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Rendering Black (color) and Semi-Transparent objects

AaronDAaronD ✭
in Questions And Answers

Looking at some of the tutorials, it appears that anything which is black-colored ( rgb 0,0,0) will be rendered as transparent.
As a result, I had two questions:
1) Is there a way to render something truly black in color, or is the workaround to use an off-black color (ex: rgb 0,0,1)
2) How can semi-transparent objects be rendered? Is this as simple as modifying the opacity in the renderer or does something special have to be done?

Answers

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    PatrickPatrick mod

    HoloLens adds light to the scene. 'true' black isn't really possible, but our brains do a pretty good job of filling in where there should be black so long as enough other visual cues are around.

    Since HoloLens doesn't remove light from the scene, all holograms will, to an extent, be 'semi transparent'. Again, our brains do a pretty good job of filtering out how we should see our world with holograms. The 'brighter' your holograms the less transparent they will appear.

    You should check out the 'Color design' documentation.

    ===
    This post provided as-is with no warranties and confers no rights. Using information provided is done at own risk.

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    glassmanglassman ✭

    What is the difference between RGB 000, vs, RGB 1,1,1?
    Does it transit from transparent to black? I watched the Volvo safety video, there was a lot of black background, was that from the room wall? It was under my impression that it was from the hololens.

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    AmerAmerAmerAmer ✭✭✭

    Don't judge your results by the video's provided by Microsoft. This goes especially for commercials and product videos. They use a variation of the spectator mode to render the holograms onto the video in a post production scenario. The colors and resolution may not match what you're making.

    http://www.redsprocketstudio.com/
    Developer | Check out my new project blog

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    glassmanglassman ✭

    Are you saying there is projection video on the background?

    @AmerAmer said:
    Don't judge your results by the video's provided by Microsoft. This goes especially for commercials and product videos. They use a variation of the spectator mode to render the holograms onto the video in a post production scenario. The colors and resolution may not match what you're making.

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    AmerAmerAmerAmer ✭✭✭
    edited March 2017
    No, rendering for the commercial is not done by the HoloLens. It's done with unity and post effects applied to enhance color. Unity can render black but the HoloLens can't. I've seen where companies use black walls when demonstrating their apps. This really helps if you need black or need the color to pop.

    http://www.redsprocketstudio.com/
    Developer | Check out my new project blog

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