WinRT: added code to help debug a buildbot error
diff --git a/src/render/direct3d11/SDL_render_d3d11.c b/src/render/direct3d11/SDL_render_d3d11.c
index e093ce5..c89dfca 100644
--- a/src/render/direct3d11/SDL_render_d3d11.c
+++ b/src/render/direct3d11/SDL_render_d3d11.c
@@ -36,6 +36,11 @@
#ifdef __WINRT__
+#define STRING2(x) #x
+#define STRING(x) STRING2(x)
+#pragma message("NTDDI_VERSION is " STRING(NTDDI_VERSION))
+#pragma message("NTDDI_WIN8 is " STRING(NTDDI_WIN8))
+
#if NTDDI_VERSION > NTDDI_WIN8
#include <DXGI1_3.h>
#endif