# Unity 如何获取Texture 的内存大小
Unity 如何获取Texture 的内存大小在Unity中，要获取Texture的内存文件大小，可以使用UnityEditor.TextureUtil类中的一些函数。这些函数提供了获取存储内存大小和运行时内存大小的方法。由于UnityEditor.TextureUtil是一个内部类，我们需要使用反射来访问它。
步骤
[*]导入UnityEditor命名空间和System.Reflection命名空间：
using UnityEditor;
using System.Reflection;
[*]创建一个函数来获取Texture的内存文件大小：
public static long GetTextureFileSize(Texture2D texture)
{
long fileSize = 0;
// 使用反射获取UnityEditor.TextureUtil类的Type
Type textureUtilType = typeof(TextureImporter).Assembly.GetType("UnityEditor.TextureUtil");
// 使用反射获取UnityEditor.TextureUtil类的GetStorageMemorySizeLong方法
MethodInfo getStorageMemorySizeLongMethod = textureUtilType.GetMethod("GetStorageMemorySizeLong", BindingFlags.Static | BindingFlags.Public);
// 调用GetStorageMemorySizeLong方法获取存储内存大小
fileSize = (long)getStorageMemorySizeLongMethod.Invoke(null, new object[] { texture });
return fileSize;
}
[*]创建一个函数来获取Texture的运行时内存大小：
public static long GetTextureRuntimeMemorySize(Texture2D texture)
{
long memorySize = 0;
// 使用反射获取UnityEditor.TextureUtil类的Type
Type textureUtilType = typeof(TextureImporter).Assembly.GetType("UnityEditor.TextureUtil");
// 使用反射获取UnityEditor.TextureUtil类的GetRuntimeMemorySizeLong方法
MethodInfo getRuntimeMemorySizeLongMethod = textureUtilType.GetMethod("GetRuntimeMemorySizeLong", BindingFlags.Static | BindingFlags.Public);
// 调用GetRuntimeMemorySizeLong方法获取运行时内存大小
memorySize = (long)getRuntimeMemorySizeLongMethod.Invoke(null, new object[] { texture });
return memorySize;
}示例代码
示例 1：获取Texture的存储内存大小
using UnityEngine;using UnityEditor;
using System.Reflection;public class TextureSizeExample : MonoBehaviour{ private Texture2D texture; private void Start() { long fileSize = GetTextureFileSize(texture); Debug.Log("Texture File Size: " + fileSize + " bytes"); } private static long GetTextureFileSize(Texture2D texture) { long fileSize = 0; Type textureUtilType = typeof(TextureImporter).Assembly.GetType("UnityEditor.TextureUtil"); MethodInfo getStorageMemorySizeLongMethod = textureUtilType.GetMethod("GetStorageMemorySizeLong", BindingFlags.Static | BindingFlags.Public); fileSize = (long)getStorageMemorySizeLongMethod.Invoke(null, new object[] { texture }); return fileSize; }}示例 2：获取Texture的运行时内存大小
using UnityEngine;using UnityEditor;
using System.Reflection;public class TextureSizeExample : MonoBehaviour{ private Texture2D texture; private void Start() { long memorySize = GetTextureRuntimeMemorySize(texture); Debug.Log("Texture Runtime Memory Size: " + memorySize + " bytes"); } private static long GetTextureRuntimeMemorySize(Texture2D texture) { long memorySize = 0; Type textureUtilType = typeof(TextureImporter).Assembly.GetType("UnityEditor.TextureUtil"); MethodInfo getRuntimeMemorySizeLongMethod = textureUtilType.GetMethod("GetRuntimeMemorySizeLong", BindingFlags.Static | BindingFlags.Public); memorySize = (long)getRuntimeMemorySizeLongMethod.Invoke(null, new object[] { texture }); return memorySize; }}示例 3：同时获取Texture的存储内存大小和运行时内存大小
using UnityEngine;using UnityEditor;
using System.Reflection;public class TextureSizeExample : MonoBehaviour{ private Texture2D texture; private void Start() { long fileSize = GetTextureFileSize(texture); long memorySize = GetTextureRuntimeMemorySize(texture); Debug.Log("Texture File Size: " + fileSize + " bytes"); Debug.Log("Texture Runtime Memory Size: " + memorySize + " bytes"); } private static long GetTextureFileSize(Texture2D texture) { long fileSize = 0; Type textureUtilType = typeof(TextureImporter).Assembly.GetType("UnityEditor.TextureUtil"); MethodInfo getStorageMemorySizeLongMethod = textureUtilType.GetMethod("GetStorageMemorySizeLong", BindingFlags.Static | BindingFlags.Public); fileSize = (long)getStorageMemorySizeLongMethod.Invoke(null, new object[] { texture }); return fileSize; } private static long GetTextureRuntimeMemorySize(Texture2D texture) { long memorySize = 0; Type textureUtilType = typeof(TextureImporter).Assembly.GetType("UnityEditor.TextureUtil"); MethodInfo getRuntimeMemorySizeLongMethod = textureUtilType.GetMethod("GetRuntimeMemorySizeLong", BindingFlags.Static | BindingFlags.Public); memorySize = (long)getRuntimeMemorySizeLongMethod.Invoke(null, new object[] { texture }); return memorySize; }}注意事项
[*]确保在使用反射访问UnityEditor.TextureUtil类之前，已经导入了UnityEditor命名空间和System.Reflection命名空间。
[*]使用反射时，需要使用BindingFlags.Static | BindingFlags.Public来获取静态公共方法。
[*]在示例代码中，我们使用了Texture2D类型的变量来表示Texture，你可以根据实际情况修改代码以适应不同的Texture类型。
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来源:https://www.cnblogs.com/alianblank/archive/2023/08/17/17639067.html
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