test/Assets/PerfectWorld/Scripts/Task/SizeTest.cs

using System.Runtime.InteropServices;
using UnityEngine;

public class SizeTest : MonoBehaviour
{
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public struct TestStruct
    {
        public int intValue;
        public float floatValue;
        [MarshalAs(UnmanagedType.U1)]
        public bool byteValue;

        
    }
    
    [ContextMenu("Test Size")]
    void TestSize()
    {
        TestStruct q = new();
        
        var size =  Marshal.SizeOf(typeof(TestStruct));
        // byte[] data = new byte[Marshal.SizeOf(typeof(TestStruct))];
        // q =  Marshal.PtrToStructure<TestStruct>();
        Debug.Log("Size of TestStruct: " + size);
    }
}