• Stars
    star
    189
  • Rank 204,155 (Top 5 %)
  • Language
    C#
  • License
    MIT License
  • Created almost 7 years ago
  • Updated almost 6 years ago

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Repository Details

Non-realtime (=static) screen blur for Unity. Easy to use background for dialogs.

StaticBluredScreen

NOTE: This project has been integrated into UIEffect, so we are NOT continuing development in this repository.



<< Description | WebGL Demo | Download | Usage | Change log >>







Overview

image

静的なブラースクリーンを表示します. ポストエフェクト等によるリアルタイムブラーとは異なり、ある時点でのレンダリング結果に対するブラーのみを提供します.

  1. ブラー処理用のCameraが不要です.
  2. ブラーは常時実行されません. テクスチャ更新を実行したあと1度だけ実行されます.
  3. 縮小バッファを利用することで、メモリサイズを小さく抑えます.
  4. スクリーン | ブラー | ダイアログ1 | ブラー | ダイアログ2 ... のように、重ねて表示できます.
  5. 激しい動きのあるオブジェクトがスクリーン上にある場合、ブラーテクスチャにズレが発生し得ます.

How To Work?

カメラに対し以下のコマンドバッファを1フレームだけ割り当てています.
縮小バッファを利用してブラーを適用し、出力先RTにコピーしているだけです.
その後、出力先RTをRawImage等で表示させると、ブラーが画面に適用されているように見えます.
ブラーが適用されるのはあくまで縮小バッファであり、レンダリング負荷がほとんどかからないことに注意してください.

// テンポラリRTに対するIDを生成.
int copyId = Shader.PropertyToID("_ScreenCopy");
int blurId = Shader.PropertyToID("_StaticBlur");

// ブラーシェーダを割り当てたマテリアルを生成.
Material materialBlur = new Material(shaderBlur);

// 出力先RTを生成.
RenderTexture rt = new RenderTexture(w, h);

// カメラのレンダリング結果をRTにコピー.
buffer = new CommandBuffer();
buffer.GetTemporaryRT(copyId, -1, -1, 0, FilterMode.Bilinear);
buffer.Blit(BuiltinRenderTextureType.CurrentActive, copyId);

// 縮小バッファを利用して、ブラーシェーダを適用.
buffer.GetTemporaryRT(blurId, w/4, h/4, 0, FilterMode.Bilinear);
buffer.Blit(copyId, blurId, materialBlur);

// 縮小バッファから出力先RTにコピー.
buffer.Blit(blurId, rtId);

// テンポラリRTを解放.
buffer.ReleaseTemporaryRT(blurId);
buffer.ReleaseTemporaryRT(copyId);

// コマンドバッファをカメラに追加.
_camera.AddCommandBuffer(CameraEvent.AfterImageEffects, buffer);

Requirement

  • Unity5.5+ (included Unity 2017.x)
  • No other SDK

Usage

  1. Download StaticBluredScreen.unitypackage and install to your project.
  2. Attach StaticBluredScreen component to GameObject.
  3. In playmode, call StaticBluredScreen.UpdateTexture.
  4. Enjoy!

image

Demo

demo

ダイアログを開くタイミングで静的なスクリーンブラーを生成し、アニメーションでフェードイン/アウトするデモです.
シーン内にカメラは1つしかありません.
ダイアログが2つ重なったとき、更にブラーを生成しています.

License

MIT
© UTJ/UCL

Author

mob-sakai

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