Docs for IRenderTimeCriticalVisual

src/Avalonia.Visuals/VisualTree/IRenderTimeCriticalVisual.cs

@@ -4,8 +4,20 @@ namespace Avalonia.VisualTree
 {
     public interface IRenderTimeCriticalVisual
     {
+        /// <summary>
+        /// Checks if visual has time critical content. You need to call InvalidateVisual for this property to be re-queried.
+        /// </summary>
         bool HasRenderTimeCriticalContent { get; }
+        /// <summary>
+        /// Checks if visual has a new frame. This property can be read from any thread.
+        /// </summary>
         bool ThreadSafeHasNewFrame { get; }
+        /// <summary>
+        /// Draws the new frame during the render pass. That can happen on any thread
+        /// </summary>
+        /// <param name="context">DrawingContext. The available API is limited by stuff that can run on non-UI thread (brushes has to be immutable, no visual brush, etc)</param>
+        /// <param name="logicalSize">Logical size of the visual during the layout pass associated with the current frame</param>
+        /// <param name="scaling">DPI scaling of the target surface associated with the current frame</param>
         void ThreadSafeRender(DrawingContext context, Size logicalSize, double scaling);
     }
 }