show headset view in monitor window

src/bin/vrtue.rs

@@ -14,7 +14,7 @@ pub fn main() {
   let mut vr = vr::VR::new().expect("VR init");
 
   let mut window: PistonWindow =
-    WindowSettings::new("Hello Virtual World!", [512; 2])
+    WindowSettings::new("Hello, Britannia!", [1024; 2])
         .exit_on_esc(true)
         .vsync(false)
         .build().expect("Building Window");

src/view.rs

@@ -93,9 +93,7 @@ impl ViewRoot<gfx_device_gl::Device, ColorFormat, DepthFormat> {
                    &buffers.depth);
     }
     // draw monitor window
-    window.encoder.update_constant_buffer(&self.trans,
-                                          &Trans { matrix: *na::Matrix4::one().as_ref() });
-    window.encoder.clear(&window.output_color, [0.1, 0.2, 0.3, 1.0]);
+    window.encoder.clear(&window.output_color, [0.005, 0.005, 0.01, 1.0]);
     window.encoder.clear_depth(&window.output_stencil, 1.0);
     scene.render(&mut window.factory,
                  &mut window.encoder,