ash/extensions/khr/
get_memory_requirements2.rs

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1use crate::vk;
2use crate::{Device, Instance};
3use std::ffi::CStr;
4use std::mem;
5use std::ptr;
6
7#[derive(Clone)]
8pub struct GetMemoryRequirements2 {
9    handle: vk::Device,
10    fp: vk::KhrGetMemoryRequirements2Fn,
11}
12
13impl GetMemoryRequirements2 {
14    pub fn new(instance: &Instance, device: &Device) -> Self {
15        let handle = device.handle();
16        let fp = vk::KhrGetMemoryRequirements2Fn::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/vkGetBufferMemoryRequirements2KHR.html>
23    pub unsafe fn get_buffer_memory_requirements2(
24        &self,
25        info: &vk::BufferMemoryRequirementsInfo2KHR,
26        memory_requirements: &mut vk::MemoryRequirements2KHR,
27    ) {
28        (self.fp.get_buffer_memory_requirements2_khr)(self.handle, info, memory_requirements);
29    }
30
31    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetImageMemoryRequirements2KHR.html>
32    pub unsafe fn get_image_memory_requirements2(
33        &self,
34        info: &vk::ImageMemoryRequirementsInfo2KHR,
35        memory_requirements: &mut vk::MemoryRequirements2KHR,
36    ) {
37        (self.fp.get_image_memory_requirements2_khr)(self.handle, info, memory_requirements);
38    }
39
40    /// Retrieve the number of elements to pass to [`get_image_sparse_memory_requirements2()`][Self::get_image_sparse_memory_requirements2()]
41    pub unsafe fn get_image_sparse_memory_requirements2_len(
42        &self,
43        info: &vk::ImageSparseMemoryRequirementsInfo2KHR,
44    ) -> usize {
45        let mut count = 0;
46        (self.fp.get_image_sparse_memory_requirements2_khr)(
47            self.handle,
48            info,
49            &mut count,
50            ptr::null_mut(),
51        );
52        count as usize
53    }
54
55    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetImageSparseMemoryRequirements2KHR.html>
56    ///
57    /// Call [`get_image_sparse_memory_requirements2_len()`][Self::get_image_sparse_memory_requirements2_len()] to query the number of elements to pass to `out`.
58    /// Be sure to [`Default::default()`]-initialize these elements and optionally set their `p_next` pointer.
59    pub unsafe fn get_image_sparse_memory_requirements2(
60        &self,
61        info: &vk::ImageSparseMemoryRequirementsInfo2KHR,
62        out: &mut [vk::SparseImageMemoryRequirements2KHR],
63    ) {
64        let mut count = out.len() as u32;
65        (self.fp.get_image_sparse_memory_requirements2_khr)(
66            self.handle,
67            info,
68            &mut count,
69            out.as_mut_ptr(),
70        );
71        assert_eq!(count as usize, out.len());
72    }
73
74    pub const fn name() -> &'static CStr {
75        vk::KhrGetMemoryRequirements2Fn::name()
76    }
77
78    pub fn fp(&self) -> &vk::KhrGetMemoryRequirements2Fn {
79        &self.fp
80    }
81
82    pub fn device(&self) -> vk::Device {
83        self.handle
84    }
85}
ash/extensions/khr/get_memory_requirements2.rs

ash/extensions/khr/
get_memory_requirements2.rs
