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Merged
merged 1 commit into from
May 17, 2025
Merged

提高 GPU 优先级 #1146

merged 1 commit into from
May 17, 2025

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Blinue
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@Blinue Blinue commented May 17, 2025

使用和 OBS 同样的方法提高 GPU 优先级，某些情况下这可以提高流畅度。有几点需要注意：

  1. 我们始终使用“高”优先级。一方面“实时”优先级会造成系统不稳定：OBS 在硬件加速 GPU 调度 (HAGS) 打开时使用“高”优先级否则使用“实时”优先级，但实际上即使没有打开 HAGS，“实时”优先级也会造成问题。另一方面我不想让过于激进的优化影响到源窗口的流畅度。
  2. OBS 还使用 IDXGIDevice::SetGPUThreadPriority 提高优先级。这个接口一般被认为无用，但 OBS 传了一个未记录的值，似乎真的有用。我尝试传入相同的值但接口返回 0x8876086A (D3DERR_NOTAVAILABLE)，顺带一提我这里 OBS 的调用也会失败，证明这不是专为 OBS 开的后门。

@Blinue Blinue merged commit d502ca2 into dev May 17, 2025
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@Blinue Blinue deleted the perf/priority branch May 17, 2025 04:30
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