| Index: tools/viewer/sk_app/unix/GLWindowContext_unix.cpp
 | 
| diff --git a/tools/viewer/sk_app/unix/GLWindowContext_unix.cpp b/tools/viewer/sk_app/unix/GLWindowContext_unix.cpp
 | 
| index cde1eb2b5c615cbcae2186340585840b074c55ff..19f9731f5256835e87e250afb04291a45af96a19 100644
 | 
| --- a/tools/viewer/sk_app/unix/GLWindowContext_unix.cpp
 | 
| +++ b/tools/viewer/sk_app/unix/GLWindowContext_unix.cpp
 | 
| @@ -90,6 +90,7 @@
 | 
|  
 | 
|  void GLWindowContext_unix::onSwapBuffers() {
 | 
|      if (fDisplay && fGLContext) {
 | 
| +        printf("swapping\n");
 | 
|          glXSwapBuffers(fDisplay, fWindow);
 | 
|      }
 | 
|  }
 | 
| 
 |