Index: dll/directx/wine/wined3d/utils.c
===================================================================
--- dll/directx/wine/wined3d/utils.c	(revision 73820)
+++ dll/directx/wine/wined3d/utils.c	(working copy)
@@ -2447,10 +2447,12 @@
         }
         else
         {
-            max_log2 = wined3d_log2i(min(gl_info->limits.samples,
-                    sizeof(format->multisample_types) * 8));
-            for (i = 1; i <= max_log2; ++i)
-                format->multisample_types |= 1u << ((1u << i) - 1);
+            if (gl_info->limits.samples) {
+                max_log2 = wined3d_log2i(min(gl_info->limits.samples,
+                        sizeof(format->multisample_types) * 8));
+                for (i = 1; i <= max_log2; ++i)
+                    format->multisample_types |= 1u << ((1u << i) - 1);
+            }
         }
     }
 }