BulletSim: add parameters and functionality to specify the mesh

level of detail for large meshes.
Remove parameter and code for DetailLog (conditional logging into
   regular log file).

OpenSim/Region/Physics/BulletSPlugin/BSLinkset.cs

@@ -265,7 +265,6 @@ public class BSLinkset
             BSPrim childx = child;
             m_physicsScene.TaintedObject("AddChildToLinkset", delegate()
             {
-                // DebugLog("{0}: AddChildToLinkset: adding child {1} to {2}", LogHeader, child.LocalID, m_linksetRoot.LocalID);
                 // DetailLog("{0},AddChildToLinkset,taint,child={1}", m_linksetRoot.LocalID, child.LocalID);
                 PhysicallyLinkAChildToRoot(rootx, childx);     // build the physical binding between me and the child
             });
@@ -294,7 +293,6 @@ public class BSLinkset
             BSPrim childx = child;
             m_physicsScene.TaintedObject("RemoveChildFromLinkset", delegate()
             {
-                // DebugLog("{0}: RemoveChildFromLinkset: Removing constraint to {1}", LogHeader, child.LocalID);
                 // DetailLog("{0},RemoveChildFromLinkset,taint,child={1}", m_linksetRoot.LocalID, child.LocalID);
 
                 PhysicallyUnlinkAChildFromRoot(rootx, childx);
@@ -326,7 +324,6 @@ public class BSLinkset
 
         // create a constraint that allows no freedom of movement between the two objects
         // http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?t=4818
-        // DebugLog("{0}: CreateLinkset: Adding a constraint between root prim {1} and child prim {2}", LogHeader, LocalID, childPrim.LocalID);
         DetailLog("{0},PhysicallyLinkAChildToRoot,taint,root={1},child={2},rLoc={3},cLoc={4},midLoc={5}", 
             rootPrim.LocalID, rootPrim.LocalID, childPrim.LocalID, rootPrim.Position, childPrim.Position, midPoint);
         BS6DofConstraint constrain = new BS6DofConstraint(
@@ -350,7 +347,6 @@ public class BSLinkset
 
         // create a constraint that allows no freedom of movement between the two objects
         // http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?t=4818
-        // DebugLog("{0}: CreateLinkset: Adding a constraint between root prim {1} and child prim {2}", LogHeader, LocalID, childPrim.LocalID);
         DetailLog("{0},PhysicallyLinkAChildToRoot,taint,root={1},child={2}", rootPrim.LocalID, rootPrim.LocalID, childPrim.LocalID);
         BS6DofConstraint constrain = new BS6DofConstraint(
                         PhysicsScene.World, rootPrim.Body, childPrim.Body,
@@ -389,8 +385,6 @@ public class BSLinkset
     // Called at taint time!
     private void PhysicallyUnlinkAChildFromRoot(BSPrim rootPrim, BSPrim childPrim)
     {
-        // DebugLog("{0}: PhysicallyUnlinkAChildFromRoot: RemoveConstraint between root prim {1} and child prim {2}", 
-        //             LogHeader, rootPrim.LocalID, childPrim.LocalID);
         DetailLog("{0},PhysicallyUnlinkAChildFromRoot,taint,root={1},child={2}", rootPrim.LocalID, rootPrim.LocalID, childPrim.LocalID);
 
         // Find the constraint for this link and get rid of it from the overall collection and from my list
@@ -404,19 +398,11 @@ public class BSLinkset
     // Called at taint time!
     private void PhysicallyUnlinkAllChildrenFromRoot(BSPrim rootPrim)
     {
-        // DebugLog("{0}: PhysicallyUnlinkAllChildren:", LogHeader);
         DetailLog("{0},PhysicallyUnlinkAllChildren,taint", rootPrim.LocalID);
 
         m_physicsScene.Constraints.RemoveAndDestroyConstraint(rootPrim.Body);
     }
 
-    // Invoke the detailed logger and output something if it's enabled.
-    private void DebugLog(string msg, params Object[] args)
-    {
-        if (m_physicsScene.ShouldDebugLog)
-            m_physicsScene.Logger.DebugFormat(msg, args);
-    }
-
     // Invoke the detailed logger and output something if it's enabled.
     private void DetailLog(string msg, params Object[] args)
     {

OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs

@@ -42,8 +42,6 @@ public sealed class BSPrim : PhysicsActor
     private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
     private static readonly string LogHeader = "[BULLETS PRIM]";
 
-    private void DebugLog(string mm, params Object[] xx) { if (_scene.ShouldDebugLog) m_log.DebugFormat(mm, xx); }
-
     private IMesh _mesh;
     private PrimitiveBaseShape _pbs;
     private ShapeData.PhysicsShapeType _shapeType;
@@ -232,7 +230,6 @@ public sealed class BSPrim : PhysicsActor
         BSPrim parent = obj as BSPrim;
         if (parent != null)
         {
-            DebugLog("{0}: link {1}/{2} to {3}", LogHeader, _avName, _localID, parent.LocalID);
             BSPrim parentBefore = _linkset.LinksetRoot;
             int childrenBefore = _linkset.NumberOfChildren;
 
@@ -248,8 +245,6 @@ public sealed class BSPrim : PhysicsActor
     public override void delink() {
         // TODO: decide if this parent checking needs to happen at taint time
         // Race condition here: if link() and delink() in same simulation tick, the delink will not happen
-        DebugLog("{0}: delink {1}/{2}. Parent={3}", LogHeader, _avName, _localID, 
-                            _linkset.LinksetRoot._avName+"/"+_linkset.LinksetRoot.LocalID.ToString());
 
         BSPrim parentBefore = _linkset.LinksetRoot;
         int childrenBefore = _linkset.NumberOfChildren;
@@ -1042,7 +1037,14 @@ public sealed class BSPrim : PhysicsActor
     // No locking here because this is done when we know physics is not simulating
     private void CreateGeomMesh()
     {
-        float lod = _pbs.SculptEntry ? _scene.SculptLOD : _scene.MeshLOD;
+        // level of detail based on size and type of the object
+        float lod = _scene.MeshLOD;
+        if (_pbs.SculptEntry) 
+            lod = _scene.SculptLOD;
+        float maxAxis = Math.Max(_size.X, Math.Max(_size.Y, _size.Z));
+        if (maxAxis > _scene.MeshMegaPrimThreshold) 
+            lod = _scene.MeshMegaPrimLOD;
+
         ulong newMeshKey = (ulong)_pbs.GetMeshKey(_size, lod);
         // m_log.DebugFormat("{0}: CreateGeomMesh: lID={1}, oldKey={2}, newKey={3}", LogHeader, _localID, _meshKey, newMeshKey);
 

OpenSim/Region/Physics/BulletSPlugin/BSScene.cs

@@ -73,8 +73,6 @@ public class BSScene : PhysicsScene, IPhysicsParameters
     private static readonly ILog m_log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
     private static readonly string LogHeader = "[BULLETS SCENE]";
 
-    public void DebugLog(string mm, params Object[] xx) { if (ShouldDebugLog) m_log.DebugFormat(mm, xx); }
-
     public string BulletSimVersion = "?";
 
     private Dictionary<uint, BSCharacter> m_avatars = new Dictionary<uint, BSCharacter>();
@@ -101,16 +99,11 @@ public class BSScene : PhysicsScene, IPhysicsParameters
     private int m_detailedStatsStep = 0;
 
     public IMesher mesher;
-    private float m_meshLOD;
-    public float MeshLOD
-    {
-        get { return m_meshLOD; }
-    }
-    private float m_sculptLOD;
-    public float SculptLOD
-    {
-        get { return m_sculptLOD; }
-    }
+    // Level of Detail values kept as float because that's what the Meshmerizer wants
+    public float MeshLOD { get; private set; }
+    public float MeshMegaPrimLOD { get; private set; }
+    public float MeshMegaPrimThreshold { get; private set; }
+    public float SculptLOD { get; private set; }
 
     private BulletSim m_worldSim;
     public BulletSim World
@@ -185,8 +178,9 @@ public class BSScene : PhysicsScene, IPhysicsParameters
     ConfigurationParameters[] m_params;
     GCHandle m_paramsHandle;
 
-    public bool ShouldDebugLog { get; private set; }
-
+    // Handle to the callback used by the unmanaged code to call into the managed code.
+    // Used for debug logging.
+    // Need to store the handle in a persistant variable so it won't be freed.
     private BulletSimAPI.DebugLogCallback m_DebugLogCallbackHandle;
 
     // Sometimes you just have to log everything.
@@ -905,16 +899,26 @@ public class BSScene : PhysicsScene, IPhysicsParameters
             (s) => { return s.NumericBool(s._forceSimplePrimMeshing); },
             (s,p,l,v) => { s._forceSimplePrimMeshing = s.BoolNumeric(v); } ),
 
-        new ParameterDefn("MeshLOD", "Level of detail to render meshes (32, 16, 8 or 4. 32=most detailed)",
+        new ParameterDefn("MeshLevelOfDetail", "Level of detail to render meshes (32, 16, 8 or 4. 32=most detailed)",
             8f,
-            (s,cf,p,v) => { s.m_meshLOD = cf.GetInt(p, (int)v); },
-            (s) => { return (float)s.m_meshLOD; },
-            (s,p,l,v) => { s.m_meshLOD = (int)v; } ),
-        new ParameterDefn("SculptLOD", "Level of detail to render sculpties (32, 16, 8 or 4. 32=most detailed)",
+            (s,cf,p,v) => { s.MeshLOD = (float)cf.GetInt(p, (int)v); },
+            (s) => { return s.MeshLOD; },
+            (s,p,l,v) => { s.MeshLOD = v; } ),
+        new ParameterDefn("MeshLevelOfDetailMegaPrim", "Level of detail to render meshes larger than threshold meters",
+            16f,
+            (s,cf,p,v) => { s.MeshMegaPrimLOD = (float)cf.GetInt(p, (int)v); },
+            (s) => { return s.MeshMegaPrimLOD; },
+            (s,p,l,v) => { s.MeshMegaPrimLOD = v; } ),
+        new ParameterDefn("MeshLevelOfDetailMegaPrimThreshold", "Size (in meters) of a mesh before using MeshMegaPrimLOD",
+            10f,
+            (s,cf,p,v) => { s.MeshMegaPrimThreshold = (float)cf.GetInt(p, (int)v); },
+            (s) => { return s.MeshMegaPrimThreshold; },
+            (s,p,l,v) => { s.MeshMegaPrimThreshold = v; } ),
+        new ParameterDefn("SculptLevelOfDetail", "Level of detail to render sculpties (32, 16, 8 or 4. 32=most detailed)",
             32f,
-            (s,cf,p,v) => { s.m_sculptLOD = cf.GetInt(p, (int)v); },
-            (s) => { return (float)s.m_sculptLOD; },
-            (s,p,l,v) => { s.m_sculptLOD = (int)v; } ),
+            (s,cf,p,v) => { s.SculptLOD = (float)cf.GetInt(p, (int)v); },
+            (s) => { return s.SculptLOD; },
+            (s,p,l,v) => { s.SculptLOD = v; } ),
 
         new ParameterDefn("MaxSubStep", "In simulation step, maximum number of substeps",
             10f,
@@ -1145,12 +1149,6 @@ public class BSScene : PhysicsScene, IPhysicsParameters
             (s,cf,p,v) => { s.m_detailedStatsStep = cf.GetInt(p, (int)v); },
             (s) => { return (float)s.m_detailedStatsStep; },
             (s,p,l,v) => { s.m_detailedStatsStep = (int)v; } ),
-        new ParameterDefn("ShouldDebugLog", "Enables detailed DEBUG log statements",
-            ConfigurationParameters.numericFalse,
-            (s,cf,p,v) => { s.ShouldDebugLog = cf.GetBoolean(p, s.BoolNumeric(v)); },
-            (s) => { return s.NumericBool(s.ShouldDebugLog); },
-            (s,p,l,v) => { s.ShouldDebugLog = s.BoolNumeric(v); } ),
-
     };
 
     // Convert a boolean to our numeric true and false values

bin/OpenSimDefaults.ini

@@ -931,6 +931,9 @@
 
     ; level of detail for physical meshes. 32,16,8 or 4 with 32 being full detail
     MeshLevelOfDetail = 8
+    ; if mesh size is > threshold meters, we need to add more detail because people will notice
+    MeshLevelOfDetailMegaPrimThreshold = 10
+    MeshLevelOfDetailMegaPrim = 16
     ; number^2 non-physical level of detail of the sculpt texture.  32x32 - 1024 verticies
     SculptLevelOfDetail = 32