V-Ray standalone parameterOverride for materials.

[Fridayvfx]

Hey,
I’m sure I did it correctly in the past but I currently cannot get the parameterOverride to work for materials on a scene that I’ve exported from 3ds max.

The return-help from vray states that parameterOverrides should be done like this:

-parameterOverride=“SettingsImageSampler::type=3”
-parameterOverride=“TexFresnel::fresnel_ior=1.3”
-parameterOverride=“VRayMtl1@diffuse.color=Color(1.0,0.2,1.0)”
-parameterOverride=“VRayMtl2@diffuse.color_tex=checker1”

So Plugin overrides like Image sampler settings and stuff work fine this way, but as soon as I want to change material colors or light I cannot get it to work.

For example, I have a Material in my scene that is declared like this in the vrscene file exported from 3ds :

https://paste.ofcode.org/3asQpfsxCN6QWd6vSexuqab

But when I use the convention stated in the help File I get this output:

I also saw that in the vrscene file you guys define an internal numbering for materials inside the vrscene file (in this case mtl_brdf_0 - mtl_brdf_X) so I’ve tried this as well but it’s not working.

What am I doing wrong?

Thanks for caring
-Robert

[hermit.crab]

As already stated in the -help description, the parameter override option should look like this: “<plugin-parameter-id>=<value>”, where <plugin-parameter-id> - can be two formats - PluginType:: parameterName or pluginName.parameterName.

In the .vrscene it is written like this (depending on the scene): BRDFVRayMtl Material__25@mtl_brdf_0, where BRDFVRayMtl is the type of plugin and Material__25@mtl_brdf_0 is the name of the plugin. Below that (i.e. diffuse=AColor(0.5019608, 0, 0, 1)) are the names of the parameters.

That being said the override option should look like this: -parameterOverride=“Material__25@mtl_brdf_0.diffuse=AColor(0,0,0,1)”
Same thing for lights: -parameterOverride=“VRayLight001@light_2.enabled=0”

[Fridayvfx]

Ah! Got it! Thank you!
-Robert