小米玄戒 O3 芯片曝光 BCn 纹理格式支持能力

科技媒体 NotebookCheck 发现，小米自研玄戒 O3 芯片支持 BCn 块压缩纹理格式（BC1 至 BC7），这项能力为手机运行 PC 游戏铺路 1。搭载该芯片的小米 18 Fold 和小米 Pad 9 Pro Max 均支持 BCn 格式的采样、位图传输和数据传输 1。在运行 Winlator、Proton 等 Windows 游戏兼容层工具时，BCn 支持可降低手机的内存占用和功耗 1。

这项功能在现有手机芯片中较为少见 1。联发科天玑和谷歌 Tensor 系列芯片均不支持 BCn 格式 1。BCn 格式支持的主要应用场景是在手机端运行 Windows 游戏 1。

Xiaomi's proprietary Xuanjie O3 chip has been found to support BCn block compression texture formats (BC1 through BC7), a capability that could enable smartphones to run PC games more efficiently 1. According to tech media NotebookCheck, the Xiaomi 18 Fold and Xiaomi Pad 9 Pro Max, both powered by the Xuanjie O3 chip, support sampling, bitmap transmission, and data transfer across all BCn subtypes 1.

This technical capability is relatively rare among existing smartphone processors; MediaTek's Dimensity series and Google's Tensor lineup notably lack similar support 1. When running Windows game compatibility layers such as Winlator and Proton, BCn support can significantly reduce memory consumption and power usage during gameplay 1. The primary application of this feature is enabling mobile devices to execute Windows games through open-source compatibility layer tools 1.