use crate::prelude::*;
use crate::vk;
use crate::{Entry, Instance};
use std::ffi::CStr;
use std::mem;
#[derive(Clone)]
pub struct CalibratedTimestamps {
handle: vk::Instance,
fp: vk::ExtCalibratedTimestampsFn,
}
impl CalibratedTimestamps {
pub fn new(entry: &Entry, instance: &Instance) -> Self {
let handle = instance.handle();
let fp = vk::ExtCalibratedTimestampsFn::load(|name| unsafe {
mem::transmute(entry.get_instance_proc_addr(handle, name.as_ptr()))
});
Self { handle, fp }
}
#[inline]
pub unsafe fn get_physical_device_calibrateable_time_domains(
&self,
physical_device: vk::PhysicalDevice,
) -> VkResult<Vec<vk::TimeDomainEXT>> {
read_into_uninitialized_vector(|count, data| {
(self.fp.get_physical_device_calibrateable_time_domains_ext)(
physical_device,
count,
data,
)
})
}
#[inline]
pub unsafe fn get_calibrated_timestamps(
&self,
device: vk::Device,
info: &[vk::CalibratedTimestampInfoEXT],
) -> VkResult<(Vec<u64>, Vec<u64>)> {
let mut timestamps = vec![0u64; info.len()];
let mut max_deviation = vec![0u64; info.len()];
(self.fp.get_calibrated_timestamps_ext)(
device,
info.len() as u32,
info.as_ptr(),
timestamps.as_mut_ptr(),
max_deviation.as_mut_ptr(),
)
.result_with_success((timestamps, max_deviation))
}
#[inline]
pub const fn name() -> &'static CStr {
vk::ExtCalibratedTimestampsFn::name()
}
#[inline]
pub fn fp(&self) -> &vk::ExtCalibratedTimestampsFn {
&self.fp
}
#[inline]
pub fn instance(&self) -> vk::Instance {
self.handle
}
}