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pub use crate::backend::Queue;
use {
crate::OutOfMemory,
std::{error::Error, fmt::Debug},
};
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
#[cfg_attr(feature = "serde-1", derive(serde::Serialize, serde::Deserialize))]
pub enum Capability {
Transfer,
Compute,
Graphics,
}
bitflags::bitflags! {
#[cfg_attr(feature = "serde-1", derive(serde::Serialize, serde::Deserialize))]
pub struct QueueCapabilityFlags: u32 {
const TRANSFER = 0b001;
const COMPUTE = 0b010;
const GRAPHICS = 0b100;
}
}
impl QueueCapabilityFlags {
pub fn supports(&self, other: Capability) -> bool {
match other {
Capability::Transfer => self.contains(Self::TRANSFER),
Capability::Compute => self.contains(Self::COMPUTE),
Capability::Graphics => self.contains(Self::GRAPHICS),
}
}
pub fn supports_graphics(&self) -> bool {
self.contains(Self::GRAPHICS)
}
pub fn supports_compute(&self) -> bool {
self.contains(Self::COMPUTE)
}
}
#[derive(Clone, Copy, Debug)]
#[cfg_attr(feature = "serde-1", derive(serde::Serialize, serde::Deserialize))]
pub struct FamilyInfo {
pub capabilities: QueueCapabilityFlags,
pub count: usize,
}
#[derive(Debug)]
pub struct Family {
pub capabilities: QueueCapabilityFlags,
pub queues: Vec<Queue>,
}
impl Family {
pub fn supports(&self, capability: Capability) -> bool {
self.capabilities.supports(capability)
}
pub fn take(&mut self, count: usize) -> impl Iterator<Item = Queue> + '_ {
std::iter::from_fn(move || self.queues.pop()).take(count)
}
}
pub trait QueuesQuery {
type Error: Error + 'static;
type Queues;
type Query: AsRef<[(usize, usize)]>;
type Collector;
fn query(self, families: &[FamilyInfo]) -> Result<(Self::Query, Self::Collector), Self::Error>;
fn collect(collector: Self::Collector, families: Vec<Family>) -> Self::Queues;
}
#[derive(Clone, Copy, Debug)]
pub struct QueuesQueryClosure<F>(pub F);
impl<F, Q, E> QueuesQuery for QueuesQueryClosure<F>
where
F: FnOnce(&[FamilyInfo]) -> Result<Q, E>,
Q: IntoIterator<Item = (usize, usize)>,
E: Error + 'static,
{
type Collector = ();
type Error = E;
type Query = Vec<(usize, usize)>;
type Queues = Vec<Family>;
fn query(self, families: &[FamilyInfo]) -> Result<(Self::Query, Self::Collector), E> {
Ok(((self.0)(families)?.into_iter().collect(), ()))
}
fn collect(_collector: (), families: Vec<Family>) -> Self::Queues {
families
}
}
#[derive(Clone, Copy, Debug)]
#[cfg_attr(feature = "serde-1", derive(serde::Serialize, serde::Deserialize))]
pub struct SingleQueueQuery(QueueCapabilityFlags);
impl SingleQueueQuery {
pub const COMPUTE: Self = SingleQueueQuery(QueueCapabilityFlags::COMPUTE);
pub const GENERAL: Self = SingleQueueQuery(QueueCapabilityFlags::from_bits_truncate(0b11));
pub const GRAPHICS: Self = SingleQueueQuery(QueueCapabilityFlags::GRAPHICS);
pub const TRANSFER: Self = SingleQueueQuery(QueueCapabilityFlags::TRANSFER);
}
#[derive(Clone, Copy, Debug)]
#[cfg_attr(feature = "serde-1", derive(serde::Serialize, serde::Deserialize))]
pub struct QueueNotFound(QueueCapabilityFlags);
impl std::fmt::Display for QueueNotFound {
fn fmt(&self, fmt: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
fmt,
"Could not find a queue with following capabilities: {:?}",
self.0,
)
}
}
impl std::error::Error for QueueNotFound {}
impl QueuesQuery for SingleQueueQuery {
type Collector = ();
type Error = QueueNotFound;
type Query = [(usize, usize); 1];
type Queues = Queue;
fn query(self, families: &[FamilyInfo]) -> Result<([(usize, usize); 1], ()), QueueNotFound> {
for (index, family) in families.iter().enumerate() {
if family.count > 0 && family.capabilities.contains(self.0) {
return Ok(([(index, 1)], ()));
}
}
Err(QueueNotFound(self.0))
}
fn collect(_collector: (), mut families: Vec<Family>) -> Queue {
assert_eq!(families.len(), 1);
assert_eq!(families[0].queues.len(), 1);
families.remove(0).queues.remove(0)
}
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[cfg_attr(feature = "serde-1", derive(serde::Serialize, serde::Deserialize))]
pub struct QueueId {
pub family: u32,
pub index: u32,
}
#[derive(Clone, Copy, Debug, thiserror::Error, PartialEq, Eq)]
pub enum PresentError {
#[error(transparent)]
OutOfMemory {
#[from]
source: OutOfMemory,
},
#[error("Surface is out of date")]
OutOfDate,
#[error("Surface was lost")]
SurfaceLost,
}
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum PresentOk {
Success,
Suboptimal,
OutOfDate,
SurfaceLost,
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub enum Ownership {
NotOwned,
Owned { family: u32 },
Transition { from: u32, to: u32 },
}