ash/extensions/khr/
device_group_creation.rs

1//! <https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VK_KHR_device_group_creation.html>
2
3use crate::prelude::*;
4use crate::vk;
5use core::mem;
6use core::ptr;
7
8impl crate::khr::device_group_creation::Instance {
9    /// Retrieve the number of elements to pass to [`enumerate_physical_device_groups()`][Self::enumerate_physical_device_groups()]
10    #[inline]
11    pub unsafe fn enumerate_physical_device_groups_len(&self) -> VkResult<usize> {
12        let mut group_count = mem::MaybeUninit::uninit();
13        (self.fp.enumerate_physical_device_groups_khr)(
14            self.handle,
15            group_count.as_mut_ptr(),
16            ptr::null_mut(),
17        )
18        .assume_init_on_success(group_count)
19        .map(|c| c as usize)
20    }
21
22    /// <https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkEnumeratePhysicalDeviceGroupsKHR.html>
23    ///
24    /// Call [`enumerate_physical_device_groups_len()`][Self::enumerate_physical_device_groups_len()] to query the number of elements to pass to `out`.
25    /// Be sure to [`Default::default()`]-initialize these elements and optionally set their `p_next` pointer.
26    #[inline]
27    pub unsafe fn enumerate_physical_device_groups(
28        &self,
29        out: &mut [vk::PhysicalDeviceGroupProperties<'_>],
30    ) -> VkResult<()> {
31        let mut count = out.len() as u32;
32        (self.fp.enumerate_physical_device_groups_khr)(self.handle, &mut count, out.as_mut_ptr())
33            .result()?;
34        assert_eq!(count as usize, out.len());
35        Ok(())
36    }
37}
ash/extensions/khr/device_group_creation.rs

ash/extensions/khr/
device_group_creation.rs
