BulletSim: Move construction of compound linkset from ShapeCollection
into LinksetCompound where it should be. Create meshes for native shapes when part of a compound linkset because scale is currently per object and not per collision shape. Don't schedule a LinksetCompound refresh if just changing properties.integration
parent
1dc23b2b97
commit
498ea76e63
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@ -34,7 +34,7 @@ namespace OpenSim.Region.Physics.BulletSPlugin
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{
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public sealed class BSLinksetCompound : BSLinkset
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{
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// private static string LogHeader = "[BULLETSIM LINKSET CONSTRAINTS]";
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private static string LogHeader = "[BULLETSIM LINKSET COMPOUND]";
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public BSLinksetCompound(BSScene scene, BSPhysObject parent)
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{
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@ -58,6 +58,12 @@ public sealed class BSLinksetCompound : BSLinkset
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// This is queued in the 'post taint' queue so the
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// refresh will happen once after all the other taints are applied.
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public override void Refresh(BSPhysObject requestor)
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{
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// External request for Refresh (from BSPrim) is not necessary
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// InternalRefresh(requestor);
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}
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private void InternalRefresh(BSPhysObject requestor)
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{
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DetailLog("{0},BSLinksetCompound.Refresh,schedulingRefresh,requestor={1}", LinksetRoot.LocalID, requestor.LocalID);
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// Queue to happen after all the other taint processing
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@ -135,13 +141,13 @@ public sealed class BSLinksetCompound : BSLinkset
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{
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bool ret = false;
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DetailLog("{0},BSLinksetCompound.RemoveBodyDependencies,removeChildrenForRoot,rID={1},rBody={2},isRoot={3}",
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child.LocalID, LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"), IsRoot(child));
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DetailLog("{0},BSLinksetCompound.RemoveBodyDependencies,refreshIfChild,rID={1},rBody={2},isRoot={3}",
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child.LocalID, LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"), IsRoot(child));
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if (!IsRoot(child))
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{
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// Cause the current shape to be freed and the new one to be built.
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Refresh(LinksetRoot);
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InternalRefresh(LinksetRoot);
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ret = true;
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}
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@ -169,7 +175,7 @@ public sealed class BSLinksetCompound : BSLinkset
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DetailLog("{0},BSLinksetCompound.AddChildToLinkset,call,child={1}", LinksetRoot.LocalID, child.LocalID);
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// Cause constraints and assorted properties to be recomputed before the next simulation step.
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Refresh(LinksetRoot);
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InternalRefresh(LinksetRoot);
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}
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return;
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}
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@ -196,34 +202,68 @@ public sealed class BSLinksetCompound : BSLinkset
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else
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{
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// Schedule a rebuild of the linkset before the next simulation tick.
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Refresh(LinksetRoot);
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InternalRefresh(LinksetRoot);
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}
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}
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return;
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}
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// Call each of the constraints that make up this linkset and recompute the
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// various transforms and variables. Create constraints of not created yet.
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// Called before the simulation step to make sure the constraint based linkset
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// Called before the simulation step to make sure the compound based linkset
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// is all initialized.
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// Constraint linksets are rebuilt every time.
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// Note that this works for rebuilding just the root after a linkset is taken apart.
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// Called at taint time!!
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private void RecomputeLinksetCompound()
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{
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DetailLog("{0},BSLinksetCompound.RecomputeLinksetCompound,start,rBody={1},numChildren={2}",
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LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"), NumberOfChildren);
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// Cause the root shape to be rebuilt as a compound object with just the root in it
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LinksetRoot.ForceBodyShapeRebuild(true);
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DetailLog("{0},BSLinksetCompound.RecomputeLinksetCompound,start,rBody={1},rShape={2},numChildren={3}",
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LinksetRoot.LocalID, LinksetRoot.PhysBody, LinksetRoot.PhysShape, NumberOfChildren);
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ForEachMember(delegate(BSPhysObject cPrim)
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{
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if (!IsRoot(cPrim))
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{
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OMV.Quaternion invRootOrientation = OMV.Quaternion.Inverse(LinksetRoot.RawOrientation);
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OMV.Vector3 displacementPos = (cPrim.RawPosition - LinksetRoot.RawPosition) * invRootOrientation;
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OMV.Quaternion displacementRot = cPrim.RawOrientation * invRootOrientation;
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DetailLog("{0},BSLinksetCompound.RecomputeLinksetCompound,addMemberToShape,mID={1},mShape={2},dispPos={3},dispRot={4}",
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LinksetRoot.LocalID, cPrim.LocalID, cPrim.PhysShape, displacementPos, displacementRot);
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if (cPrim.PhysShape.isNativeShape)
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{
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// Native shapes are not shared so we need to create a new one.
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// A mesh or hull is created because scale is not available on a native shape.
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// (TODO: Bullet does have a btScaledCollisionShape. Can that be used?)
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BulletShape saveShape = cPrim.PhysShape;
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PhysicsScene.Shapes.CreateGeomMeshOrHull(cPrim, null);
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BulletShape newShape = cPrim.PhysShape;
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cPrim.PhysShape = saveShape;
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BulletSimAPI.AddChildShapeToCompoundShape2(LinksetRoot.PhysShape.ptr, newShape.ptr, displacementPos, displacementRot);
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}
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else
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{
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// For the shared shapes (meshes and hulls) just use the shape in the child
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if (PhysicsScene.Shapes.ReferenceShape(cPrim.PhysShape))
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{
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PhysicsScene.Logger.ErrorFormat("{0} Rebuilt sharable shape when building linkset! Region={1}, primID={2}, shape={3}",
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LogHeader, PhysicsScene.RegionName, cPrim.LocalID, cPrim.PhysShape);
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}
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BulletSimAPI.AddChildShapeToCompoundShape2(LinksetRoot.PhysShape.ptr, cPrim.PhysShape.ptr, displacementPos, displacementRot);
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}
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}
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return false;
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});
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float linksetMass = LinksetMass;
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LinksetRoot.UpdatePhysicalMassProperties(linksetMass);
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// DEBUG: see of inter-linkset collisions are causing problems
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// BulletSimAPI.SetCollisionFilterMask2(LinksetRoot.BSBody.ptr,
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// (uint)CollisionFilterGroups.LinksetFilter, (uint)CollisionFilterGroups.LinksetMask);
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DetailLog("{0},BSLinksetCompound.RecomputeLinksetCompound,end,rBody={1},linksetMass={2}",
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LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"), linksetMass);
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}
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}
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@ -116,6 +116,10 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
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// True if initialized and ready to do simulation steps
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private bool m_initialized = false;
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// Flag which is true when processing taints.
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// Not guaranteed to be correct all the time (don't depend on this) but good for debugging.
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public bool InTaintTime { get; private set; }
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// Pinned memory used to pass step information between managed and unmanaged
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private int m_maxCollisionsPerFrame;
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private CollisionDesc[] m_collisionArray;
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@ -270,6 +274,9 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
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TerrainManager = new BSTerrainManager(this);
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TerrainManager.CreateInitialGroundPlaneAndTerrain();
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m_log.WarnFormat("{0} Linksets implemented with {1}", LogHeader, (BSLinkset.LinksetImplementation)Params.linksetImplementation);
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InTaintTime = false;
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m_initialized = true;
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}
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@ -707,8 +714,10 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
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// here just before the physics engine is called to step the simulation.
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public void ProcessTaints()
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{
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InTaintTime = true;
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ProcessRegularTaints();
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ProcessPostTaintTaints();
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InTaintTime = false;
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}
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private void ProcessRegularTaints()
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@ -851,6 +860,17 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
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}
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}
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public bool AssertInTaintTime(string whereFrom)
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{
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if (!InTaintTime)
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{
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DetailLog("{0},BSScene.AssertInTaintTime,NOT IN TAINT TIME,Region={1},Where={2}", DetailLogZero, RegionName, whereFrom);
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m_log.ErrorFormat("{0} NOT IN TAINT TIME!! Region={1}, Where={2}", LogHeader, RegionName, whereFrom);
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Util.PrintCallStack();
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}
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return InTaintTime;
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}
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#endregion // Taints
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#region Vehicles
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@ -1214,8 +1234,8 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
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(s) => { return s.m_params[0].numberOfSolverIterations; },
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(s,p,l,v) => { s.m_params[0].numberOfSolverIterations = v; } ),
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new ParameterDefn("LinksetImplementation", "Type of linkset implementation (0=Constraint, 1=Compound)",
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(float)BSLinkset.LinksetImplementation.Constraint,
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new ParameterDefn("LinksetImplementation", "Type of linkset implementation (0=Constraint, 1=Compound, 2=Manual)",
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(float)BSLinkset.LinksetImplementation.Compound,
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(s,cf,p,v) => { s.m_params[0].linksetImplementation = cf.GetFloat(p,v); },
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(s) => { return s.m_params[0].linksetImplementation; },
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(s,p,l,v) => { s.m_params[0].linksetImplementation = v; } ),
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@ -92,6 +92,8 @@ public sealed class BSShapeCollection : IDisposable
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public bool GetBodyAndShape(bool forceRebuild, BulletSim sim, BSPhysObject prim,
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ShapeDestructionCallback shapeCallback, BodyDestructionCallback bodyCallback)
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{
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PhysicsScene.AssertInTaintTime("BSShapeCollection.GetBodyAndShape");
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bool ret = false;
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// This lock could probably be pushed down lower but building shouldn't take long
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@ -121,7 +123,7 @@ public sealed class BSShapeCollection : IDisposable
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{
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lock (m_collectionActivityLock)
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{
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DetailLog("{0},BSShapeCollection.ReferenceBody,newBody", body.ID, body);
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DetailLog("{0},BSShapeCollection.ReferenceBody,newBody,body={1}", body.ID, body);
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PhysicsScene.TaintedObject(inTaintTime, "BSShapeCollection.ReferenceBody", delegate()
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{
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if (!BulletSimAPI.IsInWorld2(body.ptr))
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@ -165,7 +167,7 @@ public sealed class BSShapeCollection : IDisposable
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// Meshes and hulls for the same shape have the same hash key.
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// NOTE that native shapes are not added to the mesh list or removed.
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// Returns 'true' if this is the initial reference to the shape. Otherwise reused.
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private bool ReferenceShape(BulletShape shape)
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public bool ReferenceShape(BulletShape shape)
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{
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bool ret = false;
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switch (shape.type)
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@ -276,8 +278,8 @@ public sealed class BSShapeCollection : IDisposable
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if (shapeCallback != null) shapeCallback(shape);
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meshDesc.lastReferenced = System.DateTime.Now;
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Meshes[shape.shapeKey] = meshDesc;
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DetailLog("{0},BSShapeCollection.DereferenceMesh,key={1},refCnt={2}",
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BSScene.DetailLogZero, shape.shapeKey.ToString("X"), meshDesc.referenceCount);
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DetailLog("{0},BSShapeCollection.DereferenceMesh,shape={1},refCnt={2}",
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BSScene.DetailLogZero, shape, meshDesc.referenceCount);
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}
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}
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@ -297,8 +299,8 @@ public sealed class BSShapeCollection : IDisposable
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hullDesc.lastReferenced = System.DateTime.Now;
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Hulls[shape.shapeKey] = hullDesc;
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DetailLog("{0},BSShapeCollection.DereferenceHull,key={1},refCnt={2}",
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BSScene.DetailLogZero, shape.shapeKey.ToString("X"), hullDesc.referenceCount);
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DetailLog("{0},BSShapeCollection.DereferenceHull,shape={1},refCnt={2}",
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BSScene.DetailLogZero, shape, hullDesc.referenceCount);
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}
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}
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@ -319,8 +321,11 @@ public sealed class BSShapeCollection : IDisposable
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BSScene.DetailLogZero, shape.type, shape.ptr.ToString("X"));
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return;
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}
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int numChildren = BulletSimAPI.GetNumberOfCompoundChildren2(shape.ptr);
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for (int ii = 0; ii < numChildren; ii++)
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DetailLog("{0},BSShapeCollection.DereferenceCompound,shape={1},children={2}", BSScene.DetailLogZero, shape, numChildren);
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for (int ii = numChildren - 1; ii >= 0; ii--)
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{
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IntPtr childShape = BulletSimAPI.RemoveChildShapeFromCompoundShapeIndex2(shape.ptr, ii);
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DereferenceAnonCollisionShape(childShape);
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@ -343,6 +348,7 @@ public sealed class BSShapeCollection : IDisposable
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shapeInfo.isNativeShape = true;
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shapeInfo.type = ShapeData.PhysicsShapeType.SHAPE_BOX; // (technically, type doesn't matter)
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}
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DetailLog("{0},BSShapeCollection.DereferenceAnonCollisionShape,shape={1}", BSScene.DetailLogZero, shapeInfo);
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DereferenceShape(shapeInfo, true, null);
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}
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@ -440,23 +446,32 @@ public sealed class BSShapeCollection : IDisposable
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}
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// If a simple shape is not happening, create a mesh and possibly a hull.
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// Note that if it's a native shape, the check for physical/non-physical is not
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// made. Native shapes work in either case.
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if (!haveShape && pbs != null)
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{
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if (prim.IsPhysical && PhysicsScene.ShouldUseHullsForPhysicalObjects)
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{
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// Update prim.BSShape to reference a hull of this shape.
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ret = GetReferenceToHull(prim,shapeCallback);
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DetailLog("{0},BSShapeCollection.CreateGeom,hull,shape={1},key={2}",
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prim.LocalID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X"));
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}
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else
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{
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ret = GetReferenceToMesh(prim, shapeCallback);
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DetailLog("{0},BSShapeCollection.CreateGeom,mesh,shape={1},key={2}",
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prim.LocalID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X"));
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}
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ret = CreateGeomMeshOrHull(prim, shapeCallback);
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}
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return ret;
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}
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public bool CreateGeomMeshOrHull(BSPhysObject prim, ShapeDestructionCallback shapeCallback)
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{
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bool ret = false;
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// Note that if it's a native shape, the check for physical/non-physical is not
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// made. Native shapes work in either case.
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if (prim.IsPhysical && PhysicsScene.ShouldUseHullsForPhysicalObjects)
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{
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// Update prim.BSShape to reference a hull of this shape.
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ret = GetReferenceToHull(prim,shapeCallback);
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DetailLog("{0},BSShapeCollection.CreateGeom,hull,shape={1},key={2}",
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prim.LocalID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X"));
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}
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else
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{
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ret = GetReferenceToMesh(prim, shapeCallback);
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DetailLog("{0},BSShapeCollection.CreateGeom,mesh,shape={1},key={2}",
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prim.LocalID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X"));
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}
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return ret;
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}
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@ -743,32 +758,16 @@ public sealed class BSShapeCollection : IDisposable
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// This shouldn't be to bad since most of the parts will be meshes that had been built previously.
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private bool GetReferenceToCompoundShape(BSPhysObject prim, ShapeDestructionCallback shapeCallback)
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{
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// Remove reference to the old shape
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// Don't need to do this as the shape is freed when we create the new root shape below.
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// DereferenceShape(prim.PhysShape, true, shapeCallback);
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BulletShape cShape = new BulletShape(
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BulletSimAPI.CreateCompoundShape2(PhysicsScene.World.ptr), ShapeData.PhysicsShapeType.SHAPE_COMPOUND);
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// The prim's linkset is the source of the children.
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// TODO: there is too much knowledge here about the internals of linksets and too much
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// dependency on the relationship of compound shapes and linksets (what if we want to use
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// compound shapes for something else?). Think through this and clean up so the
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// appropriate knowledge is used at the correct software levels.
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// Recreate the geometry of the root prim (might have been a linkset root in the past)
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// Create the shape for the root prim and add it to the compound shape
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CreateGeomNonSpecial(true, prim, null);
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BSPhysObject rootPrim = prim.Linkset.LinksetRoot;
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prim.Linkset.ForEachMember(delegate(BSPhysObject cPrim)
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{
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OMV.Quaternion invRootOrientation = OMV.Quaternion.Inverse(rootPrim.RawOrientation);
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OMV.Vector3 displacementPos = (cPrim.RawPosition - rootPrim.RawPosition) * invRootOrientation;
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OMV.Quaternion displacementRot = cPrim.RawOrientation * invRootOrientation;
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DetailLog("{0},BSShapeCollection.GetReferenceToCompoundShape,addMemberToShape,mID={1},mShape={2},dispPos={3},dispRot={4}",
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prim.LocalID, cPrim.LocalID, cPrim.PhysShape.ptr.ToString("X"), displacementPos, displacementRot);
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BulletSimAPI.AddChildShapeToCompoundShape2(cShape.ptr, cPrim.PhysShape.ptr, displacementPos, displacementRot);
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return false;
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});
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BulletSimAPI.AddChildShapeToCompoundShape2(cShape.ptr, prim.PhysShape.ptr, OMV.Vector3.Zero, OMV.Quaternion.Identity);
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prim.PhysShape = cShape;
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