Detect when running on Windows Vista or later, and switch to 32 bpp

screen mode.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 2167

1 files changed, 21 insertions, 0 deletions

diff --git a/setup/configfile.c b/setup/configfile.c
index 885bbd8f..c4e8a408 100644
--- a/setup/configfile.c
+++ b/setup/configfile.c
@@ -768,5 +768,26 @@ void M_ApplyPlatformDefaults(void)
         }
     }
 #endif
+
+    // Windows Vista or later?  Set screen color depth to
+    // 32 bits per pixel, as 8-bit palettized screen modes
+    // don't work properly in recent versions.
+
+#if defined(_WIN32) && !defined(_WIN32_WCE)
+    {
+        OSVERSIONINFOEX version_info;
+
+        ZeroMemory(&version_info, sizeof(OSVERSIONINFOEX));
+        version_info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
+
+        GetVersionEx((OSVERSIONINFO *) &version_info);
+
+        if (version_info.dwPlatformId == VER_PLATFORM_WIN32_NT
+         && version_info.dwMajorVersion >= 6)
+        {
+            screen_bpp = 32;
+        }
+    }
+#endif
 }