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How to make lights work in Iray?

RaneRane Posts: 145
in Technical Help (nuts n bolts)

Seriously, I've been trying to add lights to my product for an Iray setup, and nothing works.

Comments

  • Richard HaseltineRichard Haseltine Posts: 100,784

    No lights added? No illumination from the lights? Have you turned off the dome (set Environment Mode to Scene Only in Render Settings) and adjusted the Tone Mapping settings? Have you set the lights to use Photometric Mode in the Lighting or Parameters panes and set their properties from that, rather than using the 3Delight Intensity slider?

  • RaneRane Posts: 145

    Lights added, spotlights to be precise.  No illumination from them.  I have turned off the dome settings and put it to scene.  Whats tone mapping?  Photometric mode in the lighting pane... Not sure.  And I know 3Delight intensity doesn't do squat in Iray.  

  • barbultbarbult Posts: 24,240

    @Rane, does your scene contain any skydome props? Those can block your lights.

  • RaneRane Posts: 145
    edited July 2016

    No.  No skydome, but I do have a skydome texture in for the environment dome, but its turned off entirely.

     

    EDIT:  Attached a screencap.

    Issue.jpg
    1280 x 1024 - 586K
    Post edited by Rane on
  • Richard HaseltineRichard Haseltine Posts: 100,784

    Looks like you are getting a bit of light on the pointy-out bits at the front. Tone Mapping is one of the groups in Render Settings.

  • RaneRane Posts: 145
    edited July 2016

    Those are Iray emissive lights.  By the bridge at the right of the rendered section are two more.  I'm trying to get the ship to be illuminated by the spotlights.

     

    EDIT:  So far, I've been using the default tone mapping settings.  I turned them all off and all of my lights went bonkers.

    Post edited by Rane on
  • barbultbarbult Posts: 24,240

    If you look through the spotlight to see what it is pointing at, do you see the spaceship? (Change your camera in the camera selection drop down from Perspective View to Spotlight 1.)

    Here are a few other observations. It looks like you changed Illumination from On to Diffuse Only. I don't know what effect that has. Try setting it back to the default state of On. Ray Opacity has been changed from 15% to 100%. I don't know what that will do either, so try setting it back to default 15%. Same with Beam Exponent; try returning it to the default 4.

    Another suggestion. Create a new camera for rendering, rather than rendering through the Perspective View. When you save your scene and reopen it, the Perspective View will not have retained your camera settings. A new camera that you create through Create>New Camera will save your camera settings. I also suggest turning off the headlamp for the camera in the Parameters pane. To see your scene while composing it, use the CTRL-L keyboard shortcut to turn on preview lighting.

     

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