Backed out changeset 01478a143658 (bug 1159751) for causing bug 1184539.

CLOSED TREE

--HG--
extra : amend_source : 4ec25bfff3e810c29b68978142005b78fa8fb867

gfx/thebes/gfxWindowsPlatform.cpp

@@ -1911,11 +1911,6 @@ gfxWindowsPlatform::InitD3D11Devices()
   }
 
   bool useWARP = false;
-  bool allowWARP = false;
-
-  if (IsWin8OrLater()) {
-    allowWARP = true;
-  }
 
   nsCOMPtr<nsIGfxInfo> gfxInfo = services::GetGfxInfo();
   if (gfxInfo) {
@@ -1939,7 +1934,7 @@ gfxWindowsPlatform::InitD3D11Devices()
             }
         }
 
-        useWARP = allowWARP;
+        useWARP = true;
       }
     }
   }
@@ -1975,7 +1970,7 @@ gfxWindowsPlatform::InitD3D11Devices()
       if (!gfxPrefs::LayersD3D11DisableWARP()) {
         return;
       }
-      useWARP = allowWARP;
+      useWARP = true;
     }
   }
 
@@ -1997,7 +1992,7 @@ gfxWindowsPlatform::InitD3D11Devices()
         return;
       }
 
-      useWARP = allowWARP;
+      useWARP = true;
       adapter = nullptr;
     }
 
@@ -2007,7 +2002,7 @@ gfxWindowsPlatform::InitD3D11Devices()
         return;
       }
 
-      useWARP = allowWARP;
+      useWARP = true;
       adapter = nullptr;
     }