混用ngui和ugui渲染顺序问题

http://blog.csdn.net/xtxy/article/details/38332801

为NGUI panel 添加 sorting layer

接着上一篇文章的问题，看到了老外做的一个补丁，为ngui panel添加sorting layer，我也照着做了一个，这样ngui和unity2d就可以完全融合在一起了，层次关系可以任意设置。

ngui的版本为3.6.8，在其中添加代码：

文件：UIDrawCall.cs  109行左右

/// <summary>
/// Renderer's sorting order, to be used with Unity's 2D system.
/// </summary>

public int sortingOrder
{
    get { return (mRenderer != null) ? mRenderer.sortingOrder : 0; }
    set { if (mRenderer != null && mRenderer.sortingOrder != value) mRenderer.sortingOrder = value; }
}

// added by Clark
public string sortingLayerName
{
    get { return (mRenderer != null) ? mRenderer.sortingLayerName : "default"; }
    set
    {
        if(mRenderer != null && mRenderer.sortingLayerName != value)
        {
            mRenderer.sortingLayerName = value;
if UNITY_EDITOR
            UnityEditor.EditorUtility.SetDirty(gameObject);
endif
        }
    }
}
// added end by Clark

712行左右

/// <summary>
/// Create a new draw call, reusing an old one if possible.
/// </summary>

static UIDrawCall Create (string name, UIPanel pan, Material mat, Texture tex, Shader shader)
{
    UIDrawCall dc = Create(name);
    dc.gameObject.layer = pan.cachedGameObject.layer;
    dc.baseMaterial = mat;
    dc.mainTexture = tex;
    dc.shader = shader;
    dc.renderQueue = pan.startingRenderQueue;
    dc.sortingOrder = pan.sortingOrder;
    // added by Clark
    dc.sortingLayerName = pan.sortingLayerName;
    // added end by Clark
    dc.manager = pan;
    return dc;
}

文件UIPanel.cs 130行左右

// Clipping rectangle
[HideInInspector][SerializeField] UIDrawCall.Clipping mClipping = UIDrawCall.Clipping.None;
[HideInInspector][SerializeField] Vector4 mClipRange = new Vector4(0f, 0f, 300f, 200f);
[HideInInspector][SerializeField] Vector2 mClipSoftness = new Vector2(4f, 4f);
[HideInInspector][SerializeField] int mDepth = 0;
[HideInInspector][SerializeField] int mSortingOrder = 0;
// added by Clark
[HideInInspector][SerializeField] string mSortingLayerName;
// added end by Clark

252行左右

public int sortingOrder
{
    get
    {
        return mSortingOrder;
    }
    set
    {
        if (mSortingOrder != value)
        {
            mSortingOrder = value;
if UNITY_EDITOR
            NGUITools.SetDirty(this);
endif
            UpdateDrawCalls();
        }
    }
}

// added by Clark
public string sortingLayerName
{
    get { return mSortingLayerName; }
    set
    {
        if(mSortingLayerName != value)
        {
            mSortingLayerName = value;
if UNITY_EDITOR
            NGUITools.SetDirty(this);
endif
            UpdateDrawCalls();
        }
    }
}
// added end by Clark

1432行左右，在函数UpdateDrawCalls里面

for (int i = 0; i < drawCalls.Count; ++i)
{
    UIDrawCall dc = drawCalls[i];

    Transform t = dc.cachedTransform;
    t.position = pos;
    t.rotation = rot;
    t.localScale = scale;

    dc.renderQueue = (renderQueue == RenderQueue.Explicit) ? startingRenderQueue : startingRenderQueue + i;
    dc.alwaysOnScreen = alwaysOnScreen &&
        (mClipping == UIDrawCall.Clipping.None || mClipping == UIDrawCall.Clipping.ConstrainButDontClip);
    dc.sortingOrder = mSortingOrder;
    // added by Clark
    dc.sortingLayerName = mSortingLayerName;
    // added end by Clark
}

文件UIPanelInspector.cs 9行

using UnityEngine;
using UnityEditor;
using System.Collections.Generic;
// added by Clark
using System;
using System.Reflection;
using UnityEditorInternal;
// added end by Clark

39行左右

UIWidget.Pivot mDragPivot = UIWidget.Pivot.Center;
GUIStyle mStyle0 = null;
GUIStyle mStyle1 = null;
// added by Clark
string[] sortingLayerNames;
// added end by Clark

49行左右

protected override void OnEnable ()
{
    base.OnEnable();
    mPanel = target as UIPanel;

    // added by Clark
    sortingLayerNames = GetSortingLayerNames();
    // added end by Clark
}

574行左右

GUI.changed = false;
int so = EditorGUILayout.IntField("Sort Order", mPanel.sortingOrder, GUILayout.Width(120f));
if (GUI.changed) mPanel.sortingOrder = so;

// added by Clark
int sortingLayerIndex = GetSortingLayerIndex(mPanel.sortingLayerName);
int newSortingLayerIndex = EditorGUILayout.Popup("Sorting Layer", sortingLayerIndex, sortingLayerNames);
if(sortingLayerIndex != newSortingLayerIndex)
{
    mPanel.sortingLayerName = sortingLayerNames[newSortingLayerIndex];
}
// added end by Clark

785行左右，在文件最后

// added by Clark
string[] GetSortingLayerNames()
{
    Type t = typeof(InternalEditorUtility);
    PropertyInfo prop = t.GetProperty("sortingLayerNames", BindingFlags.Static | BindingFlags.NonPublic);
    return (string[])prop.GetValue(null, null);
}

int GetSortingLayerIndex(string layerName)
{
    for(int i = 0; i < sortingLayerNames.Length; i++)
    {
        if(sortingLayerNames[i] == layerName)
        {
            return i;
        }
    }

    return 0;
}
// added end by Clark

这样，在UIPanel里面就多一个选项sorting layer：

完整的修改好的文件我放到我的资源里面了。