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// from https://github.com/rosinality/stylegan2-pytorch/blob/master/op/fused_bias_act.cpp
#include <torch/extension.h>
torch::Tensor fused_bias_act_op(const torch::Tensor& input,
const torch::Tensor& bias,
const torch::Tensor& refer,
int act, int grad, float alpha, float scale);
#define CHECK_CUDA(x) TORCH_CHECK(x.type().is_cuda(), #x " must be a CUDA tensor")
#define CHECK_CONTIGUOUS(x) TORCH_CHECK(x.is_contiguous(), #x " must be contiguous")
#define CHECK_INPUT(x) CHECK_CUDA(x); CHECK_CONTIGUOUS(x)
torch::Tensor fused_bias_act(const torch::Tensor& input,
const torch::Tensor& bias,
const torch::Tensor& refer,
int act, int grad, float alpha, float scale) {
CHECK_CUDA(input);
CHECK_CUDA(bias);
return fused_bias_act_op(input, bias, refer, act, grad, alpha, scale);
}
PYBIND11_MODULE(TORCH_EXTENSION_NAME, m) {
m.def("fused_bias_act", &fused_bias_act, "fused bias act (CUDA)");
}
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