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use std::{ffi::CString, marker::PhantomData, ptr};
use crate::*;
pub struct Swapchain<G: Graphics> {
session: Session<G>,
handle: sys::Swapchain,
_marker: PhantomData<G>,
}
impl<G: Graphics> Swapchain<G> {
#[inline]
pub unsafe fn from_raw(session: Session<G>, handle: sys::Swapchain) -> Self {
Self {
session,
handle,
_marker: PhantomData,
}
}
#[inline]
pub fn as_raw(&self) -> sys::Swapchain {
self.handle
}
#[inline]
pub fn instance(&self) -> &Instance {
self.session.instance()
}
#[inline]
pub fn set_name(&self, name: &str) -> Result<()> {
if let Some(fp) = self.instance().exts().ext_debug_utils.as_ref() {
let name = CString::new(name).unwrap();
let info = sys::DebugUtilsObjectNameInfoEXT {
ty: sys::DebugUtilsObjectNameInfoEXT::TYPE,
next: ptr::null(),
object_type: ObjectType::SWAPCHAIN,
object_handle: self.as_raw().into_raw(),
object_name: name.as_ptr(),
};
unsafe {
cvt((fp.set_debug_utils_object_name)(
self.instance().as_raw(),
&info,
))?;
}
}
Ok(())
}
#[inline]
pub fn enumerate_images(&self) -> Result<Vec<G::SwapchainImage>> {
G::enumerate_swapchain_images(self)
}
#[inline]
pub fn acquire_image(&self) -> Result<u32> {
let info = sys::SwapchainImageAcquireInfo {
ty: sys::SwapchainImageAcquireInfo::TYPE,
next: ptr::null_mut(),
};
let mut out = 0;
unsafe {
cvt((self.fp().acquire_swapchain_image)(
self.as_raw(),
&info,
&mut out,
))?;
}
Ok(out)
}
#[inline]
pub unsafe fn wait_image(&self, timeout: Duration) -> Result<()> {
let info = sys::SwapchainImageWaitInfo {
ty: sys::SwapchainImageWaitInfo::TYPE,
next: ptr::null_mut(),
timeout,
};
cvt((self.fp().wait_swapchain_image)(self.as_raw(), &info))?;
Ok(())
}
#[inline]
pub unsafe fn release_image(&self) -> Result<()> {
let info = sys::SwapchainImageReleaseInfo {
ty: sys::SwapchainImageReleaseInfo::TYPE,
next: ptr::null_mut(),
};
cvt((self.fp().release_swapchain_image)(self.as_raw(), &info))?;
Ok(())
}
#[inline]
fn fp(&self) -> &raw::Instance {
self.session.instance().fp()
}
}
impl<G: Graphics> Drop for Swapchain<G> {
fn drop(&mut self) {
unsafe {
(self.fp().destroy_swapchain)(self.as_raw());
}
}
}