BitmapData.setPixel() 1000x slower than Adobe Flash

[zahurdias]

Lightspark is 1000 times slower than Adobe Flash. The same code in lightspark is actually quicker using drawRect() than using setPixel()

see:

http://wonderfl.net/c/sGFo

and:

http://wonderfl.net/c/woTg

[Antti Ajanki (aajanki)]

Yes, this is currently horribly slow because the whole bitmap is copied on every setPixel() call; Bitmap::updatedData() copies the data into style.bitmap. The copy can be avoided if Bitmap and BitmapData share the same pixel array (which is the whole point of BitmapData class anyway).

[Antti Ajanki (aajanki)]

Excessive copying in is now fixed. The test SWF is still more than 10x slower than in Adobe due to general slowness of integer computations in Lightspark. I'll close this bug, because the specific problem with setPixel is resolved.