update

render_to_texture/README.md

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+#### Keyboard
+`R T F G V B` to rotate suzanne

render_to_texture/Sources/lnx/MyTrait.hx

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+package lnx;
+
+class MyTrait extends iron.Trait {
+	public function new() {
+		super();
+
+		notifyOnInit(function() {
+			// Retrieve camera object
+			var cam = cast(iron.Scene.active.getChild("Camera.001"), iron.object.CameraObject);
+
+			// Create render target for camera
+			cam.renderTarget = kha.Image.createRenderTarget(
+				640,
+				360,
+				kha.graphics4.TextureFormat.RGBA32,
+				kha.graphics4.DepthStencilFormat.NoDepthAndStencil
+			);
+
+			// Display camera output on this plane
+			var o = cast(object, iron.object.MeshObject);
+			o.materials[0].contexts[0].textures[0] = cam.renderTarget; // Override base color texture
+
+			notifyOnRender(function(g:kha.graphics4.Graphics) {
+				// Set as scene camera
+				var activeCamera = iron.Scene.active.camera;
+				iron.Scene.active.camera = cam;
+
+				// Update camera output
+				cam.renderFrame(g);
+				
+				// Restore original camera
+				iron.Scene.active.camera = activeCamera;
+			});
+		});
+	}
+}