[fix] Fixed an issue that posteffect's parameters were remained after music ended.

sjplayer/src/sjplayer/PostEffect.d

@@ -60,6 +60,11 @@ class PostEffect {
     fb_.Unbind();
   }
 
+  ///
+  void Initialize() {
+    instance = instance.init;
+  }
+
   ///
   void BindFramebuffer() {
     fb_.Bind();

src/sj/Game.d

@@ -48,7 +48,7 @@ class Game : AbstractGame {
     title_  = new TitleScene(lobby_, programs_);
     select_ = new SelectScene(lobby_, programs_, fonts_, music_list_);
     load_   = new LoadingScene(lobby_, posteffect_, programs_, fonts_);
-    play_   = new PlayScene;
+    play_   = new PlayScene(posteffect_);
     result_ = new ResultScene(lobby_, programs_, fonts_);
 
     title_ .SetupSceneDependency(select_);

src/sj/PlayScene.d

@@ -23,7 +23,8 @@ class PlayScene : SceneInterface {
   enum NearnessScoreRatio = 10;
 
   ///
-  this() {
+  this(sjplayer.PostEffect posteffect) {
+    posteffect_ = posteffect;
   }
   ~this() {
     context_.destroy();
@@ -42,12 +43,14 @@ class PlayScene : SceneInterface {
     score_ = BaseScore;
 
     music_.PlayForGame(offset_beat);
+    posteffect_.Initialize();
   }
   override SceneInterface Update(KeyInput input) {
     beat_ = music_.beat;
 
     if (beat_ >= context_.length) {
       music_.StopPlaying();
+      posteffect_.Initialize();
 
       result_scene_.Initialize(music_, score_);
       return result_scene_;
@@ -93,6 +96,8 @@ class PlayScene : SceneInterface {
     return result;
   }
 
+  sjplayer.PostEffect posteffect_;
+
   ResultScene result_scene_;
 
   Music            music_;