Initial commit

utils/csrc/sampling.c

@@ -0,0 +1,37 @@
+#include <THC/THC.h>
+
+#include "sampling_gpu.h"
+
+extern THCState *state;
+
+int gather_points_wrapper(int b, int n, int c, int npoints,
+			  THCudaTensor *points_tensor,
+			  THCudaIntTensor *idx_tensor,
+			  THCudaTensor *out_tensor) {
+
+	const float *points = THCudaTensor_data(state, points_tensor);
+	const int *idx = THCudaIntTensor_data(state, idx_tensor);
+	float *out = THCudaTensor_data(state, out_tensor);
+
+	cudaStream_t stream = THCState_getCurrentStream(state);
+
+	gather_points_kernel_wrapper(b, n, c, npoints, points, idx, out,
+				     stream);
+	return 1;
+}
+
+int furthest_point_sampling_wrapper(int b, int n, int m,
+				    THCudaTensor *points_tensor,
+				    THCudaTensor *temp_tensor,
+				    THCudaIntTensor *idx_tensor) {
+
+	const float *points = THCudaTensor_data(state, points_tensor);
+	float *temp = THCudaTensor_data(state, temp_tensor);
+	int *idx = THCudaIntTensor_data(state, idx_tensor);
+
+	cudaStream_t stream = THCState_getCurrentStream(state);
+
+	furthest_point_sampling_kernel_wrapper(b, n, m, points, temp, idx,
+					       stream);
+	return 1;
+}