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UE4 クロマキー 背景抜きの方法

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#経緯
背景が単色の画像を単色部分だけ抜いて透明にしたmaterialを作成しようとしたのですがパッとやり方が出てこなかったので備忘録として:watermelon:
#方法

新規マテリアルを作成し Blend ModeMasked にする。
スクリーンショット 2021-10-26 001247.png

Chroma_key_Alpha , Texture Sample , Constant4Vector を配置し下図のように繋げる
スクリーンショット 2021-10-26 001332.png

Constant4Vector の色をスポイトで背景色と一緒にする

#だけ

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