Vray Scene Converter

[olly]

This has bugged me for a while, but I kept forgetting to bring it up here:

When using the "Vray Scene Convertor" the resulting materials have their Diffuse, Bump, Displace & Opacity maps turned off, but only if the slots weren't occupied & "on". It also turns "Trace Reflections" off.

Is this by design & if so, why?

Cheers,
Olly

[MoonDoggie]

as far as the "view texture in viewport" being checked or unchecked, the only thing I can think is the max bug with changing the map while that is checked. Unchecking them all first, avoids this problem.

[olly]

Sorry if I wasn't clear: I wasn't talking about the "show map in viewport" feature. I'm referring to the tick boxes that enable/disable maps being applied to a material...

Cheers,
Olly

[DaForce]

The unticking of the trace reflection tick box is to simulate the fake highlights of the standard max materials which dont need reflections to be used. With vray its all based of glossy reflections. So to mimic the max material reflections need to be disabled but still have the glossy highlight part visible.

As for the disabled materials part.. that is odd. Cant say I have had that happen to me.

[olly]

Really? Can you repeat this behaviour on your setup? Just create a standard mat & run the scene converter, then check the resulting Vray mat's map slots...

It's been happening from me since I started using 1.47.03 and above.

Cheers,
Olly

[DaForce]

Its just the way vray interprets the standard max materials glossyness spinner. As by default max has a rather glossy material.. set to 10. So vray converts that. If you set the glossy spinner to 100 then vray interprets that as closer to 1.0 glossy.. 0.9 infact.
And its just unticking the reflections to try match the glossy of the max material which as i mentioned isnt reflection based as its a fake.

So it is a feature of the converter.. maybe an annoying one but a feature none the less

[olly]

Sorry DaForce, I meant can you repeat the behaviour of the Diffuse, Bump, Displace & Opacity map slots being unticked? You said you hadn't had it happen to you...

I appreciate that the unticking of "Trace reflections" is by design now...

Cheers,
Olly

[DaForce]

ahhhh right.. got ya.

testing now.

[olly]

How'd you get on DaForce?

[DaForce]

ah yeah.. sorry.. got a little side tracked

For me as long as there is a map in the slot it wont untick it.
However if there is no map in the slot it will untick diffuse, bump, displace and opacity only. Which is a little weird.

So yes your right. Odd how the converter does that.

[RErender]

pretty easy to edit the script to make it do what you want it to.

[olly]

I didn't realise the converter was a user accessible script; I just assumed it was hard-coded into Vray.

I've looked at the script and it's written to set the status of the map as it was on the original material. The unwanted behaviour is occurring because the native Standard & Raytrace mats have their map slots off until you assign a map, where Vraymtl's have them on.

It just needs a check added to fix this; I'll have a look at it and post the modified script when it's done...

[olly]

A modified version of the script can be found here:

Put the file in <your max folder>/scripts/startup/ making sure to backup the original. File is unsupported, so use at your own risk!

I've added a check so that if a map slot is undefined it leaves the corresponding vraymtl slot alone, and if it is defined it matches the status as before...

Let me know if there are any problems.

Cheers,
Olly