From 90f2b089ebb2da133d27b612e21ae2f5fb4115d5 Mon Sep 17 00:00:00 2001
From: Evan Husted <greem@greemdev.net>
Date: Sun, 2 Mar 2025 23:51:56 -0600
Subject: [PATCH] fix nullref when switching vsync mode with turbo mode

---
 src/Ryujinx.Graphics.Gpu/Engine/Threed/StateUpdater.cs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Ryujinx.Graphics.Gpu/Engine/Threed/StateUpdater.cs b/src/Ryujinx.Graphics.Gpu/Engine/Threed/StateUpdater.cs
index f50ec852e..4620821cb 100644
--- a/src/Ryujinx.Graphics.Gpu/Engine/Threed/StateUpdater.cs
+++ b/src/Ryujinx.Graphics.Gpu/Engine/Threed/StateUpdater.cs
@@ -1065,7 +1065,14 @@ namespace Ryujinx.Graphics.Gpu.Engine.Threed
         /// </summary>
         private void UpdateIndexBufferState()
         {
-            IndexBufferState indexBuffer = _state.State.IndexBufferState;
+            IndexBufferState? indexBufferNullable = _state?.State.IndexBufferState;
+
+            if (!indexBufferNullable.HasValue)
+            {
+                return;
+            }
+
+            IndexBufferState indexBuffer = indexBufferNullable.Value;
 
             if (_drawState.IndexCount == 0)
             {