PxPhysicsGpu

Defined in include/gpu/PxPhysicsGpu.h

class PxPhysicsGpu

Public Functions

virtual PxIsosurfaceExtractor *createDenseGridIsosurfaceExtractor(PxCudaContextManager *cudaContextManager, const PxBounds3 &worldBounds, PxReal cellSize, const PxIsosurfaceParams &isosurfaceParams, PxU32 maxNumParticles, PxU32 maxNumVertices = 512 * 1024, PxU32 maxNumTriangles = 1024 * 1024) = 0

Creates an isosurface extractor operating on a dense grid.

Parameters

  • cudaContextManager – [in] A cuda context manager

  • worldBounds – [in] The bounds of the internally used dense grid. The isosurface can only be generated inside those bounds.

  • cellSize – [in] The size of a single grid cell

  • isosurfaceParams – [in] The isosurface parameters to control the isolevel etc.

  • maxNumParticles – [in] The maximal number of particles that can be processed

  • maxNumVertices – [in] The maximal number of vertices the output buffer can hold

  • maxNumTriangles – [in] The maximal number of triangles the output buffer can hold

virtual PxSparseGridIsosurfaceExtractor *createSparseGridIsosurfaceExtractor(PxCudaContextManager *cudaContextManager, const PxSparseGridParams &sparseGridParams, const PxIsosurfaceParams &isosurfaceParams, PxU32 maxNumParticles, PxU32 maxNumVertices = 512 * 1024, PxU32 maxNumTriangles = 1024 * 1024) = 0

Creates an isosurface extractor operating on a sparse grid.

Parameters

  • cudaContextManager – [in] A cuda context manager

  • sparseGridParams – [in] The sparse grid parameters defining the cell size etc.

  • isosurfaceParams – [in] The isosurface parameters to control the isolevel etc.

  • maxNumParticles – [in] The maximal number of particles that can be processed

  • maxNumVertices – [in] The maximal number of vertices the output buffer can hold

  • maxNumTriangles – [in] The maximal number of triangles the output buffer can hold

virtual PxAnisotropyGenerator *createAnisotropyGenerator(PxCudaContextManager *cudaContextManager, PxU32 maxNumParticles, PxReal anisotropyScale = 1.0f, PxReal minAnisotropy = 0.1f, PxReal maxAnisotropy = 2.0f) = 0

Creates an anisotropy generator.

Parameters

  • cudaContextManager – [in] A cuda context manager

  • maxNumParticles – [in] The number of particles

  • anisotropyScale – [in] A uniform scaling factor to increase or decrease anisotropy

  • minAnisotropy – [in] The minimum scaling factor in any dimension that anisotropy can have

  • maxAnisotropy – [in] The maximum scaling factor in any dimension that anisotropy can have

virtual PxSmoothedPositionGenerator *createSmoothedPositionGenerator(PxCudaContextManager *cudaContextManager, PxU32 maxNumParticles, PxReal smoothingStrength = 0.5f) = 0

Creates a smoothed position generator.

Parameters

  • cudaContextManager – [in] A cuda context manager

  • maxNumParticles – [in] The number of particles

  • smoothingStrength – [in] Controls the strength of the smoothing effect

virtual PxParticleNeighborhoodProvider *createParticleNeighborhoodProvider(PxCudaContextManager *cudaContextManager, const PxU32 maxNumParticles, const PxReal cellSize, const PxU32 maxNumSparseGridCells = 262144) = 0

Creates a neighborhood provider.

Parameters

  • cudaContextManager – [in] A cuda context manager

  • maxNumParticles – [in] The number of particles

  • cellSize – [in] The grid cell size. Should be equal to 2*contactOffset for PBD particle systems.

  • maxNumSparseGridCells – [in] The maximal number of cells the internally used sparse grid can provide

virtual PxArrayConverter *createArrayConverter(PxCudaContextManager *cudaContextManager) = 0

Creates an array converter.

If not used anymore, the caller needs to delete the returned pointer.

Parameters

cudaContextManager – [in] A cuda context manager

virtual PxLineStripSkinning *createLineStripSkinning(PxCudaContextManager *cudaContextManager) = 0

Creates an line strip embedding helper.

If not used anymore, the caller needs to delete the returned pointer.

Parameters

cudaContextManager – [in] A cuda context manager

Returns

Pointer to a new instance of a PxLineStripSkinning

virtual PxSDFBuilder *createSDFBuilder(PxCudaContextManager *cudaContextManager) = 0

Creates sdf builder to construct sdfs quickly on the GPU.

If not used anymore, the caller needs to delete the returned pointer.

Parameters

cudaContextManager – [in] A cuda context manager

Returns

Pointer to a new instance of a PxSDFBuilder

virtual PxU64 estimateSceneCreationGpuMemoryRequirements(const PxSceneDesc &sceneDesc) = 0

Estimates the amount of GPU memory needed to create a scene for the given descriptor.

Note

While this is a conservative estimate, scene allocation may still fail even though there is enough memory - this function does not contain the potential overhead coming from the CUDA allocator. Additionally, there may be fragmentation issues. Generally, this is not an issue for scene allocation sizes < 500Mb, but may become problematic for larger scenes.

Parameters

sceneDesc – [in] a valid scene desriptor

Returns

A conservative estimate for the amount of GPU memory needed to create a scene for the given descriptor.

virtual void release() = 0
inline virtual ~PxPhysicsGpu()