diff --git a/gfx/angle/README.mozilla b/gfx/angle/README.mozilla
index 35a8f9f7dbe..acb2338c19d 100644
--- a/gfx/angle/README.mozilla
+++ b/gfx/angle/README.mozilla
@@ -57,6 +57,9 @@ In this order:
   angle-fix-vc12.patch:
     Fixes angle to build on Visual Studio 2013
 
+  angle-d3dcc47.patch:
+    Tell ANGLE about d3dcompiler_47.dll from WinSDK 8.1.
+
 In addition to these patches, the Makefile.in and moz.build build files are ours,
 they're not present in upsteam ANGLE. Therefore, changes made to the build files
 should not be stored in the local .patch files.
diff --git a/gfx/angle/angle-d3dcc47.patch b/gfx/angle/angle-d3dcc47.patch
new file mode 100644
index 00000000000..934af9b84cb
--- /dev/null
+++ b/gfx/angle/angle-d3dcc47.patch
@@ -0,0 +1,69 @@
+From: Jeff Gilbert <jgilbert@mozilla.com>
+Bug 982973 - Tell ANGLE about d3dcompiler_47.dll. - r=vlad
+
+diff --git a/gfx/angle/src/libGLESv2/renderer/Renderer.cpp b/gfx/angle/src/libGLESv2/renderer/Renderer.cpp
+--- a/gfx/angle/src/libGLESv2/renderer/Renderer.cpp
++++ b/gfx/angle/src/libGLESv2/renderer/Renderer.cpp
+@@ -17,16 +17,17 @@
+ 
+ #if !defined(ANGLE_ENABLE_D3D11)
+ // Enables use of the Direct3D 11 API for a default display, when available
+ #define ANGLE_ENABLE_D3D11 0
+ #endif
+ 
+ #define ANGLE_PRELOADED_D3DCOMPILER_MODULE_NAMES \
+     {                                            \
++        TEXT("d3dcompiler_47.dll"),              \
+         TEXT("d3dcompiler_46.dll"),              \
+         TEXT("d3dcompiler_43.dll")               \
+     }
+ 
+ 
+ namespace rx
+ {
+ 
+@@ -173,23 +174,23 @@ ShaderBlob *Renderer::compileToBinary(gl
+ 
+ extern "C"
+ {
+ 
+ rx::Renderer *glCreateRenderer(egl::Display *display, HDC hDc, EGLNativeDisplayType displayId)
+ {
+     rx::Renderer *renderer = NULL;
+     EGLint status = EGL_BAD_ALLOC;
+-    
++
+     if (ANGLE_ENABLE_D3D11 ||
+         displayId == EGL_D3D11_ELSE_D3D9_DISPLAY_ANGLE ||
+         displayId == EGL_D3D11_ONLY_DISPLAY_ANGLE)
+     {
+         renderer = new rx::Renderer11(display, hDc);
+-    
++
+         if (renderer)
+         {
+             status = renderer->initialize();
+         }
+ 
+         if (status == EGL_SUCCESS)
+         {
+             return renderer;
+@@ -200,17 +201,17 @@ rx::Renderer *glCreateRenderer(egl::Disp
+         }
+ 
+         // Failed to create a D3D11 renderer, try creating a D3D9 renderer
+         delete renderer;
+     }
+ 
+     bool softwareDevice = (displayId == EGL_SOFTWARE_DISPLAY_ANGLE);
+     renderer = new rx::Renderer9(display, hDc, softwareDevice);
+-    
++
+     if (renderer)
+     {
+         status = renderer->initialize();
+     }
+ 
+     if (status == EGL_SUCCESS)
+     {
+         return renderer;