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Thread: worng material and texture setting will become to super large size .max file

  1. #1
    Join Date
    Jul 2018
    Posts
    11

    Default worng material and texture setting will become to super large size .max file

    Hello every one!

    It's confuse me for a long time.
    If I make the wrong procedure, .max file will become to huge file size, sometime it's more than hundredfold.

    In this case, I've made a teapot in max 2020 and iray 2.2 and give it a default iray material and bitmap texture, then save it,
    the file size is 980KB in MAX 2020 .

    If I change a RGB level value in Bitmap setting,
    and put Iray+ colour correction between Bitmap and iray material,
    then change any value in Iray+ colour correction,
    in max 2019 with iray 2.0.1, .max file will be 87MB,
    in max 2020 with iray 2.2, .max file will be 19MB.

    It's just a simple test scene, in my work file, 10MB file will become to 500MB-1GB.
    Finally I've found the procedure to recrate this situation again and report it.

    Sorry for my poor english.

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  2. #2
    Join Date
    Nov 2017
    Posts
    259

    Default

    Hi cuanyo,

    This is ultimately a side-effect of how the Iray+ Colour Correction map works unfortunately. When you plug a bitmap into it, it will create a copy of this bitmap in memory, which will be a 32-bit uncompressed image. This is then getting embedded into the .max file when you save it.

    There isn't a workaround for this at the moment, but I have raised a case to look at this as we don't really need to be saving that image as we can recreate it when the file is loaded, and if you make extensive use of this map then it will greatly increase the size of your files as you are seeing.

    Thanks for raising this,
    Michael
    QA Engineer, Lightworks

  3. #3
    Join Date
    Dec 2019
    Posts
    1

    Default

    It is need to optimize setting

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