I have drawn a 45 bit circle with the setPixel() method and aligned a number of them to draw a diagonal line on a bitmap.
The result is fine when testing but when I test in HTML the line is jagged.
Zooming in and out again improves smoothing so I added to scale the bitmap at the end of my code.
myBitmap.scaleX = myBitmap.scaleY = .99;
This works. I think this is forcing the hardware acceleration but I would like a proper and more efficient method.