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author | Morph <39850852+Morph1984@users.noreply.github.com> | 2023-04-23 06:01:08 +0200 |
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committer | Morph <39850852+Morph1984@users.noreply.github.com> | 2023-06-08 03:44:42 +0200 |
commit | 8e56a84566036cfff0aa5c3d80ae1b051d2bd0bf (patch) | |
tree | 2bb7be86aafe9986811758b508a7581d2efe8ac4 /src/video_core/gpu.cpp | |
parent | nvnflinger: Acquire lock prior to signaling the vsync variable (diff) | |
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Diffstat (limited to 'src/video_core/gpu.cpp')
-rw-r--r-- | src/video_core/gpu.cpp | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/src/video_core/gpu.cpp b/src/video_core/gpu.cpp index 456f733cf..70762c51a 100644 --- a/src/video_core/gpu.cpp +++ b/src/video_core/gpu.cpp @@ -194,17 +194,17 @@ 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; + // The GPU clock is 614.4 MHz + using NsToGPUTickRatio = std::ratio<614'400'000, std::nano::den>; + static_assert(NsToGPUTickRatio::num == 384 && NsToGPUTickRatio::den == 625); + + u64 nanoseconds = system.CoreTiming().GetGlobalTimeNs().count(); - u64 nanoseconds = system.CoreTiming().GetCPUTimeNs().count(); if (Settings::values.use_fast_gpu_time.GetValue()) { nanoseconds /= 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 nanoseconds * NsToGPUTickRatio::num / NsToGPUTickRatio::den; } [[nodiscard]] bool IsAsync() const { |