Added timer_callback sample for user callbacks

[freeglut] / src / x11 / fg_init_x11.c

diff --git a/src/x11/fg_init_x11.c b/src/x11/fg_init_x11.c
index 49aefe6..d2907c9 100644 (file)
--- a/src/x11/fg_init_x11.c
+++ b/src/x11/fg_init_x11.c
@@ -1,5 +1,5 @@
 /*
- * freeglut_init_x11.c
+ * fg_init_x11.c
  *
  * Various freeglut initialization functions.
  *
@@ -176,12 +176,23 @@ void fgPlatformInitialize( const char* displayName )
     if( fgDisplay.pDisplay.Display == NULL )
         fgError( "failed to open display '%s'", XDisplayName( displayName ) );
 
+    if ( fgState.XSyncSwitch )
+        XSynchronize(fgDisplay.pDisplay.Display, True);
+
 #ifdef EGL_VERSION_1_0
     fghPlatformInitializeEGL();
 #else
     if( !glXQueryExtension( fgDisplay.pDisplay.Display, NULL, NULL ) )
         fgError( "OpenGL GLX extension not supported by display '%s'",
             XDisplayName( displayName ) );
+
+    /* This forces AMD Catalyst drivers to initialize and register a shutdown
+     * function, which must be done before our own call to atexit to prevent
+     * a crash if glutMainLoop is not called or is not exited cleanly.
+     * (see bug #206)
+     */
+    glXQueryExtensionsString( fgDisplay.pDisplay.Display,
+        DefaultScreen( fgDisplay.pDisplay.Display ));
 #endif
 
     fgDisplay.pDisplay.Screen = DefaultScreen( fgDisplay.pDisplay.Display );