GraphicsDevice.GetBackBufferData is sloooow

[BlizzCrafter]

It’s possible to make the GL.ReadPixels (GraphicsDevice.GetBackBufferData) call faster by using PBO’s (PixelBufferObjects).

I roughly described that in this post:

MonoGame.Forms - Create your Editor Environment!

So, I finally had time to take a deeper look at the OpenGL support and I want to share my experience and findings with this post -> related to the MonoGame.Forms feature set. The difference from the GitHub example from @SpiceyWolf and the MonoGame.Forms library is, that MonoGame.Forms doesn’t use the Game class as well as it does not make use of the GraphicsDeviceManager from the MonoGame.Framework, because originally I had the vision of communicating with the MonoGame.Framwork from out of cust…

Here is the technical description:

OpenGL Pixel Buffer Object (PBO)

However we need to implement some missing things in the MonoGame.Framework first like the GL_PIXEL_UNPACK_BUFFER buffer target.

---

To get around the performance issue in your current solution you could work with intervalls.