fix shadowsglitch by bounds overflow

Signed-off-by: Bret Curtis <psi29a@gmail.com>

components/terrain/quadtreenode.cpp

@@ -171,8 +171,6 @@ void QuadTreeNode::setBoundingBox(const osg::BoundingBox &boundingBox)
 {
     mBoundingBox = boundingBox;
     mValidBounds = boundingBox.valid();
-    dirtyBound();
-    getBound();
 }
 
 const osg::BoundingBox &QuadTreeNode::getBoundingBox() const
@@ -180,11 +178,6 @@ const osg::BoundingBox &QuadTreeNode::getBoundingBox() const
     return mBoundingBox;
 }
 
-osg::BoundingSphere QuadTreeNode::computeBound() const
-{
-    return osg::BoundingSphere(mBoundingBox);
-}
-
 float QuadTreeNode::getSize() const
 {
     return mSize;

components/terrain/quadtreenode.hpp

@@ -91,8 +91,6 @@ namespace Terrain
         const osg::BoundingBox& getBoundingBox() const;
         bool hasValidBounds() const { return mValidBounds; }
 
-        virtual osg::BoundingSphere computeBound() const;
-
         /// size in cell coordinates
         float getSize() const;
 

components/terrain/quadtreeworld.cpp

@@ -140,6 +140,8 @@ public:
         addChildren(mRootNode);
 
         mRootNode->initNeighbours();
+        float cellWorldSize = mStorage->getCellWorldSize();
+        mRootNode->setInitialBound(osg::BoundingSphere(osg::BoundingBox(osg::Vec3(mMinX*cellWorldSize, mMinY*cellWorldSize, 0), osg::Vec3(mMaxX*cellWorldSize, mMaxY*cellWorldSize, 0))));
     }
 
     void addChildren(QuadTreeNode* parent)

files/settings-default.cfg

@@ -826,8 +826,8 @@ enable debug hud = false
 # Enable the debug overlay to see where each shadow map affects.
 enable debug overlay = false
 
-# Attempt to better use the shadow map by making them cover a smaller area. May have a minor to major performance impact.
-compute tight scene bounds = true
+# Attempt to better use the shadow map by making them cover a smaller area. May have a major performance impact.
+compute tight scene bounds = false
 
 # How large to make the shadow map(s). Higher values increase GPU load, but can produce better-looking results. Power-of-two values may turn out to be faster on some GPU/driver combinations.
 shadow map resolution = 1024