Support PNG alpha channels

please please please fix support for PNG transparency maps.
PNG + Alpha is a standard format for entourage, leaf maps etc

yes plz. this is quite annoying, though there is a way around it.

  • use the same png that contains the rgb in the opacity slot
  • use the alpha as grey radiobutton
  • insert a color correction map and invert the alpha (the invert button on the output section wont work)

yeah i mostly use some colour correction workaround but having this option would be really good.

Fixed in 1.2