12 files changed, 335 insertions, 271 deletions

diff --git a/indra/llwindow/llopenglview-objc.mm b/indra/llwindow/llopenglview-objc.mm
index 268afe843d..bdb5d8def0 100644
--- a/indra/llwindow/llopenglview-objc.mm
+++ b/indra/llwindow/llopenglview-objc.mm
@@ -125,7 +125,7 @@ attributedStringInfo getSegments(NSAttributedString *str)
 - (unsigned long)getVramSize
 {
     CGLRendererInfoObj info = 0;
-	GLint vram_megabytes = 0;
+    GLint vram_megabytes = 0;
     int num_renderers = 0;
     CGLError the_err = CGLQueryRendererInfo (CGDisplayIDToOpenGLDisplayMask(kCGDirectMainDisplay), &info, &num_renderers);
     if(0 == the_err)
@@ -143,7 +143,7 @@ attributedStringInfo getSegments(NSAttributedString *str)
         vram_megabytes = 256;
     }
 
-	return (unsigned long)vram_megabytes; // return value is in megabytes.
+    return (unsigned long)vram_megabytes; // return value is in megabytes.
 }
 
 - (void)viewWillMoveToWindow:(nullable NSWindow *)newWindow
@@ -164,24 +164,24 @@ attributedStringInfo getSegments(NSAttributedString *str)
 
 - (void)viewDidMoveToWindow
 {
-	[[NSNotificationCenter defaultCenter] addObserver:self
-											 selector:@selector(windowResized:) name:NSWindowDidResizeNotification
-											   object:[self window]];
+    [[NSNotificationCenter defaultCenter] addObserver:self
+                                             selector:@selector(windowResized:) name:NSWindowDidResizeNotification
+                                               object:[self window]];
 
     [[NSNotificationCenter defaultCenter] addObserver:self
-											 selector:@selector(windowWillMiniaturize:) name:NSWindowWillMiniaturizeNotification
-											   object:[self window]];
+                                             selector:@selector(windowWillMiniaturize:) name:NSWindowWillMiniaturizeNotification
+                                               object:[self window]];
 
     [[NSNotificationCenter defaultCenter] addObserver:self
-											 selector:@selector(windowDidDeminiaturize:) name:NSWindowDidDeminiaturizeNotification
-											   object:[self window]];
+                                             selector:@selector(windowDidDeminiaturize:) name:NSWindowDidDeminiaturizeNotification
+                                               object:[self window]];
 
     [[NSNotificationCenter defaultCenter] addObserver:self
-											 selector:@selector(windowDidBecomeKey:) name:NSWindowDidBecomeKeyNotification
-											   object:[self window]];
-	[[NSNotificationCenter defaultCenter] addObserver:self
-											 selector:@selector(windowDidChangeScreen:) name:NSWindowDidChangeScreenNotification
-											   object:[self window]];
+                                             selector:@selector(windowDidBecomeKey:) name:NSWindowDidBecomeKeyNotification
+                                               object:[self window]];
+    [[NSNotificationCenter defaultCenter] addObserver:self
+                                             selector:@selector(windowDidChangeScreen:) name:NSWindowDidChangeScreenNotification
+                                               object:[self window]];
 
 
     NSRect wnd_rect = [[self window] frame];
@@ -215,28 +215,28 @@ attributedStringInfo getSegments(NSAttributedString *str)
 
 -(void)windowDidChangeScreen:(NSNotification *)notification;
 {
-	callWindowDidChangeScreen();
+    callWindowDidChangeScreen();
 }
 
 - (void)dealloc
 {
-	[[NSNotificationCenter defaultCenter] removeObserver:self];
-	[super dealloc];
+    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [super dealloc];
 }
 
 - (id) init
 {
-	return [self initWithFrame:[self bounds] withSamples:2 andVsync:TRUE];
+    return [self initWithFrame:[self bounds] withSamples:2 andVsync:TRUE];
 }
 
 - (id) initWithSamples:(NSUInteger)samples
 {
-	return [self initWithFrame:[self bounds] withSamples:samples andVsync:TRUE];
+    return [self initWithFrame:[self bounds] withSamples:samples andVsync:TRUE];
 }
 
 - (id) initWithSamples:(NSUInteger)samples andVsync:(BOOL)vsync
 {
-	return [self initWithFrame:[self bounds] withSamples:samples andVsync:vsync];
+    return [self initWithFrame:[self bounds] withSamples:samples andVsync:vsync];
 }
 
 #if LL_DARWIN
@@ -248,21 +248,21 @@ attributedStringInfo getSegments(NSAttributedString *str)
 - (id) initWithFrame:(NSRect)frame withSamples:(NSUInteger)samples andVsync:(BOOL)vsync
 {
     [self registerForDraggedTypes:[NSArray arrayWithObject:NSPasteboardTypeURL]];
-	[self initWithFrame:frame];
+    [self initWithFrame:frame];
 
-	// Initialize with a default "safe" pixel format that will work with versions dating back to OS X 10.6.
-	// Any specialized pixel formats, i.e. a core profile pixel format, should be initialized through rebuildContextWithFormat.
-	// 10.7 and 10.8 don't really care if we're defining a profile or not.  If we don't explicitly request a core or legacy profile, it'll always assume a legacy profile (for compatibility reasons).
+    // Initialize with a default "safe" pixel format that will work with versions dating back to OS X 10.6.
+    // Any specialized pixel formats, i.e. a core profile pixel format, should be initialized through rebuildContextWithFormat.
+    // 10.7 and 10.8 don't really care if we're defining a profile or not.  If we don't explicitly request a core or legacy profile, it'll always assume a legacy profile (for compatibility reasons).
 
-	NSOpenGLPixelFormatAttribute SDRAttrs[] = {
+    NSOpenGLPixelFormatAttribute SDRAttrs[] = {
         NSOpenGLPFANoRecovery,
-		NSOpenGLPFADoubleBuffer,
-		NSOpenGLPFAClosestPolicy,
-		NSOpenGLPFAAccelerated,
-		NSOpenGLPFADepthSize, 24,
-		NSOpenGLPFAColorSize, 32,
-		NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion4_1Core,
-		0
+        NSOpenGLPFADoubleBuffer,
+        NSOpenGLPFAClosestPolicy,
+        NSOpenGLPFAAccelerated,
+        NSOpenGLPFADepthSize, 24,
+        NSOpenGLPFAColorSize, 32,
+        NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion4_1Core,
+        0
     };
 
     NSOpenGLPixelFormatAttribute HDRAttrs[] = {
@@ -298,21 +298,21 @@ attributedStringInfo getSegments(NSAttributedString *str)
         pixelFormat = [[[NSOpenGLPixelFormat alloc] initWithAttributes:SDRAttrs] autorelease];
     }
 
-	if (pixelFormat == nil)
-	{
-		NSLog(@"Failed to create pixel format!", nil);
-		return nil;
-	}
+    if (pixelFormat == nil)
+    {
+        NSLog(@"Failed to create pixel format!", nil);
+        return nil;
+    }
 
-	glContext = [[NSOpenGLContext alloc] initWithFormat:pixelFormat shareContext:nil];
+    glContext = [[NSOpenGLContext alloc] initWithFormat:pixelFormat shareContext:nil];
 
-	if (glContext == nil)
-	{
-		NSLog(@"Failed to create OpenGL context!", nil);
-		return nil;
-	}
+    if (glContext == nil)
+    {
+        NSLog(@"Failed to create OpenGL context!", nil);
+        return nil;
+    }
 
-	[self setPixelFormat:pixelFormat];
+    [self setPixelFormat:pixelFormat];
 
     if(mHDRDisplay)
     {
@@ -327,55 +327,55 @@ attributedStringInfo getSegments(NSAttributedString *str)
         NSLog(@"Extended color space applied for HDR Display", nil);
     }
 
-	//for retina support
-	[self setWantsBestResolutionOpenGLSurface:gHiDPISupport];
+    //for retina support
+    [self setWantsBestResolutionOpenGLSurface:gHiDPISupport];
 
-	[self setOpenGLContext:glContext];
+    [self setOpenGLContext:glContext];
 
-	[glContext setView:self];
+    [glContext setView:self];
 
-	[glContext makeCurrentContext];
+    [glContext makeCurrentContext];
 
-	if (vsync)
-	{
-		GLint value = 1;
+    if (vsync)
+    {
+        GLint value = 1;
         [glContext setValues:&value forParameter:NSOpenGLContextParameterSwapInterval];
-	} else {
-		// supress this error after move to Xcode 7:
-		// error: null passed to a callee that requires a non-null argument [-Werror,-Wnonnull]
-		// Tried using ObjC 'nonnull' keyword as per SO article but didn't build
-		GLint swapInterval=0;
+    } else {
+        // supress this error after move to Xcode 7:
+        // error: null passed to a callee that requires a non-null argument [-Werror,-Wnonnull]
+        // Tried using ObjC 'nonnull' keyword as per SO article but didn't build
+        GLint swapInterval=0;
         [glContext setValues:&swapInterval forParameter:NSOpenGLContextParameterSwapInterval];
-	}
+    }
 
     GLint opacity = 1;
     [glContext setValues:&opacity forParameter:NSOpenGLCPSurfaceOpacity];
 
-	return self;
+    return self;
 }
 
 - (BOOL) rebuildContext
 {
-	return [self rebuildContextWithFormat:[self pixelFormat]];
+    return [self rebuildContextWithFormat:[self pixelFormat]];
 }
 
 - (BOOL) rebuildContextWithFormat:(NSOpenGLPixelFormat *)format
 {
-	NSOpenGLContext *ctx = [self openGLContext];
+    NSOpenGLContext *ctx = [self openGLContext];
 
-	[ctx clearDrawable];
-	[ctx initWithFormat:format shareContext:nil];
+    [ctx clearDrawable];
+    [ctx initWithFormat:format shareContext:nil];
 
-	if (ctx == nil)
-	{
-		NSLog(@"Failed to create OpenGL context!", nil);
-		return false;
-	}
+    if (ctx == nil)
+    {
+        NSLog(@"Failed to create OpenGL context!", nil);
+        return false;
+    }
 
-	[self setOpenGLContext:ctx];
-	[ctx setView:self];
-	[ctx makeCurrentContext];
-	return true;
+    [self setOpenGLContext:ctx];
+    [ctx setView:self];
+    [ctx makeCurrentContext];
+    return true;
 }
 
 #if LL_DARWIN
@@ -384,14 +384,14 @@ attributedStringInfo getSegments(NSAttributedString *str)
 
 - (CGLContextObj)getCGLContextObj
 {
-	NSOpenGLContext *ctx = [self openGLContext];
-	return (CGLContextObj)[ctx CGLContextObj];
+    NSOpenGLContext *ctx = [self openGLContext];
+    return (CGLContextObj)[ctx CGLContextObj];
 }
 
 - (CGLPixelFormatObj*)getCGLPixelFormatObj
 {
-	NSOpenGLPixelFormat *fmt = [self pixelFormat];
-	return (CGLPixelFormatObj*)[fmt	CGLPixelFormatObj];
+    NSOpenGLPixelFormat *fmt = [self pixelFormat];
+    return (CGLPixelFormatObj*)[fmt CGLPixelFormatObj];
 }
 
 // Various events can be intercepted by our view, thus not reaching our window.
@@ -436,29 +436,29 @@ attributedStringInfo getSegments(NSAttributedString *str)
 
 - (void) rightMouseDown:(NSEvent *)theEvent
 {
-	callRightMouseDown(mMousePos, [theEvent modifierFlags]);
+    callRightMouseDown(mMousePos, [theEvent modifierFlags]);
 }
 
 - (void) rightMouseUp:(NSEvent *)theEvent
 {
-	callRightMouseUp(mMousePos, [theEvent modifierFlags]);
+    callRightMouseUp(mMousePos, [theEvent modifierFlags]);
 }
 
 - (void)mouseMoved:(NSEvent *)theEvent
 {
     NSPoint dev_delta = [self convertPointToBacking:NSMakePoint([theEvent deltaX], [theEvent deltaY])];
 
-	float mouseDeltas[] = {
-		float(dev_delta.x),
-		float(dev_delta.y)
-	};
+    float mouseDeltas[] = {
+        float(dev_delta.x),
+        float(dev_delta.y)
+    };
 
-	callDeltaUpdate(mouseDeltas, 0);
+    callDeltaUpdate(mouseDeltas, 0);
 
     NSPoint mPoint = [self convertPointToBacking:[theEvent locationInWindow]];
-	mMousePos[0] = mPoint.x;
-	mMousePos[1] = mPoint.y;
-	callMouseMoved(mMousePos, 0);
+    mMousePos[0] = mPoint.x;
+    mMousePos[1] = mPoint.y;
+    callMouseMoved(mMousePos, 0);
 }
 
 // NSWindow doesn't trigger mouseMoved when the mouse is being clicked and dragged.
@@ -466,23 +466,23 @@ attributedStringInfo getSegments(NSAttributedString *str)
 
 - (void) mouseDragged:(NSEvent *)theEvent
 {
-	// Trust the deltas supplied by NSEvent.
-	// The old CoreGraphics APIs we previously relied on are now flagged as obsolete.
-	// NSEvent isn't obsolete, and provides us with the correct deltas.
+    // Trust the deltas supplied by NSEvent.
+    // The old CoreGraphics APIs we previously relied on are now flagged as obsolete.
+    // NSEvent isn't obsolete, and provides us with the correct deltas.
 
     NSPoint dev_delta = [self convertPointToBacking:NSMakePoint([theEvent deltaX], [theEvent deltaY])];
 
-	float mouseDeltas[] = {
-		float(dev_delta.x),
-		float(dev_delta.y)
-	};
+    float mouseDeltas[] = {
+        float(dev_delta.x),
+        float(dev_delta.y)
+    };
 
-	callDeltaUpdate(mouseDeltas, 0);
+    callDeltaUpdate(mouseDeltas, 0);
 
-	NSPoint mPoint = [self convertPointToBacking:[theEvent locationInWindow]];
-	mMousePos[0] = mPoint.x;
-	mMousePos[1] = mPoint.y;
-	callMouseDragged(mMousePos, 0);
+    NSPoint mPoint = [self convertPointToBacking:[theEvent locationInWindow]];
+    mMousePos[0] = mPoint.x;
+    mMousePos[1] = mPoint.y;
+    callMouseDragged(mMousePos, 0);
 }
 
 - (void) otherMouseDown:(NSEvent *)theEvent
@@ -497,29 +497,29 @@ attributedStringInfo getSegments(NSAttributedString *str)
 
 - (void) rightMouseDragged:(NSEvent *)theEvent
 {
-	[self mouseDragged:theEvent];
+    [self mouseDragged:theEvent];
 }
 
 - (void) otherMouseDragged:(NSEvent *)theEvent
 {
-	[self mouseDragged:theEvent];
+    [self mouseDragged:theEvent];
 }
 
 - (void) scrollWheel:(NSEvent *)theEvent
 {
-	callScrollMoved(-[theEvent deltaX], -[theEvent deltaY]);
+    callScrollMoved(-[theEvent deltaX], -[theEvent deltaY]);
 }
 
 - (void) mouseExited:(NSEvent *)theEvent
 {
-	callMouseExit();
+    callMouseExit();
 }
 
 - (void) keyUp:(NSEvent *)theEvent
 {
     NativeKeyEventData eventData = extractKeyDataFromKeyEvent(theEvent);
     eventData.mKeyEvent = NativeKeyEventData::KEYUP;
-	callKeyUp(&eventData, [theEvent keyCode], [theEvent modifierFlags]);
+    callKeyUp(&eventData, [theEvent keyCode], [theEvent modifierFlags]);
 }
 
 - (void) keyDown:(NSEvent *)theEvent
@@ -533,7 +533,7 @@ attributedStringInfo getSegments(NSAttributedString *str)
     // Because flagsChange event handler misses event when other window is activated,
     // e.g. OS Window for upload something or Input Window...
     // mModifiers instance variable is for insertText: or insertText:replacementRange:  (by Pell Smit)
-	mModifiers = [theEvent modifierFlags];
+    mModifiers = [theEvent modifierFlags];
     NSString *str_no_modifiers = [theEvent charactersIgnoringModifiers];
     unichar ch = 0;
     if (str_no_modifiers.length)
@@ -561,8 +561,8 @@ attributedStringInfo getSegments(NSAttributedString *str)
 {
     NativeKeyEventData eventData = extractKeyDataFromModifierEvent(theEvent);
 
-	mModifiers = [theEvent modifierFlags];
-	callModifier([theEvent modifierFlags]);
+    mModifiers = [theEvent modifierFlags];
+    callModifier([theEvent modifierFlags]);
 
     NSInteger mask = 0;
     switch([theEvent keyCode])
@@ -603,69 +603,69 @@ attributedStringInfo getSegments(NSAttributedString *str)
 
 - (BOOL) acceptsFirstResponder
 {
-	return YES;
+    return YES;
 }
 
 - (NSDragOperation) draggingEntered:(id<NSDraggingInfo>)sender
 {
-	NSPasteboard *pboard;
+    NSPasteboard *pboard;
     NSDragOperation sourceDragMask;
 
-	sourceDragMask = [sender draggingSourceOperationMask];
+    sourceDragMask = [sender draggingSourceOperationMask];
 
-	pboard = [sender draggingPasteboard];
+    pboard = [sender draggingPasteboard];
 
     if ([[pboard types] containsObject:NSPasteboardTypeURL])
-	{
-		if (sourceDragMask & NSDragOperationLink) {
-			NSURL *fileUrl = [[pboard readObjectsForClasses:[NSArray arrayWithObject:[NSURL class]] options:[NSDictionary dictionary]] objectAtIndex:0];
-			mLastDraggedUrl = [[fileUrl absoluteString] UTF8String];
+    {
+        if (sourceDragMask & NSDragOperationLink) {
+            NSURL *fileUrl = [[pboard readObjectsForClasses:[NSArray arrayWithObject:[NSURL class]] options:[NSDictionary dictionary]] objectAtIndex:0];
+            mLastDraggedUrl = [[fileUrl absoluteString] UTF8String];
             return NSDragOperationLink;
         }
-	}
-	return NSDragOperationNone;
+    }
+    return NSDragOperationNone;
 }
 
 - (NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)sender
 {
-	callHandleDragUpdated(mLastDraggedUrl);
+    callHandleDragUpdated(mLastDraggedUrl);
 
-	return NSDragOperationLink;
+    return NSDragOperationLink;
 }
 
 - (void) draggingExited:(id<NSDraggingInfo>)sender
 {
-	callHandleDragExited(mLastDraggedUrl);
+    callHandleDragExited(mLastDraggedUrl);
 }
 
 - (BOOL)prepareForDragOperation:(id < NSDraggingInfo >)sender
 {
-	return YES;
+    return YES;
 }
 
 - (BOOL) performDragOperation:(id<NSDraggingInfo>)sender
 {
-	callHandleDragDropped(mLastDraggedUrl);
-	return true;
+    callHandleDragDropped(mLastDraggedUrl);
+    return true;
 }
 
 - (BOOL)hasMarkedText
 {
-	return mHasMarkedText;
+    return mHasMarkedText;
 }
 
 - (NSRange)markedRange
 {
-	int range[2];
-	getPreeditMarkedRange(&range[0], &range[1]);
-	return NSMakeRange(range[0], range[1]);
+    int range[2];
+    getPreeditMarkedRange(&range[0], &range[1]);
+    return NSMakeRange(range[0], range[1]);
 }
 
 - (NSRange)selectedRange
 {
-	int range[2];
-	getPreeditSelectionRange(&range[0], &range[1]);
-	return NSMakeRange(range[0], range[1]);
+    int range[2];
+    getPreeditSelectionRange(&range[0], &range[1]);
+    return NSMakeRange(range[0], range[1]);
 }
 
 - (void)setMarkedText:(id)aString selectedRange:(NSRange)selectedRange replacementRange:(NSRange)replacementRange
@@ -751,21 +751,21 @@ attributedStringInfo getSegments(NSAttributedString *str)
 
 - (void)unmarkText
 {
-	[[self inputContext] discardMarkedText];
-	resetPreedit();
-	mHasMarkedText = FALSE;
+    [[self inputContext] discardMarkedText];
+    resetPreedit();
+    mHasMarkedText = FALSE;
 }
 
 // We don't support attributed strings.
 - (NSArray *)validAttributesForMarkedText
 {
-	return [NSArray array];
+    return [NSArray array];
 }
 
 // See above.
 - (NSAttributedString *)attributedSubstringForProposedRange:(NSRange)aRange actualRange:(NSRangePointer)actualRange
 {
-	return nil;
+    return nil;
 }
 
 - (void)insertText:(id)insertString
@@ -778,9 +778,9 @@ attributedStringInfo getSegments(NSAttributedString *str)
 
 - (void)insertText:(id)aString replacementRange:(NSRange)replacementRange
 {
-	// SL-19801 Special workaround for system emoji picker
-	if ([aString length] == 2)
-	{
+    // SL-19801 Special workaround for system emoji picker
+    if ([aString length] == 2)
+    {
         @try
         {
             uint32_t b0 = [aString characterAtIndex:0];
@@ -798,7 +798,7 @@ attributedStringInfo getSegments(NSAttributedString *str)
             NSLog(@"Encountered an unsupported attributed character. Exception: %@ String: %@", e.name, aString);
             return;
         }
-	}
+    }
 
     @try
     {
@@ -831,36 +831,36 @@ attributedStringInfo getSegments(NSAttributedString *str)
     if (!(mModifiers & NSEventModifierFlagCommand) &&
         !(mModifiers & NSEventModifierFlagShift) &&
         !(mModifiers & NSEventModifierFlagOption))
-	{
-		callUnicodeCallback(13, 0);
-	} else {
-		callUnicodeCallback(13, mModifiers);
-	}
+    {
+        callUnicodeCallback(13, 0);
+    } else {
+        callUnicodeCallback(13, mModifiers);
+    }
 }
 
 - (NSUInteger)characterIndexForPoint:(NSPoint)aPoint
 {
-	return NSNotFound;
+    return NSNotFound;
 }
 
 - (NSRect)firstRectForCharacterRange:(NSRange)aRange actualRange:(NSRangePointer)actualRange
 {
-	float pos[4] = {0, 0, 0, 0};
-	getPreeditLocation(pos, mMarkedTextLength);
-	return NSMakeRect(pos[0], pos[1], pos[2], pos[3]);
+    float pos[4] = {0, 0, 0, 0};
+    getPreeditLocation(pos, mMarkedTextLength);
+    return NSMakeRect(pos[0], pos[1], pos[2], pos[3]);
 }
 
 - (void)doCommandBySelector:(SEL)aSelector
 {
-	if (aSelector == @selector(insertNewline:))
-	{
-		[self insertNewline:self];
-	}
+    if (aSelector == @selector(insertNewline:))
+    {
+        [self insertNewline:self];
+    }
 }
 
 - (BOOL)drawsVerticallyForCharacterAtIndex:(NSUInteger)charIndex
 {
-	return NO;
+    return NO;
 }
 
 - (void) allowMarkedTextInput:(bool)allowed
@@ -895,7 +895,7 @@ attributedStringInfo getSegments(NSAttributedString *str)
 
 - (void) setGLView:(LLOpenGLView *)view
 {
-	glview = view;
+    glview = view;
 }
 
 - (void)keyDown:(NSEvent *)theEvent
@@ -946,24 +946,24 @@ attributedStringInfo getSegments(NSAttributedString *str)
 
 - (id) init
 {
-	return self;
+    return self;
 }
 
 - (BOOL) becomeFirstResponder
 {
-	callFocus();
-	return true;
+    callFocus();
+    return true;
 }
 
 - (BOOL) resignFirstResponder
 {
-	callFocusLost();
-	return true;
+    callFocusLost();
+    return true;
 }
 
 - (void) close
 {
-	callQuitHandler();
+    callQuitHandler();
 }
 
 @end
diff --git a/indra/llwindow/llwindow.h b/indra/llwindow/llwindow.h
index 8f8ea7fdb6..d63927d23d 100644
--- a/indra/llwindow/llwindow.h
+++ b/indra/llwindow/llwindow.h
@@ -95,6 +95,7 @@ public:
 #if LL_WINDOWS && !LL_SDL
     virtual bool getCursorDelta(LLCoordCommon* delta) = 0;
 #endif
+    virtual bool isWrapMouse() const = 0;
     virtual void showCursor() = 0;
     virtual void hideCursor() = 0;
     virtual bool isCursorHidden() = 0;
diff --git a/indra/llwindow/llwindowcallbacks.cpp b/indra/llwindow/llwindowcallbacks.cpp
index 195f68e08b..7331f50ba0 100644
--- a/indra/llwindow/llwindowcallbacks.cpp
+++ b/indra/llwindow/llwindowcallbacks.cpp
@@ -68,7 +68,13 @@ void LLWindowCallbacks::handleMouseLeave(LLWindow *window)
     return;
 }
 
-bool LLWindowCallbacks::handleCloseRequest(LLWindow *window)
+bool LLWindowCallbacks::handleCloseRequest(LLWindow *window, bool from_user)
+{
+    //allow the window to close
+    return true;
+}
+
+bool LLWindowCallbacks::handleSessionExit(LLWindow* window)
 {
     //allow the window to close
     return true;
diff --git a/indra/llwindow/llwindowcallbacks.h b/indra/llwindow/llwindowcallbacks.h
index d812f93524..59dcdd3ade 100644
--- a/indra/llwindow/llwindowcallbacks.h
+++ b/indra/llwindow/llwindowcallbacks.h
@@ -42,7 +42,8 @@ public:
     virtual bool handleMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask);
     virtual void handleMouseLeave(LLWindow *window);
     // return true to allow window to close, which will then cause handleQuit to be called
-    virtual bool handleCloseRequest(LLWindow *window);
+    virtual bool handleCloseRequest(LLWindow *window, bool from_user);
+    virtual bool handleSessionExit(LLWindow* window);
     // window is about to be destroyed, clean up your business
     virtual void handleQuit(LLWindow *window);
     virtual bool handleRightMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
diff --git a/indra/llwindow/llwindowheadless.h b/indra/llwindow/llwindowheadless.h
index acec401133..0a1ecb05e0 100644
--- a/indra/llwindow/llwindowheadless.h
+++ b/indra/llwindow/llwindowheadless.h
@@ -63,6 +63,7 @@ public:
 #if LL_WINDOWS && !LL_SDL
     /*virtual*/ bool getCursorDelta(LLCoordCommon* delta) override { return false; }
 #endif
+    /*virtual*/ bool isWrapMouse() const override { return true; }
     /*virtual*/ void showCursor() override {}
     /*virtual*/ void hideCursor() override {}
     /*virtual*/ void showCursorFromMouseMove() override {}
diff --git a/indra/llwindow/llwindowmacosx-objc.mm b/indra/llwindow/llwindowmacosx-objc.mm
index 42cd95be5d..d902a82a3c 100644
--- a/indra/llwindow/llwindowmacosx-objc.mm
+++ b/indra/llwindow/llwindowmacosx-objc.mm
@@ -41,15 +41,15 @@
 
 int createNSApp(int argc, const char *argv[])
 {
-	return NSApplicationMain(argc, argv);
+    return NSApplicationMain(argc, argv);
 }
 
 void setupCocoa()
 {
-	static bool inited = false;
-	
-	if(!inited)
-	{
+    static bool inited = false;
+
+    if(!inited)
+    {
         @autoreleasepool {
             // The following prevents the Cocoa command line parser from trying to open 'unknown' arguements as documents.
             // ie. running './secondlife -set Language fr' would cause a pop-up saying can't open document 'fr'
@@ -57,8 +57,8 @@ void setupCocoa()
             [[NSUserDefaults standardUserDefaults] setObject:@"NO" forKey:@"NSTreatUnknownArgumentsAsOpen"];
         }
 
-		inited = true;
-	}
+        inited = true;
+    }
 }
 
 bool copyToPBoard(const unsigned short *str, unsigned int len)
@@ -66,7 +66,7 @@ bool copyToPBoard(const unsigned short *str, unsigned int len)
     @autoreleasepool {
         NSPasteboard *pboard = [NSPasteboard generalPasteboard];
         [pboard clearContents];
-        
+
         NSArray *contentsToPaste = [[[NSArray alloc] initWithObjects:[NSString stringWithCharacters:str length:len], nil] autorelease];
         return [pboard writeObjects:contentsToPaste];
     }
@@ -74,8 +74,8 @@ bool copyToPBoard(const unsigned short *str, unsigned int len)
 
 bool pasteBoardAvailable()
 {
-	NSArray *classArray = [NSArray arrayWithObject:[NSString class]];
-	return [[NSPasteboard generalPasteboard] canReadObjectForClasses:classArray options:[NSDictionary dictionary]];
+    NSArray *classArray = [NSArray arrayWithObject:[NSString class]];
+    return [[NSPasteboard generalPasteboard] canReadObjectForClasses:classArray options:[NSDictionary dictionary]];
 }
 
 unsigned short *copyFromPBoard()
@@ -111,55 +111,55 @@ CursorRef createImageCursor(const char *fullpath, int hotspotX, int hotspotY)
           hotSpot:NSMakePoint(hotspotX, hotspotY)
          ] retain];
     }
-	
-	return (CursorRef)cursor;
+
+    return (CursorRef)cursor;
 }
 
 void setArrowCursor()
 {
-	NSCursor *cursor = [NSCursor arrowCursor];
-	[NSCursor unhide];
-	[cursor set];
+    NSCursor *cursor = [NSCursor arrowCursor];
+    [NSCursor unhide];
+    [cursor set];
 }
 
 void setIBeamCursor()
 {
-	NSCursor *cursor = [NSCursor IBeamCursor];
-	[cursor set];
+    NSCursor *cursor = [NSCursor IBeamCursor];
+    [cursor set];
 }
 
 void setPointingHandCursor()
 {
-	NSCursor *cursor = [NSCursor pointingHandCursor];
-	[cursor set];
+    NSCursor *cursor = [NSCursor pointingHandCursor];
+    [cursor set];
 }
 
 void setCopyCursor()
 {
-	NSCursor *cursor = [NSCursor dragCopyCursor];
-	[cursor set];
+    NSCursor *cursor = [NSCursor dragCopyCursor];
+    [cursor set];
 }
 
 void setCrossCursor()
 {
-	NSCursor *cursor = [NSCursor crosshairCursor];
-	[cursor set];
+    NSCursor *cursor = [NSCursor crosshairCursor];
+    [cursor set];
 }
 
 void setNotAllowedCursor()
 {
-	NSCursor *cursor = [NSCursor operationNotAllowedCursor];
-	[cursor set];
+    NSCursor *cursor = [NSCursor operationNotAllowedCursor];
+    [cursor set];
 }
 
 void hideNSCursor()
 {
-	[NSCursor hide];
+    [NSCursor hide];
 }
 
 void showNSCursor()
 {
-	[NSCursor unhide];
+    [NSCursor unhide];
 }
 
 #if LL_DARWIN
@@ -179,42 +179,42 @@ bool isCGCursorVisible()
 
 void hideNSCursorTillMove(bool hide)
 {
-	[NSCursor setHiddenUntilMouseMoves:hide];
+    [NSCursor setHiddenUntilMouseMoves:hide];
 }
 
 // This is currently unused, since we want all our cursors to persist for the life of the app, but I've included it for completeness.
 OSErr releaseImageCursor(CursorRef ref)
 {
-	if( ref != NULL )
-	{
+    if( ref != NULL )
+    {
         @autoreleasepool {
             NSCursor *cursor = (NSCursor*)ref;
             [cursor autorelease];
         }
-	}
-	else
-	{
-		return paramErr;
-	}
-	
-	return noErr;
+    }
+    else
+    {
+        return paramErr;
+    }
+
+    return noErr;
 }
 
 OSErr setImageCursor(CursorRef ref)
 {
-	if( ref != NULL )
-	{
+    if( ref != NULL )
+    {
         @autoreleasepool {
             NSCursor *cursor = (NSCursor*)ref;
             [cursor set];
         }
-	}
-	else
-	{
-		return paramErr;
-	}
-	
-	return noErr;
+    }
+    else
+    {
+        return paramErr;
+    }
+
+    return noErr;
 }
 
 // Now for some unholy juggling between generic pointers and casting them to Obj-C objects!
@@ -222,46 +222,46 @@ OSErr setImageCursor(CursorRef ref)
 
 NSWindowRef createNSWindow(int x, int y, int width, int height)
 {
-	LLNSWindow *window = [[LLNSWindow alloc]initWithContentRect:NSMakeRect(x, y, width, height)
+    LLNSWindow *window = [[LLNSWindow alloc]initWithContentRect:NSMakeRect(x, y, width, height)
                                                       styleMask:NSWindowStyleMaskTitled | NSWindowStyleMaskResizable | NSWindowStyleMaskClosable | NSWindowStyleMaskMiniaturizable
                                                         backing:NSBackingStoreBuffered defer:NO];
-	[window makeKeyAndOrderFront:nil];
-	[window setAcceptsMouseMovedEvents:TRUE];
+    [window makeKeyAndOrderFront:nil];
+    [window setAcceptsMouseMovedEvents:TRUE];
     [window setRestorable:FALSE]; // Viewer manages state from own settings
-	return window;
+    return window;
 }
 
 GLViewRef createOpenGLView(NSWindowRef window, unsigned int samples, bool vsync)
 {
-	LLOpenGLView *glview = [[LLOpenGLView alloc]initWithFrame:[(LLNSWindow*)window frame] withSamples:samples andVsync:vsync];
-	[(LLNSWindow*)window setContentView:glview];
-	return glview;
+    LLOpenGLView *glview = [[LLOpenGLView alloc]initWithFrame:[(LLNSWindow*)window frame] withSamples:samples andVsync:vsync];
+    [(LLNSWindow*)window setContentView:glview];
+    return glview;
 }
 
 void glSwapBuffers(void* context)
 {
-	[(NSOpenGLContext*)context flushBuffer];
+    [(NSOpenGLContext*)context flushBuffer];
 }
 
 CGLContextObj getCGLContextObj(GLViewRef view)
 {
-	return [(LLOpenGLView *)view getCGLContextObj];
+    return [(LLOpenGLView *)view getCGLContextObj];
 }
 
 CGLPixelFormatObj* getCGLPixelFormatObj(NSWindowRef window)
 {
-	LLOpenGLView *glview = [(LLNSWindow*)window contentView];
-	return [glview getCGLPixelFormatObj];
+    LLOpenGLView *glview = [(LLNSWindow*)window contentView];
+    return [glview getCGLPixelFormatObj];
 }
 
 unsigned long getVramSize(GLViewRef view)
 {
-	return [(LLOpenGLView *)view getVramSize];
+    return [(LLOpenGLView *)view getVramSize];
 }
 
 float getDeviceUnitSize(GLViewRef view)
 {
-	return [(LLOpenGLView*)view convertSizeToBacking:NSMakeSize(1, 1)].width;
+    return [(LLOpenGLView*)view convertSizeToBacking:NSMakeSize(1, 1)].width;
 }
 
 CGRect getContentViewRect(NSWindowRef window)
@@ -276,48 +276,48 @@ CGRect getBackingViewRect(NSWindowRef window, GLViewRef view)
 
 void getWindowSize(NSWindowRef window, float* size)
 {
-	NSRect frame = [(LLNSWindow*)window frame];
-	size[0] = frame.origin.x;
-	size[1] = frame.origin.y;
-	size[2] = frame.size.width;
-	size[3] = frame.size.height;
+    NSRect frame = [(LLNSWindow*)window frame];
+    size[0] = frame.origin.x;
+    size[1] = frame.origin.y;
+    size[2] = frame.size.width;
+    size[3] = frame.size.height;
 }
 
 void setWindowSize(NSWindowRef window, int width, int height)
 {
-	NSRect frame = [(LLNSWindow*)window frame];
-	frame.size.width = width;
-	frame.size.height = height;
-	[(LLNSWindow*)window setFrame:frame display:TRUE];
+    NSRect frame = [(LLNSWindow*)window frame];
+    frame.size.width = width;
+    frame.size.height = height;
+    [(LLNSWindow*)window setFrame:frame display:TRUE];
 }
 
 void setWindowPos(NSWindowRef window, float* pos)
 {
-	NSPoint point;
-	point.x = pos[0];
-	point.y = pos[1];
-	[(LLNSWindow*)window setFrameOrigin:point];
+    NSPoint point;
+    point.x = pos[0];
+    point.y = pos[1];
+    [(LLNSWindow*)window setFrameOrigin:point];
 }
 
 void getCursorPos(NSWindowRef window, float* pos)
 {
-	NSPoint mLoc;
-	mLoc = [(LLNSWindow*)window mouseLocationOutsideOfEventStream];
-	pos[0] = mLoc.x;
-	pos[1] = mLoc.y;
+    NSPoint mLoc;
+    mLoc = [(LLNSWindow*)window mouseLocationOutsideOfEventStream];
+    pos[0] = mLoc.x;
+    pos[1] = mLoc.y;
 }
 
 void makeWindowOrderFront(NSWindowRef window)
 {
-	[(LLNSWindow*)window makeKeyAndOrderFront:nil];
+    [(LLNSWindow*)window makeKeyAndOrderFront:nil];
 }
 
 void convertScreenToWindow(NSWindowRef window, float *coord)
 {
     NSRect point = NSMakeRect(coord[0], coord[1], 0,0);
-	point = [(LLNSWindow*)window convertRectFromScreen:point];
-	coord[0] = point.origin.x;
-	coord[1] = point.origin.y;
+    point = [(LLNSWindow*)window convertRectFromScreen:point];
+    coord[0] = point.origin.x;
+    coord[1] = point.origin.y;
 }
 
 void convertRectToScreen(NSWindowRef window, float *coord)
@@ -325,21 +325,21 @@ void convertRectToScreen(NSWindowRef window, float *coord)
     NSRect rect = NSMakeRect(coord[0], coord[1], coord[2], coord[3]);;
     rect = [(LLNSWindow*)window convertRectToScreen:rect];
 
-	coord[0] = rect.origin.x;
-	coord[1] = rect.origin.y;
-	coord[2] = rect.size.width;
-	coord[3] = rect.size.height;
+    coord[0] = rect.origin.x;
+    coord[1] = rect.origin.y;
+    coord[2] = rect.size.width;
+    coord[3] = rect.size.height;
 }
 
 void convertRectFromScreen(NSWindowRef window, float *coord)
 {
-	NSRect point = NSMakeRect(coord[0], coord[1], coord[2], coord[3]);
-	point = [(LLNSWindow*)window convertRectFromScreen:point];
-	
-	coord[0] = point.origin.x;
-	coord[1] = point.origin.y;
-	coord[2] = point.size.width;
-	coord[3] = point.size.height;
+    NSRect point = NSMakeRect(coord[0], coord[1], coord[2], coord[3]);
+    point = [(LLNSWindow*)window convertRectFromScreen:point];
+
+    coord[0] = point.origin.x;
+    coord[1] = point.origin.y;
+    coord[2] = point.size.width;
+    coord[3] = point.size.height;
 }
 
 void convertWindowToScreen(NSWindowRef window, float *coord)
@@ -353,24 +353,24 @@ void convertWindowToScreen(NSWindowRef window, float *coord)
 
 void closeWindow(NSWindowRef window)
 {
-	[(LLNSWindow*)window close];
-	[(LLNSWindow*)window release];
+    [(LLNSWindow*)window close];
+    [(LLNSWindow*)window release];
 }
 
 void removeGLView(GLViewRef view)
 {
-	[(LLOpenGLView*)view clearGLContext];
-	[(LLOpenGLView*)view removeFromSuperview];
+    [(LLOpenGLView*)view clearGLContext];
+    [(LLOpenGLView*)view removeFromSuperview];
 }
 
 void setupInputWindow(NSWindowRef window, GLViewRef glview)
 {
-	[[(LLAppDelegate*)[NSApp delegate] inputView] setGLView:(LLOpenGLView*)glview];
+    [[(LLAppDelegate*)[NSApp delegate] inputView] setGLView:(LLOpenGLView*)glview];
 }
 
 void commitCurrentPreedit(GLViewRef glView)
 {
-	[(LLOpenGLView*)glView commitCurrentPreedit];
+    [(LLOpenGLView*)glView commitCurrentPreedit];
 }
 
 void allowDirectMarkedTextInput(bool allow, GLViewRef glView)
@@ -380,20 +380,20 @@ void allowDirectMarkedTextInput(bool allow, GLViewRef glView)
 
 NSWindowRef getMainAppWindow()
 {
-	LLNSWindow *winRef = [(LLAppDelegate*)[[NSApplication sharedApplication] delegate] window];
-	
-	[winRef setAcceptsMouseMovedEvents:TRUE];
-	return winRef;
+    LLNSWindow *winRef = [(LLAppDelegate*)[[NSApplication sharedApplication] delegate] window];
+
+    [winRef setAcceptsMouseMovedEvents:TRUE];
+    return winRef;
 }
 
 void makeFirstResponder(NSWindowRef window, GLViewRef view)
 {
-	[(LLNSWindow*)window makeFirstResponder:(LLOpenGLView*)view];
+    [(LLNSWindow*)window makeFirstResponder:(LLOpenGLView*)view];
 }
 
 void requestUserAttention()
 {
-	[[NSApplication sharedApplication] requestUserAttention:NSInformationalRequest];
+    [[NSApplication sharedApplication] requestUserAttention:NSInformationalRequest];
 }
 
 long showAlert(std::string text, std::string title, int type)
@@ -401,7 +401,7 @@ long showAlert(std::string text, std::string title, int type)
     long ret = 0;
     @autoreleasepool {
         NSAlert *alert = [[[NSAlert alloc] init] autorelease];
-        
+
         [alert setMessageText:[NSString stringWithCString:title.c_str() encoding:[NSString defaultCStringEncoding]]];
         [alert setInformativeText:[NSString stringWithCString:text.c_str() encoding:[NSString defaultCStringEncoding]]];
         if (type == 0)
@@ -418,7 +418,7 @@ long showAlert(std::string text, std::string title, int type)
         }
         ret = [alert runModal];
     }
-    
+
     if (ret == NSAlertFirstButtonReturn)
     {
         if (type == 1)
@@ -438,7 +438,7 @@ long showAlert(std::string text, std::string title, int type)
             ret = 1;
         }
     }
-    
+
     return ret;
 }
 
@@ -451,5 +451,5 @@ long showAlert(std::string text, std::string title, int type)
 
 unsigned int getModifiers()
 {
-	return [NSEvent modifierFlags];
+    return [NSEvent modifierFlags];
 }
diff --git a/indra/llwindow/llwindowmacosx.cpp b/indra/llwindow/llwindowmacosx.cpp
index 4a4b2658f6..0bf1c4b057 100644
--- a/indra/llwindow/llwindowmacosx.cpp
+++ b/indra/llwindow/llwindowmacosx.cpp
@@ -613,7 +613,7 @@ void callQuitHandler()
 {
     if (gWindowImplementation && gWindowImplementation->getCallbacks())
     {
-        if(gWindowImplementation->getCallbacks()->handleCloseRequest(gWindowImplementation))
+        if(gWindowImplementation->getCallbacks()->handleCloseRequest(gWindowImplementation, true))
         {
             gWindowImplementation->getCallbacks()->handleQuit(gWindowImplementation);
         }
diff --git a/indra/llwindow/llwindowmacosx.h b/indra/llwindow/llwindowmacosx.h
index 110c5756d0..d703a84d02 100644
--- a/indra/llwindow/llwindowmacosx.h
+++ b/indra/llwindow/llwindowmacosx.h
@@ -63,6 +63,7 @@ public:
     bool switchContext(bool fullscreen, const LLCoordScreen &size, bool enable_vsync, const LLCoordScreen * const posp = NULL) override;
     bool setCursorPosition(LLCoordWindow position) override;
     bool getCursorPosition(LLCoordWindow *position) override;
+    bool isWrapMouse() const override { return !mCursorDecoupled; };
     void showCursor() override;
     void hideCursor() override;
     void showCursorFromMouseMove() override;
diff --git a/indra/llwindow/llwindowsdl.cpp b/indra/llwindow/llwindowsdl.cpp
index 0a117be1fc..ad40dea0c3 100644
--- a/indra/llwindow/llwindowsdl.cpp
+++ b/indra/llwindow/llwindowsdl.cpp
@@ -1722,7 +1722,7 @@ void LLWindowSDL::gatherInput()
                 break;
             }
             case SDL_QUIT:
-                if(mCallbacks->handleCloseRequest(this))
+                if(mCallbacks->handleCloseRequest(this, true))
                 {
                     // Get the app to initiate cleanup.
                     mCallbacks->handleQuit(this);
diff --git a/indra/llwindow/llwindowsdl.h b/indra/llwindow/llwindowsdl.h
index 076d7234bc..d9b6be5fdc 100644
--- a/indra/llwindow/llwindowsdl.h
+++ b/indra/llwindow/llwindowsdl.h
@@ -91,6 +91,8 @@ public:
 
     bool getCursorPosition(LLCoordWindow *position) override;
 
+    bool isWrapMouse() const override { return true; }
+
     void showCursor() override;
 
     void hideCursor() override;
diff --git a/indra/llwindow/llwindowwin32.cpp b/indra/llwindow/llwindowwin32.cpp
index cfc2038be9..5471e1c87a 100644
--- a/indra/llwindow/llwindowwin32.cpp
+++ b/indra/llwindow/llwindowwin32.cpp
@@ -450,6 +450,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
                              F32 max_gl_version)
     :
     LLWindow(callbacks, fullscreen, flags),
+    mAbsoluteCursorPosition(false),
     mMaxGLVersion(max_gl_version),
     mMaxCores(max_cores)
 {
@@ -2466,10 +2467,13 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
         case WM_CLOSE:
         {
             LL_PROFILE_ZONE_NAMED_CATEGORY_WIN32("mwp - WM_CLOSE");
+            // todo: WM_CLOSE can be caused by user and by task manager,
+            // distinguish these cases.
+            // For now assume it is always user.
             window_imp->post([=]()
                 {
                     // Will the app allow the window to close?
-                    if (window_imp->mCallbacks->handleCloseRequest(window_imp))
+                    if (window_imp->mCallbacks->handleCloseRequest(window_imp, true))
                     {
                         // Get the app to initiate cleanup.
                         window_imp->mCallbacks->handleQuit(window_imp);
@@ -2487,6 +2491,50 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
             }
             return 0;
         }
+        case WM_QUERYENDSESSION:
+        {
+            // Generally means that OS is going to shut down or user is going to log off.
+            // Can use ShutdownBlockReasonCreate here.
+            LL_INFOS("Window") << "Received WM_QUERYENDSESSION with wParam: " << (U32)w_param << " lParam: " << (U32)l_param << LL_ENDL;
+            return TRUE; // 1 = ok to end session. 0 no longer works by itself, use ShutdownBlockReasonCreate
+        }
+        case WM_ENDSESSION:
+        {
+            // OS session is shutting down, initiate cleanup.
+            // Comes after WM_QUERYENDSESSION
+            LL_PROFILE_ZONE_NAMED_CATEGORY_WIN32("mwp - WM_ENDSESSION");
+            LL_INFOS("Window") << "Received WM_ENDSESSION with wParam: " << (U32)w_param << " lParam: " << (U32)l_param << LL_ENDL;
+            unsigned int end_session_flags = (U32)w_param;
+            if (end_session_flags == 0)
+            {
+                // session is not actually ending
+                return 0;
+            }
+
+            if ((end_session_flags & ENDSESSION_CLOSEAPP)
+                || (end_session_flags & ENDSESSION_CRITICAL)
+                || (end_session_flags & ENDSESSION_LOGOFF))
+            {
+                window_imp->post([=]()
+                {
+                    // Check if app needs cleanup or can be closed immediately.
+                    if (window_imp->mCallbacks->handleSessionExit(window_imp))
+                    {
+                        // Get the app to initiate cleanup.
+                        window_imp->mCallbacks->handleQuit(window_imp);
+                        // The app is responsible for calling destroyWindow when done with GL
+                    }
+                });
+                // Give app a second to finish up. That's not enough for a clean exit,
+                // but better than nothing.
+                // Todo: sync this better, some kind of waitForResult? Can't wait forever,
+                // but can potentially use ShutdownBlockReasonCreate for a bigger delay.
+                ms_sleep(1000);
+            }
+            // Don't need to post quit or destroy window,
+            // if session is ending OS is going to take care of it.
+            return 0;
+        }
         case WM_COMMAND:
         {
             LL_PROFILE_ZONE_NAMED_CATEGORY_WIN32("mwp - WM_COMMAND");
@@ -3111,6 +3159,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
 
                         prev_absolute_x = absolute_x;
                         prev_absolute_y = absolute_y;
+                        window_imp->mAbsoluteCursorPosition = true;
                     }
                     else
                     {
@@ -3127,6 +3176,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                             window_imp->mRawMouseDelta.mX += (S32)round((F32)raw->data.mouse.lLastX * (F32)speed / DEFAULT_SPEED);
                             window_imp->mRawMouseDelta.mY -= (S32)round((F32)raw->data.mouse.lLastY * (F32)speed / DEFAULT_SPEED);
                         }
+                        window_imp->mAbsoluteCursorPosition = false;
                     }
                 }
             }
diff --git a/indra/llwindow/llwindowwin32.h b/indra/llwindow/llwindowwin32.h
index 7196706f87..0fc93ad0b1 100644
--- a/indra/llwindow/llwindowwin32.h
+++ b/indra/llwindow/llwindowwin32.h
@@ -70,6 +70,7 @@ public:
     /*virtual*/ bool setCursorPosition(LLCoordWindow position);
     /*virtual*/ bool getCursorPosition(LLCoordWindow *position);
     /*virtual*/ bool getCursorDelta(LLCoordCommon* delta);
+    /*virtual*/ bool isWrapMouse() const override { return !mAbsoluteCursorPosition; };
     /*virtual*/ void showCursor();
     /*virtual*/ void hideCursor();
     /*virtual*/ void showCursorFromMouseMove();
@@ -195,6 +196,7 @@ protected:
 
     HCURSOR     mCursor[ UI_CURSOR_COUNT ];  // Array of all mouse cursors
     LLCoordWindow mCursorPosition;  // mouse cursor position, should only be mutated on main thread
+    bool        mAbsoluteCursorPosition; // true if last position was received in absolute coordinates.
     LLMutex mRawMouseMutex;
     RAWINPUTDEVICE mRawMouse;
     LLCoordWindow mLastCursorPosition; // mouse cursor position from previous frame