d3d8/tests: Warn that tests were skipped if we could not load d3d8.dll.

dlls/d3d8/tests/d3d8_main.c

@@ -107,7 +107,11 @@ START_TEST(d3d8_main)
 {
     HMODULE d3d8_handle = LoadLibraryA( "d3d8.dll" );
     if (!d3d8_handle)
+    {
+        skip("Could not load d3d8.dll\n");
         return;
+    }
+
     ValidateVertexShader = (void*)GetProcAddress (d3d8_handle, "ValidateVertexShader" );
     ValidatePixelShader = (void*)GetProcAddress (d3d8_handle, "ValidatePixelShader" );
     test_ValidateVertexShader();

dlls/d3d8/tests/device.c

@@ -763,8 +763,14 @@ static void test_display_modes(void)
 START_TEST(device)
 {
     HMODULE d3d8_handle = LoadLibraryA( "d3d8.dll" );
+    if (!d3d8_handle)
+    {
+        skip("Could not load d3d8.dll\n");
+        return;
+    }
 
     pDirect3DCreate8 = (void *)GetProcAddress( d3d8_handle, "Direct3DCreate8" );
+    ok(pDirect3DCreate8 != NULL, "Failed to get address of Direct3DCreate8\n");
     if (pDirect3DCreate8)
     {
         test_display_modes();

dlls/d3d8/tests/surface.c

@@ -129,7 +129,7 @@ START_TEST(surface)
     d3d8_handle = LoadLibraryA("d3d8.dll");
     if (!d3d8_handle)
     {
-        trace("Could not load d3d8.dll, skipping tests\n");
+        skip("Could not load d3d8.dll\n");
         return;
     }
 

dlls/d3d8/tests/texture.c

@@ -110,7 +110,7 @@ START_TEST(texture)
     d3d8_handle = LoadLibraryA("d3d8.dll");
     if (!d3d8_handle)
     {
-        trace("Could not load d3d8.dll, skipping tests\n");
+        skip("Could not load d3d8.dll\n");
         return;
     }
 

dlls/d3d8/tests/volume.c

@@ -129,7 +129,7 @@ START_TEST(volume)
     d3d8_handle = LoadLibraryA("d3d8.dll");
     if (!d3d8_handle)
     {
-        trace("Could not load d3d8.dll, skipping tests\n");
+        skip("Could not load d3d8.dll\n");
         return;
     }