Request: Allow OpenKneeboard to insert itself as a page in built-in DCS kneeboard. about openkneeboard HOT 1 CLOSED

Not really, sorry; inserting text or graphics a few times a second is relatively straightforward, but pen strokes need a much faster draw rate to be usable.

Something like the radio log/message history is doable by appending the text or swapping out an image, but swapping out an image at the rate needed for usable pen strokes needs a lot of CPU, and the RAM < - > GPU copies destroys frame rate.

When I last posted about OpenKneeboard, it basically worked like this - but adding graphics support basically required rewriting the graphics handling to eliminate RAM < - > GPU copies for the pen strokes in openkneeboard to feel usable. It cut GPU usage by ~ 15x and CPU by ~ 100x when rendering pen strokes at 30fps. This wasn’t an issue previously as without pen strokes, openkneeboard only needed to update 5 times a second tops if you are super agro with the next page binding - it still normally sits at zero FPS if you’re not actively doing anything with it

What would be possible is faking it, without adding pages: keep track of when the kneeboard is visible, what page is displaying, where on the screen it is, and drawing on top of it. I don’t plan to add that as the amount of a shareable code would be pretty minimal - it would be much better done as a different app

from openkneeboard.