MeshRenderer在Inspector设置SorttingLayerName和SorttingOrder¶
MeshRenderer和SkinnedMeshRenderer在Inspector增加sortingLayerName和sortingOrder选项。
Unity的SortingLayer在MeshRenderer和SkinnedMeshRendererEditor中的Inspector面板不可以配置，而想要调整SortingLayer或者sortingOrder则需要在脚本中设置比如脚本的Awake或者Start，这样非常不灵活。
通过Hooker钩子修改Inspector的MeshRendererEditor和SkinnedMeshRendererEditor而达到SortingLayer参数暴露在编辑器中，这样可以直接修改了在物体的MeshRenderer和SkinnedMeshRenderer组件上，修改后的值自动存储在序列化数据里。
这里使用了一个Githubh的插件 MonoHook，请自行下载，然后导入到工程中。
- 首先需要下载MonoHook插件，导入到工程中，这里的代码需要依赖这个插件。
- 然后将文件
RendererLayerEditor.cs和InitializeOnLoadTool.cs放入Editor目录下，这个是编辑器代码文件。
RendererLayerEditor.cs文件：
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
using System;
using System.Reflection;
using UnityEditorInternal;
public class RendererLayerEditor
{
public static void Register()
{
// MeshRendererEditor
Type type = typeof(AssetDatabase).Assembly.GetType("UnityEditor.MeshRendererEditor");
MethodInfo method = type.GetMethod("OnInspectorGUI", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
type = typeof(RendererLayerEditor);
MethodInfo methodReplacement = type.GetMethod("SubRendererOnInspectorGUI", BindingFlags.Static | BindingFlags.NonPublic);
MethodInfo methodProxy = type.GetMethod("SubRendererOnInspectorGUIProxy", BindingFlags.Static | BindingFlags.NonPublic);
MethodHook hooker = new MethodHook(method, methodReplacement, methodProxy);
hooker.Install();
// SkinnedMeshRendererEditor
type = typeof(AssetDatabase).Assembly.GetType("UnityEditor.SkinnedMeshRendererEditor");
method = type.GetMethod("OnInspectorGUI", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
type = typeof(RendererLayerEditor);
methodReplacement = type.GetMethod("SubRendererOnInspectorGUI", BindingFlags.Static | BindingFlags.NonPublic);
methodProxy = type.GetMethod("SubRendererOnInspectorGUIProxyE", BindingFlags.Static | BindingFlags.NonPublic);
hooker = new MethodHook(method, methodReplacement, methodProxy);
hooker.Install();
}
static void SubRendererOnInspectorGUI(Editor editor)
{
//Debug.Log(editor.target);
if (editor.target != null)
{
var renderer = editor.target as Renderer;
var options = GetSortingLayerNames();
var picks = new int[options.Length];
//Debug.Log($"renderer.sortingLayerName:{renderer.sortingLayerName},options.len:{options.Length}");
var name = renderer.sortingLayerName;
var choice = -1;
for (int i = 0; i < options.Length; i++)
{
picks[i] = i;
if (name == options[i]) choice = i;
}
choice = EditorGUILayout.IntPopup("Sorting Layer", choice, options, picks);
string oldLayerName = renderer.sortingLayerName;
renderer.sortingLayerName = options[choice];
int order = renderer.sortingOrder;
renderer.sortingOrder = EditorGUILayout.IntField("Sorting Order", renderer.sortingOrder);
if(renderer.sortingOrder!=order||renderer.sortingLayerName!= oldLayerName)
{
EditorUtility.SetDirty(renderer);
}
if(editor.target is MeshRenderer)
{
SubRendererOnInspectorGUIProxy(editor);
}
else
{
SubRendererOnInspectorGUIProxyE(editor);
}
}
}
static void SubRendererOnInspectorGUIProxy(Editor editor)
{
}
static void SubRendererOnInspectorGUIProxyE(Editor editor)
{
}
public static string[] GetSortingLayerNames()
{
//SortingLayer.layers
Type internalEditorUtilityType = typeof(InternalEditorUtility);
PropertyInfo sortingLayersProperty = internalEditorUtilityType.GetProperty("sortingLayerNames", BindingFlags.Static | BindingFlags.NonPublic);
return (string[])sortingLayersProperty.GetValue(null, new object[0]);
}
}
MonoHook插件需要打开unsafe宏定义，Build Setting-->Player Setting--> 勾选 Allow unsafe Code 如图：
InitializeOnLoadTool.cs文件：
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
using System;
using System.Reflection;
using UnityEditorInternal;
[InitializeOnLoad] // 最好Editor启动及重新编译完毕就执行
public class InitializeOnLoadTool
{
static bool register = false;
static InitializeOnLoadTool()
{
if (!register)
{
RendererLayerEditor.Register();
register =true;
}
}
}
效果：
MeshRenderer
SkinnedMeshRenderer
