komelgman/nd2d — comment on commit 0f641ee2c9dbf173623c2796fdcd82101d9939d4
File:  line 0
By nulldesign:

Yes, you have to be really sure, that you won't run into a device loss. For example it's nearly impossible on iOS (As far as I know from developing...).

I don't think the bitmapData is leaking (but haven't tested it), when the texture isn't used anymore the bitmapData is disposed by the GC.