From 0ebf99f0b46e255310d71118811aa2cc7dc2ca13 Mon Sep 17 00:00:00 2001
From: baldurk <baldurk@baldurk.org>
Date: Mon, 25 Jul 2016 13:01:37 +0200
Subject: [PATCH] Avoid exception seeking to invalid row in mesh viewer

* This happened when jumping to a primitive from pixel history if the
  views were synced.
---
 renderdocui/Windows/BufferViewer.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/renderdocui/Windows/BufferViewer.cs b/renderdocui/Windows/BufferViewer.cs
index a7b791d4f..f191febcc 100644
--- a/renderdocui/Windows/BufferViewer.cs
+++ b/renderdocui/Windows/BufferViewer.cs
@@ -3465,7 +3465,8 @@ namespace renderdocui.Windows
 
                 if (scroll)
                 {
-                    if (g.RowCount > 0 && g.RowCount > primary.FirstDisplayedScrollingRowIndex)
+                    if (g.RowCount > 0 && primary.FirstDisplayedScrollingRowIndex >= 0 &&
+                        g.RowCount > primary.FirstDisplayedScrollingRowIndex)
                         g.FirstDisplayedScrollingRowIndex = primary.FirstDisplayedScrollingRowIndex;
                 }
             }