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// Copyright (c) 2016 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 crate::image::view::ImageViewAbstract;
use crate::SafeDeref;
use std::sync::Arc;
//use sync::AccessFlags;
//use sync::PipelineStages;
/// A list of attachments.
// TODO: rework this trait
pub unsafe trait AttachmentsList {
fn num_attachments(&self) -> usize;
fn as_image_view_access(&self, index: usize) -> Option<&dyn ImageViewAbstract>;
}
unsafe impl<T> AttachmentsList for T
where
T: SafeDeref,
T::Target: AttachmentsList,
{
#[inline]
fn num_attachments(&self) -> usize {
(**self).num_attachments()
}
#[inline]
fn as_image_view_access(&self, index: usize) -> Option<&dyn ImageViewAbstract> {
(**self).as_image_view_access(index)
}
}
unsafe impl AttachmentsList for () {
#[inline]
fn num_attachments(&self) -> usize {
0
}
#[inline]
fn as_image_view_access(&self, _: usize) -> Option<&dyn ImageViewAbstract> {
None
}
}
unsafe impl AttachmentsList for Vec<Arc<dyn ImageViewAbstract + Send + Sync>> {
#[inline]
fn num_attachments(&self) -> usize {
self.len()
}
#[inline]
fn as_image_view_access(&self, index: usize) -> Option<&dyn ImageViewAbstract> {
self.get(index).map(|v| &**v as &_)
}
}
unsafe impl<A, B> AttachmentsList for (A, B)
where
A: AttachmentsList,
B: ImageViewAbstract,
{
#[inline]
fn num_attachments(&self) -> usize {
self.0.num_attachments() + 1
}
#[inline]
fn as_image_view_access(&self, index: usize) -> Option<&dyn ImageViewAbstract> {
if index == self.0.num_attachments() {
Some(&self.1)
} else {
self.0.as_image_view_access(index)
}
}
}
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