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Fixed bug 2101 - CWBackPixel causes weird window flickering on window…
… resize aBothe I tried to experiment a bit with SDL2 and OpenGL today and noticed that something caused some weird flickering when resizing my nicely drawn SDL2/OpenGL window: Just after resizing, the background went black and I had to let my OpenGL code redraw the contents.. However, after some hours spent with googling I found out that in OpenGL examples where this CWBackPixel flag was not used when creating X windows, there was no flickering while resizing the window. See http://www.sbin.org/doc/Xlib/chapt_04.html @ "The Window Background" for more info.
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