用PreviewRenderUtility就不用自己再去创建摄像机来做模型在Editor下的预览了

 

需要注意，默认是用场景天空盒和场景灯光。参考ShaderForge编辑器的做法，配置自定义灯光

这些Unity都有提供接口，不用自己再去创建

using UnityEngine;using System.Collections;using UnityEditor;using UnityEditorInternal;public class Foo : EditorWindow{    Mesh mPreviewMesh;    Material mPreviewMaterial;    PreviewRenderUtility mPreviewRenderUtility;    [MenuItem("Tools/Foo")]    static void Setup()    {        GetWindow
     
      ();    }    void OnGUI()    {        if (mPreviewRenderUtility == null)        {            mPreviewRenderUtility = new PreviewRenderUtility();            mPreviewRenderUtility.m_Camera.farClipPlane = 500;            mPreviewRenderUtility.m_Camera.clearFlags = CameraClearFlags.SolidColor;            mPreviewRenderUtility.m_Camera.transform.position = new Vector3(0, 0, -10);            var go = GameObject.CreatePrimitive(PrimitiveType.Cube);            var meshFilter = go.GetComponent
      
       ();            mPreviewMesh = meshFilter.sharedMesh;            mPreviewMaterial = go.GetComponent
       
        ().sharedMaterial;            DestroyImmediate(go);        }        var drawRect = new Rect(0, 0, 100, 100);        mPreviewRenderUtility.BeginPreview(drawRect, GUIStyle.none);        InternalEditorUtility.SetCustomLighting(mPreviewRenderUtility.m_Light, new Color(0.6f, 0.6f, 0.6f, 1f));        mPreviewRenderUtility.DrawMesh(mPreviewMesh, Matrix4x4.TRS(Vector3.zero, Quaternion.Euler(30, 45, 0), Vector3.one), mPreviewMaterial, 0);        mPreviewRenderUtility.m_Camera.Render();        var texture = mPreviewRenderUtility.EndPreview();        InternalEditorUtility.RemoveCustomLighting();        GUI.Box(drawRect, texture);    }}
       
      
     

 

 

效果：

 

 

天空盒的话可以自行配置一个带Cubemap的shader：