[vtkusers] OpenGL Backbuffer on Mac

[Mathieu Malaterre]

> Here's the diff for vtkCarbonRenderWindow.cxx:
> 
> @@ -636,7 +636,7 @@
> // End the rendering process and display the image.
> void vtkCarbonRenderWindow::Frame()
> {
> -  if (!this->AbortRender && this->DoubleBuffer)
> +  if (!this->AbortRender && this->DoubleBuffer && this->SwapBuffers)
>      {
>      aglSwapBuffers(this->ContextId);
>      vtkDebugMacro(<< " SwapBuffers\n");


Michael,

	Please fill a bug report at:

	http://vtk.org/Bug

	And include your patch.

Thanks for your report,
Mathieu