blob: 11e53db044c64827de35530abdf14a8119c38a78 [file] [log] [blame]
// Copyright (c) 2017 The vulkano developers
// Licensed under the Apache License, Version 2.0
// <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT
// license <LICENSE-MIT or https://opensource.org/licenses/MIT>,
// at your option. All files in the project carrying such
// notice may not be copied, modified, or distributed except
// according to those terms.
use super::{AccessCheckError, FlushError, GpuFuture, SubmitAnyBuilder};
use crate::{
buffer::Buffer,
device::{Device, DeviceOwned, Queue},
image::{sys::Image, ImageLayout},
swapchain::Swapchain,
DeviceSize,
};
use std::{ops::Range, sync::Arc};
/// Builds a future that represents "now".
#[inline]
pub fn now(device: Arc<Device>) -> NowFuture {
NowFuture { device }
}
/// A dummy future that represents "now".
pub struct NowFuture {
device: Arc<Device>,
}
unsafe impl GpuFuture for NowFuture {
#[inline]
fn cleanup_finished(&mut self) {}
#[inline]
unsafe fn build_submission(&self) -> Result<SubmitAnyBuilder, FlushError> {
Ok(SubmitAnyBuilder::Empty)
}
#[inline]
fn flush(&self) -> Result<(), FlushError> {
Ok(())
}
#[inline]
unsafe fn signal_finished(&self) {}
#[inline]
fn queue_change_allowed(&self) -> bool {
true
}
#[inline]
fn queue(&self) -> Option<Arc<Queue>> {
None
}
#[inline]
fn check_buffer_access(
&self,
_buffer: &Buffer,
_range: Range<DeviceSize>,
_exclusive: bool,
_queue: &Queue,
) -> Result<(), AccessCheckError> {
Err(AccessCheckError::Unknown)
}
#[inline]
fn check_image_access(
&self,
_image: &Image,
_range: Range<DeviceSize>,
_exclusive: bool,
_expected_layout: ImageLayout,
_queue: &Queue,
) -> Result<(), AccessCheckError> {
Err(AccessCheckError::Unknown)
}
#[inline]
fn check_swapchain_image_acquired(
&self,
_swapchain: &Swapchain,
_image_index: u32,
_before: bool,
) -> Result<(), AccessCheckError> {
Err(AccessCheckError::Unknown)
}
}
unsafe impl DeviceOwned for NowFuture {
#[inline]
fn device(&self) -> &Arc<Device> {
&self.device
}
}