bitmapdata.draw and stage3D

[Guest]

I have a script that uses a lot of complicated .draw calls with matrix transformation (scale and shift), displaying different parts of a big image (thousands by thousands px) in a kind of navigatior window.

Currently it's done in "old" AS3 for FP10. Is there a way to speed these calls up using GPU and stage3D in the new player FP11?

Can GPU help with that kind of image manupulation?

[Guest]

Anyone?

Are there any Adobe developers here who might know the answer?

[Guest]

Another bump... can not believe nobody knows this...

[Andrei1-bKoviI]

Yes, using Stage3D improves performance dramatically.

[Guest]

Good news, thank you!

Can anyone tell me what could be a Stage3D equivalent of this:

var img:BitmapData = .......

var rgn:Rectangle = ........

var scl:Number = ....

var matrix:Matrix = new flash.geom.Matrix();

rgn.x *= scl;

rgn.y *= scl;

rgn.width *= scl;

rgn.height *= scl;

matrix.scale(scl,scl);

matrix.tx = -rgn.left;

matrix.ty = -rgn.top;

var mapBD:BitmapData = new BitmapData(rgn.width,rgn.height,false,0x000000);

mapBD.draw(img,matrix,null,null,new Rectangle(0,0,rgn.width,rgn.height),true);

var mapLayer:Bitmap = new Bitmap(mapBD);

[Andrei1-bKoviI]

You need to use shaders or AGAL (which, essentially a runtime shader). There is no direct correlation between regular AS3 bitmapdata manipulations and Stage3D.

[Andrei1-bKoviI]

Here is an intro to AGAL and shaders:

http://www.adobe.com/devnet/flashplayer/articles/what-is-agal.html