NPAPI:AsyncDrawing: Difference between revisions

Plugins should create a Windows shared surface by calling <code>NPN_InitAsyncSurface</code> with a <code>NULL</code> value for <code>initData</code>. The resulting <code>NPAsyncSurface</code> will point to a <code>HANDLE</code> that can be used, for example, through [http://msdn.microsoft.com/en-us/library/bb173598%28v=VS.85%29.aspx OpenSharedResource] in order to create a texture for the user. In order to allow fast drawing to any hardware surfaces, the host will acquire the handle from [http://msdn.microsoft.com/en-us/library/bb174562%28v=VS.85%29.aspx IDXGISurface::GetSharedHandle]. This shared handle will represent a texture which is usable as a render target and is valid as a shader resource. The plugin can open this shared handle as a texture and then use it as a render target for any drawing operations.