Immediately clears the back buffer and depth buffer of all drawing and fills it with the chosen clear color set by SetClearColor.
class procedure ClearScreen; static;
This does not effect what is seen on screen. This allows you to draw some things to the backbuffer, use TAgkImage.ScreenShot to get a screen shot, and then ClearScreen to draw something else.
For normal operation, you don't need (and should not) clear the screen yourself.
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