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DragGAN / stylegan2 /op /fused_bias_act.cpp

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ab9cd73 12 months ago

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	#include <ATen/ATen.h>
	#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_INPUT(input);
	CHECK_INPUT(bias);

	at::DeviceGuard guard(input.device());

	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)");
	}