ash/extensions/ext/
headless_surface.rs

1use crate::prelude::*;
2use crate::vk;
3use crate::RawPtr;
4use crate::{Entry, Instance};
5use std::ffi::CStr;
6use std::mem;
7
8/// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/VK_EXT_headless_surface.html>
9#[derive(Clone)]
10pub struct HeadlessSurface {
11    handle: vk::Instance,
12    fp: vk::ExtHeadlessSurfaceFn,
13}
14
15impl HeadlessSurface {
16    pub fn new(entry: &Entry, instance: &Instance) -> Self {
17        let handle = instance.handle();
18        let fp = vk::ExtHeadlessSurfaceFn::load(|name| unsafe {
19            mem::transmute(entry.get_instance_proc_addr(handle, name.as_ptr()))
20        });
21        Self { handle, fp }
22    }
23
24    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCreateHeadlessSurfaceEXT.html>
25    #[inline]
26    pub unsafe fn create_headless_surface(
27        &self,
28        create_info: &vk::HeadlessSurfaceCreateInfoEXT,
29        allocation_callbacks: Option<&vk::AllocationCallbacks>,
30    ) -> VkResult<vk::SurfaceKHR> {
31        let mut surface = mem::zeroed();
32        (self.fp.create_headless_surface_ext)(
33            self.handle,
34            create_info,
35            allocation_callbacks.as_raw_ptr(),
36            &mut surface,
37        )
38        .result_with_success(surface)
39    }
40
41    #[inline]
42    pub const fn name() -> &'static CStr {
43        vk::ExtHeadlessSurfaceFn::name()
44    }
45
46    #[inline]
47    pub fn fp(&self) -> &vk::ExtHeadlessSurfaceFn {
48        &self.fp
49    }
50
51    #[inline]
52    pub fn instance(&self) -> vk::Instance {
53        self.handle
54    }
55}
ash/extensions/ext/headless_surface.rs

ash/extensions/ext/
headless_surface.rs
