InterpolateKernel.h

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// Copyright (c) 2018-2026 www.open3d.org
// SPDX-License-Identifier: MIT
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//***************************************************************************************/
//
//    Based on Pointnet2 Library (MIT License):
//    https://github.com/sshaoshuai/Pointnet2.PyTorch
//
//    Copyright (c) 2019 Shaoshuai Shi
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#pragma once
 
void three_nn_launcher(int b,
                       int n,
                       int m,
                       const float *unknown,
                       const float *known,
                       float *dist2,
                       int *idx);
 
void three_interpolate_launcher(int b,
                                int c,
                                int m,
                                int n,
                                const float *points,
                                const int *idx,
                                const float *weight,
                                float *out);
 
void three_interpolate_grad_launcher(int b,
                                     int c,
                                     int n,
                                     int m,
                                     const float *grad_out,
                                     const int *idx,
                                     const float *weight,
                                     float *grad_points);
 
void three_nn_launcher_cpu(int b,
                           int n,
                           int m,
                           const float *unknown,
                           const float *known,
                           float *dist2,
                           int *idx);
 
void three_interpolate_launcher_cpu(int b,
                                    int c,
                                    int m,
                                    int n,
                                    const float *points,
                                    const int *idx,
                                    const float *weight,
                                    float *out);
 
void three_interpolate_grad_launcher_cpu(int b,
                                         int c,
                                         int n,
                                         int m,
                                         const float *grad_out,
                                         const int *idx,
                                         const float *weight,
                                         float *grad_points);
 
#ifdef BUILD_SYCL_MODULE
void three_nn_launcher_sycl(int b,
                            int n,
                            int m,
                            const float *unknown,
                            const float *known,
                            float *dist2,
                            int *idx);
 
void three_interpolate_launcher_sycl(int b,
                                     int c,
                                     int m,
                                     int n,
                                     const float *points,
                                     const int *idx,
                                     const float *weight,
                                     float *out);
 
void three_interpolate_grad_launcher_sycl(int b,
                                          int c,
                                          int n,
                                          int m,
                                          const float *grad_out,
                                          const int *idx,
                                          const float *weight,
                                          float *grad_points);
#endif