public void RenderScene(Scene scene)
{
_renderer2D.BeginRendering();
_renderer2D.Clear(Color.FromArgb(255, 255, 255, 255));
// TODO It is inefficient to traverse all entities to find a camera each time.
var cameraEntity = scene.AllEntities.SingleOrDefault(e => e.HasComponent <CameraComponent>() && e.HasComponent <Transform2DComponent>());
if (cameraEntity != null)
{
var cameraComponent = cameraEntity.GetComponent <CameraComponent>();
cameraComponent.ScreenWidth = _renderer2D.ScreenWidth;
cameraComponent.ScreenHeight = _renderer2D.ScreenHeight;
var cameraTransformationMatrix = cameraEntity.Create2DWorldToScreenMatrix();
if (cameraComponent.AspectRatioBehavior == AspectRatioBehavior.Underscan)
{
_renderer2D.Clear(Color.FromArgb(255, 0, 0, 0));
var clipDimension = ComputeClipDimension(cameraComponent);
var clippingRectangle = new AxisAlignedRectangle(clipDimension);
_renderer2D.SetClippingRectangle(clippingRectangle);
_renderer2D.Clear(Color.FromArgb(255, 255, 255, 255));
}
UpdateRenderList(scene);
RenderEntities(cameraTransformationMatrix);
_debugRendererForRenderingSystem.DrawDebugInformation(_renderer2D, cameraTransformationMatrix);
if (cameraComponent.AspectRatioBehavior == AspectRatioBehavior.Underscan)
{
_renderer2D.ClearClipping();
}
}
else
{
Log.Warn("No camera component found in scene.");
}
RenderDiagnosticInfo();
_renderer2D.EndRendering(_renderingConfiguration.EnableVSync);
}