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RGB merge for export help
Hi Substance experts, I'm trying to pack separate greyscale channels into a single RGB or RGBA texture for export and use in UE4, but I've run into a little problem. I won't always have an emissive input to pack into the alpha channel depending on which asset is pumped through. Using the default RGBA Merge node, it won't… -
Re: RGB merge for export help
Hi Jerc, OK I'm a step closer. What you said makes sense, so thanks! Right now I have my maps exporting properly, but they all all come with alpha channels by default when I export with the "Export outputs as bitmaps" option on the substance graph. Is there a way to make my graph or outputs smarter so they only export 3… -
Re: RGB merge for export help
Unfortunately there is currently no way to export bitmaps without an alpha channel unless you use a format that doesn't support it, like bmp. It's on our short term task list. -
Re: RGB merge for export help
Great, thanks again! -
Re: RGB merge for export help
Actually you have an output right there, it's just transparent because the default alpha, like all greyscale input in SD, is black if nothing is plugged in it. You could modify the RGBA Merge node to add a switch for the alpha or make a second node that would be a simple RGB merge without the alpha channel.
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