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HDR without effect ?

Discussion in 'Developer Preview Archive' started by Gaspedal, Dec 23, 2011.

  1. Gaspedal

    Gaspedal

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    I have enabled HDR in camera settings but I can't see an HDR effect. I get only low frames after enabling HDR. I have disabled DOF, Bloom and color correction but the same problem.
    Have I forgotten anything?
     
    Last edited: Dec 23, 2011
    Gaspedal, Dec 23, 2011
    #1

  2. aubergine

    aubergine

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    same here.
     
    aubergine, Dec 23, 2011
    #2

  3. Tim-C

    Tim-C

    Unity Technologies

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    All enabling HDR on the camera does is allow the use of a floating point render target. You need to add post processes to achieve tone mapping, bloom and other effects. So what you are doing is rendering to a more expensive buffer (hence the lower frame rates) but not using the extra precision / details. Please download the pro example project from the preview page and have a look at how the camera / game is set up there. Also make sure you read the documentation on HDR in unity.
     
    Last edited: Dec 23, 2011
    Tim-C, Dec 23, 2011
    #3

  4. maart

    maart

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    is the pro example project from the preview page the samme as the angry bots demo or am I missing something here?

    ..nevermind... got them
     
    Last edited: Dec 23, 2011
    maart, Dec 23, 2011
    #4

  5. Wolfos

    Wolfos

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    But what does HDR do? I can have tone mapping without enabling HDR and it works fine.
     
    Wolfos, Dec 23, 2011
    #5

  6. Cameron_SM

    Cameron_SM

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    This is why UT was hesitant to add HDR to unity for so long. HDR = High Dynamic Range. All it means is the scene is rendered in high precision color (higher than what your monitor can display). It does not mean the light will automatically shift/change/bloom/look-better in any way. In order to make use of the higher precision scene output you need to use post processing effects that are written specifically to take advantage of that.

    What it does do, in the case of tone-mapping, is provide much smoother lighting when you adjust the exposure constants because you're no longer skewing a 24bit color value of (255,255,255) possible values, you're now working with, I'm guessing ARGBHalf (haven't installed 3.5 yet, this could be wrong), which would be like a 48bit color range (4096, 4096, 4096) possible values?

    I probably have the number wrong, but that's the basic idea.
     
    Last edited: Dec 23, 2011
    Cameron_SM, Dec 23, 2011
    #6

  7. Pixelstudio_nl

    Pixelstudio_nl

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    HDR is a range not an "effect"
     
    Pixelstudio_nl, Dec 23, 2011
    #7