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High DPI leaves rendered image black -graphics not supported

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    High DPI leaves rendered image black -graphics not supported

    Hi there!

    I am struggling with this software that just seems that doesn't work for me at the moment. I have Revit 2017 installed on my Win 10 machine with 32 GB and NVIDIA Quadro K620 (it seems that my graphics card is not supported by Revit 2017). As there is not much information out there related to the behavior of Revit installed on a machine with an unsupported graphics card, I am basing a lot of my process on trial nd error. Since I am not able to access the screen Daylight Portal (as my Render Quality dialog does not offer me that section) I am basing my rendered result on high DPI and Quality Setting Best.

    Most of the times(but not always) when I set the rendering to 500 DPI or more, my rendered image shows up as all black except this small rectangular region that actually gets rendered.

    Is this behavior the result of an unsupported graphics card ? Also, is there any way to obtain good realistic renderings from Revit with a machine like mine or I have no other option than to switch Software or buy another Graphics Card?
    Attached Files
    Last edited by vladulau; March 8, 2017, 09:13 PM. Reason: Adding a photo

    #2
    I also have experienced rendering issues with a similar card, which required a support ticket to get answers (but no resolution) see here:
    https://www.revitforum.org/rendering...tml#post177874

    Based on the results of that ticket, I'm guessing the questions in your last paragraph will not have answers you like. You also forgot about Render to Cloud (that does not use your machine, but costs "cloud credits").
    Chris Ellersick

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      #3
      What if you render larger and shrink the image in post?
      Revit for newbies - A starting point for RFO


      chad
      BEER: Better, Efficient, Elegant, Repeatable.

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        #4
        It is a limitation with the graphics hardware itself - the rendering engine apparently has no software/CPU fallback and relies on the graphics card for processing. At some point in the rendering process, the card runs out of memory and the rendering engine never uses system memory, so errors are introduced.
        Chris Ellersick

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          #5
          Originally posted by cellersick View Post
          I also have experienced rendering issues with a similar card, which required a support ticket to get answers (but no resolution) see here:
          https://www.revitforum.org/rendering...tml#post177874

          Based on the results of that ticket, I'm guessing the questions in your last paragraph will not have answers you like. You also forgot about Render to Cloud (that does not use your machine, but costs "cloud credits").


          Thank you for your response cellersicka
          My graphics memory is 2GB (2048MB) and I did try to render by level option with a variety of values. The result is the same.

          I tried to render in cloud couple of times but the result is just horrible! Other than the fact that the texture looks very off, the general lighting looks also very fake and some types of materials are not shown at all(for example translucent of cut outs).

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