2 files changed, 18 insertions, 6 deletions
diff --git a/src/jogl/classes/javax/media/opengl/GLContext.java b/src/jogl/classes/javax/media/opengl/GLContext.java
index d26076344..f303c5b1c 100644
--- a/src/jogl/classes/javax/media/opengl/GLContext.java
+++ b/src/jogl/classes/javax/media/opengl/GLContext.java
@@ -176,7 +176,6 @@ public abstract class GLContext {
   protected VersionNumber ctxGLSLVersion;
   private int currentSwapInterval;
   protected GLRendererQuirks glRendererQuirks;
-  private static final VersionNumberString nullVersion = new VersionNumberString(-1, -1, -1, "n/a");
 
   /** Did the drawable association changed ? see {@link GLRendererQuirks#NoSetSwapIntervalPostRetarget} */ 
   protected boolean drawableRetargeted; 
@@ -186,8 +185,8 @@ public abstract class GLContext {
         System.err.println(getThreadName() + ": GLContext.resetStates()");
         // Thread.dumpStack();
       }
-      ctxVersion = nullVersion;
-      ctxVendorVersion = nullVersion;
+      ctxVersion = VersionNumberString.zeroVersion;
+      ctxVendorVersion = VersionNumberString.zeroVersion;
       ctxOptions=0;
       ctxVersionString=null;
       ctxGLSLVersion=null;
@@ -668,6 +667,16 @@ public abstract class GLContext {
    * @see #getGLSLVersionNumber() 
    **/
   public final VersionNumber getGLVersionNumber() { return ctxVersion; }
+  /** 
+   * Returns the vendor's version, i.e. version number at the end of <code>GL_VERSION</code> not being the GL version.
+   * <p>
+   * In case no such version exists within <code>GL_VERSION</code>, 
+   * the {@link VersionNumberString#zeroVersion zero version} instance is being returned.
+   * </p> 
+   * <p>
+   * The vendor's version is usually the vendor's OpenGL driver version.
+   * </p>
+   */
   public final VersionNumberString getGLVendorVersionNumber() { return ctxVendorVersion; }
   public final boolean isGLCompatibilityProfile() { return ( 0 != ( CTX_PROFILE_COMPAT & ctxOptions ) ); }
   public final boolean isGLCoreProfile()          { return ( 0 != ( CTX_PROFILE_CORE   & ctxOptions ) ); }
diff --git a/src/jogl/classes/javax/media/opengl/GLDrawableFactory.java b/src/jogl/classes/javax/media/opengl/GLDrawableFactory.java
index 9feb54a46..dbf6df0de 100644
--- a/src/jogl/classes/javax/media/opengl/GLDrawableFactory.java
+++ b/src/jogl/classes/javax/media/opengl/GLDrawableFactory.java
@@ -285,7 +285,7 @@ public abstract class GLDrawableFactory {
       if(null==device) {
           device = getDefaultDevice();
           if(null==device) {
-              throw new InternalError("no default device");
+              throw new InternalError("no default device available");
           }
           if (GLProfile.DEBUG) {
               System.err.println("Info: "+getClass().getSimpleName()+".validateDevice: using default device : "+device);
@@ -322,7 +322,10 @@ public abstract class GLDrawableFactory {
    * @param device which {@link javax.media.nativewindow.AbstractGraphicsDevice#getConnection() connection} denotes the shared the target device, may be <code>null</code> for the platform's default device.
    * @return true if a shared resource could been created, otherwise false. 
    */
-  protected abstract boolean createSharedResource(AbstractGraphicsDevice device);
+  protected final boolean createSharedResource(AbstractGraphicsDevice device) {
+      return createSharedResourceImpl(device);
+  }  
+  protected abstract boolean createSharedResourceImpl(AbstractGraphicsDevice device);
   
   /**
    * Returns true if the <code>quirk</code> exist in the shared resource's context {@link GLRendererQuirks}.
@@ -419,7 +422,7 @@ public abstract class GLDrawableFactory {
   public final List<GLCapabilitiesImmutable> getAvailableCapabilities(AbstractGraphicsDevice device) {
       device = validateDevice(device);
       if(null!=device) {
-        return getAvailableCapabilitiesImpl(device);
+          return getAvailableCapabilitiesImpl(device);
       }
       return null;
   }