Józef Kucia : wined3d: Do not copy surface region when empty box is passed.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: cd243969899b6c8a6531b18b63e5365c43dec487
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=cd243969899b6c8a6531b18b63...

Author: Józef Kucia <jkucia(a)codeweavers.com>
Date:   Tue Jan 19 22:28:10 2016 +0100

wined3d: Do not copy surface region when empty box is passed.

Signed-off-by: Józef Kucia <jkucia(a)codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/wined3d/device.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/dlls/wined3d/device.c b/dlls/wined3d/device.c
index 87221c3..c058881 100644
--- a/dlls/wined3d/device.c
+++ b/dlls/wined3d/device.c
@@ -4004,6 +4004,14 @@ HRESULT CDECL wined3d_device_copy_sub_resource_region(struct wined3d_device *dev
 
     if (src_box)
     {
+        if (src_box->front >= src_box->back)
+        {
+            WARN("Invalid box (%u, %u, %u)->(%u, %u, %u) specified.\n",
+                    src_box->left, src_box->top, src_box->front,
+                    src_box->right, src_box->bottom, src_box->back);
+            return WINED3DERR_INVALIDCALL;
+        }
+
         src_rect.left = src_box->left;
         src_rect.top = src_box->top;
         src_rect.right = src_box->right;