OSXOpenGL.txt

http://v002.info/forums/topic/texture-from-nsbitmapimagerep-to-syphonserver/

https://code.google.com/archive/p/cogewebkit/

https://github.com/irlabs/TransparentWebView

https://github.com/DouglasHeriot/syphon-implementations/tree/master/Syphon%20Implementations/SyphonScreenCapture

https://developer.apple.com/reference/appkit/nsview

https://developer.apple.com/reference/appkit/nsview/1483440-bitmapimagerepforcachingdisplayi?language=objc

https://developer.apple.com/reference/appkit/nsview/1483552-cachedisplayinrect?language=objc

https://developer.apple.com/reference/appkit/nsbitmapimagerep

https://developer.apple.com/reference/appkit/nsbitmapimagerep/1395550-initwithfocusedviewrect

http://stackoverflow.com/questions/24727499/wkwebview-screenshots

https://github.com/lemonmojo/WKWebView-Screenshot

https://bugs.webkit.org/show_bug.cgi?id=161450
No reliable way to get a snapshot of WKWebView (macOS)

The cocoa API -[NSView cacheDisplayInRect:(NSRect)rect
toBitmapImageRep:(NSBitmapImageRep *)bitmapImageRep] does not work for
WKWebView, it only returns an empty image. We need a way to get the
visible contents of the web page on macOS. The UI is rendered in a
separate process, there should be an API to grab the visible bitmap
from the UI process and expose it as a method on WKWebView that the
embedding application can consume. We need to be able to grab the web
page contents regardless if the WKWebView is hidden or overlapped by
other views, CGWindowListCreateImage will not work for that scenario.

For iOS, you can use the -[UIView drawViewHierarchyInRect:(CGRect)rect
afterScreenUpdates:(BOOL)afterUpdates] API to get the web page
contents.

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WkWebKit uses a remote CALayer

http://stackoverflow.com/questions/9293409/can-caremotelayerserver-and-caremotelayerclient-be-used-between-processes
CARemoteLayerServer
CARemoteLayerClient

https://github.com/krevis/RemoteLayerDemo

https://oleb.net/blog/2012/10/remote-view-controllers-in-ios-6/

http://stackoverflow.com/questions/24727499/wkwebview-screenshots

https://developer.apple.com/reference/uikit/uiview/1622531-snapshotviewafterscreenupdates