Air iOS Flash，StageQuality.LOW似乎不起作用

Question

I've read few articles about optimizing Flash performance on Air for iOS and many of them suggested to use StageQuality.LOW mode. But it seems Air(I'm using 3.6) doesn't allow you to use StageQuality.LOW, it must be either HIGH or BEST quality.

Am I missing something? Is there any way to turn it LOW quality mode?

Answer 1

In fact, there is a difference in performance. StageQuality the difference in rendering performance such as bitmaps or textfield. StageQuality Lower Not applying antialiasing vector graphics, bitmap graphics without does not draw smoothly. Higher quality settings produce better rendering of scaled bitmaps. also, higher quality settings are computationally more expensive. In particular, when rendering scaled video, using higher quality settings can reduce the frame rate.

What are you doing the work? If you use the BitmapData, recommend as follows.

AIR 3.3 later added a new featured drawing method called drawWithQuality , which allows you to draw assets at a quality that is independent from the stage quality setting used in your app.

In the past, the stage quality would have to be modified to change the quality of BitmapData.draw. BitmapData. drawWithQuality is an extension of BitmapData.draw that adds an optional parameter to specify the quality of vector rendering.

function drawWithQuality(source: IBitmapDrawable, matrix:Matrix=null, colorTransform: ColorTransform =null, blendMode:String=null, clipRect:Rectangle=null, smoothing:Boolean=false, quality:String=null): void

Following are the supported quality values:

• StageQuality.LOW
• StageQuality.MEDIUM
• StageQuality.BEST
• StageQuality.HIGH_8X8_LINEAR
• StageQuality.HIGH_16X16
• StageQuality.HIGH_16X16_LINEAR

Answer 2

It does work it just always shows up as HIGH in the AIR simulator. Will change on actual device. Bitmaps will smooth even in low quality in GPU mode as well.