How to make OpenTK.GLControl Transparent

StackOverflow https://stackoverflow.com/questions/8936483

  •  30-10-2019
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Question

I am using WPF and OpenTk and I have a GLControl that is set to Transparent, the clear color is set to Transparent as well but when it draws the rectangle it becomes black. How do I make it so that it draws my rectangle on a transparent background, I have stuff behind the OpenTK.GLControl that I want to see along with the rectangle.

No correct solution

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