From 7ba4a6504f51831ea9faa0b04ee8a0a6a4401688 Mon Sep 17 00:00:00 2001
From: walbourn_cp <SND\walbourn_cp>
Date: Thu, 11 Sep 2014 15:32:07 -0700
Subject: [PATCH] Added explicit test of CanConvert for all use of
 IWICFormatConverter

---
 ScreenGrab/ScreenGrab.cpp             |  7 +++++++
 WICTextureLoader/WICTextureLoader.cpp | 14 ++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/ScreenGrab/ScreenGrab.cpp b/ScreenGrab/ScreenGrab.cpp
index 685e2ff..82a2bb8 100644
--- a/ScreenGrab/ScreenGrab.cpp
+++ b/ScreenGrab/ScreenGrab.cpp
@@ -1111,6 +1111,13 @@ HRESULT DirectX::SaveWICTextureToFile( _In_ ID3D11DeviceContext* pContext,
             return hr;
         }
 
+        BOOL canConvert = FALSE;
+        hr = FC->CanConvert( pfGuid, targetGuid, &canConvert );
+        if ( FAILED(hr) || !canConvert )
+        {
+            return E_UNEXPECTED;
+        }
+
         hr = FC->Initialize( source.Get(), targetGuid, WICBitmapDitherTypeNone, 0, 0, WICBitmapPaletteTypeCustom );
         if ( FAILED(hr) )
         {
diff --git a/WICTextureLoader/WICTextureLoader.cpp b/WICTextureLoader/WICTextureLoader.cpp
index bb9b53f..040398a 100644
--- a/WICTextureLoader/WICTextureLoader.cpp
+++ b/WICTextureLoader/WICTextureLoader.cpp
@@ -554,6 +554,13 @@ static HRESULT CreateTextureFromWIC( _In_ ID3D11Device* d3dDevice,
             if ( FAILED(hr) )
                 return hr;
 
+            BOOL canConvert = FALSE;
+            hr = FC->CanConvert( pfScaler, convertGUID, &canConvert );
+            if ( FAILED(hr) || !canConvert )
+            {
+                return E_UNEXPECTED;
+            }
+
             hr = FC->Initialize( scaler.Get(), convertGUID, WICBitmapDitherTypeErrorDiffusion, 0, 0, WICBitmapPaletteTypeCustom );
             if ( FAILED(hr) )
                 return hr;
@@ -575,6 +582,13 @@ static HRESULT CreateTextureFromWIC( _In_ ID3D11Device* d3dDevice,
         if ( FAILED(hr) )
             return hr;
 
+        BOOL canConvert = FALSE;
+        hr = FC->CanConvert( pixelFormat, convertGUID, &canConvert );
+        if ( FAILED(hr) || !canConvert )
+        {
+            return E_UNEXPECTED;
+        }
+
         hr = FC->Initialize( frame, convertGUID, WICBitmapDitherTypeErrorDiffusion, 0, 0, WICBitmapPaletteTypeCustom );
         if ( FAILED(hr) )
             return hr;