如果格式能够表示 HDR 数据，则返回 true。否则返回 false。
能够表示超出典型 LDR 限制 1.0f 的值的格式应返回 true。请注意，某些根据此函数不符合 HDR 标准的格式能够表示略大的范围（例如 (-0.75 到 1.25) 比 LDR 格式通常的范围要大。使用 GraphicsFormatUtility.IsXRFormat 识别这些“扩展范围”格式。其他资源：GraphicsFormatUtility.IsXRFormat。
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