void run(int tIdx)
{
for(int ic=0; ic<m_nConstraints; ic++)
{
int i = m_start + ic;
float frictionCoeff = m_constraints[i].getFrictionCoeff();
int aIdx = (int)m_constraints[i].m_bodyA;
int bIdx = (int)m_constraints[i].m_bodyB;
b3RigidBodyCL& bodyA = m_bodies[aIdx];
b3RigidBodyCL& bodyB = m_bodies[bIdx];
if( !m_solveFriction )
{
float maxRambdaDt[4] = {FLT_MAX,FLT_MAX,FLT_MAX,FLT_MAX};
float minRambdaDt[4] = {0.f,0.f,0.f,0.f};
solveContact<false>( m_constraints[i], (b3Vector3&)bodyA.m_pos, (b3Vector3&)bodyA.m_linVel, (b3Vector3&)bodyA.m_angVel, bodyA.m_invMass, (const b3Matrix3x3 &)m_shapes[aIdx].m_invInertiaWorld,
(b3Vector3&)bodyB.m_pos, (b3Vector3&)bodyB.m_linVel, (b3Vector3&)bodyB.m_angVel, bodyB.m_invMass, (const b3Matrix3x3 &)m_shapes[bIdx].m_invInertiaWorld,
maxRambdaDt, minRambdaDt );
}
else
{
float maxRambdaDt[4] = {FLT_MAX,FLT_MAX,FLT_MAX,FLT_MAX};
float minRambdaDt[4] = {0.f,0.f,0.f,0.f};
float sum = 0;
for(int j=0; j<4; j++)
{
sum +=m_constraints[i].m_appliedRambdaDt[j];
}
frictionCoeff = 0.7f;
for(int j=0; j<4; j++)
{
maxRambdaDt[j] = frictionCoeff*sum;
minRambdaDt[j] = -maxRambdaDt[j];
}
solveFriction( m_constraints[i], (b3Vector3&)bodyA.m_pos, (b3Vector3&)bodyA.m_linVel, (b3Vector3&)bodyA.m_angVel, bodyA.m_invMass,(const b3Matrix3x3 &) m_shapes[aIdx].m_invInertiaWorld,
(b3Vector3&)bodyB.m_pos, (b3Vector3&)bodyB.m_linVel, (b3Vector3&)bodyB.m_angVel, bodyB.m_invMass,(const b3Matrix3x3 &) m_shapes[bIdx].m_invInertiaWorld,
maxRambdaDt, minRambdaDt );
}
}
}
void b3GpuJacobiContactSolver::solveGroupHost(b3RigidBodyData* bodies,b3InertiaData* inertias,int numBodies,b3Contact4* manifoldPtr, int numManifolds,const b3JacobiSolverInfo& solverInfo)
{
B3_PROFILE("b3GpuJacobiContactSolver::solveGroup");
b3AlignedObjectArray<unsigned int> bodyCount;
bodyCount.resize(numBodies);
for (int i=0;i<numBodies;i++)
bodyCount[i] = 0;
b3AlignedObjectArray<b3Int2> contactConstraintOffsets;
contactConstraintOffsets.resize(numManifolds);
for (int i=0;i<numManifolds;i++)
{
int pa = manifoldPtr[i].m_bodyAPtrAndSignBit;
int pb = manifoldPtr[i].m_bodyBPtrAndSignBit;
bool isFixedA = (pa <0) || (pa == solverInfo.m_fixedBodyIndex);
bool isFixedB = (pb <0) || (pb == solverInfo.m_fixedBodyIndex);
int bodyIndexA = manifoldPtr[i].getBodyA();
int bodyIndexB = manifoldPtr[i].getBodyB();
if (!isFixedA)
{
contactConstraintOffsets[i].x = bodyCount[bodyIndexA];
bodyCount[bodyIndexA]++;
}
if (!isFixedB)
{
contactConstraintOffsets[i].y = bodyCount[bodyIndexB];
bodyCount[bodyIndexB]++;
}
}
b3AlignedObjectArray<unsigned int> offsetSplitBodies;
offsetSplitBodies.resize(numBodies);
unsigned int totalNumSplitBodies;
m_data->m_scan->executeHost(bodyCount,offsetSplitBodies,numBodies,&totalNumSplitBodies);
int numlastBody = bodyCount[numBodies-1];
totalNumSplitBodies += numlastBody;
printf("totalNumSplitBodies = %d\n",totalNumSplitBodies);
b3AlignedObjectArray<b3GpuConstraint4> contactConstraints;
contactConstraints.resize(numManifolds);
for (int i=0;i<numManifolds;i++)
{
ContactToConstraintKernel(&manifoldPtr[0],bodies,inertias,&contactConstraints[0],numManifolds,
solverInfo.m_deltaTime,
solverInfo.m_positionDrift,
solverInfo.m_positionConstraintCoeff,
i, bodyCount);
}
int maxIter = solverInfo.m_numIterations;
b3AlignedObjectArray<b3Vector3> deltaLinearVelocities;
b3AlignedObjectArray<b3Vector3> deltaAngularVelocities;
deltaLinearVelocities.resize(totalNumSplitBodies);
deltaAngularVelocities.resize(totalNumSplitBodies);
for (int i=0;i<totalNumSplitBodies;i++)
{
deltaLinearVelocities[i].setZero();
deltaAngularVelocities[i].setZero();
}
for (int iter = 0;iter<maxIter;iter++)
{
int i=0;
for( i=0; i<numManifolds; i++)
{
float frictionCoeff = contactConstraints[i].getFrictionCoeff();
int aIdx = (int)contactConstraints[i].m_bodyA;
int bIdx = (int)contactConstraints[i].m_bodyB;
b3RigidBodyData& bodyA = bodies[aIdx];
b3RigidBodyData& bodyB = bodies[bIdx];
b3Vector3 zero = b3MakeVector3(0,0,0);
b3Vector3* dlvAPtr=&zero;
b3Vector3* davAPtr=&zero;
b3Vector3* dlvBPtr=&zero;
b3Vector3* davBPtr=&zero;
if (bodyA.m_invMass)
{
int bodyOffsetA = offsetSplitBodies[aIdx];
int constraintOffsetA = contactConstraintOffsets[i].x;
int splitIndexA = bodyOffsetA+constraintOffsetA;
dlvAPtr = &deltaLinearVelocities[splitIndexA];
davAPtr = &deltaAngularVelocities[splitIndexA];
}
if (bodyB.m_invMass)
{
int bodyOffsetB = offsetSplitBodies[bIdx];
int constraintOffsetB = contactConstraintOffsets[i].y;
int splitIndexB= bodyOffsetB+constraintOffsetB;
dlvBPtr =&deltaLinearVelocities[splitIndexB];
davBPtr = &deltaAngularVelocities[splitIndexB];
}
{
float maxRambdaDt[4] = {FLT_MAX,FLT_MAX,FLT_MAX,FLT_MAX};
float minRambdaDt[4] = {0.f,0.f,0.f,0.f};
solveContact( contactConstraints[i], (b3Vector3&)bodyA.m_pos, (b3Vector3&)bodyA.m_linVel, (b3Vector3&)bodyA.m_angVel, bodyA.m_invMass, inertias[aIdx].m_invInertiaWorld,
(b3Vector3&)bodyB.m_pos, (b3Vector3&)bodyB.m_linVel, (b3Vector3&)bodyB.m_angVel, bodyB.m_invMass, inertias[bIdx].m_invInertiaWorld,
maxRambdaDt, minRambdaDt , *dlvAPtr,*davAPtr,*dlvBPtr,*davBPtr );
}
}
//easy
for (int i=0;i<numBodies;i++)
{
if (bodies[i].m_invMass)
{
int bodyOffset = offsetSplitBodies[i];
int count = bodyCount[i];
float factor = 1.f/float(count);
b3Vector3 averageLinVel;
averageLinVel.setZero();
b3Vector3 averageAngVel;
averageAngVel.setZero();
for (int j=0;j<count;j++)
{
averageLinVel += deltaLinearVelocities[bodyOffset+j]*factor;
averageAngVel += deltaAngularVelocities[bodyOffset+j]*factor;
}
for (int j=0;j<count;j++)
{
deltaLinearVelocities[bodyOffset+j] = averageLinVel;
deltaAngularVelocities[bodyOffset+j] = averageAngVel;
}
}
}
}
for (int iter = 0;iter<maxIter;iter++)
{
int i=0;
//solve friction
for(int i=0; i<numManifolds; i++)
{
float maxRambdaDt[4] = {FLT_MAX,FLT_MAX,FLT_MAX,FLT_MAX};
float minRambdaDt[4] = {0.f,0.f,0.f,0.f};
float sum = 0;
for(int j=0; j<4; j++)
{
sum +=contactConstraints[i].m_appliedRambdaDt[j];
}
float frictionCoeff = contactConstraints[i].getFrictionCoeff();
int aIdx = (int)contactConstraints[i].m_bodyA;
int bIdx = (int)contactConstraints[i].m_bodyB;
b3RigidBodyData& bodyA = bodies[aIdx];
b3RigidBodyData& bodyB = bodies[bIdx];
b3Vector3 zero = b3MakeVector3(0,0,0);
b3Vector3* dlvAPtr=&zero;
b3Vector3* davAPtr=&zero;
b3Vector3* dlvBPtr=&zero;
b3Vector3* davBPtr=&zero;
if (bodyA.m_invMass)
{
int bodyOffsetA = offsetSplitBodies[aIdx];
int constraintOffsetA = contactConstraintOffsets[i].x;
int splitIndexA = bodyOffsetA+constraintOffsetA;
dlvAPtr = &deltaLinearVelocities[splitIndexA];
davAPtr = &deltaAngularVelocities[splitIndexA];
}
if (bodyB.m_invMass)
{
int bodyOffsetB = offsetSplitBodies[bIdx];
int constraintOffsetB = contactConstraintOffsets[i].y;
int splitIndexB= bodyOffsetB+constraintOffsetB;
dlvBPtr =&deltaLinearVelocities[splitIndexB];
davBPtr = &deltaAngularVelocities[splitIndexB];
}
for(int j=0; j<4; j++)
{
maxRambdaDt[j] = frictionCoeff*sum;
minRambdaDt[j] = -maxRambdaDt[j];
}
solveFriction( contactConstraints[i], (b3Vector3&)bodyA.m_pos, (b3Vector3&)bodyA.m_linVel, (b3Vector3&)bodyA.m_angVel, bodyA.m_invMass,inertias[aIdx].m_invInertiaWorld,
(b3Vector3&)bodyB.m_pos, (b3Vector3&)bodyB.m_linVel, (b3Vector3&)bodyB.m_angVel, bodyB.m_invMass, inertias[bIdx].m_invInertiaWorld,
maxRambdaDt, minRambdaDt , *dlvAPtr,*davAPtr,*dlvBPtr,*davBPtr);
}
//easy
for (int i=0;i<numBodies;i++)
{
if (bodies[i].m_invMass)
{
int bodyOffset = offsetSplitBodies[i];
int count = bodyCount[i];
float factor = 1.f/float(count);
b3Vector3 averageLinVel;
averageLinVel.setZero();
b3Vector3 averageAngVel;
averageAngVel.setZero();
for (int j=0;j<count;j++)
{
averageLinVel += deltaLinearVelocities[bodyOffset+j]*factor;
averageAngVel += deltaAngularVelocities[bodyOffset+j]*factor;
}
for (int j=0;j<count;j++)
{
deltaLinearVelocities[bodyOffset+j] = averageLinVel;
deltaAngularVelocities[bodyOffset+j] = averageAngVel;
}
}
}
}
//easy
for (int i=0;i<numBodies;i++)
{
if (bodies[i].m_invMass)
{
int bodyOffset = offsetSplitBodies[i];
int count = bodyCount[i];
if (count)
{
bodies[i].m_linVel += deltaLinearVelocities[bodyOffset];
bodies[i].m_angVel += deltaAngularVelocities[bodyOffset];
}
}
}
}
void b3GpuJacobiContactSolver::solveGroupMixed(b3OpenCLArray<b3RigidBodyData>* bodiesGPU,b3OpenCLArray<b3InertiaData>* inertiasGPU,b3OpenCLArray<b3Contact4>* manifoldPtrGPU,const btJacobiSolverInfo& solverInfo)
{
b3AlignedObjectArray<b3RigidBodyData> bodiesCPU;
bodiesGPU->copyToHost(bodiesCPU);
b3AlignedObjectArray<b3InertiaData> inertiasCPU;
inertiasGPU->copyToHost(inertiasCPU);
b3AlignedObjectArray<b3Contact4> manifoldPtrCPU;
manifoldPtrGPU->copyToHost(manifoldPtrCPU);
int numBodiesCPU = bodiesGPU->size();
int numManifoldsCPU = manifoldPtrGPU->size();
B3_PROFILE("b3GpuJacobiContactSolver::solveGroupMixed");
b3AlignedObjectArray<unsigned int> bodyCount;
bodyCount.resize(numBodiesCPU);
for (int i=0;i<numBodiesCPU;i++)
bodyCount[i] = 0;
b3AlignedObjectArray<b3Int2> contactConstraintOffsets;
contactConstraintOffsets.resize(numManifoldsCPU);
for (int i=0;i<numManifoldsCPU;i++)
{
int pa = manifoldPtrCPU[i].m_bodyAPtrAndSignBit;
int pb = manifoldPtrCPU[i].m_bodyBPtrAndSignBit;
bool isFixedA = (pa <0) || (pa == solverInfo.m_fixedBodyIndex);
bool isFixedB = (pb <0) || (pb == solverInfo.m_fixedBodyIndex);
int bodyIndexA = manifoldPtrCPU[i].getBodyA();
int bodyIndexB = manifoldPtrCPU[i].getBodyB();
if (!isFixedA)
{
contactConstraintOffsets[i].x = bodyCount[bodyIndexA];
bodyCount[bodyIndexA]++;
}
if (!isFixedB)
{
contactConstraintOffsets[i].y = bodyCount[bodyIndexB];
bodyCount[bodyIndexB]++;
}
}
b3AlignedObjectArray<unsigned int> offsetSplitBodies;
offsetSplitBodies.resize(numBodiesCPU);
unsigned int totalNumSplitBodiesCPU;
m_data->m_scan->executeHost(bodyCount,offsetSplitBodies,numBodiesCPU,&totalNumSplitBodiesCPU);
int numlastBody = bodyCount[numBodiesCPU-1];
totalNumSplitBodiesCPU += numlastBody;
int numBodies = bodiesGPU->size();
int numManifolds = manifoldPtrGPU->size();
m_data->m_bodyCount->resize(numBodies);
unsigned int val=0;
b3Int2 val2;
val2.x=0;
val2.y=0;
{
B3_PROFILE("m_filler");
m_data->m_contactConstraintOffsets->resize(numManifolds);
m_data->m_filler->execute(*m_data->m_bodyCount,val,numBodies);
m_data->m_filler->execute(*m_data->m_contactConstraintOffsets,val2,numManifolds);
}
{
B3_PROFILE("m_countBodiesKernel");
b3LauncherCL launcher(this->m_queue,m_data->m_countBodiesKernel);
launcher.setBuffer(manifoldPtrGPU->getBufferCL());
launcher.setBuffer(m_data->m_bodyCount->getBufferCL());
launcher.setBuffer(m_data->m_contactConstraintOffsets->getBufferCL());
launcher.setConst(numManifolds);
launcher.setConst(solverInfo.m_fixedBodyIndex);
launcher.launch1D(numManifolds);
}
unsigned int totalNumSplitBodies=0;
m_data->m_offsetSplitBodies->resize(numBodies);
m_data->m_scan->execute(*m_data->m_bodyCount,*m_data->m_offsetSplitBodies,numBodies,&totalNumSplitBodies);
totalNumSplitBodies+=m_data->m_bodyCount->at(numBodies-1);
if (totalNumSplitBodies != totalNumSplitBodiesCPU)
{
printf("error in totalNumSplitBodies!\n");
}
int numContacts = manifoldPtrGPU->size();
m_data->m_contactConstraints->resize(numContacts);
{
B3_PROFILE("contactToConstraintSplitKernel");
b3LauncherCL launcher( m_queue, m_data->m_contactToConstraintSplitKernel);
launcher.setBuffer(manifoldPtrGPU->getBufferCL());
launcher.setBuffer(bodiesGPU->getBufferCL());
launcher.setBuffer(inertiasGPU->getBufferCL());
launcher.setBuffer(m_data->m_contactConstraints->getBufferCL());
launcher.setBuffer(m_data->m_bodyCount->getBufferCL());
launcher.setConst(numContacts);
launcher.setConst(solverInfo.m_deltaTime);
launcher.setConst(solverInfo.m_positionDrift);
launcher.setConst(solverInfo.m_positionConstraintCoeff);
launcher.launch1D( numContacts, 64 );
clFinish(m_queue);
}
b3AlignedObjectArray<b3GpuConstraint4> contactConstraints;
contactConstraints.resize(numManifoldsCPU);
for (int i=0;i<numManifoldsCPU;i++)
{
ContactToConstraintKernel(&manifoldPtrCPU[0],&bodiesCPU[0],&inertiasCPU[0],&contactConstraints[0],numManifoldsCPU,
solverInfo.m_deltaTime,
solverInfo.m_positionDrift,
solverInfo.m_positionConstraintCoeff,
i, bodyCount);
}
int maxIter = solverInfo.m_numIterations;
b3AlignedObjectArray<b3Vector3> deltaLinearVelocities;
b3AlignedObjectArray<b3Vector3> deltaAngularVelocities;
deltaLinearVelocities.resize(totalNumSplitBodiesCPU);
deltaAngularVelocities.resize(totalNumSplitBodiesCPU);
for (int i=0;i<totalNumSplitBodiesCPU;i++)
{
deltaLinearVelocities[i].setZero();
deltaAngularVelocities[i].setZero();
}
m_data->m_deltaLinearVelocities->resize(totalNumSplitBodies);
m_data->m_deltaAngularVelocities->resize(totalNumSplitBodies);
{
B3_PROFILE("m_clearVelocitiesKernel");
b3LauncherCL launch(m_queue,m_data->m_clearVelocitiesKernel);
launch.setBuffer(m_data->m_deltaAngularVelocities->getBufferCL());
launch.setBuffer(m_data->m_deltaLinearVelocities->getBufferCL());
launch.setConst(totalNumSplitBodies);
launch.launch1D(totalNumSplitBodies);
}
///!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
m_data->m_contactConstraints->copyToHost(contactConstraints);
m_data->m_offsetSplitBodies->copyToHost(offsetSplitBodies);
m_data->m_contactConstraintOffsets->copyToHost(contactConstraintOffsets);
m_data->m_deltaLinearVelocities->copyToHost(deltaLinearVelocities);
m_data->m_deltaAngularVelocities->copyToHost(deltaAngularVelocities);
for (int iter = 0;iter<maxIter;iter++)
{
{
B3_PROFILE("m_solveContactKernel");
b3LauncherCL launcher( m_queue, m_data->m_solveContactKernel );
launcher.setBuffer(m_data->m_contactConstraints->getBufferCL());
launcher.setBuffer(bodiesGPU->getBufferCL());
launcher.setBuffer(inertiasGPU->getBufferCL());
launcher.setBuffer(m_data->m_contactConstraintOffsets->getBufferCL());
launcher.setBuffer(m_data->m_offsetSplitBodies->getBufferCL());
launcher.setBuffer(m_data->m_deltaLinearVelocities->getBufferCL());
launcher.setBuffer(m_data->m_deltaAngularVelocities->getBufferCL());
launcher.setConst(solverInfo.m_deltaTime);
launcher.setConst(solverInfo.m_positionDrift);
launcher.setConst(solverInfo.m_positionConstraintCoeff);
launcher.setConst(solverInfo.m_fixedBodyIndex);
launcher.setConst(numManifolds);
launcher.launch1D(numManifolds);
clFinish(m_queue);
}
int i=0;
for( i=0; i<numManifoldsCPU; i++)
{
float frictionCoeff = contactConstraints[i].getFrictionCoeff();
int aIdx = (int)contactConstraints[i].m_bodyA;
int bIdx = (int)contactConstraints[i].m_bodyB;
b3RigidBodyData& bodyA = bodiesCPU[aIdx];
b3RigidBodyData& bodyB = bodiesCPU[bIdx];
b3Vector3 zero(0,0,0);
b3Vector3* dlvAPtr=&zero;
b3Vector3* davAPtr=&zero;
b3Vector3* dlvBPtr=&zero;
b3Vector3* davBPtr=&zero;
if (bodyA.m_invMass)
{
int bodyOffsetA = offsetSplitBodies[aIdx];
int constraintOffsetA = contactConstraintOffsets[i].x;
int splitIndexA = bodyOffsetA+constraintOffsetA;
dlvAPtr = &deltaLinearVelocities[splitIndexA];
davAPtr = &deltaAngularVelocities[splitIndexA];
}
if (bodyB.m_invMass)
{
int bodyOffsetB = offsetSplitBodies[bIdx];
int constraintOffsetB = contactConstraintOffsets[i].y;
int splitIndexB= bodyOffsetB+constraintOffsetB;
dlvBPtr =&deltaLinearVelocities[splitIndexB];
davBPtr = &deltaAngularVelocities[splitIndexB];
}
{
float maxRambdaDt[4] = {FLT_MAX,FLT_MAX,FLT_MAX,FLT_MAX};
float minRambdaDt[4] = {0.f,0.f,0.f,0.f};
solveContact( contactConstraints[i], (b3Vector3&)bodyA.m_pos, (b3Vector3&)bodyA.m_linVel, (b3Vector3&)bodyA.m_angVel, bodyA.m_invMass, inertiasCPU[aIdx].m_invInertiaWorld,
(b3Vector3&)bodyB.m_pos, (b3Vector3&)bodyB.m_linVel, (b3Vector3&)bodyB.m_angVel, bodyB.m_invMass, inertiasCPU[bIdx].m_invInertiaWorld,
maxRambdaDt, minRambdaDt , *dlvAPtr,*davAPtr,*dlvBPtr,*davBPtr );
}
}
{
B3_PROFILE("average velocities");
b3LauncherCL launcher( m_queue, m_data->m_averageVelocitiesKernel);
launcher.setBuffer(bodiesGPU->getBufferCL());
launcher.setBuffer(m_data->m_offsetSplitBodies->getBufferCL());
launcher.setBuffer(m_data->m_bodyCount->getBufferCL());
launcher.setBuffer(m_data->m_deltaLinearVelocities->getBufferCL());
launcher.setBuffer(m_data->m_deltaAngularVelocities->getBufferCL());
launcher.setConst(numBodies);
launcher.launch1D(numBodies);
clFinish(m_queue);
}
//easy
for (int i=0;i<numBodiesCPU;i++)
{
if (bodiesCPU[i].m_invMass)
{
int bodyOffset = offsetSplitBodies[i];
int count = bodyCount[i];
float factor = 1.f/float(count);
b3Vector3 averageLinVel;
averageLinVel.setZero();
b3Vector3 averageAngVel;
averageAngVel.setZero();
for (int j=0;j<count;j++)
{
averageLinVel += deltaLinearVelocities[bodyOffset+j]*factor;
averageAngVel += deltaAngularVelocities[bodyOffset+j]*factor;
}
for (int j=0;j<count;j++)
{
deltaLinearVelocities[bodyOffset+j] = averageLinVel;
deltaAngularVelocities[bodyOffset+j] = averageAngVel;
}
}
}
// m_data->m_deltaAngularVelocities->copyFromHost(deltaAngularVelocities);
//m_data->m_deltaLinearVelocities->copyFromHost(deltaLinearVelocities);
m_data->m_deltaAngularVelocities->copyToHost(deltaAngularVelocities);
m_data->m_deltaLinearVelocities->copyToHost(deltaLinearVelocities);
#if 0
{
B3_PROFILE("m_solveFrictionKernel");
b3LauncherCL launcher( m_queue, m_data->m_solveFrictionKernel);
launcher.setBuffer(m_data->m_contactConstraints->getBufferCL());
launcher.setBuffer(bodiesGPU->getBufferCL());
launcher.setBuffer(inertiasGPU->getBufferCL());
launcher.setBuffer(m_data->m_contactConstraintOffsets->getBufferCL());
launcher.setBuffer(m_data->m_offsetSplitBodies->getBufferCL());
launcher.setBuffer(m_data->m_deltaLinearVelocities->getBufferCL());
launcher.setBuffer(m_data->m_deltaAngularVelocities->getBufferCL());
launcher.setConst(solverInfo.m_deltaTime);
launcher.setConst(solverInfo.m_positionDrift);
launcher.setConst(solverInfo.m_positionConstraintCoeff);
launcher.setConst(solverInfo.m_fixedBodyIndex);
launcher.setConst(numManifolds);
launcher.launch1D(numManifolds);
clFinish(m_queue);
}
//solve friction
for(int i=0; i<numManifoldsCPU; i++)
{
float maxRambdaDt[4] = {FLT_MAX,FLT_MAX,FLT_MAX,FLT_MAX};
float minRambdaDt[4] = {0.f,0.f,0.f,0.f};
float sum = 0;
for(int j=0; j<4; j++)
{
sum +=contactConstraints[i].m_appliedRambdaDt[j];
}
float frictionCoeff = contactConstraints[i].getFrictionCoeff();
int aIdx = (int)contactConstraints[i].m_bodyA;
int bIdx = (int)contactConstraints[i].m_bodyB;
b3RigidBodyData& bodyA = bodiesCPU[aIdx];
b3RigidBodyData& bodyB = bodiesCPU[bIdx];
b3Vector3 zero(0,0,0);
b3Vector3* dlvAPtr=&zero;
b3Vector3* davAPtr=&zero;
b3Vector3* dlvBPtr=&zero;
b3Vector3* davBPtr=&zero;
if (bodyA.m_invMass)
{
int bodyOffsetA = offsetSplitBodies[aIdx];
int constraintOffsetA = contactConstraintOffsets[i].x;
int splitIndexA = bodyOffsetA+constraintOffsetA;
dlvAPtr = &deltaLinearVelocities[splitIndexA];
davAPtr = &deltaAngularVelocities[splitIndexA];
}
if (bodyB.m_invMass)
{
int bodyOffsetB = offsetSplitBodies[bIdx];
int constraintOffsetB = contactConstraintOffsets[i].y;
int splitIndexB= bodyOffsetB+constraintOffsetB;
dlvBPtr =&deltaLinearVelocities[splitIndexB];
davBPtr = &deltaAngularVelocities[splitIndexB];
}
for(int j=0; j<4; j++)
{
maxRambdaDt[j] = frictionCoeff*sum;
minRambdaDt[j] = -maxRambdaDt[j];
}
solveFriction( contactConstraints[i], (b3Vector3&)bodyA.m_pos, (b3Vector3&)bodyA.m_linVel, (b3Vector3&)bodyA.m_angVel, bodyA.m_invMass,inertiasCPU[aIdx].m_invInertiaWorld,
(b3Vector3&)bodyB.m_pos, (b3Vector3&)bodyB.m_linVel, (b3Vector3&)bodyB.m_angVel, bodyB.m_invMass, inertiasCPU[bIdx].m_invInertiaWorld,
maxRambdaDt, minRambdaDt , *dlvAPtr,*davAPtr,*dlvBPtr,*davBPtr);
}
{
B3_PROFILE("average velocities");
b3LauncherCL launcher( m_queue, m_data->m_averageVelocitiesKernel);
launcher.setBuffer(bodiesGPU->getBufferCL());
launcher.setBuffer(m_data->m_offsetSplitBodies->getBufferCL());
launcher.setBuffer(m_data->m_bodyCount->getBufferCL());
launcher.setBuffer(m_data->m_deltaLinearVelocities->getBufferCL());
launcher.setBuffer(m_data->m_deltaAngularVelocities->getBufferCL());
launcher.setConst(numBodies);
launcher.launch1D(numBodies);
clFinish(m_queue);
}
//easy
for (int i=0;i<numBodiesCPU;i++)
{
if (bodiesCPU[i].m_invMass)
{
int bodyOffset = offsetSplitBodies[i];
int count = bodyCount[i];
float factor = 1.f/float(count);
b3Vector3 averageLinVel;
averageLinVel.setZero();
b3Vector3 averageAngVel;
averageAngVel.setZero();
for (int j=0;j<count;j++)
{
averageLinVel += deltaLinearVelocities[bodyOffset+j]*factor;
averageAngVel += deltaAngularVelocities[bodyOffset+j]*factor;
}
for (int j=0;j<count;j++)
{
deltaLinearVelocities[bodyOffset+j] = averageLinVel;
deltaAngularVelocities[bodyOffset+j] = averageAngVel;
}
}
}
#endif
}
{
B3_PROFILE("update body velocities");
b3LauncherCL launcher( m_queue, m_data->m_updateBodyVelocitiesKernel);
launcher.setBuffer(bodiesGPU->getBufferCL());
launcher.setBuffer(m_data->m_offsetSplitBodies->getBufferCL());
launcher.setBuffer(m_data->m_bodyCount->getBufferCL());
launcher.setBuffer(m_data->m_deltaLinearVelocities->getBufferCL());
launcher.setBuffer(m_data->m_deltaAngularVelocities->getBufferCL());
launcher.setConst(numBodies);
launcher.launch1D(numBodies);
clFinish(m_queue);
}
//easy
for (int i=0;i<numBodiesCPU;i++)
{
if (bodiesCPU[i].m_invMass)
{
int bodyOffset = offsetSplitBodies[i];
int count = bodyCount[i];
if (count)
{
bodiesCPU[i].m_linVel += deltaLinearVelocities[bodyOffset];
bodiesCPU[i].m_angVel += deltaAngularVelocities[bodyOffset];
}
}
}
// bodiesGPU->copyFromHost(bodiesCPU);
}
void run(int tIdx)
{
int offset = 0;
for (int ii=0;ii<B3_MAX_NUM_BATCHES;ii++)
{
int numInBatch = m_batchSizes->at(m_cellIndex*B3_MAX_NUM_BATCHES+ii);
if (!numInBatch)
break;
for (int jj=0;jj<numInBatch;jj++)
{
int i = m_start + offset+jj;
int batchId = m_constraints[i].m_batchIdx;
b3Assert(batchId==ii);
float frictionCoeff = m_constraints[i].getFrictionCoeff();
int aIdx = (int)m_constraints[i].m_bodyA;
int bIdx = (int)m_constraints[i].m_bodyB;
int localBatch = m_constraints[i].m_batchIdx;
b3RigidBodyCL& bodyA = m_bodies[aIdx];
b3RigidBodyCL& bodyB = m_bodies[bIdx];
if( !m_solveFriction )
{
float maxRambdaDt[4] = {FLT_MAX,FLT_MAX,FLT_MAX,FLT_MAX};
float minRambdaDt[4] = {0.f,0.f,0.f,0.f};
solveContact<false>( m_constraints[i], (b3Vector3&)bodyA.m_pos, (b3Vector3&)bodyA.m_linVel, (b3Vector3&)bodyA.m_angVel, bodyA.m_invMass, (const b3Matrix3x3 &)m_shapes[aIdx].m_invInertiaWorld,
(b3Vector3&)bodyB.m_pos, (b3Vector3&)bodyB.m_linVel, (b3Vector3&)bodyB.m_angVel, bodyB.m_invMass, (const b3Matrix3x3 &)m_shapes[bIdx].m_invInertiaWorld,
maxRambdaDt, minRambdaDt );
}
else
{
float maxRambdaDt[4] = {FLT_MAX,FLT_MAX,FLT_MAX,FLT_MAX};
float minRambdaDt[4] = {0.f,0.f,0.f,0.f};
float sum = 0;
for(int j=0; j<4; j++)
{
sum +=m_constraints[i].m_appliedRambdaDt[j];
}
frictionCoeff = 0.7f;
for(int j=0; j<4; j++)
{
maxRambdaDt[j] = frictionCoeff*sum;
minRambdaDt[j] = -maxRambdaDt[j];
}
solveFriction( m_constraints[i], (b3Vector3&)bodyA.m_pos, (b3Vector3&)bodyA.m_linVel, (b3Vector3&)bodyA.m_angVel, bodyA.m_invMass,(const b3Matrix3x3 &) m_shapes[aIdx].m_invInertiaWorld,
(b3Vector3&)bodyB.m_pos, (b3Vector3&)bodyB.m_linVel, (b3Vector3&)bodyB.m_angVel, bodyB.m_invMass,(const b3Matrix3x3 &) m_shapes[bIdx].m_invInertiaWorld,
maxRambdaDt, minRambdaDt );
}
}
offset+=numInBatch;
}
/* for (int bb=0;bb<m_maxNumBatches;bb++)
{
//for(int ic=m_nConstraints-1; ic>=0; ic--)
for(int ic=0; ic<m_nConstraints; ic++)
{
int i = m_start + ic;
if (m_constraints[i].m_batchIdx != bb)
continue;
float frictionCoeff = m_constraints[i].getFrictionCoeff();
int aIdx = (int)m_constraints[i].m_bodyA;
int bIdx = (int)m_constraints[i].m_bodyB;
int localBatch = m_constraints[i].m_batchIdx;
b3RigidBodyCL& bodyA = m_bodies[aIdx];
b3RigidBodyCL& bodyB = m_bodies[bIdx];
if( !m_solveFriction )
{
float maxRambdaDt[4] = {FLT_MAX,FLT_MAX,FLT_MAX,FLT_MAX};
float minRambdaDt[4] = {0.f,0.f,0.f,0.f};
solveContact<false>( m_constraints[i], (b3Vector3&)bodyA.m_pos, (b3Vector3&)bodyA.m_linVel, (b3Vector3&)bodyA.m_angVel, bodyA.m_invMass, (const b3Matrix3x3 &)m_shapes[aIdx].m_invInertiaWorld,
(b3Vector3&)bodyB.m_pos, (b3Vector3&)bodyB.m_linVel, (b3Vector3&)bodyB.m_angVel, bodyB.m_invMass, (const b3Matrix3x3 &)m_shapes[bIdx].m_invInertiaWorld,
maxRambdaDt, minRambdaDt );
}
else
{
float maxRambdaDt[4] = {FLT_MAX,FLT_MAX,FLT_MAX,FLT_MAX};
float minRambdaDt[4] = {0.f,0.f,0.f,0.f};
float sum = 0;
for(int j=0; j<4; j++)
{
sum +=m_constraints[i].m_appliedRambdaDt[j];
}
frictionCoeff = 0.7f;
for(int j=0; j<4; j++)
{
maxRambdaDt[j] = frictionCoeff*sum;
minRambdaDt[j] = -maxRambdaDt[j];
}
solveFriction( m_constraints[i], (b3Vector3&)bodyA.m_pos, (b3Vector3&)bodyA.m_linVel, (b3Vector3&)bodyA.m_angVel, bodyA.m_invMass,(const b3Matrix3x3 &) m_shapes[aIdx].m_invInertiaWorld,
(b3Vector3&)bodyB.m_pos, (b3Vector3&)bodyB.m_linVel, (b3Vector3&)bodyB.m_angVel, bodyB.m_invMass,(const b3Matrix3x3 &) m_shapes[bIdx].m_invInertiaWorld,
maxRambdaDt, minRambdaDt );
}
}
}
*/
}