From 498ea76e637961d8b4e3d39b758f7f2dea2fe998 Mon Sep 17 00:00:00 2001 From: Robert Adams Date: Fri, 2 Nov 2012 17:22:34 -0700 Subject: 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. --- .../Physics/BulletSPlugin/BSLinksetCompound.cs | 72 ++++++++++++++---- OpenSim/Region/Physics/BulletSPlugin/BSScene.cs | 24 +++++- .../Physics/BulletSPlugin/BSShapeCollection.cs | 85 +++++++++++----------- 3 files changed, 120 insertions(+), 61 deletions(-) diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs b/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs index 8b97ebb..adf4aff 100755 --- a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs +++ b/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs @@ -34,7 +34,7 @@ namespace OpenSim.Region.Physics.BulletSPlugin { public sealed class BSLinksetCompound : BSLinkset { - // private static string LogHeader = "[BULLETSIM LINKSET CONSTRAINTS]"; + private static string LogHeader = "[BULLETSIM LINKSET COMPOUND]"; public BSLinksetCompound(BSScene scene, BSPhysObject parent) { @@ -59,6 +59,12 @@ public sealed class BSLinksetCompound : BSLinkset // refresh will happen once after all the other taints are applied. public override void Refresh(BSPhysObject requestor) { + // External request for Refresh (from BSPrim) is not necessary + // InternalRefresh(requestor); + } + + private void InternalRefresh(BSPhysObject requestor) + { DetailLog("{0},BSLinksetCompound.Refresh,schedulingRefresh,requestor={1}", LinksetRoot.LocalID, requestor.LocalID); // Queue to happen after all the other taint processing PhysicsScene.PostTaintObject("BSLinksetCompound.Refresh", requestor.LocalID, delegate() @@ -135,13 +141,13 @@ public sealed class BSLinksetCompound : BSLinkset { bool ret = false; - DetailLog("{0},BSLinksetCompound.RemoveBodyDependencies,removeChildrenForRoot,rID={1},rBody={2},isRoot={3}", - child.LocalID, LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"), IsRoot(child)); + DetailLog("{0},BSLinksetCompound.RemoveBodyDependencies,refreshIfChild,rID={1},rBody={2},isRoot={3}", + child.LocalID, LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"), IsRoot(child)); if (!IsRoot(child)) { // Cause the current shape to be freed and the new one to be built. - Refresh(LinksetRoot); + InternalRefresh(LinksetRoot); ret = true; } @@ -169,7 +175,7 @@ public sealed class BSLinksetCompound : BSLinkset DetailLog("{0},BSLinksetCompound.AddChildToLinkset,call,child={1}", LinksetRoot.LocalID, child.LocalID); // Cause constraints and assorted properties to be recomputed before the next simulation step. - Refresh(LinksetRoot); + InternalRefresh(LinksetRoot); } return; } @@ -196,34 +202,68 @@ public sealed class BSLinksetCompound : BSLinkset else { // Schedule a rebuild of the linkset before the next simulation tick. - Refresh(LinksetRoot); + InternalRefresh(LinksetRoot); } } return; } - - // Call each of the constraints that make up this linkset and recompute the - // various transforms and variables. Create constraints of not created yet. - // Called before the simulation step to make sure the constraint based linkset + // Called before the simulation step to make sure the compound based linkset // is all initialized. + // Constraint linksets are rebuilt every time. + // Note that this works for rebuilding just the root after a linkset is taken apart. // Called at taint time!! private void RecomputeLinksetCompound() { - DetailLog("{0},BSLinksetCompound.RecomputeLinksetCompound,start,rBody={1},numChildren={2}", - LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"), NumberOfChildren); - + // Cause the root shape to be rebuilt as a compound object with just the root in it LinksetRoot.ForceBodyShapeRebuild(true); + DetailLog("{0},BSLinksetCompound.RecomputeLinksetCompound,start,rBody={1},rShape={2},numChildren={3}", + LinksetRoot.LocalID, LinksetRoot.PhysBody, LinksetRoot.PhysShape, NumberOfChildren); + + ForEachMember(delegate(BSPhysObject cPrim) + { + if (!IsRoot(cPrim)) + { + OMV.Quaternion invRootOrientation = OMV.Quaternion.Inverse(LinksetRoot.RawOrientation); + OMV.Vector3 displacementPos = (cPrim.RawPosition - LinksetRoot.RawPosition) * invRootOrientation; + OMV.Quaternion displacementRot = cPrim.RawOrientation * invRootOrientation; + + DetailLog("{0},BSLinksetCompound.RecomputeLinksetCompound,addMemberToShape,mID={1},mShape={2},dispPos={3},dispRot={4}", + LinksetRoot.LocalID, cPrim.LocalID, cPrim.PhysShape, displacementPos, displacementRot); + + if (cPrim.PhysShape.isNativeShape) + { + // Native shapes are not shared so we need to create a new one. + // A mesh or hull is created because scale is not available on a native shape. + // (TODO: Bullet does have a btScaledCollisionShape. Can that be used?) + BulletShape saveShape = cPrim.PhysShape; + PhysicsScene.Shapes.CreateGeomMeshOrHull(cPrim, null); + BulletShape newShape = cPrim.PhysShape; + cPrim.PhysShape = saveShape; + BulletSimAPI.AddChildShapeToCompoundShape2(LinksetRoot.PhysShape.ptr, newShape.ptr, displacementPos, displacementRot); + } + else + { + // For the shared shapes (meshes and hulls) just use the shape in the child + if (PhysicsScene.Shapes.ReferenceShape(cPrim.PhysShape)) + { + PhysicsScene.Logger.ErrorFormat("{0} Rebuilt sharable shape when building linkset! Region={1}, primID={2}, shape={3}", + LogHeader, PhysicsScene.RegionName, cPrim.LocalID, cPrim.PhysShape); + } + BulletSimAPI.AddChildShapeToCompoundShape2(LinksetRoot.PhysShape.ptr, cPrim.PhysShape.ptr, displacementPos, displacementRot); + } + } + return false; + }); + + float linksetMass = LinksetMass; LinksetRoot.UpdatePhysicalMassProperties(linksetMass); // DEBUG: see of inter-linkset collisions are causing problems // BulletSimAPI.SetCollisionFilterMask2(LinksetRoot.BSBody.ptr, // (uint)CollisionFilterGroups.LinksetFilter, (uint)CollisionFilterGroups.LinksetMask); - DetailLog("{0},BSLinksetCompound.RecomputeLinksetCompound,end,rBody={1},linksetMass={2}", - LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"), linksetMass); - } } diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs index 13aa860..de35359 100644 --- a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs +++ b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs @@ -116,6 +116,10 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters // True if initialized and ready to do simulation steps private bool m_initialized = false; + // Flag which is true when processing taints. + // Not guaranteed to be correct all the time (don't depend on this) but good for debugging. + public bool InTaintTime { get; private set; } + // Pinned memory used to pass step information between managed and unmanaged private int m_maxCollisionsPerFrame; private CollisionDesc[] m_collisionArray; @@ -270,6 +274,9 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters TerrainManager = new BSTerrainManager(this); TerrainManager.CreateInitialGroundPlaneAndTerrain(); + m_log.WarnFormat("{0} Linksets implemented with {1}", LogHeader, (BSLinkset.LinksetImplementation)Params.linksetImplementation); + + InTaintTime = false; m_initialized = true; } @@ -707,8 +714,10 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters // here just before the physics engine is called to step the simulation. public void ProcessTaints() { + InTaintTime = true; ProcessRegularTaints(); ProcessPostTaintTaints(); + InTaintTime = false; } private void ProcessRegularTaints() @@ -851,6 +860,17 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters } } + public bool AssertInTaintTime(string whereFrom) + { + if (!InTaintTime) + { + DetailLog("{0},BSScene.AssertInTaintTime,NOT IN TAINT TIME,Region={1},Where={2}", DetailLogZero, RegionName, whereFrom); + m_log.ErrorFormat("{0} NOT IN TAINT TIME!! Region={1}, Where={2}", LogHeader, RegionName, whereFrom); + Util.PrintCallStack(); + } + return InTaintTime; + } + #endregion // Taints #region Vehicles @@ -1214,8 +1234,8 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters (s) => { return s.m_params[0].numberOfSolverIterations; }, (s,p,l,v) => { s.m_params[0].numberOfSolverIterations = v; } ), - new ParameterDefn("LinksetImplementation", "Type of linkset implementation (0=Constraint, 1=Compound)", - (float)BSLinkset.LinksetImplementation.Constraint, + new ParameterDefn("LinksetImplementation", "Type of linkset implementation (0=Constraint, 1=Compound, 2=Manual)", + (float)BSLinkset.LinksetImplementation.Compound, (s,cf,p,v) => { s.m_params[0].linksetImplementation = cf.GetFloat(p,v); }, (s) => { return s.m_params[0].linksetImplementation; }, (s,p,l,v) => { s.m_params[0].linksetImplementation = v; } ), diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs b/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs index 107befe..662b19d 100755 --- a/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs +++ b/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs @@ -92,6 +92,8 @@ public sealed class BSShapeCollection : IDisposable public bool GetBodyAndShape(bool forceRebuild, BulletSim sim, BSPhysObject prim, ShapeDestructionCallback shapeCallback, BodyDestructionCallback bodyCallback) { + PhysicsScene.AssertInTaintTime("BSShapeCollection.GetBodyAndShape"); + bool ret = false; // This lock could probably be pushed down lower but building shouldn't take long @@ -121,7 +123,7 @@ public sealed class BSShapeCollection : IDisposable { lock (m_collectionActivityLock) { - DetailLog("{0},BSShapeCollection.ReferenceBody,newBody", body.ID, body); + DetailLog("{0},BSShapeCollection.ReferenceBody,newBody,body={1}", body.ID, body); PhysicsScene.TaintedObject(inTaintTime, "BSShapeCollection.ReferenceBody", delegate() { if (!BulletSimAPI.IsInWorld2(body.ptr)) @@ -165,7 +167,7 @@ public sealed class BSShapeCollection : IDisposable // Meshes and hulls for the same shape have the same hash key. // NOTE that native shapes are not added to the mesh list or removed. // Returns 'true' if this is the initial reference to the shape. Otherwise reused. - private bool ReferenceShape(BulletShape shape) + public bool ReferenceShape(BulletShape shape) { bool ret = false; switch (shape.type) @@ -276,8 +278,8 @@ public sealed class BSShapeCollection : IDisposable if (shapeCallback != null) shapeCallback(shape); meshDesc.lastReferenced = System.DateTime.Now; Meshes[shape.shapeKey] = meshDesc; - DetailLog("{0},BSShapeCollection.DereferenceMesh,key={1},refCnt={2}", - BSScene.DetailLogZero, shape.shapeKey.ToString("X"), meshDesc.referenceCount); + DetailLog("{0},BSShapeCollection.DereferenceMesh,shape={1},refCnt={2}", + BSScene.DetailLogZero, shape, meshDesc.referenceCount); } } @@ -297,8 +299,8 @@ public sealed class BSShapeCollection : IDisposable hullDesc.lastReferenced = System.DateTime.Now; Hulls[shape.shapeKey] = hullDesc; - DetailLog("{0},BSShapeCollection.DereferenceHull,key={1},refCnt={2}", - BSScene.DetailLogZero, shape.shapeKey.ToString("X"), hullDesc.referenceCount); + DetailLog("{0},BSShapeCollection.DereferenceHull,shape={1},refCnt={2}", + BSScene.DetailLogZero, shape, hullDesc.referenceCount); } } @@ -319,8 +321,11 @@ public sealed class BSShapeCollection : IDisposable BSScene.DetailLogZero, shape.type, shape.ptr.ToString("X")); return; } + int numChildren = BulletSimAPI.GetNumberOfCompoundChildren2(shape.ptr); - for (int ii = 0; ii < numChildren; ii++) + DetailLog("{0},BSShapeCollection.DereferenceCompound,shape={1},children={2}", BSScene.DetailLogZero, shape, numChildren); + + for (int ii = numChildren - 1; ii >= 0; ii--) { IntPtr childShape = BulletSimAPI.RemoveChildShapeFromCompoundShapeIndex2(shape.ptr, ii); DereferenceAnonCollisionShape(childShape); @@ -343,6 +348,7 @@ public sealed class BSShapeCollection : IDisposable shapeInfo.isNativeShape = true; shapeInfo.type = ShapeData.PhysicsShapeType.SHAPE_BOX; // (technically, type doesn't matter) } + DetailLog("{0},BSShapeCollection.DereferenceAnonCollisionShape,shape={1}", BSScene.DetailLogZero, shapeInfo); DereferenceShape(shapeInfo, true, null); } @@ -440,23 +446,32 @@ public sealed class BSShapeCollection : IDisposable } // If a simple shape is not happening, create a mesh and possibly a hull. + if (!haveShape && pbs != null) + { + ret = CreateGeomMeshOrHull(prim, shapeCallback); + } + + return ret; + } + + public bool CreateGeomMeshOrHull(BSPhysObject prim, ShapeDestructionCallback shapeCallback) + { + + bool ret = false; // Note that if it's a native shape, the check for physical/non-physical is not // made. Native shapes work in either case. - if (!haveShape && pbs != null) + if (prim.IsPhysical && PhysicsScene.ShouldUseHullsForPhysicalObjects) { - if (prim.IsPhysical && PhysicsScene.ShouldUseHullsForPhysicalObjects) - { - // Update prim.BSShape to reference a hull of this shape. - ret = GetReferenceToHull(prim,shapeCallback); - DetailLog("{0},BSShapeCollection.CreateGeom,hull,shape={1},key={2}", - prim.LocalID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X")); - } - else - { - ret = GetReferenceToMesh(prim, shapeCallback); - DetailLog("{0},BSShapeCollection.CreateGeom,mesh,shape={1},key={2}", - prim.LocalID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X")); - } + // Update prim.BSShape to reference a hull of this shape. + ret = GetReferenceToHull(prim,shapeCallback); + DetailLog("{0},BSShapeCollection.CreateGeom,hull,shape={1},key={2}", + prim.LocalID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X")); + } + else + { + ret = GetReferenceToMesh(prim, shapeCallback); + DetailLog("{0},BSShapeCollection.CreateGeom,mesh,shape={1},key={2}", + prim.LocalID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X")); } return ret; } @@ -743,32 +758,16 @@ public sealed class BSShapeCollection : IDisposable // This shouldn't be to bad since most of the parts will be meshes that had been built previously. private bool GetReferenceToCompoundShape(BSPhysObject prim, ShapeDestructionCallback shapeCallback) { + // Remove reference to the old shape + // Don't need to do this as the shape is freed when we create the new root shape below. + // DereferenceShape(prim.PhysShape, true, shapeCallback); + BulletShape cShape = new BulletShape( BulletSimAPI.CreateCompoundShape2(PhysicsScene.World.ptr), ShapeData.PhysicsShapeType.SHAPE_COMPOUND); - // The prim's linkset is the source of the children. - // TODO: there is too much knowledge here about the internals of linksets and too much - // dependency on the relationship of compound shapes and linksets (what if we want to use - // compound shapes for something else?). Think through this and clean up so the - // appropriate knowledge is used at the correct software levels. - - // Recreate the geometry of the root prim (might have been a linkset root in the past) + // Create the shape for the root prim and add it to the compound shape CreateGeomNonSpecial(true, prim, null); - - BSPhysObject rootPrim = prim.Linkset.LinksetRoot; - - prim.Linkset.ForEachMember(delegate(BSPhysObject cPrim) - { - OMV.Quaternion invRootOrientation = OMV.Quaternion.Inverse(rootPrim.RawOrientation); - OMV.Vector3 displacementPos = (cPrim.RawPosition - rootPrim.RawPosition) * invRootOrientation; - OMV.Quaternion displacementRot = cPrim.RawOrientation * invRootOrientation; - - DetailLog("{0},BSShapeCollection.GetReferenceToCompoundShape,addMemberToShape,mID={1},mShape={2},dispPos={3},dispRot={4}", - prim.LocalID, cPrim.LocalID, cPrim.PhysShape.ptr.ToString("X"), displacementPos, displacementRot); - - BulletSimAPI.AddChildShapeToCompoundShape2(cShape.ptr, cPrim.PhysShape.ptr, displacementPos, displacementRot); - return false; - }); + BulletSimAPI.AddChildShapeToCompoundShape2(cShape.ptr, prim.PhysShape.ptr, OMV.Vector3.Zero, OMV.Quaternion.Identity); prim.PhysShape = cShape; -- cgit v1.1