If a framebuffer with an alpha component is requested via a GLCapabilities object
then an exception will always be thrown when trying to display the newly created
canavs: net.java.games.jogl.GLException: Error making context current
Has occured on two separate linux systems now, both of which will run Jogl demos
without an alpha framebuffer without complaint, and which will sucessfully create
an alpha framebuffer using LWJGL.