get opengl texture data into libtorch tensor via cuda, then write the tensor data to new texture

#include <torch/torch.h>

void get_texture_data(GLuint texture, 
                      int width, int height, 
                      torch::Tensor &out);

void set_texture_data(GLuint texture, 
                      int width, int height, 
                      torch::Tensor &in);