X11: Fix unavailable GLX (Server): Use fallback GraphicsConfigurationFactory (X11GLX -> X11)

- GraphicsConfigurationFactory.registerFactory(..) returns previous mapped GraphicsConfigurationFactory.
  This allows daisy chaining of GraphicsConfigurationFactory, in case one is not suitable.

- X11GLXGraphicsConfigurationFactory:
  - Store the previously mapped factory as fallback
  - choose*Impl(): If GLX is not available, use fallback

1 files changed, 2 insertions, 2 deletions

diff --git a/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXDrawableFactory.java b/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXDrawableFactory.java
index 2ba067b02..55d0e9400 100644
--- a/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXDrawableFactory.java
+++ b/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXDrawableFactory.java
@@ -220,8 +220,8 @@ public class X11GLXDrawableFactory extends GLDrawableFactoryImpl {
                     //                       NativeWindowFactory.getNullToolkitLock(), true); // own non-shared display connection, no locking
             sharedDevice.lock();
             try {
-                if(!GLXUtil.isGLXAvailable(sharedDevice.getHandle())) {
-                    throw new GLException("GLX not available on device: "+sharedDevice);
+                if(!GLXUtil.isGLXAvailableOnServer(sharedDevice)) {
+                    throw new GLException("GLX not available on device/server: "+sharedDevice);
                 }
                 GLXUtil.initGLXClientDataSingleton(sharedDevice);                
                 final String glXServerVendorName = GLX.glXQueryServerString(sharedDevice.getHandle(), 0, GLX.GLX_VENDOR);