RT not recognising VRay material adjustments.

[re:FORM]

I assume this shouldn't be the case, but if I change the colour of a material in the material editor, it isn't updating in my RT active shade viewport. Is there something wrong with my setup?
Vray 3.3 Max 2016. NVidia GTX 580. RT running CPU mode.

[vlado]

Which material editor (classic or Slate)? Which V-Ray build - 3.30.03 or 30.30.04?

Best regards,
Vlado

[re:FORM]

Hi Vlado,
Thanks for the reply.
VRay 3.30.04, Slate and classic.
This applies to diffuse and reflection etc,
I have emailed a screengrab to you.
Thanks again.
Patrick.

[matanov]

Hi Patrick,

Is it reproducible if you don't use / uninstall "Mission control" ?

[re:FORM]

Damn, it is Mission Control.
It is possible it is blocking vray from picking up the material change callbacks... I'll need to dig deeper to check.
Vlado, what method does VRay use to identify material property changes?

[yavor.rubenov]

Hello,

We get notification through Max notification system - NotifyRefChanged and INodeEventCallback.

Best regards,
Yavor

[re:FORM]

Thanks Yavor, sorry I didn't realise you were from Chaos.
I don't suppose you might know why my code might be causing your callback to fail? I can't think where I might be overriding a VRay specific callback.
I'm not using "NotifyRefChanged" or "INodeEventCallback", but perhaps the maxscript names for these are different to the C calls.
My callbacks regarding materials are as follows. Is it possible we have the same callback IDs which causes my callback to override VRays?

-- MATERIALS
callbacks.removeScripts #mtlRefAdded id:#rssn_mtlRefAdded
callbacks.addScript #mtlRefAdded "rssn.on_mtlRefAdded" id:#rssn_mtlRefAdded
callbacks.removeScripts #mtlRefDeleted id:#rssn_mtlRefDeleted
callbacks.addScript #mtlRefDeleted "rssn.on_mtlRefDeleted" id:#rssn_mtlRefDeleted

[yavor.rubenov]

The C++ Max API doesn't use named callback IDs like in MaxScript so I don't think that is the problem.
I tried to add some callbacks like you do and just print some text inside the callback functions - RT still updates as expected.

Maybe it's something related to the things you do inside the callback code ? I haven't seen a case when Maxscript callbacks mess with the C++ API code so I don't have any idea what might be happening..

I guess you could try to comment out some of the callbacks to see which one is causing trouble ?

[re:FORM]

Thanks,
Yes, I've isolated to the "callbacks.addScript #mtlRefAdded "rssn.on_mtlRefAdded" id:#rssn_mtlRefAdded" callback.
I'll dig in to see what I'm doing that might be the problem.
Thanks for your help!
Cheers
p.

[re:FORM]

Actually, it's the when I remove the callback prior to adding it that breaks RT.

callbacks.removeScripts #mtlRefAdded id:#rssn_mtlRefAdded

Removing just the specific callback by ID with : callbacks.removeScripts id:#rssn_mtlRefAdded doesn't break RT anymore!
So, problem fixed. I should have been removing my callbacks by ID rather than by type.

Thanks again for your patience and support.
Patrick.

[yavor.rubenov]

Glad that you found it out

[re:FORM]

Of course I should have assumed my code was at fault to begin with!