's what I though, but I'm not sure in Arnold it does that, can you verify that ? Maybe they found a way to make the bump not doing that.. I don't know.. otherwise bump is useless... it's why normally I use 2d displace and no bump.. does normal bump does the same Vlado? I never use normal bump.. the few time I used that, I found it was giving me some weird reflections ..

[jstrob]

Ok! Yes, it's 3 objects and one displacement for each one.

I wonder if it could could work one a single object if we use different UV id and face id. you would need many displacementmod modifiers for sure.

[jstrob]

I just posted this comparison in HD this time:

[Bigguns]

you cant use many vray displacement on the same mesh it will only always take the one at the top..

[Morbid Angel]

you cant use many vray displacement on the same mesh it will only always take the one at the top..

yes you need to mix actual maps rather then displacement mods.

[jstrob]

Ok now I could reproduce and understand your problem exactly Bigguns. I made a simple moon in zbrush. I separated the UVs in 2 so half has the uv in U0,V0 and the other half has its uvs in U1,V0. When I try to displace that with the V-Ray displacementmod I get big problems if I want to use the 2D mapping. For 3D mapping we can do it by creating a second UV map Channel and moving the UVs in U1,V0 to U0,V0 (I did an offset of -1 in U). Then we can use a composite map with the 2 displacement maps (both in normal node) one with map channel set to 1 and the other set to 2 (and tile is off for both). Then V-Ray can render the moon correctly.

But the problem with the 2D mapping is that it tiles the map in the uv no matter what.

If 2D mapping would stop tiling the map in the UV we could use it that way like I did with 3d mapping.

The other problem is that we can't use 2 displacementmod (even with 3D mapping). If we could do that it would be another solution.

It would be even better if the vrayDisplacemnentMod could see the UV where they are instead of having to move them all in U0,V0. That way we could use only one dipslacement mode and choosing a settings for the UV tile to look at in the HDRI map itself.

If you want a simple scene to see what we are trying to do Vlado: here is my moon scene.
http://www.phylacterecola.com/strob/...oon2UV1Obj.rar

[Morbid Angel]

Ok now I could reproduce and understand your problem exactly Bigguns. I made a simple moon in zbrush. I separated the UVs in 2 so half has the uv in U0,V0 and the other half has its uvs in U1,V0. When I try to displace that with the V-Ray displacementmod I get big problems if I want to use the 2D mapping. For 3D mapping we can do it by creating a second UV map Channel and moving the UVs in U1,V0 to U0,V0 (I did an offset of -1 in U). Then we can use a composite map with the 2 displacement maps (both in normal node) one with map channel set to 1 and the other set to 2 (and tile is off for both). Then V-Ray can render the moon correctly.

But the problem with the 2D mapping is that it tiles the map in the uv no matter what.

If 2D mapping would stop tiling the map in the UV we could use it that way like I did with 3d mapping.

The other problem is that we can't use 2 displacementmod (even with 3D mapping). If we could do that it would be another solution.

It would be even better if the vrayDisplacemnentMod could see the UV where they are instead of having to move them all in U0,V0. That way we could use only one dipslacement mode and choosing a settings for the UV tile to look at in the HDRI map itself.

If you want a simple scene to see what we are trying to do Vlado: here is my moon scene.
http://www.phylacterecola.com/strob/...oon2UV1Obj.rar

[ATTACH=CONFIG]31873[/ATTACH]

[ATTACH=CONFIG]31874[/ATTACH]

[ATTACH=CONFIG]31875[/ATTACH]

Hi jstrob, if you simple enter <uvtile> in place of uv coords of the texture you dont need to mix anything. See attached scene

uvtile_method.zip

[jstrob]

Ok thanks! morbid angel!

Very good trick

There are other tags like that all explained in the V-Ray HDRi doc
https://docs.chaosgroup.com/display/...e+%7C+VRayHDRI
And the UDIM naming from MARI also has a tag!
The one for mudbox also works for zbrush naming.

And we can choose the preview image in the material editor in the UDIM/UVTILE preview area of the VRayHDRI image. Really cool! The only drawback is that those images don't appear in the max asset tracking dialog AND that it doesn't work with 2D mapping either.

[Morbid Angel]

yeah it was a feature requested by max users a lot I believe that's why its implemented.

the mari tag is <UDIM>, the zbrush tag is <uvtile> with lower case, and mudbox tag is <UVTILE> with upper case.

[jstrob]

Ok yes because Zbrush starts at zero, it's not the same as mudbox! Thanks again!

[FSGFX]

is there a way to get this new alshader working with maya..?

[vlado]

I'm working on a Maya wrapper right now, I hope to push it to Github in the next few days.

Best regards,
Vlado

[vfxronin]

I'm working on a Maya wrapper right now, I hope to push it to Github in the next few days.

Best regards,
Vlado

hey vlado,

just wondering if this is going to be something that would come with V-ray out of the box or would it be open source thing where its some thing we will need to manually add?

just wondering if it will make it in to nuke?

[vlado]

I have not decided if the shader will be bundled with the installation yet. It depends on how many people will find it useful.

Once we have the standalone shader it should be easy to support it in Nuke.

Best regards,
Vlado

[jasonhuang1115]

I'm working on a Maya wrapper right now, I hope to push it to Github in the next few days.

Thanks Vlado. Look forward to testing it out.