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Setting up reflections pre-render?

ScavengerScavenger Posts: 2,674
in The Commons

I'm working on a piece where a bunch of the action is happening in the reflection of a mirror.

Is there a way to get something resembling the reflection view in the Viewport (either a simulated reflection or using a camera) so you can see it live for positioning, rather than render, fix, render, fix?

 

In thinking on it, so far, best Idea I can come up with is to set up the main camera pointing at the mirror,render,  then set up a 2nd camera in the mirror's position and try to match the render in the view, and then use that camera for the set up.

 

Anyone have a better way?

Comments

  • Richard HaseltineRichard Haseltine Posts: 108,067

    Use the AuxViewport, with 3Delight's IPR or the Nvidia IRay preview mode depending on which way you will render. I think that gives reflections.

  • j cadej cade Posts: 2,310

    Render engine?

  • TheKDTheKD Posts: 2,711
    edited January 2016

    Don't let IPR mode fool you. It seems so slow at first, but once it starts going, it's very quick to update after that for me. I only got a gtx 960 too, not exactly top of the line. I use it extensively when I am tuning my lights and ISO and all that jazz. Well, if you are in iray at least, I have no clue about 3delight.

    Oh, one other thing, not sure if you know about it, but you can open up a floating auxillery window, keep it tiny, and use that for preview renders if set to iray mode as well. Neat trick I recently came across, super fast.
     

    Post edited by TheKD on
  • HavosHavos Posts: 5,581
    edited January 2016

    I believe IPR is 3DL (IPR is not how iRay shows previews although the inactive button of that name still sits there in the aux viewport), however your comment is true for both renderers

    Post edited by Havos on
  • j cadej cade Posts: 2,310

    And whichever engine, the key is to hide unnecesary things to speed up the rendering. you could even place primatives in the locations you need to be seen in the reflection and then hide everything else (and then use the aux viewport)

  • TheKDTheKD Posts: 2,711
    edited January 2016

    This is how you get to iray IPR in an aux window. I usually grab the aux window tab and drag it into a loafting one though, and make it just big enough to see what I need.

    1.jpg
    672 x 858 - 214K
    2.jpg
    575 x 855 - 202K
    Post edited by TheKD on
  • ScavengerScavenger Posts: 2,674

    Thanks.. I've never tried IPR (I thought it was an Iray only thing and I don't have iray gpu enabled so never messed with it on that side)...trying the 3dl now.

  • HavosHavos Posts: 5,581
    edited January 2016

    IPR is 3DL (the button is grayed out when iRay is selected), NVidia Iray on the DrawStyle drop down list is for iRay equivalent. I am being pedantic about naming, because they really both do the same thing

    Post edited by Havos on
  • ScavengerScavenger Posts: 2,674

    I have found that despite that, my intiial idea of a camera in the mirror wound up being the easiest method, two views, 2 cameras

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