How to avoid tearing on large bitmap?

#1

So i have a large bitmap i redraw evey frame, and its causing some pretty bad tearing even with vsync on.
Any ideas what can be done to avoid this? Win / Cpp target

setup:

texture = Lib.current.stage.stage3Ds[0].context3D.createRectangleTexture(theWidth, theHeight, BGRA, true);
bitmap.bitmapData = BitmapData.fromTexture(texture);

renderloop:

NativeArray.setUnmanagedData(bufferMem, getPixelData(), frameSize);
texture.uploadFromByteArray( Bytes.ofData(cast(bufferMem)), 0 );
#2

Do you know if this occurs with ordinary BitmapData in OpenFL, outside Stage3D?

#3

Hmm… do you mean when blitting pixels directly to the bitmap? Is the performance is good enough to do that for a full screen bitmap?

#4

Well, it may help to determine if this is specific to Stage3D texture uploads, or if it applies in general to rendering with a large bitmap in the standard OpenFL renderer