1 files changed, 5 insertions, 0 deletions
diff --git a/src/jogl/native/macosx/MacOSXWindowSystemInterface.m b/src/jogl/native/macosx/MacOSXWindowSystemInterface.m
index 9a7356b7c..5973ca45b 100644
--- a/src/jogl/native/macosx/MacOSXWindowSystemInterface.m
+++ b/src/jogl/native/macosx/MacOSXWindowSystemInterface.m
@@ -470,6 +470,7 @@ void deletePixelFormat(void* pixelFormat) {
 void* createContext(void* shareContext,
                     void* view,
                     void* pixelFormat,
+                    Bool opaque,
                     int* viewNotReady)
 {
     getRendererInfo();
@@ -520,6 +521,10 @@ void* createContext(void* shareContext,
         
         if (nsContext != nil) {
           if (nsView != nil) {
+            if(!opaque) {
+                long zeroOpacity = 0;
+                [nsContext setValues:&zeroOpacity forParameter:NSOpenGLCPSurfaceOpacity];
+            }
             [nsContext setView:nsView];
             [nsView unlockFocus];        
           }