adds scene info for recursive rays

src/app_data.rs

@@ -65,4 +65,6 @@ pub struct AppData {
     pub max_iterations_per_light: u32,
     pub diffuse_raster_steps: u32,
     pub diffuse_raster_size: f32,
+    pub max_recursive_rays: u32,
+    pub diffuse_rays_per_hit: u32,
 }