From 4a53ecb12ead1a2e6735ad3365381516e6e2d3f6 Mon Sep 17 00:00:00 2001
From: wm4 <nfxjfg@googlemail.com>
Date: Thu, 4 Jan 2018 15:52:46 +0100
Subject: [PATCH] hwcontext_dxva2: initialize D3DDISPLAYMODEEX correctly

(cherry picked from commit 18fbfd7bf86effb49c0341b37b9c1d73940d688e)
---
 libavutil/hwcontext_dxva2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavutil/hwcontext_dxva2.c b/libavutil/hwcontext_dxva2.c
index 44ebdbca95..665c2d6d74 100644
--- a/libavutil/hwcontext_dxva2.c
+++ b/libavutil/hwcontext_dxva2.c
@@ -485,6 +485,7 @@ static int dxva2_device_create9ex(AVHWDeviceContext *ctx, UINT adapter)
     if (FAILED(hr))
         return AVERROR_UNKNOWN;
 
+    modeex.Size = sizeof(D3DDISPLAYMODEEX);
     hr = IDirect3D9Ex_GetAdapterDisplayModeEx(d3d9ex, adapter, &modeex, NULL);
     if (FAILED(hr)) {
         IDirect3D9Ex_Release(d3d9ex);