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Displacement doesn't work on G3 / G8 figures in IRAY

JuNeJuNe Posts: 87
in Technical Help (nuts n bolts)

Hi,

the other day I tried to give Darius 7 some deep displacement for a cyberline in IRAY. I set up a displacement map, B/W only, Strength to 100%, Min to -0.25, Max to 0, Dips SubD to 3 - standard for me, up to then.

But the displacement didn't work. I tried setting to ridiculous values, as 200 for strength, -500 for Min, I increased Figures Resolution, tried then G8F/G8M/G3Mstandard. Nothing either.

Converted all Surfaces to UberSurface - works.

What has happened here and is there ANY possibility to give IRAY microdisplacement back?

Yours,

Lessa

Comments

  • JuNeJuNe Posts: 87

    I "solved" the problem, only to unravel another questionable feature of IRAY - you can only have as much MIN displacement as you have MAX. -1 / +0.1 makes IRAY render to -0.1/0.1. -1/+2 makes IRAY render to -1/+2. WHYY?

  • Richard HaseltineRichard Haseltine Posts: 102,882

    Yes, this is an issue that came up a few weeks back. I thought I had bug reported it but maybe it was just discussed because different people were getting different results.

  • JuNeJuNe Posts: 87

    Thanks for the info! (Sorry for delay, though I had commented already).

    Do you think there is any chance the programmers will fix the displacement of IRAY? It's a great render engine, no doubt, but this is the ONE flaw that bugged me from the beginning - 3DL had microdisplacement, why doesn't IRAY? Since I work a lot with closeups, I wor a lot with disp.

  • Richard HaseltineRichard Haseltine Posts: 102,882

    It's not something Daz can fix, it would require chnages in the Iray engine which is purely nVidia's work.

  • Oso3DOso3D Posts: 15,047

    I figured out a solution in OMS1, though it requires wrangling with the rest of the complex shader. At some point I might try releasing a shader that just addresses this issue.

     

  • JuNeJuNe Posts: 87

    @Richard: Thanks, I feared that. I wonder if there is any chance that NVidia'll fix it if enough of us complain. But -

    @Oso3D: - if there is any workaround, I'd love to hear about it (or buy the shader ;)). I only hope it doesn't involve scripting or the shader mixer, I never got that ^^ (although it'd be another good excuse to give it a go again)

  • Oso3DOso3D Posts: 15,047

    Shader mixer dark arts. :)

     

  • JuNeJuNe Posts: 87

    Aargh, I knew it! XD *mumblemumble* Have I gotta got through that nody labyrinth.... *mumblemumble* ^^

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