attilam Posted May 24, 2017 Share Posted May 24, 2017 Hello, newbie question: I'm trying to export some PNGs to be used for physically based rendering, where RGB is albedo information, and Alpha channel is smoothness (i.e. NOT transparency). The way I've tried is, creating a spare channel with the smoothness information, and I load it into Alpha before export. Affinity Photo seems to premultiply the Alpha though, so the exported image is basically ruined. This completely breaks the workflow. Is there a way to turn off Alpha premultiply? Or maybe an alternative way to export where RGB and A are kept intact in the same image? Thanks, Attila Quote Link to comment Share on other sites More sharing options...
Staff James Ritson Posted May 24, 2017 Staff Share Posted May 24, 2017 Hey Attila, does the software you're using support EXR files? If so, you should be able to use the EXR exporter as it exports straight alpha. Out of interest, what kind of workflow are you using? Is your material editing node-based? Hope that helps, James Quote Product Expert (Affinity Photo) & Product Expert Team Leader @JamesR_Affinity for tutorial sneak peeks and more Official Affinity Photo tutorials Link to comment Share on other sites More sharing options...
attilam Posted May 24, 2017 Author Share Posted May 24, 2017 Amplify Shader Editor in Unity. I'll try the EXR way later. For now I put together a quick PSD in photoshop with an alpha channel. Quote Link to comment Share on other sites More sharing options...
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