Thu May 10, 2018 4:43 am
PNGs are typically not premultiplied (straight alpha), but unlike most software, Fusion doesn't automatically premultiply them for you upon import. It is frequently necessary to place an AlphaMultiply node immediately after the Loader/MediaIn.
I'm not sure if Fusion in Resolve handles PNG the same way that Fusion standalone does, but the AlphaMultiply is an easy solution to try.
If that doesn't work, can you share the PNG you're having trouble with? I haven't been able to reproduce your problem with any of the random PNGs I tried.
Bryan Ray
http://www.bryanray.name
http://www.sidefx.com