diff --git a/examples/print.php b/examples/print.php
index 9759d7d..e8e9fd1 100644
--- a/examples/print.php
+++ b/examples/print.php
@@ -4,16 +4,16 @@ namespace Blobt\Luxcore\scene;
 
 include dirname(dirname(__FILE__)) . "/vendor/autoload.php";
 
-$renderDevices = new RenderDevices();
-$trackerEngine = new TrackerEngine();
 
-$renderEngine = new RenderEngine;
-echo $renderEngine;
+$renderEngineType = new RenderEngine();
+echo $renderEngineType;
 
-$openCL = new OpenCL;
+$openCL = new OpenCL();
 echo $openCL;
 
-$native = new Native;
-echo $native;
+$cpuThreadsCount = new Native(['threadsCount' => 64]);
+
+echo $cpuThreadsCount;
+
 
 ?>
diff --git a/src/scene/Native.php b/src/scene/Native.php
index a6e0727..1e7aae9 100644
--- a/src/scene/Native.php
+++ b/src/scene/Native.php
@@ -8,15 +8,15 @@ class Native extends BaseCfg
     /**
      * @var integer //使用多少线程数
      */
-    private $threadsCount = 4;
+    protected $threadsCount = 4;
 
     /**
      * 在CPU渲染模式下，设置使用多少线程数
      * @var integer $setThreadsCount 传入一个控制使用多少CPU线程数的整数
      */
-    public function setThreadsCount($threadsCount = 4)
+    public function setThreadsCount($count)
     {
-        $this->threadsCount = $threadsCount;
+        $this->threadsCount = $count;
     }
 
 }
diff --git a/src/scene/OpenCL.php b/src/scene/OpenCL.php
index 6b74226..e199ba7 100644
--- a/src/scene/OpenCL.php
+++ b/src/scene/OpenCL.php
@@ -5,61 +5,67 @@ namespace Blobt\Luxcore\scene;
 class OpenCL extends BaseCfg
 {
 
+
+    //打开或关闭
+    const OPEN = 1;
+    const CLOSE = 0;
+    
     /**
      * @var integral 是否使用cpu渲染，默认是
      */
-    private static $cpuUse;
+    protected $cpuUse = self::CLOSE;
 
     /**
      * @var integral 是否使用gpu渲染，默认否
      */
-    private static $gpuUse;
+    protected $gpuUse = self::OPEN;
 
     /**
      * @var string 在GPU渲染模式下，使用哪些GPU设备
      */
-    private $devicesSelect = '10';
+    protected $devicesSelect = '10';
     
     /**
-     * @var integer 在GPU渲染模式下，CPU是否渲染，并以多少线程渲染
+     * @var integral 在GPU渲染模式下，CPU是否渲染，并以多少线程渲染
      */
-    private $nativeThreadsCount = 4;
-
+    protected $nativeThreadsCount = 4;
 
 
     /**
-     * 以 RenderDevices类 的两个静态属性初始化变量 “$cpuUse”和“$gpuUse”参数
+     * 使用cpu渲染
      */
-    public function __construct()
+    public function useCpu()
     {
-        self::refreshConfig();
+        $this->cpuUse = self::OPEN;
+        $this->gpuUse = self::CLOSE;
     }
 
     /**
-     * 从 RenderDevices类 的两个静态属性刷新变量 “$cpuUse”和“$gpuUse”参数
+     * 使用gpu渲染
      */
-    public static function refreshConfig()
+    public function useGpu()
     {
-        self::$cpuUse =  RenderDevices::$cpuSwitch;
-        self::$gpuUse =  RenderDevices::$gpuSwitch;
+        $this->cpuUse = self::CLOSE;
+        $this->gpuUse = self::OPEN;
     }
 
+
     /**
      * 在GPU渲染模式下，设置使用哪些GPU设备
-     * @var string $devicesSelect 传入一个控制使用哪些GPU设备的字符串
+     * @var string $gpuIdStr 传入一个控制使用哪些GPU设备的字符串
      */
-    public function selectDevices($devicesSelect = '10')
+    public function selectDevices($gpuIdStr)
     {
-        $this->devicesSelect = $devicesSelect;
+        $this->devicesSelect = $gpuIdStr;
     }
 
     /**
      * 在GPU渲染模式下，设置CPU是否渲染，并以多少线程渲染
      * @var integer $nativeThreadsCount 传入一个控制CPU是否渲染，并以多少线程渲染的整数
      */
-    public function setNativeThreadsCount($nativeThreadsCount = 4)
+    public function setNativeThreadsCount($count)
     {
-        $this->nativeThreadsCount = $nativeThreadsCount;
+        $this->nativeThreadsCount = $count;
     }
 
 }
diff --git a/src/scene/RenderDevices.php b/src/scene/RenderDevices.php
deleted file mode 100644
index 60d8659..0000000
--- a/src/scene/RenderDevices.php
+++ /dev/null
@@ -1,46 +0,0 @@
-<?php
-
-namespace Blobt\Luxcore\scene;
-
-class RenderDevices extends BaseCfg
-{
-
-    public function __toString()
-    {
-        return "错误，不能返回当前类的属性。\n";
-    }
-
-    //打开或关闭
-    const OPEN = 1;
-    const CLOSE = 0;
-
-    /**
-     * @var integral 是否使用cpu渲染，默认是
-     */
-    public static $cpuSwitch = self::OPEN;
-
-    /**
-     * @var integral 是否使用gpu渲染，默认否
-     */
-    public static $gpuSwitch = self::CLOSE;
-
-
-    /**
-     * 使用cpu渲染
-     */
-    public function useCpu()
-    {
-        self::$cpuSwitch = self::OPEN;
-        self::$gpuSwitch = self::CLOSE;
-    }
-
-    /**
-     * 使用gpu渲染
-     */
-    public function useGpu()
-    {
-        self::$cpuSwitch = self::CLOSE;
-        self::$gpuSwitch = self::OPEN;
-    }
-
-}
diff --git a/src/scene/RenderEngine.php b/src/scene/RenderEngine.php
index cddf724..54892b6 100644
--- a/src/scene/RenderEngine.php
+++ b/src/scene/RenderEngine.php
@@ -5,48 +5,18 @@ namespace Blobt\Luxcore\scene;
 class RenderEngine extends BaseCfg
 {
         
-    //打开或关闭
-    const OPEN = 1;
-    const CLOSE = 0;
-
     /**
      * @var string 使用何种渲染引擎
      */
-    private static $type = 'PATHOCL';
-
-    public function __construct()
-    {
-        self::refreshConfig();
-    }
+    private $type = 'PATHOCL';
 
     /**
-     * 更新字符串变量“$type”
+     * 设置渲染引擎类型
+     * @var string $engineStr 传入一个表示渲染引擎类型的字符串
      */
-    public static function refreshConfig()
+    public function setRenderEngineType($engineStr)
     {
-        
-        if( TrackerEngine::$Engine == 'PATH')
-        {
-            self::$type = TrackerEngine::$Engine;
-            if( RenderDevices::$cpuSwitch == self::OPEN )
-            {
-                self::$type = self::$type.'CPU';
-            }
-            else if ( RenderDevices::$gpuSwitch == self::OPEN )
-            {
-                self::$type = self::$type.'CPU';
-            }
-            else;            
-        }
-        else if( TrackerEngine::$Engine == 'BIDIR')
-        {
-            self::$type = TrackerEngine::$Engine;
-            if( RenderDevices::$cpuSwitch == self::OPEN )
-            {
-                self::$type = self::$type.'CPU';
-            }
-        }
-        
+        $this->type = $engineStr;
     }
 
 }
diff --git a/src/scene/TrackerEngine.php b/src/scene/TrackerEngine.php
deleted file mode 100644
index 42dc057..0000000
--- a/src/scene/TrackerEngine.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-namespace Blobt\Luxcore\scene;
-
-class TrackerEngine extends BaseCfg
-{
-    
-    public function __toString()
-    {
-        return "错误，不能返回当前类的属性。\n";
-    }
-    
-
-    /**
-     * @var integral 使用何种光线跟踪引擎
-     */
-    public static $Engine = 'PATH';
-
-
-    /**
-     * 设置使用 “PATH” 光线跟踪引擎
-     */
-    public function usePath(){
-        self::$Engine = 'PATH';
-    }
-
-    /**
-     * 设置使用 “BIDIR” 光线跟踪引擎
-     */
-    public function usePidir(){
-        self::$Engine = 'BIDIR';
-    }
-
-}