add ability to set opacity on GL context: setCurrentContextOpacity takes 0 or 1

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/branches/JOGL_2_SANDBOX@1775 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 6 insertions, 0 deletions

diff --git a/src/native/jogl/MacOSXWindowSystemInterface.m b/src/native/jogl/MacOSXWindowSystemInterface.m
index 9fbc4c006..5c02650b0 100644
--- a/src/native/jogl/MacOSXWindowSystemInterface.m
+++ b/src/native/jogl/MacOSXWindowSystemInterface.m
@@ -559,6 +559,12 @@ Bool flushBuffer(void* context) {
   return true;
 }
 
+void setCurrentContextOpacity(void* context, int opacity) {
+  NSOpenGLContext *nsContext = (NSOpenGLContext*)context;
+  
+  [nsContext setValues:&opacity forParameter:NSOpenGLCPSurfaceOpacity];
+}
+
 void updateContext(void* context) {
   NSOpenGLContext *nsContext = (NSOpenGLContext*)context;