use crate::prelude::*;
use crate::vk;
use crate::{Device, Instance};
use std::ffi::CStr;
use std::mem;
#[derive(Clone)]
pub struct ExternalMemoryFd {
handle: vk::Device,
fp: vk::KhrExternalMemoryFdFn,
}
impl ExternalMemoryFd {
pub fn new(instance: &Instance, device: &Device) -> Self {
let handle = device.handle();
let fp = vk::KhrExternalMemoryFdFn::load(|name| unsafe {
mem::transmute(instance.get_device_proc_addr(handle, name.as_ptr()))
});
Self { handle, fp }
}
#[inline]
pub unsafe fn get_memory_fd(&self, get_fd_info: &vk::MemoryGetFdInfoKHR) -> VkResult<i32> {
let mut fd = -1;
(self.fp.get_memory_fd_khr)(self.handle, get_fd_info, &mut fd).result_with_success(fd)
}
#[inline]
pub unsafe fn get_memory_fd_properties(
&self,
handle_type: vk::ExternalMemoryHandleTypeFlags,
fd: i32,
) -> VkResult<vk::MemoryFdPropertiesKHR> {
let mut memory_fd_properties = Default::default();
(self.fp.get_memory_fd_properties_khr)(
self.handle,
handle_type,
fd,
&mut memory_fd_properties,
)
.result_with_success(memory_fd_properties)
}
#[inline]
pub const fn name() -> &'static CStr {
vk::KhrExternalMemoryFdFn::name()
}
#[inline]
pub fn fp(&self) -> &vk::KhrExternalMemoryFdFn {
&self.fp
}
#[inline]
pub fn device(&self) -> vk::Device {
self.handle
}
}