duh

examples/shader/compute_shader_game_of_life.rs

@@ -75,21 +75,19 @@ struct GameOfLifeComputePlugin;
 struct GameOfLifeLabel;
 
 impl Plugin for GameOfLifeComputePlugin {
-    fn build(&self, app: &mut App) {
-        // Extract the game of life image resource from the main world into the render world
-        // for operation on by the compute shader and display on the sprite.
-        app.add_plugins(ExtractResourcePlugin::<GameOfLifeImage>::default());
-    }
+    fn build(&self, _app: &mut App) {}
 
     fn finish(&self, app: &mut App) {
         let render_app = app.sub_app_mut(RenderApp);
 
-        if !render_app
-            .world
-            .resource::<RenderAdapter>()
-            .get_texture_format_features(TextureFormat::Rgba8Unorm)
-            .allowed_usages
-            .contains(TextureUsages::STORAGE_BINDING)
+        if !dbg!(
+            render_app
+                .world
+                .resource::<RenderAdapter>()
+                .get_texture_format_features(TextureFormat::Rgba8Unorm)
+                .allowed_usages
+        )
+        .contains(TextureUsages::STORAGE_BINDING)
         {
             error!("Rgba8Unorm texture format does not support STORAGE_BINDING usage, exiting.");
             app.world.send_event(AppExit);
@@ -104,6 +102,10 @@ impl Plugin for GameOfLifeComputePlugin {
         let mut render_graph = render_app.world.resource_mut::<RenderGraph>();
         render_graph.add_node(GameOfLifeLabel, GameOfLifeNode::default());
         render_graph.add_node_edge(GameOfLifeLabel, bevy::render::graph::CameraDriverLabel);
+
+        // Extract the game of life image resource from the main world into the render world
+        // for operation on by the compute shader and display on the sprite.
+        app.add_plugins(ExtractResourcePlugin::<GameOfLifeImage>::default());
     }
 }