Introduced OpenThreads::Affinity support into osg::Camera, osg::GraphicsContext::Traitse, osgDB::DatabasePager and osgViewer::ViewerBase/Viewer/CompositeViewer.

Added ViewerBase::configureAffinity() to help with the setting of the affinity of camera, graphics context and pager threads

src/osg/Camera.cpp

@@ -74,6 +74,7 @@ Camera::Camera(const Camera& camera,const CopyOp& copyop):
     _implicitBufferAttachmentRenderMask(camera._implicitBufferAttachmentRenderMask),
     _implicitBufferAttachmentResolveMask(camera._implicitBufferAttachmentResolveMask),
     _attachmentMapModifiedCount(camera._attachmentMapModifiedCount),
+    _affinity(camera._affinity),
     _initialDrawCallback(camera._initialDrawCallback),
     _preDrawCallback(camera._preDrawCallback),
     _postDrawCallback(camera._postDrawCallback),
@@ -521,6 +522,12 @@ void Camera::resize(int width, int height, int resizeMask)
     }
 }
 
+void Camera::setProcessorAffinity(const OpenThreads::Affinity& affinity)
+{
+    _affinity = affinity;
+
+    if (_cameraThread.valid()) _cameraThread->setProcessorAffinity(affinity);
+}
 
 void Camera::createCameraThread()
 {
@@ -543,6 +550,8 @@ void Camera::setCameraThread(OperationThread* gt)
 
     _cameraThread = gt;
 
+    _cameraThread->setProcessorAffinity(_affinity);
+
     if (_cameraThread.valid())
     {
         _cameraThread->setParent(this);

src/osg/GraphicsContext.cpp

@@ -589,6 +589,11 @@ void GraphicsContext::createGraphicsThread()
     if (!_graphicsThread)
     {
         setGraphicsThread(new GraphicsThread);
+
+        if (_traits.valid())
+        {
+            _graphicsThread->setProcessorAffinity(_traits->affinity);
+        }
     }
 }