jay_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        unsafe {
13            let mut group_count = mem::MaybeUninit::uninit();
14            (self.fp.enumerate_physical_device_groups_khr)(
15                self.handle,
16                group_count.as_mut_ptr(),
17                ptr::null_mut(),
18            )
19            .assume_init_on_success(group_count)
20            .map(|c| c as usize)
21        }
22    }
23
24    /// <https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkEnumeratePhysicalDeviceGroupsKHR.html>
25    ///
26    /// Call [`enumerate_physical_device_groups_len()`][Self::enumerate_physical_device_groups_len()] to query the number of elements to pass to `out`.
27    /// Be sure to [`Default::default()`]-initialize these elements and optionally set their `p_next` pointer.
28    #[inline]
29    pub unsafe fn enumerate_physical_device_groups(
30        &self,
31        out: &mut [vk::PhysicalDeviceGroupProperties<'_>],
32    ) -> VkResult<()> {
33        unsafe {
34            let mut count = out.len() as u32;
35            (self.fp.enumerate_physical_device_groups_khr)(
36                self.handle,
37                &mut count,
38                out.as_mut_ptr(),
39            )
40            .result()?;
41            assert_eq!(count as usize, out.len());
42            Ok(())
43        }
44    }
45}
jay_ash/extensions/khr/device_group_creation.rs

jay_ash/extensions/khr/
device_group_creation.rs
