頂点アニメーションテクスチャ (VAT) を使って、シミュレーションデータをテクスチャファイルとして出力すると、頂点シェーダによる高解像度シミュレーションの非常に効果的な再生が可能になります。

4種類のシミュレーションがサポートされています。

  • シミュレーションを通じてトポロジが一定のもの (Soft: ソフトボディ) 
  • パックプリミティブを元にしたリジッドボディシミュレーション (Rigid: RBD) 
  • シミュレーション中にトポロジに変化があるもの (Fluid: 流体) 
  • 空間を移動するポイントを常にカメラを向くカードで表示 (Sprite: スプライト)

UE4 VAT 2.1

Unity VAT 2.1

VAT2.1 について

  • URP 互換シェーダーグラフを含む Unity パッケージの追加
  • マテリアル、マテリアル関数、ヘルパーユーティリティを備えた Unreal コンテンツプラグインの追加
  • 2 の累乗のテクスチャを 2つの個別の値ではなく比率でマテリアルに設定ように変更
  • RBD 出力のシェーダロジックが再生時の精度向のための変更。セントロイドに頂点カラーを使用すると精度に問題が出る可能性があり、開始フレームに望ましくない結果を引き起こす可能性があります。
  • よく使うパラメータを見つけ易くするための UI のクリーンアップ
  • ドキュメントの更新
VAT 2.1 に関する詳細はこちらのフォーラムもご覧ください。




GDC 2017 頂点アニメーションテクスチャ概要



対応ファイルのダウンロード

Webinar

コメント

  • windwolfx23 6 年, 4 ヶ月 前  | 

    does unity get the same support?

  • Sirvoxelot 6 年, 1 ヶ月 前  | 

    for the camera facing cards bake,
    is there any way to bake things like
    alpha, or orientation of the point?

    trying to find a method to bake a particle sequence in unreal that is controlled with unreal engine's 'time' node only for sequencer
    like a particle cache with a seek function

  • pmcavena 5 年, 2 ヶ月 前  | 

    The download file link is broken, any place I could get the support files to follow along?

  • pdaddyo 4 年, 11 ヶ月 前  | 

    Try https://github.com/keijiro/VfxVatExample for unity option

    • Jochen Hanisch 4 年, 7 ヶ月 前  | 

      Thank you very much, that helps a lot

  • kuimig 4 年, 11 ヶ月 前  | 

    Hi luiz!
    How does the explosion material made by Houdini follow vertex animation to import Unreal？

  • Noboru_Garcia 4 年, 11 ヶ月 前  | 

    Version 18 Labs tools are not generating a working material script. I have used previous versions and this one is not working in Unreal 4.24 with Houdini 18.0.327 and the latest versions of Labs Game tools.

    • ita4ick 4 年, 8 ヶ月 前  | 

      I have the same problem, did you resolve this issue?

  • carsten.kolve 4 年, 6 ヶ月 前  | 

    The dropbox link for the example files seems to have expired? could those be updated, please?

    • sambetlem 4 年, 6 ヶ月 前  | 

      Also seeing this. Would be ace to get it updated really want to test my first sim.

    • lkruel 4 年, 6 ヶ月 前  | 

      Updated, sorry about that. But do be aware that this content was built with the original version of the tool and might be slightly out of date.

  • Gridz-sama 4 年, 5 ヶ月 前  | 

    Hi Mr. Ikruel, where can I export the normal map for the setup of cloth and other objects with the last update of the vertex animation node? Anything changed since your video?

    • lkruel 4 年, 5 ヶ月 前  | 

      normal maps are a bit tricky, because you'll also need to export a tangent map alongside the normals map to get the normal maps to work properly, you'll also need to do a lot of the math yourself to convert from tangent to world space and then set your material to the world space normals.

  • bryanebentleycgs 3 年, 10 ヶ月 前  | 

    Grettings and thank you for all the amazing labs tools.

    I too am haveing problems with copying and pasting the material code in UE4. whe resultant shader has node floating in space, and the time node is not hooked up to anything. I am using labs version 18.5.408 on Houdini version 18.5.408.

    It woudl be great to get a video on how to build our own version of this shader to have a fall back on when the automated stuff dosn't work or is not feasable to use. While he network is not compelx to the person who designed it, as an end user opening that refrigereator door is quite overwhelming.

    Thank again for all the great tools!

    • Noboru_Garcia 3 年, 6 ヶ月 前  | 

      Yes, If you find one please let me know.

  • ndamico 3 年, 4 ヶ月 前  | 

    Hello, Is there any how-to anywhere for The VAT 3.0? Seems like it no longer includes the shader code

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