From 8bbf2dacbfb4ead1535dea411035994f507f517d Mon Sep 17 00:00:00 2001
From: Mark Thompson <sw@jkqxz.net>
Date: Tue, 14 Nov 2017 13:02:26 +0000
Subject: [PATCH] hwcontext_d3d11: Log adapter details on device creation

This is helpful to know what device has actually been used.
---
 libavutil/hwcontext_d3d11va.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/libavutil/hwcontext_d3d11va.c b/libavutil/hwcontext_d3d11va.c
index 65dd6651fc..769c81fd77 100644
--- a/libavutil/hwcontext_d3d11va.c
+++ b/libavutil/hwcontext_d3d11va.c
@@ -515,8 +515,15 @@ static int d3d11va_device_create(AVHWDeviceContext *ctx, const char *device,
 
     hr = mD3D11CreateDevice(pAdapter, pAdapter ? D3D_DRIVER_TYPE_UNKNOWN : D3D_DRIVER_TYPE_HARDWARE, NULL, creationFlags, NULL, 0,
                    D3D11_SDK_VERSION, &device_hwctx->device, NULL, NULL);
-    if (pAdapter)
+    if (pAdapter) {
+        DXGI_ADAPTER_DESC2 desc;
+        hr = IDXGIAdapter2_GetDesc(pAdapter, &desc);
+        if (!FAILED(hr)) {
+            av_log(ctx, AV_LOG_INFO, "Using device %04x:%04x (%ls).\n",
+                   desc.VendorId, desc.DeviceId, desc.Description);
+        }
         IDXGIAdapter_Release(pAdapter);
+    }
     if (FAILED(hr)) {
         av_log(ctx, AV_LOG_ERROR, "Failed to create Direct3D device (%lx)\n", (long)hr);
         return AVERROR_UNKNOWN;
-- 
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