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I've set up a shader to render a fire/explosion looking material, which ended up quite good when rendering in the viewport. When I hit the render button it looks completely different and I am convinced it has something to do with the transparency, but I couldn't figure out what I'm doing wrong.

I've attached some screenshots to make it easier to understand what exactly is happening. Here is some additional information (if it makes any difference):

  • using Blender 2.78b
  • using Filmig Log Encoding Base color management
  • using a hair particle system which creates multiple transparency layers
  • using Cycles render engine
  • rendering on GPU

Thank you for all answers in advance!

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  • $\begingroup$ This is a known limitation of the render viewport. Most likely your image is fine, but the blender cannot display it. Read: blender.stackexchange.com/questions/42939/… and blender.stackexchange.com/questions/57816/… Evaluate your image using RGB display (Not RGBA): i.sstatic.net/rAoxU.png $\endgroup$
    – user1853
    Commented Sep 26, 2017 at 15:12
  • $\begingroup$ Thank you for your quick answer! You were right. When I'm using a black instead of a transparent background everything is fine. $\endgroup$
    – joshuaragex
    Commented Sep 26, 2017 at 15:18
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    $\begingroup$ If you use blender to composite this image on top of a background image you will have no problems. If you are intending to do the compositing in other software then avoid the PNG format, use OpenEXR instead. $\endgroup$
    – user1853
    Commented Sep 26, 2017 at 15:23

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