Safe Haskell	None
Language	Haskell2010

Vulkan.Extensions.VK_EXT_calibrated_timestamps

Synopsis

getPhysicalDeviceCalibrateableTimeDomainsEXT :: forall io. MonadIO io => PhysicalDevice -> io (Result, "timeDomains" ::: Vector TimeDomainEXT)
getCalibratedTimestampsEXT :: forall io. MonadIO io => Device -> ("timestampInfos" ::: Vector CalibratedTimestampInfoEXT) -> io ("timestamps" ::: Vector Word64, "maxDeviation" ::: Word64)
data CalibratedTimestampInfoEXT = CalibratedTimestampInfoEXT {
- timeDomain :: TimeDomainEXT
}
newtype TimeDomainEXT where
- TimeDomainEXT Int32
- pattern TIME_DOMAIN_DEVICE_EXT :: TimeDomainEXT
- pattern TIME_DOMAIN_CLOCK_MONOTONIC_EXT :: TimeDomainEXT
- pattern TIME_DOMAIN_CLOCK_MONOTONIC_RAW_EXT :: TimeDomainEXT
- pattern TIME_DOMAIN_QUERY_PERFORMANCE_COUNTER_EXT :: TimeDomainEXT
type EXT_CALIBRATED_TIMESTAMPS_SPEC_VERSION = 1
pattern EXT_CALIBRATED_TIMESTAMPS_SPEC_VERSION :: forall a. Integral a => a
type EXT_CALIBRATED_TIMESTAMPS_EXTENSION_NAME = "VK_EXT_calibrated_timestamps"
pattern EXT_CALIBRATED_TIMESTAMPS_EXTENSION_NAME :: forall a. (Eq a, IsString a) => a

Documentation

getPhysicalDeviceCalibrateableTimeDomainsEXT Source #

Arguments

:: forall io. MonadIO io
=> PhysicalDevice	`physicalDevice` is the physical device from which to query the set of calibrateable time domains.
-> io (Result, "timeDomains" ::: Vector TimeDomainEXT)

vkGetPhysicalDeviceCalibrateableTimeDomainsEXT - Query calibrateable time domains

Description

If pTimeDomains is NULL, then the number of calibrateable time domains supported for the given physicalDevice is returned in pTimeDomainCount. Otherwise, pTimeDomainCount must point to a variable set by the user to the number of elements in the pTimeDomains array, and on return the variable is overwritten with the number of values actually written to pTimeDomains. If the value of pTimeDomainCount is less than the number of calibrateable time domains supported, at most pTimeDomainCount values will be written to pTimeDomains. If pTimeDomainCount is smaller than the number of calibrateable time domains supported for the given physicalDevice, INCOMPLETE will be returned instead of SUCCESS to indicate that not all the available values were returned.

Valid Usage (Implicit)

physicalDevice must be a valid PhysicalDevice handle

pTimeDomainCount must be a valid pointer to a uint32_t value
If the value referenced by pTimeDomainCount is not 0, and pTimeDomains is not NULL, pTimeDomains must be a valid pointer to an array of pTimeDomainCount TimeDomainEXT values

Return Codes

Success

SUCCESS
INCOMPLETE

Failure

Description

Note

The maximum deviation may vary between calls to getCalibratedTimestampsEXT even for the same set of time domains due to implementation and platform specific reasons. It is the application’s responsibility to assess whether the returned maximum deviation makes the timestamp values suitable for any particular purpose and can choose to re-issue the timestamp calibration call pursuing a lower devation value.

Calibrated timestamp values can be extrapolated to estimate future coinciding timestamp values, however, depending on the nature of the time domains and other properties of the platform extrapolating values over a sufficiently long period of time may no longer be accurate enough to fit any particular purpose so applications are expected to re-calibrate the timestamps on a regular basis.

Return Codes

Success

SUCCESS

Failure

CalibratedTimestampInfoEXT
Fields timeDomain :: TimeDomainEXT `timeDomain` is a `TimeDomainEXT` value specifying the time domain from which the calibrated timestamp value should be returned. `timeDomain` must be one of the `TimeDomainEXT` values returned by `getPhysicalDeviceCalibrateableTimeDomainsEXT` `timeDomain` must be a valid `TimeDomainEXT` value

Instances

Instances details

Eq CalibratedTimestampInfoEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_calibrated_timestamps Methods (==) :: CalibratedTimestampInfoEXT -> CalibratedTimestampInfoEXT -> Bool # (/=) :: CalibratedTimestampInfoEXT -> CalibratedTimestampInfoEXT -> Bool #
Show CalibratedTimestampInfoEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_calibrated_timestamps Methods showsPrec :: Int -> CalibratedTimestampInfoEXT -> ShowS # show :: CalibratedTimestampInfoEXT -> String # showList :: [CalibratedTimestampInfoEXT] -> ShowS #
Storable CalibratedTimestampInfoEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_calibrated_timestamps Methods sizeOf :: CalibratedTimestampInfoEXT -> Int # alignment :: CalibratedTimestampInfoEXT -> Int # peekElemOff :: Ptr CalibratedTimestampInfoEXT -> Int -> IO CalibratedTimestampInfoEXT # pokeElemOff :: Ptr CalibratedTimestampInfoEXT -> Int -> CalibratedTimestampInfoEXT -> IO () # peekByteOff :: Ptr b -> Int -> IO CalibratedTimestampInfoEXT # pokeByteOff :: Ptr b -> Int -> CalibratedTimestampInfoEXT -> IO () # peek :: Ptr CalibratedTimestampInfoEXT -> IO CalibratedTimestampInfoEXT # poke :: Ptr CalibratedTimestampInfoEXT -> CalibratedTimestampInfoEXT -> IO () #
FromCStruct CalibratedTimestampInfoEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_calibrated_timestamps Methods peekCStruct :: Ptr CalibratedTimestampInfoEXT -> IO CalibratedTimestampInfoEXT Source #
ToCStruct CalibratedTimestampInfoEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_calibrated_timestamps Methods withCStruct :: CalibratedTimestampInfoEXT -> (Ptr CalibratedTimestampInfoEXT -> IO b) -> IO b Source # pokeCStruct :: Ptr CalibratedTimestampInfoEXT -> CalibratedTimestampInfoEXT -> IO b -> IO b Source # withZeroCStruct :: (Ptr CalibratedTimestampInfoEXT -> IO b) -> IO b Source # pokeZeroCStruct :: Ptr CalibratedTimestampInfoEXT -> IO b -> IO b Source # cStructSize :: Int Source # cStructAlignment :: Int Source #
Zero CalibratedTimestampInfoEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_calibrated_timestamps Methods zero :: CalibratedTimestampInfoEXT Source #

newtype TimeDomainEXT Source #

VkTimeDomainEXT - Supported time domains

Description

struct timespec tv;
clock_gettime(CLOCK_MONOTONIC, &tv);
return tv.tv_nsec + tv.tv_sec*1000000000ull;

struct timespec tv;
clock_gettime(CLOCK_MONOTONIC_RAW, &tv);
return tv.tv_nsec + tv.tv_sec*1000000000ull;

LARGE_INTEGER counter;
QueryPerformanceCounter(&counter);
return counter.QuadPart;

pattern TIME_DOMAIN_DEVICE_EXT :: TimeDomainEXT	`TIME_DOMAIN_DEVICE_EXT` specifies the device time domain. Timestamp values in this time domain use the same units and are comparable with device timestamp values captured using `cmdWriteTimestamp` and are defined to be incrementing according to the timestampPeriod of the device.
pattern TIME_DOMAIN_CLOCK_MONOTONIC_EXT :: TimeDomainEXT	`TIME_DOMAIN_CLOCK_MONOTONIC_EXT` specifies the CLOCK_MONOTONIC time domain available on POSIX platforms. Timestamp values in this time domain are in units of nanoseconds and are comparable with platform timestamp values captured using the POSIX clock_gettime API as computed by this example:
pattern TIME_DOMAIN_CLOCK_MONOTONIC_RAW_EXT :: TimeDomainEXT	`TIME_DOMAIN_CLOCK_MONOTONIC_RAW_EXT` specifies the CLOCK_MONOTONIC_RAW time domain available on POSIX platforms. Timestamp values in this time domain are in units of nanoseconds and are comparable with platform timestamp values captured using the POSIX clock_gettime API as computed by this example:
pattern TIME_DOMAIN_QUERY_PERFORMANCE_COUNTER_EXT :: TimeDomainEXT	`TIME_DOMAIN_QUERY_PERFORMANCE_COUNTER_EXT` specifies the performance counter (QPC) time domain available on Windows. Timestamp values in this time domain are in the same units as those provided by the Windows QueryPerformanceCounter API and are comparable with platform timestamp values captured using that API as computed by this example:

Instances

Instances details

Eq TimeDomainEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_calibrated_timestamps Methods (==) :: TimeDomainEXT -> TimeDomainEXT -> Bool # (/=) :: TimeDomainEXT -> TimeDomainEXT -> Bool #
Ord TimeDomainEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_calibrated_timestamps Methods compare :: TimeDomainEXT -> TimeDomainEXT -> Ordering # (<) :: TimeDomainEXT -> TimeDomainEXT -> Bool # (<=) :: TimeDomainEXT -> TimeDomainEXT -> Bool # (>) :: TimeDomainEXT -> TimeDomainEXT -> Bool # (>=) :: TimeDomainEXT -> TimeDomainEXT -> Bool # max :: TimeDomainEXT -> TimeDomainEXT -> TimeDomainEXT # min :: TimeDomainEXT -> TimeDomainEXT -> TimeDomainEXT #
Read TimeDomainEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_calibrated_timestamps Methods readsPrec :: Int -> ReadS TimeDomainEXT # readList :: ReadS [TimeDomainEXT] # readPrec :: ReadPrec TimeDomainEXT # readListPrec :: ReadPrec [TimeDomainEXT] #
Show TimeDomainEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_calibrated_timestamps Methods showsPrec :: Int -> TimeDomainEXT -> ShowS # show :: TimeDomainEXT -> String # showList :: [TimeDomainEXT] -> ShowS #
Storable TimeDomainEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_calibrated_timestamps Methods sizeOf :: TimeDomainEXT -> Int # alignment :: TimeDomainEXT -> Int # peekElemOff :: Ptr TimeDomainEXT -> Int -> IO TimeDomainEXT # pokeElemOff :: Ptr TimeDomainEXT -> Int -> TimeDomainEXT -> IO () # peekByteOff :: Ptr b -> Int -> IO TimeDomainEXT # pokeByteOff :: Ptr b -> Int -> TimeDomainEXT -> IO () # peek :: Ptr TimeDomainEXT -> IO TimeDomainEXT # poke :: Ptr TimeDomainEXT -> TimeDomainEXT -> IO () #
Zero TimeDomainEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_calibrated_timestamps Methods zero :: TimeDomainEXT Source #

type EXT_CALIBRATED_TIMESTAMPS_SPEC_VERSION = 1 Source #

pattern EXT_CALIBRATED_TIMESTAMPS_SPEC_VERSION :: forall a. Integral a => a Source #

type EXT_CALIBRATED_TIMESTAMPS_EXTENSION_NAME = "VK_EXT_calibrated_timestamps" Source #

pattern EXT_CALIBRATED_TIMESTAMPS_EXTENSION_NAME :: forall a. (Eq a, IsString a) => a Source #

Documentation

Description

Valid Usage (Implicit)

Return Codes

See Also

Description

Return Codes

See Also

Valid Usage (Implicit)

See Also

Instances

Description

See Also

Instances

:: forall io. MonadIO io
=> Device	`device` is the logical device used to perform the query. `device` must be a valid `Device` handle
-> ("timestampInfos" ::: Vector CalibratedTimestampInfoEXT)	`pTimestampInfos` is a pointer to an array of `timestampCount` `CalibratedTimestampInfoEXT` structures, describing the time domains the calibrated timestamps should be captured from. `pTimestampInfos` must be a valid pointer to an array of `timestampCount` valid `CalibratedTimestampInfoEXT` structures
-> io ("timestamps" ::: Vector Word64, "maxDeviation" ::: Word64)