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Thread: Strange dark reflections

  1. #11
    Join Date
    Dec 2017
    Posts
    285

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    And again the problem comes back in the same scene. In Camera 1 I fix objects by rotating them slightly - render is ok. Now client asked me to set new Camera 2 with slightly different angle and position - and all fixed objects was ruined - black parts are visible or in windows - strange artifacts. I needed to change their positions and rotations slightly again to fix them.
    Not very friendly.

    Geometry is fine, thick, transform matrix reset.

    We need to smash this bug once for ever.

    Best!
    Nik

  2. #12
    Join Date
    Nov 2017
    Posts
    261

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    Hi Nik,

    You say the workaround isn't working for you, by which I assume you mean disabling instancing? If this is not working then I'm not sure this is the same bug. It does look a bit different as well. Looks like one of your window surfaces is turning into a mirror?

    If you could send us this scene we can take a look.

    Thanks,
    Michael
    QA Engineer, Lightworks

  3. #13
    Join Date
    Dec 2017
    Posts
    285

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    There are no instances.
    Here is another example:
    Click image for larger version. 

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    It's really hard to work with this nasty bug. I have it in every scene where I have transparency.

    I will send you a scene (from this render), so you can see it.

    I didn't experience this bug from a long time, it came back in latest update.

    Edit: And it depends a lot of angle - object angle to camera. Rotating the object - will fix or will make it worse.

    Edit2: Rotating those 2 objects by 5 degrees - they renders fine now:
    Click image for larger version. 

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    Edit3:
    And this is from product camera - terrible result. There are no lights/objects that intersect the problematic glass.
    Click image for larger version. 

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    Even with different IBL's - reflection problems are the same as shape of black problems there.

    And here is with applied Ceramic material - reflections are perfect.
    Click image for larger version. 

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    What I think is - we have a BUG/PROBLEM with Transparency (glass objects) in current version of plugin. We need that fix ASAP.

    Edit4:
    Link to video - https://drive.google.com/open?id=19A...T3MSPgI1J27kxf

    Best!
    Nik
    Last edited by NikNastev; 10th February, 2020 at 10:09.

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