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(wall, native)_clock: Add GetGPUTick

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Allows us to directly calculate the GPU tick without double conversion to and from the host clock tick.
This commit is contained in:
Morph 2023-05-28 17:45:47 -04:00
parent e25d41580b
commit 1b83c7eab4
7 changed files with 47 additions and 12 deletions
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11
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 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 gpu_tick = system.CoreTiming().GetGPUTicks();
if (Settings::values.use_fast_gpu_time.GetValue()) {
nanoseconds /= 256;
gpu_tick /= 256;
}
return nanoseconds * NsToGPUTickRatio::num / NsToGPUTickRatio::den;
return gpu_tick;
}
[[nodiscard]] bool IsAsync() const {