diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTButton.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTButton.java
index a208c76..38d66a6 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTButton.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTButton.java
@@ -6,12 +6,14 @@
 
 public class RWTButton implements TouchListener {
     private RWTSprite[] sprite = null;
-    RWTSurfaceView view;
-    public RWTButton(final RWTSurfaceView view) {
-        this.view = view;
+
+    public RWTButton(final RWTLayer layer) {
         sprite = new RWTSprite[2];
-        sprite[0] = new RWTSprite(view);
-        sprite[1] = new RWTSprite(view);
+        sprite[0] = new RWTSprite();
+        sprite[1] = new RWTSprite();
+
+        layer.addDrawable(sprite[0]);
+        layer.addDrawable(sprite[1]);
     }
 
     @Override
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTDrawable.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTDrawable.java
index 8b225f5..7fcc412 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTDrawable.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTDrawable.java
@@ -2,6 +2,33 @@
 
 import org.ntlab.radishforandroidstudio.java3d.GraphicsContext3D;
 
+/**
+ * 描画可能な要素を示すインタフェース
+ *
+ * @author s.iwatani
+ */
 public interface RWTDrawable {
+    /**
+     * 描画を行う
+     *
+     * @author s.iwatani
+     * @param gc3D
+     */
     public void draw(GraphicsContext3D gc3D);
+
+    /**
+     * 描画するかしないかをセット
+     *
+     * @author s.iwatani
+     * @param isDraw trueで描画する
+     */
+    public void setIsDraw(boolean isDraw);
+
+    /**
+     * 描画するかしないかを取得
+     *
+     * @author s.iwatani
+     * @return boolean
+     */
+    public boolean getIsDraw();
 }
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTLayer.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTLayer.java
new file mode 100644
index 0000000..4635c35
--- /dev/null
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTLayer.java
@@ -0,0 +1,54 @@
+package org.ntlab.radishforandroidstudio.framework.RWT;
+
+import android.graphics.drawable.Drawable;
+
+import org.ntlab.radishforandroidstudio.java3d.GraphicsContext3D;
+
+import java.util.ArrayList;
+
+/**
+ * 複数のdrawableを管理するクラス
+ */
+public class RWTLayer {
+    private ArrayList<RWTDrawable> drawables = new ArrayList<>();
+
+    public RWTLayer() {
+
+    }
+
+    /**
+     * RWTDrawableを追加する
+     *
+     * @auther s.iwatani
+     * @param drawable 追加したいRWTDrawable
+     */
+    public void addDrawable(RWTDrawable drawable) {
+        drawables.add(drawable);
+    }
+
+    /**
+     * RWTDrawableを削除する
+     *
+     * @param drawable 削除したいRWTDrawable
+     */
+    public void removeDrawable(RWTDrawable drawable) {
+        drawables.remove(drawable);
+    }
+
+    /**
+     * レイヤーに配置されたdrawableを描画する
+     *
+     * @param gc3D
+     */
+    public void draw(GraphicsContext3D gc3D) {
+        // 2D描画開始
+        gc3D.startDrawImage();
+
+        for (RWTDrawable drawable : drawables) {
+            drawable.draw(gc3D);
+        }
+
+        // 戻し
+        gc3D.endDrawImage();
+    }
+}
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTLayers.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTLayers.java
new file mode 100644
index 0000000..c45d137
--- /dev/null
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTLayers.java
@@ -0,0 +1,102 @@
+package org.ntlab.radishforandroidstudio.framework.RWT;
+
+import android.support.v13.view.DragStartHelper;
+
+import org.ntlab.radishforandroidstudio.java3d.GraphicsContext3D;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.TreeMap;
+
+public class RWTLayers {
+    private TreeMap<Integer, ArrayList<RWTLayer>> layers = new TreeMap();
+
+    public RWTLayers() {
+
+    }
+
+    /**
+     * レイヤーを追加
+     *
+     * @author s.iwatani
+     * @param priority 描画の優先順位．低いほうが手前に表示される
+     * @param layer    追加するレイヤー
+     */
+    public void addLayer(int priority, RWTLayer layer) {
+        if (layers.get(priority) == null) {
+            layers.put(priority, new ArrayList<RWTLayer>());
+        }
+        layers.get(priority).add(layer);
+    }
+
+    /**
+     * レイヤーを削除
+     *
+     * @author s.iwatani
+     * @param layer 削除したいレイヤー
+     */
+    public void removeLayer(RWTLayer layer) {
+        Iterator<Map.Entry<Integer, ArrayList<RWTLayer>>> it = layers.entrySet().iterator();
+
+        while(it.hasNext()) {
+            Map.Entry<Integer, ArrayList<RWTLayer>> value = it.next();
+            value.getValue().remove(layer);
+
+            // 空ならその優先順位の値は不要になるため削除
+            if (value.getValue().isEmpty()) {
+                it.remove();
+            }
+        }
+    }
+
+    /**
+     * 描画の優先順位を変更
+     *
+     * @author s.iwatani
+     * @param priority 変更後の優先順位
+     * @param layer 対象レイヤー
+     */
+    public void changePriority(int priority, RWTLayer layer) {
+        removeLayer(layer);
+        addLayer(priority, layer);
+    }
+
+    /**
+     * 描画の優先順位を最前面へ変更
+     *
+     * @author s.iwatani
+     * @param layer 対象レイヤー
+     */
+    public void changeTopPriority(RWTLayer layer) {
+        removeLayer(layer);
+        addLayer(calcTopPriority(), layer);
+    }
+
+    /**
+     * 最前面に表示するためのpriorityの値を取得する
+     *
+     * @author s.iwatani
+     * @return int 優先順位
+     */
+    public int calcTopPriority() {
+        if (layers.isEmpty()) {
+            return 0;
+        }
+        return layers.firstKey() - 1;
+    }
+
+    /**
+     * セットされているレイヤーを描画する
+     *
+     * @author s.iwatani
+     * @param gc3D
+     */
+    public void draw(GraphicsContext3D gc3D) {
+        for (Map.Entry<Integer, ArrayList<RWTLayer>> entry : layers.entrySet()) {
+            for (RWTLayer layer : entry.getValue()) {
+                layer.draw(gc3D);
+            }
+        }
+    }
+}
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTRenderer.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTRenderer.java
index 559a2c7..17a20f8 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTRenderer.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTRenderer.java
@@ -16,7 +16,7 @@
 	protected Viewer3D viewer;
 	protected Camera3D camera;
 	protected GraphicsContext3D gc3D = null;
-	protected RWTSprites sprites = new RWTSprites();
+	protected RWTLayers layers = new RWTLayers();
 	protected GL10 gl;
 
 	public RWTRenderer() {
@@ -29,12 +29,8 @@
 		viewer = new Viewer3D(camera);
 	}
 
-	public void attachSprites(RWTSprites sprites) {
-		this.sprites = sprites;
-	}
-
-	public GL10 getGl() {
-		return gl;
+	public void attachLayers(RWTLayers layers) {
+		this.layers = layers;
 	}
 
 	@Override
@@ -76,6 +72,6 @@
 		gc3D.popMatrix();
 
 		// UI, HUDのレンダリング
-		sprites.draw(gc3D);
+		layers.draw(gc3D);
 	}
 }
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTSprite.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTSprite.java
index 45b8b4c..de02231 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTSprite.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTSprite.java
@@ -1,11 +1,11 @@
 package org.ntlab.radishforandroidstudio.framework.RWT;
 
-import javax.microedition.khronos.opengles.GL10;
-import javax.microedition.khronos.opengles.GL11;
-import javax.microedition.khronos.opengles.GL11Ext;
 import android.content.res.Resources;
 import android.opengl.GLUtils;
 import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TableLayout;
 
 import org.ntlab.radishforandroidstudio.framework.model3D.Position3D;
 import org.ntlab.radishforandroidstudio.java3d.GraphicsContext3D;
@@ -13,6 +13,8 @@
 import org.ntlab.radishforandroidstudio.java3d.Texture;
 import org.ntlab.radishforandroidstudio.java3d.TextureLoader;
 
+import java.util.ArrayList;
+
 /**
  * 画像管理クラス
  * 座標は左下が原点であることに注意(DirectXは左上のため)
@@ -24,6 +26,7 @@
     private RWTImageLoader texLoader;
     private Texture tex;
     private ImageComponent2D image = null;
+    private boolean isDraw = true;
 
     // 表示座標
     private Position3D pos = new Position3D(0.f, 0.f, 0.f);
@@ -31,8 +34,7 @@
     private Position3D texPos = new Position3D(0.f, 0.f, 0.f);
     private Position3D viewSize = new Position3D(0.f, 0.f, 0.f);
 
-    public RWTSprite(final RWTSurfaceView view) {
-        view.addSprite(this);
+    public RWTSprite() {
     }
 
     /**
@@ -121,6 +123,10 @@
      * @param gc3D GL10
      */
     public void draw(GraphicsContext3D gc3D) {
+        if (!getIsDraw()) {
+            return;
+        }
+
         boolean isNullTextureId = textureId == null;
         if (textureId == null) {
             textureId = new int[1];
@@ -128,4 +134,26 @@
         }
         gc3D.draw(textureId[0], pos, texPos, texSize, viewSize);
     }
+
+    /**
+     * 描画するかしないかをセット
+     *
+     * @author s.iwatani
+     * @param isDraw trueで描画する
+     */
+    @Override
+    public void setIsDraw(boolean isDraw) {
+        this.isDraw = isDraw;
+    }
+
+    /**
+     * 描画するかしないかを取得
+     *
+     * @author s.iwatani
+     * @return boolean
+     */
+    @Override
+    public boolean getIsDraw() {
+        return isDraw;
+    }
 }
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTSprites.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTSprites.java
deleted file mode 100644
index 5a6b5a2..0000000
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTSprites.java
+++ /dev/null
@@ -1,53 +0,0 @@
-package org.ntlab.radishforandroidstudio.framework.RWT;
-
-import org.ntlab.radishforandroidstudio.java3d.GraphicsContext3D;
-
-import java.util.ArrayList;
-
-/**
- * スプライト管理クラス
- *
- * @author s.iwatani
- */
-public class RWTSprites {
-    private ArrayList<RWTDrawable> sprites = new ArrayList<>();
-
-    public RWTSprites() {}
-
-    /**
-     * スプライトの追加
-     *
-     * @author s,iwatani
-     * @param sprite 追加したいRWTSprite
-     */
-    public void addSprite(RWTSprite sprite) {
-        sprites.add(sprite);
-    }
-
-    /**
-     * スプライトの削除
-     *
-     * @author s.iwatani
-     * @param sprite 削除したいRWTSprite
-     */
-    public void removeSprite(RWTSprite sprite) {
-        sprites.remove(sprite);
-    }
-
-    /**
-     * 登録されたスプライトの描画
-     *
-     * @param gc3D GraphicsContext3D
-     */
-    public void draw(GraphicsContext3D gc3D) {
-        gc3D.startDrawImage();
-
-        // 描画
-        for (RWTDrawable sprite : sprites) {
-            sprite.draw(gc3D);
-        }
-
-        // 戻し
-        gc3D.endDrawImage();
-    }
-}
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTSurfaceView.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTSurfaceView.java
index 9fa2686..43e52b4 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTSurfaceView.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTSurfaceView.java
@@ -2,19 +2,12 @@
 
 import android.content.Context;
 import android.opengl.GLSurfaceView;
-import android.os.Bundle;
-import android.util.AttributeSet;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
 
 import org.ntlab.radishforandroidstudio.framework.view3D.Camera3D;
 
-import javax.microedition.khronos.opengles.GL10;
-
 public class RWTSurfaceView extends GLSurfaceView {
 	protected RWTRenderer renderer;
-	protected RWTSprites sprites = new RWTSprites();
+	protected RWTLayers layers = new RWTLayers();
 
 	public RWTSurfaceView(Context context) {
 		this(context, true);
@@ -24,7 +17,7 @@
 		super(context);
 		if (bInitRenderer) {
 			renderer = new RWTRenderer();
-			renderer.attachSprites(sprites);
+			renderer.attachLayers(layers);
 			setEGLConfigChooser(8, 8, 8, 8, 16, 0);
 			this.setRenderer(renderer);
 		}
@@ -34,11 +27,53 @@
 		renderer.attachCamera(camera);
 	}
 
-	public void addSprite(RWTSprite sprite) {
-		sprites.addSprite(sprite);
+	/**
+	 * レイヤーを最前面に配置するように追加
+	 *
+	 * @author s.iwatani
+	 * @param layer 追加したいレイヤー
+	 */
+	public void addLayer(RWTLayer layer) { addLayer(layers.calcTopPriority(), layer); }
+
+	/**
+	 * レイヤーを追加
+	 *
+     * @author s.iwatani
+	 * @param priority 優先順位 低いほど手前に表示される
+	 * @param layer 追加したいレイヤー
+	 */
+	public void addLayer(int priority, RWTLayer layer) {
+		layers.addLayer(priority, layer);
 	}
 
-	public void removeSprite(RWTSprite sprite) {
-		sprites.removeSprite(sprite);
+    /**
+     * 描画の優先順位を変更
+     *
+     * @author s.iwatani
+     * @param priority 変更後の優先順位
+     * @param layer 対象レイヤー
+     */
+	public void changePriority(int priority, RWTLayer layer) {
+        layers.changePriority(priority, layer);
+    }
+
+    /**
+     * 描画の優先順位を最前面へ変更
+     *
+     * @author s.iwatani
+     * @param layer 対象レイヤー
+     */
+    public void changeTopPriority(RWTLayer layer) {
+        layers.changeTopPriority(layer);
+    }
+
+	/**
+	 * レイヤーを削除
+	 *
+	 * @author s.iwatani
+	 * @param layer 削除したいレイヤー
+	 */
+	public void removeLayer(RWTLayer layer) {
+		layers.removeLayer(layer);
 	}
 }
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/spriteTest/TestActivity.java b/app/src/main/java/org/ntlab/radishforandroidstudio/spriteTest/TestActivity.java
index 1e8e6d5..b4ae5a3 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/spriteTest/TestActivity.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/spriteTest/TestActivity.java
@@ -13,6 +13,8 @@
 import android.widget.TableLayout;
 
 import org.ntlab.radishforandroidstudio.R;
+import org.ntlab.radishforandroidstudio.framework.RWT.RWTLayer;
+import org.ntlab.radishforandroidstudio.framework.RWT.RWTLayers;
 import org.ntlab.radishforandroidstudio.framework.RWT.RWTSprite;
 import org.ntlab.radishforandroidstudio.framework.RWT.RWTSurfaceView;
 import org.ntlab.radishforandroidstudio.framework.gameMain.RealTimeActivity;
@@ -38,6 +40,11 @@
     private Solid3D ground;
     private Transform3D initTrans;
     private Solid3D diceObj;
+    RWTLayer[] layer = new RWTLayer[3];
+    private long time = 0;
+    private int side = 0;
+
+    private RWTSurfaceView view = null;
 
     private RWTSprite[] sprite = new RWTSprite[3];
 
@@ -100,27 +107,32 @@
         camera.addTarget(diceObj);
 
         // 画面との関連付け
-        RWTSurfaceView view = new RWTSurfaceView(this);
+        view = new RWTSurfaceView(this);
         view.attachCamera(camera);
         setContentView(view);
 
-        // 適当に設定してみる
-        Button sv = new Button(this);
-        sv.setText("test");
-        sv.setBackgroundColor(0);
-        sv.setLayoutParams(new LinearLayout.LayoutParams(50, 50));
-        setContentView(sv);
+        // layer
+        layer[0] = new RWTLayer();
+        layer[1] = new RWTLayer();
+        layer[2] = new RWTLayer();
+        view.addLayer(layer[0]);
+        view.addLayer(layer[1]);
+        view.addLayer(layer[2]);
 
-        sprite[0] = new RWTSprite(view);
+        sprite[0] = new RWTSprite();
         sprite[0].setTexture(getResources(), R.drawable.dice_6, false);
+        layer[0].addDrawable(sprite[0]);
 
-        sprite[1] = new RWTSprite(view);
+        sprite[1] = new RWTSprite();
         sprite[1].setTexture(getResources(), R.drawable.wadahand, true);
         sprite[1].setPosition(100, 100);
+        layer[1].addDrawable(sprite[1]);
 
-        sprite[2] = new RWTSprite(view);
+        sprite[2] = new RWTSprite();
         sprite[2].setTexture(getResources(), R.drawable.tss_thumb, true);
         sprite[2].setPosition(100, 100);
+        layer[2].addDrawable(sprite[2]);
+
         start(10);
     }
 
@@ -132,7 +144,14 @@
 
         long newTime = System.nanoTime();
         physicalSystem.motion(0, 10, Force3D.ZERO, physicalSystem.objects.get(0).getGravityCenter(), null);
-//        Log.v("moji", "" + ((System.nanoTime()-newTime)/1000.0));
+
+        time += interval;
+        if (time > 1000) {
+            time -= 1000;
+            side++;
+            view.changeTopPriority(layer[side % 3]);
+        }
+        //        Log.v("moji", "" + ((System.nanoTime()-newTime)/1000.0));
     }
 
     @Override