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Merge pull request #10086 from Morph1984/coretiming-ng-1

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core_timing: Use CNTPCT as the guest CPU tick
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bunnei 2023-06-21 21:12:46 -07:00 • committed by GitHub
commit e3122c5b46
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31 changed files with 283 additions and 432 deletions
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13
src/video_core/gpu.cpp
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@ -193,18 +193,13 @@ struct GPU::Impl {
}
[[nodiscard]] u64 GetTicks() const {
// This values were reversed engineered by fincs from NVN
// The gpu clock is reported in units of 385/625 nanoseconds
constexpr u64 gpu_ticks_num = 384;
constexpr u64 gpu_ticks_den = 625;
u64 gpu_tick = system.CoreTiming().GetGPUTicks();
u64 nanoseconds = system.CoreTiming().GetCPUTimeNs().count();
if (Settings::values.use_fast_gpu_time.GetValue()) {
nanoseconds /= 256;
gpu_tick /= 256;
}
const u64 nanoseconds_num = nanoseconds / gpu_ticks_den;
const u64 nanoseconds_rem = nanoseconds % gpu_ticks_den;
return nanoseconds_num * gpu_ticks_num + (nanoseconds_rem * gpu_ticks_num) / gpu_ticks_den;
return gpu_tick;
}
[[nodiscard]] bool IsAsync() const {