Józef Kucia : ddraw: Do not use unset viewport in viewport_activate().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ecad1995a0c13ec39673412adcc6f05e47ea51bc
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=ecad1995a0c13ec39673412ad...

Author: Józef Kucia 
Date:   Mon Nov 12 15:13:06 2018 +0100

ddraw: Do not use unset viewport in viewport_activate().

Signed-off-by: Józef Kucia 
Signed-off-by: Henri Verbeet 
Signed-off-by: Alexandre Julliard

---

dlls/ddraw/viewport.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dlls/ddraw/viewport.c b/dlls/ddraw/viewport.c
index 8cc60f1..e6f8621 100644
--- a/dlls/ddraw/viewport.c
+++ b/dlls/ddraw/viewport.c
@@ -68,6 +68,12 @@ void viewport_activate(struct d3d_viewport *This, BOOL ignore_lights)
         }
     }

+    if (This->version == DDRAW_VIEWPORT_VERSION_NONE)
+    {
+        TRACE("Viewport data was not set.\n");
+        return;
+    }
+
     /* And copy the values in the structure used by the device */
     if (This->version == DDRAW_VIEWPORT_VERSION_2)
     {