d3dx10/tests: Dynamically load d3d10 and skip if it's not present.

dlls/d3dx10_43/tests/Makefile.in

 TESTDLL = d3dx10_43.dll
-IMPORTS = d3dx10 d3d10
+IMPORTS = d3dx10
 
 C_SRCS = \
 	d3dx10.c

dlls/d3dx10_43/tests/d3dx10.c

@@ -41,12 +41,21 @@ static BOOL compare_float(float f, float g, unsigned int ulps)
 static ID3D10Device *create_device(void)
 {
     ID3D10Device *device;
+    HMODULE d3d10_mod = LoadLibraryA("d3d10.dll");
+    HRESULT (WINAPI *pD3D10CreateDevice)(IDXGIAdapter *, D3D10_DRIVER_TYPE, HMODULE, UINT, UINT, ID3D10Device **);
 
-    if (SUCCEEDED(D3D10CreateDevice(NULL, D3D10_DRIVER_TYPE_HARDWARE, NULL, 0, D3D10_SDK_VERSION, &device)))
+    if (!d3d10_mod)
+    {
+        win_skip("d3d10.dll not present\n");
+        return NULL;
+    }
+
+    pD3D10CreateDevice = (void *)GetProcAddress(d3d10_mod, "D3D10CreateDevice");
+    if (SUCCEEDED(pD3D10CreateDevice(NULL, D3D10_DRIVER_TYPE_HARDWARE, NULL, 0, D3D10_SDK_VERSION, &device)))
         return device;
-    if (SUCCEEDED(D3D10CreateDevice(NULL, D3D10_DRIVER_TYPE_WARP, NULL, 0, D3D10_SDK_VERSION, &device)))
+    if (SUCCEEDED(pD3D10CreateDevice(NULL, D3D10_DRIVER_TYPE_WARP, NULL, 0, D3D10_SDK_VERSION, &device)))
         return device;
-    if (SUCCEEDED(D3D10CreateDevice(NULL, D3D10_DRIVER_TYPE_REFERENCE, NULL, 0, D3D10_SDK_VERSION, &device)))
+    if (SUCCEEDED(pD3D10CreateDevice(NULL, D3D10_DRIVER_TYPE_REFERENCE, NULL, 0, D3D10_SDK_VERSION, &device)))
         return device;
 
     return NULL;