include/PxParticleGpu.h
File members: include/PxParticleGpu.h
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2024 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#ifndef PX_GPU_PARTICLE_SYSTEM_H
#define PX_GPU_PARTICLE_SYSTEM_H
#include "foundation/PxSimpleTypes.h"
#include "foundation/PxVec3.h"
#include "PxParticleSystem.h"
#if !PX_DOXYGEN
namespace physx
{
#endif
struct PxsParticleMaterialData
{
PxReal friction; // 4
PxReal damping; // 8
PxReal adhesion; // 12
PxReal gravityScale; // 16
PxReal adhesionRadiusScale; // 20
};
#if !PX_DOXYGEN
} // namespace physx
#endif
#if PX_SUPPORT_GPU_PHYSX
struct float4;
PX_CUDA_CALLABLE inline physx::PxU32 PxGetGroup(physx::PxU32 phase) { return phase & physx::PxParticlePhaseFlag::eParticlePhaseGroupMask; }
PX_CUDA_CALLABLE inline bool PxGetFluid(physx::PxU32 phase) { return (phase & physx::PxParticlePhaseFlag::eParticlePhaseFluid) != 0; }
PX_CUDA_CALLABLE inline bool PxGetSelfCollide(physx::PxU32 phase) { return (phase & physx::PxParticlePhaseFlag::eParticlePhaseSelfCollide) != 0; }
PX_CUDA_CALLABLE inline bool PxGetSelfCollideFilter(physx::PxU32 phase) { return (phase & physx::PxParticlePhaseFlag::eParticlePhaseSelfCollideFilter) != 0; }
#if !PX_DOXYGEN
namespace physx
{
#endif
class PxNeighborhoodIterator
{
const PxU32* PX_RESTRICT mCollisionIndex;
PxU32 mMaxParticles;
public:
PX_CUDA_CALLABLE PxNeighborhoodIterator(const PxU32* PX_RESTRICT collisionIndex, PxU32 maxParticles) :
mCollisionIndex(collisionIndex), mMaxParticles(maxParticles)
{
}
PX_CUDA_CALLABLE PxU32 getNextIndex()
{
PxU32 result = *mCollisionIndex;
mCollisionIndex += mMaxParticles;
return result;
}
PX_INLINE PxNeighborhoodIterator(const PxNeighborhoodIterator& params)
{
mCollisionIndex = params.mCollisionIndex;
mMaxParticles = params.mMaxParticles;
}
PX_INLINE void operator = (const PxNeighborhoodIterator& params)
{
mCollisionIndex = params.mCollisionIndex;
mMaxParticles = params.mMaxParticles;
}
};
struct PxGpuParticleData
{
PxReal mGridCellWidth;
PxU32 mGridSizeX;
PxU32 mGridSizeY;
PxU32 mGridSizeZ;
PxReal mParticleContactDistance;
PxReal mParticleContactDistanceInv;
PxReal mParticleContactDistanceSq;
PxU32 mNumParticles;
PxU32 mMaxParticles;
PxU32 mMaxNeighborhood;
PxU32 mMaxDiffuseParticles;
PxU32 mNumParticleBuffers;
};
class PxGpuParticleSystem
{
public:
PX_FORCE_INLINE PxU32 getNumCells() { return mCommonData.mGridSizeX * mCommonData.mGridSizeY * mCommonData.mGridSizeZ; }
/* Unsorted particle state buffers */
float4* mUnsortedPositions_InvMass;
float4* mUnsortedVelocities;
PxU32* mUnsortedPhaseArray;
/* Sorted particle state buffers. Sorted by increasing hash value in background grid. */
float4* mSortedPositions_InvMass;
float4* mSortedVelocities;
PxU32* mSortedPhaseArray;
/* Mappings to/from sorted particle states */
PxU32* mUnsortedToSortedMapping;
PxU32* mSortedToUnsortedMapping;
/* Neighborhood information */
PxU32* mParticleSelfCollisionCount;
PxU32* mCollisionIndex;
PxsParticleMaterialData* mParticleMaterials;
PxGpuParticleData mCommonData;
PX_CUDA_CALLABLE PxNeighborhoodIterator getIterator(PxU32 particleId) const
{
return PxNeighborhoodIterator(mCollisionIndex + particleId, mCommonData.mMaxParticles);
}
};
#if !PX_DOXYGEN
} // namespace physx
#endif
#endif
#endif