2 files changed, 22 insertions, 4 deletions
diff --git a/src/jogl/classes/jogamp/opengl/GLContextImpl.java b/src/jogl/classes/jogamp/opengl/GLContextImpl.java
index 6f2786b03..99693aabe 100644
--- a/src/jogl/classes/jogamp/opengl/GLContextImpl.java
+++ b/src/jogl/classes/jogamp/opengl/GLContextImpl.java
@@ -380,7 +380,10 @@ public abstract class GLContextImpl extends GLContext {
         if (null == getGLDrawable().getChosenGLCapabilities()) {
             throw new GLException("drawable has no chosen GLCapabilities: "+getGLDrawable());
         }
-        additionalCtxCreationFlags |= DEBUG_GL ? GLContext.CTX_OPTION_DEBUG : 0 ;        
+        if(DEBUG_GL) {
+            // only impacts w/ createContextARB(..)
+            additionalCtxCreationFlags |= GLContext.CTX_OPTION_DEBUG ;
+        }
     }
 
     lockConsiderFailFast();
@@ -408,14 +411,17 @@ public abstract class GLContextImpl extends GLContext {
         // throws an GLException if not 
         getGLDrawable().getGLProfile().verifyEquality(gl.getGLProfile());
         
+        glDebugHandler.init( isGL2GL3() && isGLDebugEnabled() );
+
         if(DEBUG_GL) {
             gl = gl.getContext().setGL( GLPipelineFactory.create("javax.media.opengl.Debug", null, gl, null) );
-            glDebugHandler.addListener(new GLDebugMessageHandler.StdErrGLDebugListener(true));
+            if(glDebugHandler.isEnabled()) {
+                glDebugHandler.addListener(new GLDebugMessageHandler.StdErrGLDebugListener(true));
+            }
         }
         if(TRACE_GL) {
             gl = gl.getContext().setGL( GLPipelineFactory.create("javax.media.opengl.Trace", null, gl, new Object[] { System.err } ) );
         }               
-        glDebugHandler.init(0 != (additionalCtxCreationFlags & GLContext.CTX_OPTION_DEBUG));        
       }
 
       /* FIXME: refactor dependence on Java 2D / JOGL bridge
diff --git a/src/jogl/classes/jogamp/opengl/GLDebugMessageHandler.java b/src/jogl/classes/jogamp/opengl/GLDebugMessageHandler.java
index 9ca573536..8ca0c016d 100644
--- a/src/jogl/classes/jogamp/opengl/GLDebugMessageHandler.java
+++ b/src/jogl/classes/jogamp/opengl/GLDebugMessageHandler.java
@@ -99,9 +99,14 @@ public class GLDebugMessageHandler {
     }
     
     public void init(boolean enable) {
+        if(DEBUG) {
+            System.err.println("GLDebugMessageHandler.init("+enable+")");
+        }
         init();
         if(isAvailable()) {
             enableImpl(enable);
+        } else if(DEBUG) {
+            System.err.println("GLDebugMessageHandler.init("+enable+") .. n/a");
         }
     }
     
@@ -111,6 +116,13 @@ public class GLDebugMessageHandler {
             return;
         }
         
+        if( !ctx.isGLDebugEnabled() ) {
+            if(DEBUG) {
+                System.err.println("GLDebugMessageHandler: GL DEBUG not set in ARB ctx options: "+ctx.getGLVersion());
+            }
+            return;            
+        }
+        
         if( ctx.isExtensionAvailable(GL_ARB_debug_output) ) {
             extName = GL_ARB_debug_output;
             extType = EXT_ARB;
@@ -124,7 +136,7 @@ public class GLDebugMessageHandler {
         
         if(0 == extType) {
             if(DEBUG) {
-                System.err.println("GLDebugMessageHandler: No extension available!");
+                System.err.println("GLDebugMessageHandler: No extension available! "+ctx.getGLVersion());
             }
             return;
         }