ash/extensions/khr/
maintenance4.rs

1use crate::vk;
2use crate::{Device, Instance};
3use std::ffi::CStr;
4use std::mem;
5
6#[derive(Clone)]
7pub struct Maintenance4 {
8    handle: vk::Device,
9    fp: vk::KhrMaintenance4Fn,
10}
11
12impl Maintenance4 {
13    pub fn new(instance: &Instance, device: &Device) -> Self {
14        let handle = device.handle();
15        let fp = vk::KhrMaintenance4Fn::load(|name| unsafe {
16            mem::transmute(instance.get_device_proc_addr(handle, name.as_ptr()))
17        });
18        Self { handle, fp }
19    }
20
21    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetDeviceBufferMemoryRequirementsKHR.html>
22    #[inline]
23    pub unsafe fn get_device_buffer_memory_requirements(
24        &self,
25        memory_requirements: &vk::DeviceBufferMemoryRequirementsKHR,
26        out: &mut vk::MemoryRequirements2,
27    ) {
28        (self.fp.get_device_buffer_memory_requirements_khr)(self.handle, memory_requirements, out)
29    }
30
31    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetDeviceImageMemoryRequirementsKHR.html>
32    #[inline]
33    pub unsafe fn get_device_image_memory_requirements(
34        &self,
35        memory_requirements: &vk::DeviceImageMemoryRequirementsKHR,
36        out: &mut vk::MemoryRequirements2,
37    ) {
38        (self.fp.get_device_image_memory_requirements_khr)(self.handle, memory_requirements, out)
39    }
40
41    /// Retrieve the number of elements to pass to [`get_device_image_sparse_memory_requirements()`][Self::get_device_image_sparse_memory_requirements()]
42    #[inline]
43    pub unsafe fn get_device_image_sparse_memory_requirements_len(
44        &self,
45        memory_requirements: &vk::DeviceImageMemoryRequirementsKHR,
46    ) -> usize {
47        let mut count = 0;
48        (self.fp.get_device_image_sparse_memory_requirements_khr)(
49            self.handle,
50            memory_requirements,
51            &mut count,
52            std::ptr::null_mut(),
53        );
54        count as usize
55    }
56
57    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetDeviceImageSparseMemoryRequirementsKHR.html>
58    ///
59    /// Call [`get_device_image_sparse_memory_requirements_len()`][Self::get_device_image_sparse_memory_requirements_len()] to query the number of elements to pass to `out`.
60    /// Be sure to [`Default::default()`]-initialize these elements and optionally set their `p_next` pointer.
61    #[inline]
62    pub unsafe fn get_device_image_sparse_memory_requirements(
63        &self,
64        memory_requirements: &vk::DeviceImageMemoryRequirementsKHR,
65        out: &mut [vk::SparseImageMemoryRequirements2],
66    ) {
67        let mut count = out.len() as u32;
68        (self.fp.get_device_image_sparse_memory_requirements_khr)(
69            self.handle,
70            memory_requirements,
71            &mut count,
72            out.as_mut_ptr(),
73        );
74        assert_eq!(count as usize, out.len());
75    }
76
77    #[inline]
78    pub const fn name() -> &'static CStr {
79        vk::KhrMaintenance4Fn::name()
80    }
81
82    #[inline]
83    pub fn fp(&self) -> &vk::KhrMaintenance4Fn {
84        &self.fp
85    }
86
87    #[inline]
88    pub fn device(&self) -> vk::Device {
89        self.handle
90    }
91}
ash/extensions/khr/maintenance4.rs

ash/extensions/khr/
maintenance4.rs
