Unity 使用直接的 Alpha 混合。因此,您需要扩展颜色层…Unity 中的 Alpha 通道将从 Photoshop 文件中的第一个 Alpha 通道读取出来。
在此之前,安装以下 Alpha 实用程序 Photoshop 操作程序:AlphaUtility.atn.zip
安装后,操作面板 (Action Palette) 应该包含一个名为 AlphaUtility 的文件夹:
假设您在 Photoshop 内的透明层上有 Alpha 纹理。类似以下纹理:
复制该层
选择最低层。此层将成为背景扩张的源。
选择 __Layer > Matting > Defringe__,并应用默认属性
多次运行“Dilate Many”操作。这样就会将背景扩展到新层中。
选择所有扩张层并用 Command-E 合并它们
在图像栈的底部创建纯色层。此层的颜色与文档的一般颜色相匹配(在本示例中为绿色)。请注意,如果没有此层,Unity 将从所有层的合并透明度中获取 Alpha。
现在我们需要将透明度复制到 Alpha 层中。
保存 PSD 文件;现在便准备好了。
请注意,如果图像包含透明度(合并层之后),则 Unity 将从所有层的合并透明度中获取 Alpha,并将忽略 Alpha 遮罩。变通方法是创建一个纯色层,如“确保 Alpha 正确”部分的第 6 点所述
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