diff --git a/include/osg/Camera b/include/osg/Camera
index b1d5b538f..5c733e2b8 100644
--- a/include/osg/Camera
+++ b/include/osg/Camera
@@ -84,7 +84,7 @@ class OSG_EXPORT Camera : public Transform, public CullSettings
 
         /** Set the clear mask used in glClear(..).
           * Defaults to GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT. */
-        inline void setClearMask(GLbitfield mask) { _clearMask = mask; }
+        inline void setClearMask(GLbitfield mask) { _clearMask = mask; applyMaskAction(CLEAR_MASK); }
 
         /** Get the clear mask.*/
         inline GLbitfield getClearMask() const { return _clearMask; }
diff --git a/include/osg/CullSettings b/include/osg/CullSettings
index 617f7251a..b0da3ad57 100644
--- a/include/osg/CullSettings
+++ b/include/osg/CullSettings
@@ -58,24 +58,25 @@ class OSG_EXPORT CullSettings
         
         enum VariablesMask
         {
-            COMPUTE_NEAR_FAR_MODE                   = 0x00000001,
-            CULLING_MODE                            = 0x00000002,
-            LOD_SCALE                               = 0x00000004,
-            SMALL_FEATURE_CULLING_PIXEL_SIZE        = 0x00000008,
-            CLAMP_PROJECTION_MATRIX_CALLBACK        = 0x00000010,
-            NEAR_FAR_RATIO                          = 0x00000020,
-            IMPOSTOR_ACTIVE                         = 0x00000040,
-            DEPTH_SORT_IMPOSTOR_SPRITES             = 0x00000080,
-            IMPOSTOR_PIXEL_ERROR_THRESHOLD          = 0x00000100,
-            NUM_FRAMES_TO_KEEP_IMPOSTORS_SPRITES    = 0x00000200,
-            CULL_MASK                               = 0x00000400,
-            CULL_MASK_LEFT                          = 0x00000800,
-            CULL_MASK_RIGHT                         = 0x00001000,
-            CLEAR_COLOR                             = 0x00002000,
-            LIGHTING_MODE                           = 0x00004000,
-            LIGHT                                   = 0x00008000,
-            DRAW_BUFFER                             = 0x00010000,
-            READ_BUFFER                             = 0x00020000,
+            COMPUTE_NEAR_FAR_MODE                   = (0x1 << 0),
+            CULLING_MODE                            = (0x1 << 1),
+            LOD_SCALE                               = (0x1 << 2),
+            SMALL_FEATURE_CULLING_PIXEL_SIZE        = (0x1 << 3),
+            CLAMP_PROJECTION_MATRIX_CALLBACK        = (0x1 << 4),
+            NEAR_FAR_RATIO                          = (0x1 << 5),
+            IMPOSTOR_ACTIVE                         = (0x1 << 6),
+            DEPTH_SORT_IMPOSTOR_SPRITES             = (0x1 << 7),
+            IMPOSTOR_PIXEL_ERROR_THRESHOLD          = (0x1 << 8),
+            NUM_FRAMES_TO_KEEP_IMPOSTORS_SPRITES    = (0x1 << 9),
+            CULL_MASK                               = (0x1 << 10),
+            CULL_MASK_LEFT                          = (0x1 << 11),
+            CULL_MASK_RIGHT                         = (0x1 << 12),
+            CLEAR_COLOR                             = (0x1 << 13),
+            CLEAR_MASK                              = (0x1 << 14),
+            LIGHTING_MODE                           = (0x1 << 15),
+            LIGHT                                   = (0x1 << 16),
+            DRAW_BUFFER                             = (0x1 << 17),
+            READ_BUFFER                             = (0x1 << 18),
 
             NO_VARIABLES                            = 0x00000000,
             ALL_VARIABLES                           = 0xFFFFFFFF
diff --git a/src/osg/Camera.cpp b/src/osg/Camera.cpp
index 487fb1256..94c74d0a2 100644
--- a/src/osg/Camera.cpp
+++ b/src/osg/Camera.cpp
@@ -397,6 +397,9 @@ void Camera::inheritCullSettings(const CullSettings& settings, unsigned int inhe
         if (inheritanceMask & CLEAR_COLOR)
             _clearColor = camera->_clearColor;
 
+        if (inheritanceMask & CLEAR_MASK)
+            _clearMask = camera->_clearMask;
+
         if (inheritanceMask & DRAW_BUFFER)
             _drawBuffer = camera->_drawBuffer;
 
diff --git a/src/osgUtil/CullVisitor.cpp b/src/osgUtil/CullVisitor.cpp
index 5d5c891c4..2b5870c5e 100644
--- a/src/osgUtil/CullVisitor.cpp
+++ b/src/osgUtil/CullVisitor.cpp
@@ -1304,6 +1304,14 @@ void CullVisitor::apply(osg::Camera& camera)
         {
             rtts->setClearColor(camera.getClearColor());
         }
+        if (camera.getInheritanceMask() & CLEAR_MASK)
+        {
+            rtts->setClearMask(previous_stage->getClearMask());
+        }
+        else
+        {
+            rtts->setClearMask(camera.getClearMask());
+        }
 
         
         // set the color mask.