material selection tag

[nunomatos]

Hey guys
can some one explain what i'm doing wrong, because I can not make material selection tag to work?
thanks
best regards
nuno
ps- i think this was already discuss here but i can't find

https://www.dropbox.com/t/lUl24lBFOROXZ3gb

[sirio76]

Hi Nuno, you just need to use two separate copies of the same material, it was like that also on 3.7 version.

[nunomatos]

Hi Stefano
thanks for the answer... but actualy on 3.7 we could use the same material wiht diferent selections and orientations...:S
that is a shame that we can not use a unique material but with different orientations... for that i prefer to split the roof and orientate the same material.
thanks anyway
here is a screenshot from the 3.7 version
best regards
nuno

[aleksandar.kasabov]

Hello nunomatos,

You can still do that in V-Ray 5 for Cinema4D. Just keep in mind that you will need to use UVW mapping for the projection type of the materials. Please check this screenshot. You can also find a simple test scene attached below.

[nunomatos]

Hi aleksandar.kasabov
thanks for this. I know that with proper UVW we can use the same material but you know that is faster to add a cubic projection map and adjust
but i'll follow
best regards
nuno

[nunomatos]

by the way using UVW you don't need to have selection tags or two material tags... but for that you will need to unwrap things:S
but thanks
nuno

[YunalZobu]

EDIT: I was too quick to post. The results I was getting are using an internal version, apologies for the confusion I might have created.

can you send over that sample scene?
I tried to reproduce it on my side, but seems to work as you've expected

[zAppledot]

This is something i ran into recently too. For example, when texturing wood grain on cabinet doors, i used to use selection tags to isolate parts of the mesh for mapping the wood grain correctly.

I have attached an example c4d file with a couple examples that used to work in vray 3.7.

The other use case for selection tags is to instance geometry with selection tags(no materials) and apply the materials with selection tags to the instances. We use this to quickly create variations of the original object. This used to work in vray 3.7 and does not work in vray5, i believe it is related to the OP's issue.

My current workaround is to split the mesh or generate uw maps from the cubic maps.

[nunomatos]

by the way using UVW you don't need to have selection tags or two material tags... but for that you will need to unwrap things:S
but thanks
nuno

Hi Yanul
ahhh you get a previledge.... hope we can get that internal to...
thanks anyway for getting that info
best
nuno

[aleksandar.kasabov]

Hello all,

This seems to be a bug on our side and I have reported it (bug ID: VC4D-1292) to our developers for fixing. I will let you know once we have more information on the matter. Thank you.

[nunomatos]

thanks for clarification aleksandar.kasabov
best regards
nuno

[aleksandar.kasabov]

Hi all,

This bug has been fixed and the fix is now in our latest stable build. You can download and install the build from here.

Thank you.

[nunomatos]

Hi aleksandar.kasabov thanks for the update. i've confirm right now and its working
best
nuno

[tomschmid]

Runs very unstable here.. especialy when i load big textures and disable mipmap it crashes very often. I downgraded to the februar build and the crashes disapeared.. sad i realy ned this bugfix with the selection-tags

[deyan.hadzhiev]

Hi tomschmid , can you provide more details on those crashes? Can you tell us if are you using V-Ray GPU and some hardware specifications? Are you using classic materials or node materials? Also if you can provide a simple test scene reproducing the issue it would help us greatly to find the reason.

Thanks in advance.