pbr lightning for volumetric sphere

src/main.rs

@@ -1,4 +1,5 @@
 use bevy::{
+    color::palettes::css::RED,
     pbr::{ExtendedMaterial, MaterialExtension},
     prelude::*,
     render::{render_resource::*, storage::ShaderStorageBuffer},
@@ -35,6 +36,7 @@ fn setup(
         Mesh3d(meshes.add(Cuboid::new(2.0, 2.0, 2.0))),
         MeshMaterial3d(materials.add(ExtendedMaterial {
             base: StandardMaterial {
+                base_color: RED.into(),
                 alpha_mode: AlphaMode::Blend,
                 ..default()
             },