If asynchronous drawing is unavailable for any reason, the plugin falls back to using the existing synchronous drawing model.ĪsyncDrawing is supported in NPAPI Plugin on Windows desktop platforms only. It is not used in fullscreen mode, or in windowed mode where the plugin draws directly to its own window. This feature allows wmode “direct” (wmode opaque and transparent) to behave as “windowless” in hardware accelerated async drawing.
It is used only when the stage is composited with rest of the content in the browser window.
Async Drawing refers to the method that the browser and Flash Player use to exchange a bitmap surface where Flash Player draws the SWF content.