AnsweredAssumed Answered

Glass color lost when rendered as transparent PNG

Question asked by Luke Thompson on May 14, 2020
Latest reply on May 15, 2020 by Jonathan Walp

I'm trying to develop a rendering that will be used on a website and I need it to be a transparent PNG file. The object i'm rendering is a sheet of glass using the "glass" appearance type, with a transparent grayscale gradient overlayed on front. My glass has a sightly blue tint to it in the glass appearance.


When I setup my scene using a white plate to ensure all the colors are correct, and then I got to save as a PNG with alpha channel, my blue tint doesn't render out. The gradient shows just fine though. Of course I have to add a white backdrop to see anything. 


I'm scratching my head on this one. Thoughts? 


Preview in Visualize with a white plate. There is a transparent gradient decal on the glass:


This is what I see rendered with the white plate. There is a slight gradient. This is correct:


This the rendered PNG with a white background added in post processing. Notice the blue tint is gone but the gradient remains: