MainFunctionStart();
ss << "\n  ";
ss << shader_helper.GuardAgainstOutOfBoundsWorkgroupSizes("uniforms.output_size");
ss << ";\n\n  let constant_value =\n";
if (__param_is_float16) {
ss << "      bitcast<vec2<f16>>(uniforms.constant_value)[0];\n";
} else {
ss << "      bitcast<output_value_t>(uniforms.constant_value);\n";
}
if (__param_dim_value_zero) {
ss << "  output[global_idx] = constant_value;\n";
} else {
ss << "  let output_indices = ";
ss << __var_output.OffsetToIndices("global_idx");
ss << ";\n  var input_index = u32(0);\n  var use_pad_value = false;\n  var in_coord = i32(0);\n\n  for (var dim = 0; dim < ";
ss << __var_output.Rank();
ss << " && !use_pad_value; dim++) {\n    let output_index = i32(";
ss << GetElementAt("output_indices", "dim", __var_output.Rank());
ss << ");\n    let lower_pads = ";
ss << GetElementAt("uniforms.lower_pads", "dim", __var_output.Rank());
ss << ";\n    let data_shape = i32(";
ss << GetElementAt("uniforms.data_shape", "dim", __var_output.Rank());
ss << ");\n";
if (__param_pad_mode == 0) {
ss << "    if (output_index < lower_pads || output_index >= data_shape + lower_pads) {\n        use_pad_value = true;\n";
} else if (__param_pad_mode == 1) {
ss << "    if (output_index < lower_pads) {\n      in_coord = 0;\n    } else if (output_index >= data_shape + lower_pads) {\n      in_coord = data_shape - 1;\n";
} else if (__param_pad_mode == 2) {
ss << "    if (output_index < lower_pads || output_index >= data_shape + lower_pads) {\n      in_coord = output_index - lower_pads;\n      if (in_coord < 0) {\n        in_coord = -in_coord;\n      }\n      let _2n_1 = 2 * (data_shape - 1);\n      in_coord = in_coord % _2n_1;\n      if (in_coord >= data_shape) {\n        in_coord = _2n_1 - in_coord;\n      }\n";
} else {
ss << "    if (output_index < lower_pads) {\n      in_coord = data_shape + output_index - lower_pads;\n    } else if (output_index >= data_shape + lower_pads) {\n      in_coord = output_index - data_shape - lower_pads;\n";
}
ss << "    } else {\n        in_coord = output_index - lower_pads;\n    }\n\n    input_index += select(u32(in_coord)\n";
if (__var_output.Rank() > 1) {
ss << "        * ";
ss << GetElementAt("uniforms.data_stride", "dim", __var_output.Rank() - 1);
ss << "\n";
}
ss << "        , u32(in_coord), dim == ";
ss << __var_output.Rank();
ss << " - 1);\n  }\n\n  ";
ss << __var_output.SetByOffset("global_idx", "select(data[input_index], constant_value, use_pad_value)");
ss << ";\n";
}
MainFunctionEnd();
ss << "\n";