Valve Proton兼容层新增AMD FSR 4支持，为Steam Machine铺路

市场资讯2025-11-19

炒股就看金麒麟分析师研报，权威，专业，及时，全面，助您挖掘潜力主题机会！（来源：IT之家）IT之家 11 月 19 日消息，对于运行 Linux 或 SteamOS 的用户来说，Valve 用于 DirectX 12 转译的 Proton 兼容层（即让 Windows 游戏和 API 能够顺利运行）刚刚迎来了一次重大更新，VKD3D-Proton 3.0 版本已正式发布，本次更新包含多项改进，其中...

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Anti-Lag（抗延迟）功能的支持。IT之家注意到，更新日志指出：“我们通过 VK_KHR_cooperative_matrix 与 VK_KHR_shader_float8 扩展，新增了对 AGS WMMA 内建函数的支持，这足以支持 FSR 4。”与 Windows 平台上的 FSR 4 版本一样，其官方硬件支持目前仅限于 RDNA 4 架构 GPU 及 Radeon RX 9000 系列显卡；但此次更新还额外引入了一种回退（fallback）模式，使 FSR 4 得以在更早的 RDNA 3 乃至 RDNA 2 架构 GPU 上运行，该模式通过 int8 与 float16 运算实现兼容。然而，根据官方发布说明，在上一代 Radeon 硬件上运行 FSR 4 将带来“显著的性能开销”以及整体图像质量的下降。该模拟路径不会被纳入官方 Proton 构建版本；但它的存在，为 FSR 4 技术及时适配 Valve 计划于 2026 年初推出的全新 Steam Machine 主机铺平了道路。在 Valve 近期举行的重磅新品发布会上，该公司首次披露了其新一代“PC-主机混合设备”即 Steam Machine，据称其搭载的 RDNA 3 架构 GPU 性能较 Steam Deck 提升逾 6 倍。会上，Digital Foundry 向 Valve 提问：鉴于该设备高度依赖 FSR 技术以实现 4K 输出分辨率，其是否可能支持 FSR 4？Valve 虽未明确确认，但表示“希望 FSR 4 能够支持 RDNA 3 架构”，并强调若 AMD 实现此支持，Steam Machine 将已做好准备。值得指出的是，FSR 4 的 int8 回退机制之所以存在，初衷正是为了兼容旧款 RDNA 硬件。事实上，目前社区能在 RDNA 3/2 GPU 上模拟运行 FSR 4，纯属因 AMD 意外泄露了相关源代码所致。然而，若想在 Steam Deck 等设备上实现高度优化的 FSR 4 支持，AMD 仍需进一步开展底层性能调优工作。综上所述，FSR 4 登陆 Proton 标志着跨平台兼容性迈出关键一步。猜测 AMD 或将很快面向全体 Radeon 用户推出类似“FSR 4 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