Call make_current(eye) when rendering for each eye.
@@ -149,6 +149,8 @@ impl<W> DemoApp<W> where W: Window {
debug!("modelview transform={:?}", modelview_transform);
let viewport = self.window.viewport(View::Stereo(render_scene_index));
+ self.window.make_current(View::Stereo(render_scene_index));
+
self.renderer
.replace_dest_framebuffer(DestFramebuffer::Default {
viewport,
