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Iray preview mode issue, any ideas?

FSMCDesignsFSMCDesigns Posts: 12,845
in The Commons

This just starting doing this 2 days ago. When I start preview mode or pan around in preview mode, select items, usually hair or clothing or props turn bright blue or pink. it only lasts an instant, the time before the render kicks in and then the render shows up. I have tried it in both GPU and CPU only mode and it's the same. I haven''t noticed any slowdown, fans are all running and my system isn't making any noises, so I don't think it is hardware related. Is this a DS thing I might have triggered somehow?

Comments

  • agent unawaresagent unawares Posts: 3,513

    Special shader? Often the channels (? not sure if right word) aren't named right to play with the OpenGL preview properly and they show up as weird random colors.

  • barbultbarbult Posts: 26,271
    Yes, it seems to be a shader issue. I've seen the same thing.
  • FSMCDesignsFSMCDesigns Posts: 12,845

    Thanks for the responses. Now to figure out why it just now started happening, fun, fun.

  • FishtalesFishtales Posts: 6,214

    I loaded up an old scene and the terradome 3 ground is doing that, one part pink the other blue, but the rest of the shaders are just showing grey.

  • ColinFrenchColinFrench Posts: 649
    edited April 2018

    I've had that happen too. In my case it was a character's skin that turned bright yellow. Odd thing -- only the torso changed color, the head, arms, and legs were fine. Same shader was used on all sections as far as I know.

    As I moved the cursor over different UI elements in Daz, like some of the tabs, the color sometimes went back to normal, sometimes back to yellow. Weird. (Daz 4.10)

    Post edited by ColinFrench on
  • PatrickBPatrickB Posts: 8

    Anyone resolve this? I'm getting it on a few of the more exotic skin shaders.

  • SotoSoto Posts: 1,450
    edited February 2019

    Turn on Per Pixel Shading in Preferences/Interface.

    Custom shaders can show bright preview colors on some or all parts of the figure. Distracting, but harmless.

    Post edited by Soto on
  • TaozTaoz Posts: 10,269
    Hellboy said:

    Turn on Per Pixel Shading in Preferences/Interface.

    Custom shaders can show bright preview colors on some or all parts of the figure. Distracting, but harmless.

    Will it not affect performance (preview lag)?

  • HavosHavos Posts: 5,595

    Switching on "Per Pixel Shading" has some advantages, but will change behaviour somewhat. I know I had it switched on for a while, due to the fact otherwise the vertical offsets of any shaders do not work correctly in the viewport (you can only see it correctly in Iray preview or render).

    However it does change things, and I remember switching it off again, although I don't recall all the reasons. I do remember that all the white primitives I used for lighting appear in black, instead of white in the view port, which I did not like, but there was other stuff as well, I think it was definitely more sluggish when moving around the scene.

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