Saving to PNG _with_ transparency using display.save() (case #6810)

Can you enable saving to PNG _with_ transparency? Currently you get black background instead.

Saving with transparency would be very useful (among other things) for baking effects. For example, you can write a sparkle effect with Corona very easily (much easier in fact than scripting in Illustrator or Processing), and then save individual frames of the effect to use in a sprite sheet. This would be a huge productivity feature!

Please look at this sample app: http://dl.dropbox.com/u/2776279/sparkles.7z

I’d be *super* excited if you added this. [import]uid: 52103 topic_id: 12262 reply_id: 312262[/import]

Bumping because i wanted this feature also.

Why not save the display object from framebuffer with alpha transparency? [import]uid: 55808 topic_id: 12262 reply_id: 73707[/import]