GLContextImpl: Move sharedContextHandle check to makeCurrentWithinLock(..) and let it fail there instead of within impl. class, only pass the handle - simplifies and removes redundancy.

9 files changed, 58 insertions, 93 deletions

diff --git a/make/scripts/tests.sh b/make/scripts/tests.sh
index a93c2ed79..6fbba6adf 100644
--- a/make/scripts/tests.sh
+++ b/make/scripts/tests.sh
@@ -136,7 +136,7 @@ function jrun() {
     #D_ARGS="-Djogl.debug.DebugGL -Djogl.debug.TraceGL -Djogl.debug.GLContext.TraceSwitch -Djogl.debug=all"
     #D_ARGS="-Djogamp.debug.IOUtil -Djogl.debug.GLSLCode -Djogl.debug.GLMediaPlayer"
     #D_ARGS="-Djogl.debug.GLMediaPlayer -Djogl.debug.AudioSink"
-    D_ARGS="-Djogl.debug.GLMediaPlayer -Djogl.debug.GLMediaPlayer.Native"
+    #D_ARGS="-Djogl.debug.GLMediaPlayer -Djogl.debug.GLMediaPlayer.Native"
     #D_ARGS="-Djogl.debug.GLMediaPlayer"
     #D_ARGS="-Djogl.debug.GLMediaPlayer.StreamWorker.delay=25 -Djogl.debug.GLMediaPlayer"
     #D_ARGS="-Djogl.debug.GLMediaPlayer.Native"
@@ -304,6 +304,7 @@ function testawtswt() {
 #testawt com.jogamp.opengl.test.junit.jogl.demos.es2.awt.TestGearsES2AWT $*
 #testawt com.jogamp.opengl.test.junit.jogl.demos.es2.awt.TestGearsES2GLJPanelAWT $*
 #testawt com.jogamp.opengl.test.junit.jogl.demos.es2.awt.TestGearsES2GLJPanelsAWT $*
+#testawt com.jogamp.opengl.test.junit.jogl.demos.es2.awt.DemoGLJPanelGridAWT $*
 #testawt com.jogamp.opengl.test.junit.jogl.demos.es2.newt.TestGearsES2NewtCanvasAWT $*
 #testawt com.jogamp.opengl.test.junit.jogl.demos.es2.newt.TestLandscapeES2NewtCanvasAWT $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.demos.es2.newt.TestGearsES2NEWT $*
@@ -328,7 +329,7 @@ function testawtswt() {
 # av demos
 #
 #testnoawt jogamp.opengl.openal.av.ALDummyUsage $*
-testnoawt com.jogamp.opengl.test.junit.jogl.demos.es2.av.MovieCube $*
+#testnoawt com.jogamp.opengl.test.junit.jogl.demos.es2.av.MovieCube $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.demos.es2.av.MovieSimple $*
 
 #
@@ -384,7 +385,7 @@ testnoawt com.jogamp.opengl.test.junit.jogl.demos.es2.av.MovieCube $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextVBOES2NEWT0 $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextVBOES2NEWT1 $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextVBOES2NEWT2 $*
-#testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextVBOES2NEWT3 $*
+testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextVBOES2NEWT3 $*
 #testawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextVBOES2AWT3 $*
 #testawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextVBOES2AWT3b $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextVBOES2SWT3 $*
diff --git a/src/jogl/classes/jogamp/opengl/GLContextImpl.java b/src/jogl/classes/jogamp/opengl/GLContextImpl.java
index 3f6eb01a0..d43da2c3e 100644
--- a/src/jogl/classes/jogamp/opengl/GLContextImpl.java
+++ b/src/jogl/classes/jogamp/opengl/GLContextImpl.java
@@ -648,16 +648,19 @@ public abstract class GLContextImpl extends GLContext {
         }
 
         final GLContextImpl shareWith = (GLContextImpl) GLContextShareSet.getCreatedShare(this);
+        final long shareWithHandle;
         if (null != shareWith) {
             shareWith.getDrawableImpl().lockSurface();
-            // FIXME:
-            // Contemplate whether we shall 'fail' creating this context
-            // if 0==shareWith.getHandle(), since at this point
-            // both context are locked and current values are available.
+            shareWithHandle = shareWith.getHandle();
+            if (0 == shareWithHandle) {
+                throw new GLException("GLContextShareSet returned an invalid OpenGL context: "+this);
+            }
+        } else {
+            shareWithHandle = 0;
         }
         final boolean created;
         try {
-            created = createImpl(shareWith); // may throws exception if fails!
+            created = createImpl(shareWithHandle); // may throws exception if fails
             if( created && hasNoDefaultVAO() ) {
                 final int[] tmp = new int[1];
                 final GL3ES3 gl3es3 = gl.getRootGL().getGL3ES3();
@@ -748,13 +751,13 @@ public abstract class GLContextImpl extends GLContext {
    * @return the valid and current context if successful, or null
    * @throws GLException
    */
-  protected abstract boolean createImpl(GLContextImpl sharedWith) throws GLException ;
+  protected abstract boolean createImpl(long sharedWithHandle) throws GLException ;
 
   /**
    * Platform dependent but harmonized implementation of the <code>ARB_create_context</code>
    * mechanism to create a context.<br>
    *
-   * This method is called from {@link #createContextARB}, {@link #createImpl(GLContextImpl)} .. {@link #makeCurrent()} .<br>
+   * This method is called from {@link #createContextARB}, {@link #createImpl(long)} .. {@link #makeCurrent()} .<br>
    *
    * The implementation shall verify this context with a
    * <code>MakeContextCurrent</code> call.<br>
diff --git a/src/jogl/classes/jogamp/opengl/egl/EGLContext.java b/src/jogl/classes/jogamp/opengl/egl/EGLContext.java
index 2eb277f3f..903a4c461 100644
--- a/src/jogl/classes/jogamp/opengl/egl/EGLContext.java
+++ b/src/jogl/classes/jogamp/opengl/egl/EGLContext.java
@@ -155,12 +155,12 @@ public class EGLContext extends GLContextImpl {
     }
 
     @Override
-    protected boolean createImpl(GLContextImpl shareWith) throws GLException {
+    protected boolean createImpl(final long shareWithHandle) throws GLException {
         final EGLGraphicsConfiguration config = (EGLGraphicsConfiguration) drawable.getNativeSurface().getGraphicsConfiguration();
         final long eglDisplay = config.getScreen().getDevice().getHandle();
         final GLProfile glProfile = drawable.getGLProfile();
         final long eglConfig = config.getNativeConfig();
-        long shareWithHandle = EGL.EGL_NO_CONTEXT;
+        // 0 == EGL.EGL_NO_CONTEXT;
 
         if ( 0 == eglDisplay ) {
             throw new GLException("Error: attempted to create an OpenGL context without a display connection");
@@ -180,13 +180,6 @@ public class EGLContext extends GLContextImpl {
             }
         }
 
-        if (shareWith != null) {
-            shareWithHandle = shareWith.getHandle();
-            if (shareWithHandle == 0) {
-                throw new GLException("GLContextShareSet returned an invalid OpenGL context");
-            }
-        }
-
         final IntBuffer contextAttrsNIO;
         final int contextVersionReq, contextVersionAttr;
         {
diff --git a/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXCGLContext.java b/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXCGLContext.java
index 037aaca08..0d231b89d 100644
--- a/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXCGLContext.java
+++ b/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXCGLContext.java
@@ -286,35 +286,19 @@ public class MacOSXCGLContext extends GLContextImpl
     return false;
   }
 
-  protected long createImplPreset(GLContextImpl shareWith) throws GLException {
-    long share = 0;
-    if (shareWith != null) {
-      // Change our OpenGL mode to match that of any share context before we create ourselves
-      setOpenGLMode(((MacOSXCGLContext)shareWith).getOpenGLMode());
-      share = shareWith.getHandle();
-      if (share == 0) {
-        throw new GLException("GLContextShareSet returned a NULL OpenGL context");
-      }
-    }
-
-    MacOSXCGLGraphicsConfiguration config = (MacOSXCGLGraphicsConfiguration) drawable.getNativeSurface().getGraphicsConfiguration();
-    GLCapabilitiesImmutable capabilitiesChosen = (GLCapabilitiesImmutable) config.getChosenCapabilities();
-    GLProfile glp = capabilitiesChosen.getGLProfile();
+  @Override
+  protected boolean createImpl(final long shareWithHandle) throws GLException {
+    final MacOSXCGLGraphicsConfiguration config = (MacOSXCGLGraphicsConfiguration) drawable.getNativeSurface().getGraphicsConfiguration();
+    final GLCapabilitiesImmutable capabilitiesChosen = (GLCapabilitiesImmutable) config.getChosenCapabilities();
+    final GLProfile glp = capabilitiesChosen.getGLProfile();
     if( glp.isGLES1() || glp.isGLES2() || glp.isGLES3() ||
         ( glp.isGL3() && !isLionOrLater ) || ( glp.isGL4() && !isMavericksOrLater ) ) {
         throw new GLException("OpenGL profile not supported on MacOSX "+Platform.getOSVersionNumber()+": "+glp);
     }
-
-    if (DEBUG) {
-      System.err.println("Share context is " + toHexString(share) + " for " + this);
+    if( 0 != shareWithHandle && GLBackendType.NSOPENGL != getOpenGLMode() ) {
+        throw new GLException("Context sharing only supported in mode "+GLBackendType.NSOPENGL+": "+this);
     }
-    return share;
-  }
-
-  @Override
-  protected boolean createImpl(GLContextImpl shareWith) throws GLException {
-    long share = createImplPreset(shareWith);
-    contextHandle = createContextARB(share, true);
+    contextHandle = createContextARB(shareWithHandle, true);
     return 0 != contextHandle;
   }
 
diff --git a/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXCGLDrawable.java b/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXCGLDrawable.java
index bb36a7219..448e3e221 100644
--- a/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXCGLDrawable.java
+++ b/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXCGLDrawable.java
@@ -84,7 +84,10 @@ public abstract class MacOSXCGLDrawable extends GLDrawableImpl {
   // GLPbuffer, a GLJPanel and a GLCanvas simultaneously) but should
   // be enough to get things off the ground.
   public enum GLBackendType {
-    NSOPENGL(0), CGL(1);
+    /** Default OpenGL Backend */
+    NSOPENGL(0),
+    /** Alternative OpenGL Backend, only used for external context! */
+    CGL(1);
 
     public final int id;
 
diff --git a/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXExternalCGLContext.java b/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXExternalCGLContext.java
index 5d036d45a..ebb0fc6d1 100644
--- a/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXExternalCGLContext.java
+++ b/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXExternalCGLContext.java
@@ -50,7 +50,6 @@ import javax.media.opengl.GLDrawableFactory;
 import javax.media.opengl.GLException;
 
 import jogamp.nativewindow.WrappedSurface;
-import jogamp.opengl.GLContextImpl;
 import jogamp.opengl.GLContextShareSet;
 import jogamp.opengl.macosx.cgl.MacOSXCGLDrawable.GLBackendType;
 
@@ -118,7 +117,7 @@ public class MacOSXExternalCGLContext extends MacOSXCGLContext {
   }
 
   @Override
-  protected boolean createImpl(GLContextImpl shareWith) throws GLException {
+  protected boolean createImpl(final long shareWithHandle) throws GLException {
       return true;
   }
 
diff --git a/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsWGLContext.java b/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsWGLContext.java
index b1e41624d..b214252c1 100644
--- a/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsWGLContext.java
+++ b/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsWGLContext.java
@@ -268,7 +268,7 @@ public class WindowsWGLContext extends GLContextImpl {
    * called by {@link #makeCurrentImpl()}.
    */
   @Override
-  protected boolean createImpl(GLContextImpl shareWith) {
+  protected boolean createImpl(long shareWithHandle) {
     final AbstractGraphicsConfiguration config = drawable.getNativeSurface().getGraphicsConfiguration();
     final AbstractGraphicsDevice device = config.getScreen().getDevice();
     final WindowsWGLDrawableFactory factory = (WindowsWGLDrawableFactory)drawable.getFactoryImpl();
@@ -278,18 +278,7 @@ public class WindowsWGLContext extends GLContextImpl {
     isGLReadDrawableAvailable(); // trigger setup wglGLReadDrawableAvailable
 
     if (DEBUG) {
-        System.err.println(getThreadName() + ": createImpl: START "+glCaps+", share "+shareWith);
-    }
-
-    // Windows can set up sharing of display lists after creation time
-    long share;
-    if ( null != shareWith ) {
-        share = shareWith.getHandle();
-        if (share == 0) {
-            throw new GLException("GLContextShareSet returned an invalid OpenGL context");
-        }
-    } else {
-        share = 0;
+        System.err.println(getThreadName() + ": createImpl: START "+glCaps+", share "+toHexString(shareWithHandle));
     }
 
     boolean createContextARBTried = false;
@@ -300,17 +289,17 @@ public class WindowsWGLContext extends GLContextImpl {
             if(GLContext.CONTEXT_NOT_CURRENT == sharedContext.makeCurrent()) {
                 throw new GLException("Could not make Shared Context current: "+sharedContext);
             }
-            contextHandle = createContextARB(share, true);
+            contextHandle = createContextARB(shareWithHandle, true);
             sharedContext.release();
             if (!wglMakeContextCurrent(drawable.getHandle(), drawableRead.getHandle(), contextHandle)) {
                 throw new GLException("Cannot make previous verified context current: 0x" + toHexString(contextHandle) + ", werr: " + GDI.GetLastError());
             }
         } else {
-            contextHandle = createContextARB(share, true);
+            contextHandle = createContextARB(shareWithHandle, true);
         }
         createContextARBTried = true;
         if ( DEBUG && 0 != contextHandle ) {
-            System.err.println(getThreadName() + ": createImpl: OK (ARB, using sharedContext) share "+share);
+            System.err.println(getThreadName() + ": createImpl: OK (ARB, using sharedContext) share "+toHexString(shareWithHandle));
         }
     }
 
@@ -343,17 +332,17 @@ public class WindowsWGLContext extends GLContextImpl {
             }
             if ( isProcCreateContextAttribsARBAvailable && isExtARBCreateContextAvailable ) {
                 // initial ARB context creation
-                contextHandle = createContextARB(share, true);
+                contextHandle = createContextARB(shareWithHandle, true);
                 createContextARBTried=true;
                 if (DEBUG) {
                     if( 0 != contextHandle ) {
-                        System.err.println(getThreadName() + ": createContextImpl: OK (ARB, initial) share "+share);
+                        System.err.println(getThreadName() + ": createContextImpl: OK (ARB, initial) share "+toHexString(shareWithHandle));
                     } else {
-                        System.err.println(getThreadName() + ": createContextImpl: NOT OK (ARB, initial) - creation failed - share "+share);
+                        System.err.println(getThreadName() + ": createContextImpl: NOT OK (ARB, initial) - creation failed - share "+toHexString(shareWithHandle));
                     }
                 }
             } else if (DEBUG) {
-                System.err.println(getThreadName() + ": createContextImpl: NOT OK (ARB, initial) - extension not available - share "+share+
+                System.err.println(getThreadName() + ": createContextImpl: NOT OK (ARB, initial) - extension not available - share "+toHexString(shareWithHandle)+
                                    ", isProcCreateContextAttribsARBAvailable "+isProcCreateContextAttribsARBAvailable+", isExtGLXARBCreateContextAvailable "+isExtARBCreateContextAvailable);
             }
         }
@@ -362,7 +351,7 @@ public class WindowsWGLContext extends GLContextImpl {
     }
 
     if( 0 != contextHandle ) {
-        share = 0; // mark as shared thx to the ARB create method
+        shareWithHandle = 0; // mark as shared thx to the ARB create method
         if( 0 != temp_ctx ) {
             WGL.wglMakeCurrent(0, 0);
             WGL.wglDeleteContext(temp_ctx);
@@ -387,16 +376,17 @@ public class WindowsWGLContext extends GLContextImpl {
             WGL.wglDeleteContext(contextHandle);
             throw new GLException("Error making old context current: 0x" + toHexString(contextHandle) + ", werr: " + GDI.GetLastError());
         }
-        if( 0 != share ) {
+        if( 0 != shareWithHandle ) {
+            // Windows can set up sharing of display lists after creation time if using GDI
             // Only utilize the classic GDI 'wglShareLists' shared context method
             // for traditional non ARB context.
-            if ( !WGL.wglShareLists(share, contextHandle) ) {
-                throw new GLException("wglShareLists(" + toHexString(share) +
+            if ( !WGL.wglShareLists(shareWithHandle, contextHandle) ) {
+                throw new GLException("wglShareLists(" + toHexString(shareWithHandle) +
                                       ", " + toHexString(contextHandle) + ") failed: werr " + GDI.GetLastError());
             }
         }
         if (DEBUG) {
-            System.err.println(getThreadName() + ": createImpl: OK (old) share "+share);
+            System.err.println(getThreadName() + ": createImpl: OK (old) share "+toHexString(shareWithHandle));
         }
     }
 
diff --git a/src/jogl/classes/jogamp/opengl/x11/glx/X11ExternalGLXContext.java b/src/jogl/classes/jogamp/opengl/x11/glx/X11ExternalGLXContext.java
index 9b7b0f5ae..ff9363ca0 100644
--- a/src/jogl/classes/jogamp/opengl/x11/glx/X11ExternalGLXContext.java
+++ b/src/jogl/classes/jogamp/opengl/x11/glx/X11ExternalGLXContext.java
@@ -51,7 +51,6 @@ import javax.media.opengl.GLException;
 import javax.media.opengl.GLProfile;
 
 import jogamp.nativewindow.WrappedSurface;
-import jogamp.opengl.GLContextImpl;
 import jogamp.opengl.GLContextShareSet;
 
 import com.jogamp.common.nio.Buffers;
@@ -114,7 +113,7 @@ public class X11ExternalGLXContext extends X11GLXContext {
   }
 
   @Override
-  protected boolean createImpl(GLContextImpl shareWith) {
+  protected boolean createImpl(final long shareWithHandle) {
       return true;
   }
 
diff --git a/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXContext.java b/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXContext.java
index 10f21f0c3..94620c4fc 100644
--- a/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXContext.java
+++ b/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXContext.java
@@ -283,7 +283,7 @@ public class X11GLXContext extends GLContextImpl {
   }
 
   @Override
-  protected boolean createImpl(GLContextImpl shareWith) {
+  protected boolean createImpl(final long shareWithHandle) {
     boolean direct = true; // try direct always
     isDirect = false; // fall back
 
@@ -293,15 +293,8 @@ public class X11GLXContext extends GLContextImpl {
     final X11GLXContext sharedContext = (X11GLXContext) factory.getOrCreateSharedContext(device);
     long display = device.getHandle();
 
-    final long share;
-    if ( null != shareWith ) {
-        share = shareWith.getHandle();
-        if (share == 0) {
-            throw new GLException("GLContextShareSet returned an invalid OpenGL context");
-        }
-        direct = GLX.glXIsDirect(display, share);
-    } else {
-        share = 0;
+    if ( 0 != shareWithHandle ) {
+        direct = GLX.glXIsDirect(display, shareWithHandle);
     }
 
     final GLCapabilitiesImmutable glCaps = (GLCapabilitiesImmutable) config.getChosenCapabilities();
@@ -313,7 +306,7 @@ public class X11GLXContext extends GLContextImpl {
         if(glp.isGL3()) {
           throw new GLException(getThreadName()+": Unable to create OpenGL >= 3.1 context");
         }
-        contextHandle = GLX.glXCreateContext(display, config.getXVisualInfo(), share, direct);
+        contextHandle = GLX.glXCreateContext(display, config.getXVisualInfo(), shareWithHandle, direct);
         if ( 0 == contextHandle ) {
           throw new GLException(getThreadName()+": Unable to create context(0)");
         }
@@ -325,7 +318,7 @@ public class X11GLXContext extends GLContextImpl {
         }
         isDirect = GLX.glXIsDirect(display, contextHandle);
         if (DEBUG) {
-            System.err.println(getThreadName() + ": createContextImpl: OK (old-1) share "+share+", direct "+isDirect+"/"+direct);
+            System.err.println(getThreadName() + ": createContextImpl: OK (old-1) share "+toHexString(shareWithHandle)+", direct "+isDirect+"/"+direct);
         }
         return true;
     }
@@ -334,10 +327,10 @@ public class X11GLXContext extends GLContextImpl {
 
     // utilize the shared context's GLXExt in case it was using the ARB method and it already exists
     if( null != sharedContext && sharedContext.isCreatedWithARBMethod() ) {
-        contextHandle = createContextARB(share, direct);
+        contextHandle = createContextARB(shareWithHandle, direct);
         createContextARBTried = true;
         if ( DEBUG && 0 != contextHandle ) {
-            System.err.println(getThreadName() + ": createContextImpl: OK (ARB, using sharedContext) share "+share);
+            System.err.println(getThreadName() + ": createContextImpl: OK (ARB, using sharedContext) share "+toHexString(shareWithHandle));
         }
     }
 
@@ -345,7 +338,7 @@ public class X11GLXContext extends GLContextImpl {
     if( 0 == contextHandle ) {
         // To use GLX_ARB_create_context, we have to make a temp context current,
         // so we are able to use GetProcAddress
-        temp_ctx = GLX.glXCreateNewContext(display, config.getFBConfig(), GLX.GLX_RGBA_TYPE, share, direct);
+        temp_ctx = GLX.glXCreateNewContext(display, config.getFBConfig(), GLX.GLX_RGBA_TYPE, shareWithHandle, direct);
         if ( 0 == temp_ctx ) {
             throw new GLException(getThreadName()+": Unable to create temp OpenGL context(1)");
         }
@@ -360,17 +353,17 @@ public class X11GLXContext extends GLContextImpl {
             final boolean isExtARBCreateContextAvailable = isExtensionAvailable("GLX_ARB_create_context");
             if ( isProcCreateContextAttribsARBAvailable && isExtARBCreateContextAvailable ) {
                 // initial ARB context creation
-                contextHandle = createContextARB(share, direct);
+                contextHandle = createContextARB(shareWithHandle, direct);
                 createContextARBTried=true;
                 if (DEBUG) {
                     if( 0 != contextHandle ) {
-                        System.err.println(getThreadName() + ": createContextImpl: OK (ARB, initial) share "+share);
+                        System.err.println(getThreadName() + ": createContextImpl: OK (ARB, initial) share "+toHexString(shareWithHandle));
                     } else {
-                        System.err.println(getThreadName() + ": createContextImpl: NOT OK (ARB, initial) - creation failed - share "+share);
+                        System.err.println(getThreadName() + ": createContextImpl: NOT OK (ARB, initial) - creation failed - share "+toHexString(shareWithHandle));
                     }
                 }
             } else if (DEBUG) {
-                System.err.println(getThreadName() + ": createContextImpl: NOT OK (ARB, initial) - extension not available - share "+share+
+                System.err.println(getThreadName() + ": createContextImpl: NOT OK (ARB, initial) - extension not available - share "+toHexString(shareWithHandle)+
                                    ", isProcCreateContextAttribsARBAvailable "+isProcCreateContextAttribsARBAvailable+", isExtGLXARBCreateContextAvailable "+isExtARBCreateContextAvailable);
             }
         }
@@ -404,7 +397,7 @@ public class X11GLXContext extends GLContextImpl {
           throw new GLException(getThreadName()+": Error making context(1) current: display "+toHexString(display)+", context "+toHexString(contextHandle)+", drawable "+drawable);
         }
         if (DEBUG) {
-            System.err.println(getThreadName() + ": createContextImpl: OK (old-2) share "+share);
+            System.err.println(getThreadName() + ": createContextImpl: OK (old-2) share "+toHexString(shareWithHandle));
         }
     }
     isDirect = GLX.glXIsDirect(display, contextHandle);