From a24c29175624c06ed58664056a5d411132ddec52 Mon Sep 17 00:00:00 2001 From: Dan Walmsley Date: Thu, 7 Feb 2019 15:03:10 +0000 Subject: [PATCH] potential fix for nre in deferred renderer. --- .../Rendering/DeferredRenderer.cs | 20 +++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/src/Avalonia.Visuals/Rendering/DeferredRenderer.cs b/src/Avalonia.Visuals/Rendering/DeferredRenderer.cs index 60e624948e..f9c21bd212 100644 --- a/src/Avalonia.Visuals/Rendering/DeferredRenderer.cs +++ b/src/Avalonia.Visuals/Rendering/DeferredRenderer.cs @@ -255,15 +255,19 @@ namespace Avalonia.Rendering } var (scene, updated) = UpdateRenderLayersAndConsumeSceneIfNeeded(GetContext); - using (scene) + + if (scene != null) { - var overlay = DrawDirtyRects || DrawFps; - if (DrawDirtyRects) - _dirtyRectsDisplay.Tick(); - if (overlay) - RenderOverlay(scene.Item, GetContext()); - if (updated || forceComposite || overlay) - RenderComposite(scene.Item, GetContext()); + using (scene) + { + var overlay = DrawDirtyRects || DrawFps; + if (DrawDirtyRects) + _dirtyRectsDisplay.Tick(); + if (overlay) + RenderOverlay(scene.Item, GetContext()); + if (updated || forceComposite || overlay) + RenderComposite(scene.Item, GetContext()); + } } } finally