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Make Inset Camera Transparent

Discussion in 'Editor & General Support' started by marty, Apr 10, 2007.

  1. marty

    marty

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    How exactly do I make an inset camera (i.e. a second scene camera with its viewport rectangle and depth set so it appears on top of the main camera, like a HUD element) have a transparent background?
     
    marty, Apr 10, 2007
    #1

  2. Aras

    Aras

    Unity Technologies

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    Set it's Clear Flags to Depth Only or Don't Clear, depending on what you need (docs)
     
    Aras, Apr 10, 2007
    #2

  3. marty

    marty

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    There are two problems with that ...

    First, with those settings, I get no background color in the inset camera. I want to have the background color set for the camera showing, only transparently. The alpha setting in the System UI color dialog doesn't seem to work for Unity camera backgrounds.

    Also, if I use a imaging effects such as Glow or Color Ceorrection in Depth Only or Don't clear modes, transparency does not work at all. The entire inset camera rectangle is filled colored.
     
    marty, Apr 10, 2007
    #3

  4. Aras

    Aras

    Unity Technologies

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    If you want to do a "transparent clear", about the only way to do that directly is to use no clearing, and drawing a partly transparent plane that covers that camera and is behind any objects.

    Or render everything that camera would render into a Render Texture, using regular clear flags (and tweaking opacity of clear color), and then draw something with that Render Texture on screen.
     
    Aras, Apr 10, 2007
    #4