WGL_ARB_context_flush_control
https://www.khronos.org/registry/OpenGL/extensions/ARB/WGL_ARB_context_flush_control.txt
WGL_ARB_context_flush_control

	WGL_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB 0
	WGL_CONTEXT_RELEASE_BEHAVIOR_ARB 0x2097
	WGL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB 0x2098