Create vtoonify/model/stylegan/op_gpu/upfirdn2d.cpp

vtoonify/model/stylegan/op_gpu/upfirdn2d.cpp

@@ -0,0 +1,31 @@
+#include <ATen/ATen.h>
+#include <torch/extension.h>
+
+torch::Tensor upfirdn2d_op(const torch::Tensor &input,
+                           const torch::Tensor &kernel, int up_x, int up_y,
+                           int down_x, int down_y, int pad_x0, int pad_x1,
+                           int pad_y0, int pad_y1);
+
+#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 upfirdn2d(const torch::Tensor &input, const torch::Tensor &kernel,
+                        int up_x, int up_y, int down_x, int down_y, int pad_x0,
+                        int pad_x1, int pad_y0, int pad_y1) {
+  CHECK_INPUT(input);
+  CHECK_INPUT(kernel);
+
+  at::DeviceGuard guard(input.device());
+
+  return upfirdn2d_op(input, kernel, up_x, up_y, down_x, down_y, pad_x0, pad_x1,
+                      pad_y0, pad_y1);
+}
+
+PYBIND11_MODULE(TORCH_EXTENSION_NAME, m) {
+  m.def("upfirdn2d", &upfirdn2d, "upfirdn2d (CUDA)");
+}