ddraw: Add validation and tests for DDBLT_ROP.

dlls/ddraw/surface.c

@@ -1539,6 +1539,12 @@ static HRESULT WINAPI ddraw_surface7_Blt(IDirectDrawSurface7 *iface, RECT *DestR
 
     if (Flags & (DDBLT_COLORFILL | DDBLT_DEPTHFILL))
     {
+        if (Flags & DDBLT_ROP)
+        {
+            wined3d_mutex_unlock();
+            WARN("DDBLT_ROP used with DDBLT_COLORFILL or DDBLT_DEPTHFILL, returning DDERR_INVALIDPARAMS.\n");
+            return DDERR_INVALIDPARAMS;
+        }
         if (src_surface)
         {
             wined3d_mutex_unlock();
@@ -1569,6 +1575,16 @@ static HRESULT WINAPI ddraw_surface7_Blt(IDirectDrawSurface7 *iface, RECT *DestR
         }
     }
 
+    if (Flags & DDBLT_ROP)
+    {
+        if (!DDBltFx)
+        {
+            wined3d_mutex_unlock();
+            WARN("DDBLT_ROP used with DDBltFx = NULL, returning DDERR_INVALIDPARAMS.\n");
+            return DDERR_INVALIDPARAMS;
+        }
+    }
+
     if (Flags & DDBLT_KEYSRC && (!src_surface || !(src_surface->surface_desc.dwFlags & DDSD_CKSRCBLT)))
     {
         WARN("DDBLT_KEYDEST blit without color key in surface, returning DDERR_INVALIDPARAMS\n");