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nvnflinger: correct swap interval handling
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0e8f98a441
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2f2ef5b147
@ -312,8 +312,6 @@ void NVFlinger::Compose() {
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}
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s64 NVFlinger::GetNextTicks() const {
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static constexpr s64 max_hertz = 120LL;
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const auto& settings = Settings::values;
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auto speed_scale = 1.f;
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if (settings.use_multi_core.GetValue()) {
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@ -327,9 +325,11 @@ s64 NVFlinger::GetNextTicks() const {
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}
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}
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const auto next_ticks = ((1000000000 * (1LL << swap_interval)) / max_hertz);
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// As an extension, treat nonpositive swap interval as framerate multiplier.
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const f32 effective_fps = swap_interval <= 0 ? 120.f * static_cast<f32>(1 - swap_interval)
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: 60.f / static_cast<f32>(swap_interval);
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return static_cast<s64>(speed_scale * static_cast<float>(next_ticks));
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return static_cast<s64>(speed_scale * (1000000000.f / effective_fps));
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}
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} // namespace Service::NVFlinger
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@ -133,7 +133,7 @@ private:
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/// layers.
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u32 next_buffer_queue_id = 1;
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u32 swap_interval = 1;
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s32 swap_interval = 1;
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/// Event that handles screen composition.
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std::shared_ptr<Core::Timing::EventType> multi_composition_event;
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