Loads two different images: - the 1st is the RGB channels - the 2nd is interpreted as greyscale and fetch in the alpha channel of the result. The returned OwnedImage!RGBA should be destroyed with destroyFree.
ImageIOException on error.
See Implementation
Loads two different images: - the 1st is the RGB channels - the 2nd is interpreted as greyscale and fetch in the alpha channel of the result. The returned OwnedImage!RGBA should be destroyed with destroyFree.