specify graphics drivers

(This isn't the best place for this, but RageDisplay drivers probably aren't
destined for arch.)

stepmania/src/archutils/Win32/arch_setup.h

@@ -7,6 +7,9 @@
 #define HAVE_CRYPTOPP
 #endif
 
+#define SUPPORT_OPENGL
+#define SUPPORT_D3D
+
 #if defined(__MINGW32__)
 #define _WINDOWS // This isn't defined under MinGW
 #define NEED_CSTDLIB_WORKAROUND // Needed for llabs() in MinGW

stepmania/src/archutils/Xbox/arch_setup.h

@@ -13,6 +13,8 @@
 // Xbox base path
 #define SYS_BASE_PATH "D:\\"
 
+#define SUPPORT_D3D
+
 /* Stubs: */
 inline HRESULT CoInitialize( LPVOID pvReserved ) { return S_OK; }
 inline void CoUninitialize() { }