5 files changed, 15 insertions, 8 deletions
diff --git a/indra/llwindow/CMakeLists.txt b/indra/llwindow/CMakeLists.txt
index 6b70d66d7a..ce9134e7f1 100644
--- a/indra/llwindow/CMakeLists.txt
+++ b/indra/llwindow/CMakeLists.txt
@@ -17,6 +17,7 @@ include(LLImage)
 include(LLWindow)
 include(UI)
 include(ViewerMiscLibs)
+include(GLM)
 
 set(llwindow_SOURCE_FILES
     llcursortypes.cpp
@@ -53,7 +54,7 @@ set(llwindow_LINK_LIBRARIES
         llmath
         llfilesystem
         llxml
-        ll::glh_linear
+        ll::glm
         ll::glext
         ll::uilibraries
         ll::SDL
diff --git a/indra/llwindow/lldragdropwin32.h b/indra/llwindow/lldragdropwin32.h
index 1b30dced27..16d016677b 100644
--- a/indra/llwindow/lldragdropwin32.h
+++ b/indra/llwindow/lldragdropwin32.h
@@ -31,7 +31,7 @@
 #ifndef LL_LLDRAGDROP32_H
 #define LL_LLDRAGDROP32_H
 
-#include "llwin32headerslean.h"
+#include "llwin32headers.h"
 #include <ole2.h>
 
 class LLDragDropWin32
@@ -54,7 +54,7 @@ class LLDragDropWin32
 #ifndef LL_LLDRAGDROP32_H
 #define LL_LLDRAGDROP32_H
 
-#include "llwin32headerslean.h"
+#include "llwin32headers.h"
 #include <ole2.h>
 
 // impostor class that does nothing
diff --git a/indra/llwindow/llkeyboardwin32.cpp b/indra/llwindow/llkeyboardwin32.cpp
index ec0055fe60..8d6b8d9b93 100644
--- a/indra/llwindow/llkeyboardwin32.cpp
+++ b/indra/llwindow/llkeyboardwin32.cpp
@@ -28,7 +28,7 @@
 
 #include "linden_common.h"
 
-#include "llwin32headerslean.h"
+#include "llwin32headers.h"
 #include "llkeyboardwin32.h"
 
 #include "llwindowcallbacks.h"
diff --git a/indra/llwindow/llwindowwin32.cpp b/indra/llwindow/llwindowwin32.cpp
index 9dc2644650..a48bd35765 100644
--- a/indra/llwindow/llwindowwin32.cpp
+++ b/indra/llwindow/llwindowwin32.cpp
@@ -1619,9 +1619,11 @@ const   S32   max_format  = (S32)num_formats - 1;
     }
     else
     {
-        LLError::LLUserWarningMsg::show(mCallbacks->translateString("MBVideoDrvErr"));
-        // mWindowHandle is 0, going to crash either way
-        LL_ERRS("Window") << "No wgl_ARB_pixel_format extension!" << LL_ENDL;
+        LL_WARNS("Window") << "No wgl_ARB_pixel_format extension!" << LL_ENDL;
+        // cannot proceed without wgl_ARB_pixel_format extension, shutdown same as any other gGLManager.initGL() failure
+        OSMessageBox(mCallbacks->translateString("MBVideoDrvErr"), mCallbacks->translateString("MBError"), OSMB_OK);
+        close();
+        return false;
     }
 
     // Verify what pixel format we actually received.
@@ -3699,6 +3701,10 @@ S32 OSMessageBoxWin32(const std::string& text, const std::string& caption, U32 t
     //
     // "This is why I'm doing it this way, instead of what you would think would be more obvious..."
     // (C) Nat Goodspeed
+    if (!IsWindow(sWindowHandleForMessageBox))
+    {
+        sWindowHandleForMessageBox = NULL;
+    }
     int retval_win = MessageBoxW(sWindowHandleForMessageBox, // HWND
                                  ll_convert_string_to_wide(text).c_str(),
                                  ll_convert_string_to_wide(caption).c_str(),
diff --git a/indra/llwindow/llwindowwin32.h b/indra/llwindow/llwindowwin32.h
index 287402faa0..36e89e4586 100644
--- a/indra/llwindow/llwindowwin32.h
+++ b/indra/llwindow/llwindowwin32.h
@@ -28,7 +28,7 @@
 #define LL_LLWINDOWWIN32_H
 
 // Limit Windows API to small and manageable set.
-#include "llwin32headerslean.h"
+#include "llwin32headers.h"
 
 #include "llwindow.h"
 #include "llwindowcallbacks.h"