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Vulkan calibration function.

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This commit is contained in:
Bartosz Taudul 2020-07-07 20:21:38 +02:00
parent f6d320ebdc
commit c91c6be763
1 changed files with 25 additions and 0 deletions
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25
TracyVulkan.hpp
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@ -204,10 +204,35 @@ private:
return m_context;
}
tracy_force_inline void Calibrate( VkDevice device, int64_t& tCpu, int64_t& tGpu )
{
assert( m_timeDomain != VK_TIME_DOMAIN_DEVICE_EXT );
VkCalibratedTimestampInfoEXT spec[2] = {
{ VK_STRUCTURE_TYPE_CALIBRATED_TIMESTAMP_INFO_EXT, nullptr, VK_TIME_DOMAIN_DEVICE_EXT },
{ VK_STRUCTURE_TYPE_CALIBRATED_TIMESTAMP_INFO_EXT, nullptr, m_timeDomain },
};
uint64_t ts[2];
uint64_t deviation;
do
{
m_vkGetCalibratedTimestampsEXT( device, 2, spec, ts, &deviation );
}
while( deviation > m_deviation );
#if defined _WIN32 || defined __CYGWIN__
tGpu = ts[0];
tCpu = ts[1] * m_qpcToNs;
#else
assert( false );
#endif
}
VkDevice m_device;
VkQueryPool m_query;
VkTimeDomainEXT m_timeDomain;
uint64_t m_deviation;
int64_t m_qpcToNs;
int64_t m_prevCalibration;
uint8_t m_context;
unsigned int m_head;