d3dx9/tests: Add tests for using D3DXLoadSurfaceFromSurface() with default render target.

dlls/d3dx9_36/tests/surface.c

@@ -861,7 +861,28 @@ static void test_D3DXLoadSurface(IDirect3DDevice9 *device)
        ok(hr == D3D_OK, "D3DXLoadSurfaceFromSurface returned %#x, expected %#x\n", hr, D3D_OK);
 
        IDirect3DSurface9_Release(newsurf);
-    } else skip("Failed to create multisampled render target\n");
+    } else skip("Failed to create multisampled render target.\n");
+
+    hr = IDirect3DDevice9_GetRenderTarget(device, 0, &newsurf);
+    ok(hr == D3D_OK, "IDirect3DDevice9_GetRenderTarget returned %#x, expected %#x.\n", hr, D3D_OK);
+
+    hr = D3DXLoadSurfaceFromSurface(newsurf, NULL, NULL, surf, NULL, NULL, D3DX_FILTER_NONE, 0);
+    todo_wine
+    ok(hr == D3D_OK, "D3DXLoadSurfaceFromSurface returned %#x, expected %#x.\n", hr, D3D_OK);
+    hr = D3DXLoadSurfaceFromSurface(surf, NULL, NULL, newsurf, NULL, NULL, D3DX_FILTER_NONE, 0);
+    todo_wine
+    ok(hr == D3D_OK, "D3DXLoadSurfaceFromSurface returned %#x, expected %#x.\n", hr, D3D_OK);
+    hr = D3DXLoadSurfaceFromSurface(surf, NULL, NULL, newsurf, NULL, NULL, D3DX_FILTER_NONE, 0xff000000);
+    todo_wine
+    ok(hr == D3D_OK, "D3DXLoadSurfaceFromSurface returned %#x, expected %#x.\n", hr, D3D_OK);
+    hr = D3DXLoadSurfaceFromSurface(surf, NULL, NULL, newsurf, NULL, NULL, D3DX_FILTER_TRIANGLE | D3DX_FILTER_MIRROR, 0);
+    todo_wine
+    ok(hr == D3D_OK, "D3DXLoadSurfaceFromSurface returned %#x, expected %#x.\n", hr, D3D_OK);
+    hr = D3DXLoadSurfaceFromSurface(surf, NULL, NULL, newsurf, NULL, NULL, D3DX_FILTER_LINEAR, 0);
+    todo_wine
+    ok(hr == D3D_OK, "D3DXLoadSurfaceFromSurface returned %#x, expected %#x.\n", hr, D3D_OK);
+
+    IDirect3DSurface9_Release(newsurf);
 
     check_release((IUnknown*)surf, 0);