[pbr] Create a DirectionalLightBundle

crates/bevy_pbr/src/entity.rs

@@ -1,4 +1,8 @@
-use crate::{light::PointLight, material::StandardMaterial, render_graph::PBR_PIPELINE_HANDLE};
+use crate::{
+    light::{DirectionalLight, PointLight},
+    material::StandardMaterial,
+    render_graph::PBR_PIPELINE_HANDLE,
+};
 use bevy_asset::Handle;
 use bevy_ecs::bundle::Bundle;
 use bevy_render::{
@@ -40,10 +44,18 @@ impl Default for PbrBundle {
     }
 }
 
-/// A component bundle for "light" entities
+/// A component bundle for "point light" entities
 #[derive(Debug, Bundle, Default)]
 pub struct PointLightBundle {
     pub point_light: PointLight,
     pub transform: Transform,
     pub global_transform: GlobalTransform,
 }
+
+/// A component bundle for "directional light" entities
+#[derive(Debug, Bundle, Default)]
+pub struct DirectionalLightBundle {
+    pub directional_light: DirectionalLight,
+    pub transform: Transform,
+    pub global_transform: GlobalTransform,
+}

crates/bevy_pbr/src/lib.rs

@@ -32,6 +32,7 @@ impl Plugin for PbrPlugin {
     fn build(&self, app: &mut AppBuilder) {
         app.add_asset::<StandardMaterial>()
             .register_type::<PointLight>()
+            .register_type::<DirectionalLight>()
             .add_system_to_stage(
                 CoreStage::PostUpdate,
                 shader::asset_shader_defs_system::<StandardMaterial>.system(),

crates/bevy_pbr/src/light.rs

@@ -109,7 +109,7 @@ impl Default for DirectionalLight {
     fn default() -> Self {
         DirectionalLight {
             color: Color::rgb(1.0, 1.0, 1.0),
-            illuminance: 100000.0,
+            illuminance: 100_000.0,
             direction: Vec3::new(0.0, -1.0, 0.0),
         }
     }

examples/3d/3d_scene.rs

@@ -28,8 +28,12 @@ fn setup(
         ..Default::default()
     });
     // light
-    commands.spawn_bundle(PointLightBundle {
-        transform: Transform::from_xyz(4.0, 8.0, 4.0),
+    let transform = Transform::from_xyz(4.0, 8.0, 4.0).looking_at(Vec3::ZERO, Vec3::Y);
+    let directional_light = DirectionalLight::new(Color::WHITE, 10_000.0, transform.forward());
+
+    commands.spawn_bundle(DirectionalLightBundle {
+        directional_light,
+        transform,
         ..Default::default()
     });
     // camera