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A simple dark haze plane that won't crash iray?

DiasporaDiaspora Posts: 439
in Technical Help (nuts n bolts)

So, way back when with Mental Ray for Maya I had a trick up my sleeve for creating simple haze by basically creating a few dozen planes closely placed one in front of the other and then making them all very slightly opaque which would add up to creating a haze for distant objects.

I tried doing that technique in iray for the first time tonight aaaaaand it crashed iray. 

So, what's the correct way for accomplishing what I'm after in iray?

Comments

  • DiasporaDiaspora Posts: 439

    To explain it another way, does there exist maybe something like a shader that I can apply to a simple geometry like a cube and that can kind of create that haze within the confines of the cube?

  • felisfelis Posts: 4,189

    Iray supports VDB files, but then you have to find an appropriate file first.

    Your idea with planes have been done with several products, so as a concept it should work.

    Related to crashing I can only think of if you used tiff files. That has crashed Iray for a period, and not certain it is fixed.

  • DiasporaDiaspora Posts: 439
    edited August 2023

    Apparently what fixed it for me was to make the plane on the opposite end from the camera completely opaque because I think what crashes iray is that it doesn't know how to figure out the little bit of transparency that it's still trying to calculate. The last plane acting as a hard light blocker seems to fix it.

    Post edited by Diaspora on
  • DiasporaDiaspora Posts: 439

    damn, now it inexplicably doesn't work again. I'll look into some of the vdb products and see if that can get me where I need to go.

  • DiasporaDiaspora Posts: 439

    Ok, seems the issue I am having has nothing to do with the planes, looks like later I'll have to try to provoke this crash again and see if I can spot in the log file what's causing it. 

  • DiasporaDiaspora Posts: 439

    2023-08-08 03:11:26.321 [WARNING] :: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(369): Iray [ERROR] - PLUG:PLUGIN ::   0.0   PLUG   plug error: Library C:\Program Files\DAZ 3D\DAZStudio4\libs\iray\avformat-58.dll: symbol "mi_plugin_factory" not found.

    I'm getting a lot of weird warni-ng messages like this, why would it not be able to find these dlls?

  • PerttiAPerttiA Posts: 10,012

    Diaspora said:

    2023-08-08 03:11:26.321 [WARNING] :: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(369): Iray [ERROR] - PLUG:PLUGIN ::   0.0   PLUG   plug error: Library C:\Program Files\DAZ 3D\DAZStudio4\libs\iray\avformat-58.dll: symbol "mi_plugin_factory" not found.

    I'm getting a lot of weird warni-ng messages like this, why would it not be able to find these dlls?

    Everybody has that, it is not a problem. 

  • DiasporaDiaspora Posts: 439

    Must have been something wrong with my drivers, I updated my 4090 drivers and have done ten batch renders since without this error coming back.

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