GLX_ARB_context_flush_control
https://www.khronos.org/registry/egl/specs/eglspec.1.5.pdf
GLX_ARB_context_flush_control

	GLX_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB 0
	GLX_CONTEXT_RELEASE_BEHAVIOR_ARB 0x2097
	GLX_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB 0x2098