add preset for vermeer

inc/config.h

@@ -90,6 +90,7 @@ typedef struct CNCDDRAWCONFIG
     BOOL infantryhack;
     BOOL stronghold_hack;
     BOOL mgs_hack;
+    BOOL vermeer_hack;
 
 } CNCDDRAWCONFIG;
 

src/config.c

@@ -104,6 +104,7 @@ void cfg_load()
     GET_BOOL(g_config.infantryhack, "infantryhack", FALSE);
     GET_BOOL(g_config.stronghold_hack, "stronghold_hack", FALSE);
     GET_BOOL(g_config.mgs_hack, "mgs_hack", FALSE);
+    GET_BOOL(g_config.vermeer_hack, "vermeer_hack", FALSE);
 
     GameHandlesClose = GameHandlesClose || g_config.infantryhack;
 
@@ -1028,6 +1029,10 @@ static void cfg_create_ini()
             "renderer=opengl\n"
             "adjmouse=true\n"
             "\n"
+            "; Vermeer\n"
+            "[vermeer]\n"
+            "vermeer_hack=true\n"
+            "\n"
             "; Wizardry 8\n"
             "[Wiz8]\n"
             "fixmousehook=true\n"

src/dd.c

@@ -1182,6 +1182,14 @@ HRESULT dd_SetCooperativeLevel(HWND hwnd, DWORD dwFlags)
         }
     }
 
+    if (dwFlags & DDSCL_NORMAL)
+    {
+        if (g_config.vermeer_hack)
+        {
+            dd_SetDisplayMode(640, 480, 16, 0);
+        }
+    }
+
     return DD_OK;
 }