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OpenGL: Add MythOpenGLPerf - an OpenGL timer
- a simple sub-class of QOpenGLTimeMonitor to record the exection time of blocks of OpenGL code - add OpenGL performance monitoring for VideoOutputOpenGL and run when - v gpu verbosity is enabled (i.e. mythfrontend -v gpu) - execution time is recorded for texture upload (when applicable), framebuffer clearing, rendering, flushing and the final framebuffer swap.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| // MythTV | ||
| #include "mythlogging.h" | ||
| #include "mythopenglperf.h" | ||
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| /*! \class MythOpenGLPerf | ||
| * \brief A simple overload of QOpenGLTimeMonitor to record and log OpenGL execution intervals | ||
| */ | ||
| MythOpenGLPerf::MythOpenGLPerf(const QString &Name, | ||
| QVector<QString> Names, | ||
| int SampleCount) | ||
| : m_name(Name), | ||
| m_totalSamples(SampleCount), | ||
| m_timerNames(Names) | ||
| { | ||
| while (m_timerData.size() < m_timerNames.size()) | ||
| m_timerData.append(0); | ||
|
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| setSampleCount(static_cast<int>(m_timerNames.size()) + 1); | ||
| if (!create()) | ||
| { | ||
| LOG(VB_GENERAL, LOG_WARNING, m_name + "Failed to initialise OpenGL timers"); | ||
| m_timersReady = false; | ||
| return; | ||
| } | ||
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| LOG(VB_GENERAL, LOG_INFO, m_name + QString("Created %1 GL timers- averaging over %2 samples") | ||
| .arg(sampleCount()).arg(m_totalSamples)); | ||
| } | ||
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| int MythOpenGLPerf::GetTimersRunning(void) | ||
| { | ||
| return m_timersRunning; | ||
| } | ||
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| void MythOpenGLPerf::RecordSample(void) | ||
| { | ||
| if (m_timersReady && isCreated()) | ||
| { | ||
| m_timersRunning++; | ||
| recordSample(); | ||
| } | ||
| } | ||
|
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| void MythOpenGLPerf::LogSamples(void) | ||
| { | ||
| if (!(isCreated() && isResultAvailable())) | ||
| { | ||
| m_timersReady = false; | ||
| return; | ||
| } | ||
|
|
||
| // retrieve the samples | ||
| QVector<GLuint64> samples = waitForIntervals(); | ||
|
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||
| // ensure we have the correct number | ||
| if (samples.size() != m_timerData.size()) | ||
| { | ||
| LOG(VB_GENERAL, LOG_ERR, m_name + "Incorrect sample count %1 %2 %3"); | ||
| reset(); | ||
| m_timersRunning = 0; | ||
| return; | ||
| } | ||
|
|
||
| // increment our running totals | ||
| for (int i = 0; i < samples.size(); ++i) | ||
| m_timerData[i] += samples[i]; | ||
| m_sampleCount++; | ||
|
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||
| // log and reset when necessary | ||
| if (m_sampleCount > m_totalSamples) | ||
| { | ||
| m_sampleCount = 0; | ||
| QStringList results; | ||
| GLuint64 total = 0; | ||
| for (int i = 0; i < m_timerData.size(); ++i) | ||
| { | ||
| results.append(m_timerNames[i] + QString::number((m_timerData[i] / 1000000000.0) / m_totalSamples, '0', 4)); | ||
| total += m_timerData[i]; | ||
| m_timerData[i] = 0; | ||
| } | ||
| LOG(VB_GPU, LOG_INFO, m_name + results.join(" ") + | ||
| QString(" Total fps: %1").arg(1000000000.0 / (static_cast<double>(total) / m_totalSamples))); | ||
| } | ||
|
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||
| // clear timers | ||
| m_timersReady = true; | ||
| m_timersRunning = 0; | ||
| reset(); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| #ifndef MYTHOPENGLPERF_H | ||
| #define MYTHOPENGLPERF_H | ||
|
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| // Qt | ||
| #include <QVector> | ||
| #include <QOpenGLTimeMonitor> | ||
|
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| // MythTV | ||
| #include "mythuiexp.h" | ||
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| class MUI_PUBLIC MythOpenGLPerf : public QOpenGLTimeMonitor | ||
| { | ||
| public: | ||
| MythOpenGLPerf(const QString &Name, QVector<QString> Names, int SampleCount = 30); | ||
| void RecordSample (void); | ||
| void LogSamples (void); | ||
| int GetTimersRunning(void); | ||
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| private: | ||
| QString m_name { }; | ||
| int m_sampleCount { 0 }; | ||
| int m_totalSamples { 30 }; | ||
| bool m_timersReady { true }; | ||
| int m_timersRunning { 0 }; | ||
| QVector<GLuint64> m_timerData { 0 }; | ||
| QVector<QString> m_timerNames { }; | ||
| }; | ||
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| #endif // MYTHOPENGLPERF_H |