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Thread: Precalc irr maps in VRay

  1. #1
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    Jorge Ledezma
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    Default Precalc irr maps in VRay

    I'm rendering an animation using VRay. I previously did a precalculation and stored the irradiance map. I've been fine tunning some materials, specular reflections, dimming maps, color adjustments. These are all small changes and every time I render it loads the stored irradiance map.

    Here comes the problem, I don't know why but suddenly, even the map is loaded VRay now goes all the way thru 4 prepasses. The last change I did was a material changed from Standard with a VRay map for reflection to a Vray Material. Since I saved the previous material I returned to that one but VRay is still doing all GI calculations again.

    Any clue?

  2. #2
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    Kalle Eliasson
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    Default Re: Precalc irr maps in VRay

    dont know... are you sure its calculating GI? maybe its just calculating reflectionmaps... this happens when you use interpolation in your glossy reflections.

    if not, then I have no clue...

  3. #3
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    Tony Richardson
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    Default Re: Precalc irr maps in VRay

    Yep. Kalle nailed it! Interpolation on your glossy reflections.

  4. #4
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    Default Re: Precalc irr maps in VRay

    That's right I added interpolation. Can this be included on precalc or is this something that needs to be calculated frame by frame? mmm... I guess not... I think I'll need to avoid this then

  5. #5
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    Default Re: Precalc irr maps in VRay

    interpolation can save some time, but can also produce some ugly blurred reflections... if you can, I think you should avoid them.

    you should read the latest tutorials on animations over at chaoticdimension... I think you can use the lightmap for calculating glossy relflections somehow.. havent tried it myself yet, but its supposed to be pretty fast.

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