transparent roughness and diffuse settings from app

src/main.rs

@@ -180,6 +180,8 @@ impl App {
         data.use_geometry_shader = false;
         data.num_lights_per_volume = 2;
         data.max_iterations_per_light = 20;
+        data.diffuse_raster_steps = 2;
+        data.diffuse_raster_size = 0.01;
         let mut scene_handler = scene::Scene::default();
         
         //load_model::load_model(&mut data)?;