Environment Fog & Lightmix alpha

[lukepenry]

I posted this recently but didn't realise the problem was the enviroment fog so reposting with an updated title for anyone who may run into this.

I get this alpha issue when using lightmix and enronment fog. when I increase the intensity of the passes in After effects and Vray, they both make the alpha channel visible.

Attached an example.

Thanks

[hermit.crab]

Thanks for the report. This is another method of reproducing an already known issue (internal bug-tracker id: VMAX-11906) which concerns opacity mapped objects, VRayEnvironmentFog, and VRayLightSelects when rendering within 3ds Max. The issue does not occur when rendering via Standalone, so it can be used as a workaround (simply use the .vrscene exporter and select "Export and Render").

[lukepenry]

I don't think i have ever used standalone, is this something that can be rendered on a cloudfarm with plugins etc? why does not appear in standalone?

[^Lele^]

Standalone is behind rendering with GPU, on the cloud, and in a swathe of custom applications users build around it, yes.
It's distributed with your installation, it's called VRay.exe, in the bins folder (f.e.: "C:\ProgramData\Autodesk\ApplicationPlugins\VR ay3d sMax2022\bin\vray.exe".)
You can render with it by using the "export to vrscene" RMC menu, or by manually building its command line (it still needs a vrscene to render.).

Consider standalone to be the bedrock for V-Ray's code.
In general, things happen in standalone first (there is no UI to write, no third-party API to contend with.), and get ported to the various DCC plugins at a later time.
This is also why there may be issues appearing in the plugins, but not in standalone.

[lukepenry]

Interesting, thanks for that info! I am using the CPU for rendering not the GPU btw. Does this change things?

[^Lele^]

Nope, rendering gpu or cpu on vray.exe is simply a flag.