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Channel format in .exr file

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  • Channel format in .exr file

    Hello,

    When saving render to .exr file we get these channels (FLOAT - float32 format, HALF - float16 format):

    {'A': HALF, 'B': HALF, 'G': HALF, 'R': HALF, 'Z': HALF,​​
    'Background.B': HALF, 'Background.G': HALF, 'Background.R': HALF,
    'Bumped Normals.X': FLOAT, 'Bumped Normals.Y': FLOAT, 'Bumped Normals.Z': FLOAT,
    'Self-Illumination.B': HALF, 'Self-Illumination.G': HALF, 'Self-Illumination.R': HALF,
    'Velocity.X': FLOAT, 'Velocity.Y': FLOAT}

    My questions are:
    1. Is it possible to change format of some channels in .exr file? For example, we would like to change Z channel to float32 instead of float16 because float16 is too inaccurate for depth
    2. Do you plan to add configuration of render elements so we can choose which render elements are added to .exr file?

  • #2
    1) No, changing the format is not possible.
    2) This is already implemented and will be part of the next major update.
    Nikola Goranov
    Chaos Developer

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    • #3
      Thank you,
      Do you plan to support float32 depth or it will be fixed at float16?

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      • #4
        We haven't considered it so far. We'll see.
        Nikola Goranov
        Chaos Developer

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