1 use crate::prelude::*;
2 use crate::vk;
3 use crate::{Device, Instance};
4 use std::ffi::CStr;
5 use std::mem;
6 
7 #[derive(Clone)]
8 pub struct TimelineSemaphore {
9     handle: vk::Device,
10     fp: vk::KhrTimelineSemaphoreFn,
11 }
12 
13 impl TimelineSemaphore {
new(instance: &Instance, device: &Device) -> Self14     pub fn new(instance: &Instance, device: &Device) -> Self {
15         let handle = device.handle();
16         let fp = vk::KhrTimelineSemaphoreFn::load(|name| unsafe {
17             mem::transmute(instance.get_device_proc_addr(handle, name.as_ptr()))
18         });
19         Self { handle, fp }
20     }
21 
22     /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetSemaphoreCounterValue.html>
23     #[inline]
get_semaphore_counter_value(&self, semaphore: vk::Semaphore) -> VkResult<u64>24     pub unsafe fn get_semaphore_counter_value(&self, semaphore: vk::Semaphore) -> VkResult<u64> {
25         let mut value = 0;
26         (self.fp.get_semaphore_counter_value_khr)(self.handle, semaphore, &mut value)
27             .result_with_success(value)
28     }
29 
30     /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkWaitSemaphores.html>
31     #[inline]
wait_semaphores( &self, wait_info: &vk::SemaphoreWaitInfo, timeout: u64, ) -> VkResult<()>32     pub unsafe fn wait_semaphores(
33         &self,
34         wait_info: &vk::SemaphoreWaitInfo,
35         timeout: u64,
36     ) -> VkResult<()> {
37         (self.fp.wait_semaphores_khr)(self.handle, wait_info, timeout).result()
38     }
39 
40     /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkSignalSemaphore.html>
41     #[inline]
signal_semaphore(&self, signal_info: &vk::SemaphoreSignalInfo) -> VkResult<()>42     pub unsafe fn signal_semaphore(&self, signal_info: &vk::SemaphoreSignalInfo) -> VkResult<()> {
43         (self.fp.signal_semaphore_khr)(self.handle, signal_info).result()
44     }
45 
46     #[inline]
name() -> &'static CStr47     pub const fn name() -> &'static CStr {
48         vk::KhrTimelineSemaphoreFn::name()
49     }
50 
51     #[inline]
fp(&self) -> &vk::KhrTimelineSemaphoreFn52     pub fn fp(&self) -> &vk::KhrTimelineSemaphoreFn {
53         &self.fp
54     }
55 
56     #[inline]
device(&self) -> vk::Device57     pub fn device(&self) -> vk::Device {
58         self.handle
59     }
60 }
61