Create()

void Spices::NsightPerfGPUProfilerHUD::Create

(

VulkanState &

state

)

Create this.

Initialize the sampler any time after VkDevice initialization.

start a recording session and specify the sampling frequency, maximum decoding latency (explained below) and the number of concurrently unfinished frames (maxFrameLatency).

Todo

There remains a bug about off screen frames still fill in buffer, That will cause buffer is fulled useage.

Attention

we set Buffer size can hold 1 h data with 60 HZ.

Select a HUD configuration to record via the HudPresets class¡£

Initialize the data model, choose a window of time to store in the TimePlots, and specify the sampling interval.

Pass the newly created counter configuration to the sampler, and prepare the sample-to-frame data processing pipeline.

Initialize the sampler any time after VkDevice initialization.

start a recording session and specify the sampling frequency, maximum decoding latency (explained below) and the number of concurrently unfinished frames (maxFrameLatency).

Todo

There remains a bug about off screen frames still fill in buffer, That will cause buffer is fulled useage.

Attention

we set Buffer size can hold 1 h data with 60 HZ.

Select a HUD configuration to record via the HudPresets class¡£

Initialize the data model, choose a window of time to store in the TimePlots, and specify the sampling interval.

Pass the newly created counter configuration to the sampler, and prepare the sample-to-frame data processing pipeline.

Definition at line 41 of file NsightPerfGPUProfilerHUD.cpp.

    {
        SPICES_PROFILE_ZONE;
 
        NSPERF_CHECK(m_Sampler.Initialize(state.m_Instance, state.m_PhysicalDevice, state.m_Device))
 
        
        uint32_t samplingFrequencyInHz = SelectSamplingFrequency();
 
        uint32_t samplingIntervalInNs = 1000 * 1000 * 1000 / samplingFrequencyInHz; // 1 / 60 s.
        uint32_t maxDecodeLatencyInNs = 1000 * 1000 * 1000 * 10;                    // 10 s.
        size_t   maxFrameLatency = MaxFrameInFlight + 1;  // requires +1 due to this sample's synchronization model
        NSPERF_CHECK(m_Sampler.BeginSession(
            state.m_GraphicQueue          ,
            state.m_GraphicQueueFamily    , 
            samplingIntervalInNs          ,
            maxDecodeLatencyInNs          , 
            maxFrameLatency
        ))
 
        nv::perf::hud::HudPresets hudPresents;
        auto deviceIdentifiers = m_Sampler.GetGpuDeviceIdentifiers();
        NSPERF_CHECK(hudPresents.Initialize(deviceIdentifiers.pChipName))
        NSPERF_CHECK(m_HudDataModel.Load(hudPresents.GetPreset("SpicesEngineDefault")))
        
        double plotTimeWidthInSeconds = 4.0;
        NSPERF_CHECK(m_HudDataModel.Initialize(1.0 / samplingFrequencyInHz, plotTimeWidthInSeconds))
        
        NSPERF_CHECK(m_Sampler.SetConfig(&m_HudDataModel.GetCounterConfiguration()))
        NSPERF_CHECK(m_HudDataModel.PrepareSampleProcessing(m_Sampler.GetCounterData()))
    }

References SelectSamplingFrequency().

Referenced by EndFrame(), and NsightPerfGPUProfilerHUD().