How does Irrlicht present the images to the window? (WINAPI)

[Mel]

I try to figure out what Irr does to present the images to the window client (this is a WINAPI question), but i don't ever get to step on a "RedrawWindow" or an "InvalidateRect" And I am wondering which approach would be faster. The idea is to cause a window redraw in an application, but for now, i can't find which would be the fastest way.

[CuteAlien]

No idea if it's the fastest/best way, but it seems Irrlicht uses the code in CIrrDeviceWin32::present

[Mel]

But when is it called? It just copies an image generated within the engine independently of where, and pops it into the client area. The point is that it doesn't happen constantly, only when needed, and i'm curious as to how it happens. Perhaps the redrawing happens when some other event is managed? or... ? dunno, Windows programming isn't my strong point. I just don't feel very comfortable with RedrawWindow... seems like a forced solution

[CuteAlien]

CIrrDeviceWin32 is derived from video::IImagePresenter (which only has this present function). The only drivers needing this are the software drivers (as other drivers use opengl/directx to write and back-buffer and then flip it with front-buffer). The software drivers use it inside endScene.

Btw, I'm quite glad you asked that stuff, because I also didn't know about this before :-)

[Mel]

It is what messing with Vulkan has XD They have their own swapchain engine, but it won't update the window for some reason (yet the swapchain works as expected...), thus, you need to refresh it manually. But i think it is very naively programmed, because slows down the whole thing a lot, so, i ask for the fastest way to tell a window to update. After seeing some things, i think it is more worth to try and create my own presenting routine than relying on Vulkan one. Or perhaps i am doing something completely wrong, who knows. Or to take a peek at the VK swapchain extension myself for some "enlightenment".