Actionscript 3 :: Draw Transparent Graphics Onto Transparent BitmapData?

Feb 5, 2012

I'm trying to draw PNGs onto BitmapData that is transparent.

I create my BitmapData like this (using ARGB for the color):

new BitmapData(width, height, true, 0x00000000);

And clean it by using the same ARGB value:

bitmapData.fillRect(bitmapData.rect, 0x00000000);

When I use copyPixels() to draw graphics onto the cleaned BitmapData, I get this result:

If I don't use ARGB for the BitmapData color, it works fine:

But I have to specify a solid fillColor, meaning I can't render what's behind the Bitmap.

How can I make my BitmapData transparent, but not have the above occur?

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