Here is a list of all enum values with links to the classes they belong to:

### - u -

- UByteArrayType : osg::Array
- UInt64ArrayType : osg::Array
- UIntArrayType : osg::Array
- UL : osgWidget::Widget
- UNASSIGNED : osgDB::XmlNode
- UNCONSTRAINED : osg::CameraView
- UNDEFINED : osg::Shader, osg::Uniform
- UNDEFINED_DOMAIN : osgParticle::DomainOperator::Domain
- UNIFORMBUFFERBINDING : osg::StateAttribute
- UNINITIALISED : osgDB::Field
- UNION_OF_BOUNDING_SPHERE_AND_USER_DEFINED : osg::LOD, osg::ProxyNode
- UNKNOWN : osgGA::Device, osgGA::GUIEventAdapter, osgSim::ShapeAttribute
- UNSIGNED_INT : osg::Uniform
- UNSIGNED_INT64 : osg::Uniform
- UNSIGNED_INT_IMAGE_1D : osg::Uniform
- UNSIGNED_INT_IMAGE_1D_ARRAY : osg::Uniform
- UNSIGNED_INT_IMAGE_2D : osg::Uniform
- UNSIGNED_INT_IMAGE_2D_ARRAY : osg::Uniform
- UNSIGNED_INT_IMAGE_2D_MULTISAMPLE : osg::Uniform
- UNSIGNED_INT_IMAGE_2D_MULTISAMPLE_ARRAY : osg::Uniform
- UNSIGNED_INT_IMAGE_2D_RECT : osg::Uniform
- UNSIGNED_INT_IMAGE_3D : osg::Uniform
- UNSIGNED_INT_IMAGE_BUFFER : osg::Uniform
- UNSIGNED_INT_IMAGE_CUBE : osg::Uniform
- UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY : osg::Uniform
- UNSIGNED_INT_PARAMETER : osg::ArgumentParser::Parameter
- UNSIGNED_INT_SAMPLER_1D : osg::Uniform
- UNSIGNED_INT_SAMPLER_1D_ARRAY : osg::Uniform
- UNSIGNED_INT_SAMPLER_2D : osg::Uniform
- UNSIGNED_INT_SAMPLER_2D_ARRAY : osg::Uniform
- UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE : osg::Uniform
- UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY : osg::Uniform
- UNSIGNED_INT_SAMPLER_2D_RECT : osg::Uniform
- UNSIGNED_INT_SAMPLER_3D : osg::Uniform
- UNSIGNED_INT_SAMPLER_BUFFER : osg::Uniform
- UNSIGNED_INT_SAMPLER_CUBE : osg::Uniform
- UNSIGNED_INT_SAMPLER_CUBE_MAP_ARRAY : osg::Uniform
- UNSIGNED_INT_VEC2 : osg::Uniform
- UNSIGNED_INT_VEC3 : osg::Uniform
- UNSIGNED_INT_VEC4 : osg::Uniform
- UNSIGNED_INTEGER : osg::Texture
- UNSPECIFIED : osg::Object
- UPDATE_MODEL_SIZE : osgGA::StandardManipulator
- UPDATE_SCRIPT : osgPresentation::SlideShowConstructor
- UPDATE_VISITOR : osg::NodeVisitor
- UpDownCursor : osgViewer::GraphicsWindow
- UPPER_LEFT : osg::ClipControl, osg::PointSprite, osgWidget::Widget
- UPPER_RIGHT : osgWidget::Widget
- UR : osgWidget::Widget
- USE_ARB_COMPRESSION : osg::Texture
- USE_BOUNDING_SPHERE_CENTER : osg::LOD, osg::ProxyNode
- USE_CPU : osgDB::ImageProcessor
- USE_DISPLAY_LISTS : osgDB::DatabasePager
- USE_DISPLAY_SETTINGS_MASK : osg::Camera
- USE_DOUBLE_CALCULATIONS : osgUtil::Intersector
- USE_ETC2_COMPRESSION : osg::Texture
- USE_ETC_COMPRESSION : osg::Texture
- USE_EYE_POINT_FOR_LOD_LEVEL_SELECTION : osgUtil::IntersectionVisitor
- USE_FLOAT_CALCULATIONS : osgUtil::Intersector
- USE_FUSION_DISTANCE_VALUE : osgUtil::SceneView
- USE_GPU : osgDB::ImageProcessor
- USE_HIGHEST_LEVEL_OF_DETAIL : osgUtil::IntersectionVisitor, osgUtil::IntersectVisitor
- USE_IMAGE_ALPHA : osgPresentation::SlideShowConstructor::ImageData
- USE_IMAGE_DATA_FORMAT : osg::Texture
- USE_MALLOC_FREE : osg::Image
- USE_MANUAL_SETTINGS : osg::Shader
- USE_MOUSE_BUTTONS_FOR_SPEED : osgGA::DriveManipulator
- USE_MOUSE_X_POSITION : osgPresentation::SlideShowConstructor::ImageData
- USE_MOUSE_Y_FOR_SPEED : osgGA::DriveManipulator
- USE_MOUSE_Y_POSITION : osgPresentation::SlideShowConstructor::ImageData
- USE_NEW_DELETE : osg::Image
- USE_PVRTC_2BPP_COMPRESSION : osg::Texture
- USE_PVRTC_4BPP_COMPRESSION : osg::Texture
- USE_RENDERBIN_DETAILS : osg::StateSet
- USE_RGTC1_COMPRESSION : osg::Texture
- USE_RGTC2_COMPRESSION : osg::Texture
- USE_S3TC_DXT1_COMPRESSION : osg::Texture
- USE_S3TC_DXT1a_COMPRESSION : osg::Texture
- USE_S3TC_DXT1c_COMPRESSION : osg::Texture
- USE_S3TC_DXT3_COMPRESSION : osg::Texture
- USE_S3TC_DXT5_COMPRESSION : osg::Texture
- USE_SEGMENT_START_POINT_AS_EYE_POINT_FOR_LOD_LEVEL_SELECTION : osgUtil::IntersectVisitor
- USE_SHADER_PRAGMA : osg::Shader
- USE_SHAPE_DEFAULTS : osg::TessellationHints
- USE_TARGET_NUM_FACES : osg::TessellationHints
- USE_USER_DEFINED_FORMAT : osg::Texture
- USE_VERTEX_ARRAYS : osgDB::DatabasePager
- USE_VERTEX_BUFFER_OBJECTS : osgDB::DatabasePager
- USER : osgGA::GUIEventAdapter, osgParticle::Particle
- USER_DEFINED : osg::OcclusionQueryNode
- USER_DEFINED_CENTER : osg::LOD, osg::ProxyNode
- USER_DEFINED_ROTATION : osgText::TextBase
- UShortArrayType : osg::Array