From f5e9903860424a1dcccb6ddd4186f907c99aab45 Mon Sep 17 00:00:00 2001
From: baldurk <baldurk@baldurk.org>
Date: Thu, 27 Nov 2025 15:20:36 +0000
Subject: [PATCH] Don't return video interface if real interface is missing.
 Closes #3735

---
 renderdoc/driver/d3d11/d3d11_video.cpp | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/renderdoc/driver/d3d11/d3d11_video.cpp b/renderdoc/driver/d3d11/d3d11_video.cpp
index 171c11ec2..1ed044324 100644
--- a/renderdoc/driver/d3d11/d3d11_video.cpp
+++ b/renderdoc/driver/d3d11/d3d11_video.cpp
@@ -51,9 +51,17 @@ HRESULT STDMETHODCALLTYPE WrappedID3D11VideoDevice2::QueryInterface(REFIID riid,
   }
   else if(riid == __uuidof(ID3D11VideoDevice))
   {
-    *ppvObject = (ID3D11VideoDevice *)this;
-    AddRef();
-    return S_OK;
+    if(m_pReal)
+    {
+      *ppvObject = (ID3D11VideoDevice *)this;
+      AddRef();
+      return S_OK;
+    }
+    else
+    {
+      *ppvObject = NULL;
+      return E_NOINTERFACE;
+    }
   }
   else if(riid == __uuidof(ID3D11VideoDevice1))
   {