HDR 压缩颜色纹理格式。
BC6H 格式将 RGB HDR 纹理压缩到每像素 8 位,DX11 类 PC 硬件以及 PS4 和 XboxOne 支持此格式。
在压缩浮点纹理数据(天空盒、反射探针、光照贴图、发光纹理)时最好使用此格式,
例如未压缩的纹理将为 RGBAHalf 或 RGBAFloat 格式。注意,BC6H 不保留 Alpha 通道;它只存储 RGB 颜色通道。
在不支持 BC6H 纹理的平台上加载这种纹理时,纹理将在加载时解压缩为 RGBAHalf 格式(每像素 64 位)。注意,使用 OpenGL 时,BC7 在 Mac 上不可用。
另请参阅:Texture2D.format、texture assets。
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