BulletSim: add expanded call to IMesher/Meshmerizer which enables/disables mesh caching. Since BulletSim caches and tracks the unmanaged memory version of meshes, the Meshmerizer itself does not need to cache built meshes once BulletSim has made the physical proxy mesh.

OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs

@@ -620,8 +620,7 @@ public sealed class BSShapeCollection : IDisposable
         }
         else
         {
-            // Pass false for physicalness as this creates some sort of bounding box which we don't need
+            meshData = PhysicsScene.mesher.CreateMesh(objName, pbs, size, lod, true, false);
-            meshData = PhysicsScene.mesher.CreateMesh(objName, pbs, size, lod, false);
 
             if (meshData != null)
             {
@@ -694,8 +693,8 @@ public sealed class BSShapeCollection : IDisposable
         else
         {
             // Build a new hull in the physical world
-            // Pass false for physicalness as this creates some sort of bounding box which we don't need
+            // Pass true for physicalness as this creates some sort of bounding box which we don't need
-            IMesh meshData = PhysicsScene.mesher.CreateMesh(objName, pbs, size, lod, false);
+            IMesh meshData = PhysicsScene.mesher.CreateMesh(objName, pbs, size, lod, true, false);
             if (meshData != null)
             {
 

OpenSim/Region/Physics/Manager/IMesher.cs

@@ -36,6 +36,7 @@ namespace OpenSim.Region.Physics.Manager
     {
         IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod);
         IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical);
+        IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool shouldCache);
     }
 
     // Values for level of detail to be passed to the mesher.

OpenSim/Region/Physics/Manager/ZeroMesher.cs

@@ -64,10 +64,15 @@ namespace OpenSim.Region.Physics.Manager
     {
         public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod)
         {
-            return CreateMesh(primName, primShape, size, lod, false);
+            return CreateMesh(primName, primShape, size, lod, false, false);
         }
 
         public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical)
+        {
+            return CreateMesh(primName, primShape, size, lod, false, false);
+        }
+
+        public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool shouldCache)
         {
             // Remove the reference to the encoded JPEG2000 data so it can be GCed
             primShape.SculptData = OpenMetaverse.Utils.EmptyBytes;

OpenSim/Region/Physics/Meshing/Meshmerizer.cs

@@ -702,11 +702,16 @@ namespace OpenSim.Region.Physics.Meshing
 
         public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod)
         {
-            return CreateMesh(primName, primShape, size, lod, false);
+            return CreateMesh(primName, primShape, size, lod, false, true);
         }
 
         public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical)
         {
+            return CreateMesh(primName, primShape, size, lod, isPhysical, true);
+        }
+
+        public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool shouldCache)
+        {
 #if SPAM
             m_log.DebugFormat("[MESH]: Creating mesh for {0}", primName);
 #endif
@@ -716,9 +721,12 @@ namespace OpenSim.Region.Physics.Meshing
 
             // If this mesh has been created already, return it instead of creating another copy
             // For large regions with 100k+ prims and hundreds of copies of each, this can save a GB or more of memory
+            if (shouldCache)
+            {
                 key = primShape.GetMeshKey(size, lod);
                 if (m_uniqueMeshes.TryGetValue(key, out mesh))
                     return mesh;
+            }
 
             if (size.X < 0.01f) size.X = 0.01f;
             if (size.Y < 0.01f) size.Y = 0.01f;
@@ -741,8 +749,11 @@ namespace OpenSim.Region.Physics.Meshing
                 // trim the vertex and triangle lists to free up memory
                 mesh.TrimExcess();
 
+                if (shouldCache)
+                {
                     m_uniqueMeshes.Add(key, mesh);
                 }
+            }
 
             return mesh;
         }