[update] rendering to occur within the redraw event.

Author: vmarcella

crates/lambda-platform/src/gfx/render_pass.rs

@@ -125,7 +125,7 @@ impl SubpassBuilder {
     };
   }
 
-  pub fn use_color_attachment(
+  pub fn with_color_attachment(
     mut self,
     attachment_index: usize,
     layout: ImageLayoutHint,

lambda/src/core/component.rs

@@ -19,7 +19,6 @@ pub trait RenderableComponent<E>: Component<E> {
   fn on_render(
     &mut self,
     render_context: &mut super::render::RenderContext,
-    last_render: &Duration,
   ) -> Vec<super::render::command::RenderCommand>;
   fn on_renderer_detached(
     &mut self,

lambda/src/runtimes/mod.rs

@@ -260,17 +260,19 @@ impl Runtime for GenericRuntime {
           current_frame = Instant::now();
           let duration = &current_frame.duration_since(last_frame);
 
-          let render_api = active_render_context.as_mut().unwrap();
           // Update and render commands.
           for component in &mut component_stack {
             component.on_update(duration);
-            let commands = component.on_render(render_api, duration);
-            render_api.render(commands);
           }
 
           window.redraw();
         }
-        WinitEvent::RedrawRequested(_) => {}
+        WinitEvent::RedrawRequested(_) => {
+          for component in &mut component_stack {
+            let commands = component.on_render(active_render_context.as_mut().unwrap());
+            active_render_context.as_mut().unwrap().render(commands);
+          }
+        }
         WinitEvent::NewEvents(_) => {}
         WinitEvent::DeviceEvent { device_id, event } => {}
         WinitEvent::UserEvent(lambda_event) => match lambda_event {

tools/lambda_rs_demo/src/main.rs

@@ -136,7 +136,6 @@ impl RenderableComponent<Events> for DemoComponent {
   fn on_render(
     self: &mut DemoComponent,
     _render_context: &mut lambda::core::render::RenderContext,
-    _last_render: &std::time::Duration,
   ) -> Vec<RenderCommand> {
     let viewport =
       viewport::ViewportBuilder::new().build(self.width, self.height);