growfx and rt

[jironomo]

Getting a problem with growfx and Vray RT (CUDA). Firstly, the growfx object doesn't even show up in the render in RT.... its invisible.

And once i start rendering with RT i can't see any changes I make to the growfx object in the viewport (or in the activeshade window when using activeshade).

Not sure if a vray problem or a growfx problem. Anyone else experiencing this?

[Svetlozar Draganov]

GrowFX geometries are not supported in V-Ray RT.
It looks it works fine with IPR rendering so you can use it as a workaround.

[TerriBrown3D]

Hi guys,

Just wondering if this is a Chaos thing or an Exlevel thing? I use GrowFX on 99% of my projects - it's not really feasible to collapse them all into meshes before adding them to Forest Pack objects.

Thanks

[^Lele^]

You can add a turntomesh modifier on top of them, and it'll keep your stack intact.
I have no experience with growFX, so i have no idea of what class their nodes are.
But if they can get collapsed to a mesh, then they can also support the modifier.

[piotrus3333]

growFx objects used to work with ForestPro just fine.
but still nothing as robust as turning them into VRayProxies first.

[TerriBrown3D]

GrowFX and Forest Pro work perfectly - that's not the issue. The issue is that Vray GPU doesn't seem to recognise GrowFX objects. I could try adding something on top of the GrowFX stack - just seems like a bit of a hack workaround.

PS if you are working with Forest Pro you shouldn't need to turn anything into VrayProxies first...unless it's a massive tree that's chowing your file size.

[yavor.rubenov]

Hello,

What are your Max, V-Ray and GrowFX versions ? The topic is from 2017 and we've added changes related to GrowFX since then so it should be working.

Best regards,
Yavor

[TerriBrown3D]

Vray 5 and latest build of GrowFX and Max 2021.Max is a trial version as I want to upgrade - I'm usually on 2014. Waiting with baited breath for Autodesk to release Indie version.

[yavor.rubenov]

Then it would be best if you could send a problem scene to support (at chaosgroup.com) so that we can see what is going on.

[piotrus3333]

try displaying GrowFx objects as full meshes - don’t use GrowFx’s simplified preview. this should work with GPU. it used to work in old RT with objects created by some plugins.
use ‘display as box’ in Max if needed.