From 0d570d008f0971827898e52e03aa190b64477481 Mon Sep 17 00:00:00 2001
From: Nikita Tsukanov <keks9n@gmail.com>
Date: Wed, 19 Dec 2018 10:53:07 +0300
Subject: [PATCH] Docs for IRenderTimeCriticalVisual

---
 .../VisualTree/IRenderTimeCriticalVisual.cs          | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/Avalonia.Visuals/VisualTree/IRenderTimeCriticalVisual.cs b/src/Avalonia.Visuals/VisualTree/IRenderTimeCriticalVisual.cs
index b8be59bcc9..55f7bf951c 100644
--- a/src/Avalonia.Visuals/VisualTree/IRenderTimeCriticalVisual.cs
+++ b/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);
     }
 }