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|
use crate::{
binding_model,
hal_api::HalApi,
hub::Hub,
id::{BindGroupLayoutId, PipelineLayoutId},
resource::{Buffer, BufferAccessResult},
resource::{BufferAccessError, BufferMapOperation},
resource_log, Label, DOWNLEVEL_ERROR_MESSAGE,
};
use arrayvec::ArrayVec;
use hal::Device as _;
use smallvec::SmallVec;
use std::os::raw::c_char;
use thiserror::Error;
use wgt::{BufferAddress, DeviceLostReason, TextureFormat};
use std::{iter, num::NonZeroU32, ptr};
pub mod any_device;
pub(crate) mod bgl;
pub mod global;
mod life;
pub mod queue;
pub mod resource;
#[cfg(any(feature = "trace", feature = "replay"))]
pub mod trace;
pub use {life::WaitIdleError, resource::Device};
pub const SHADER_STAGE_COUNT: usize = hal::MAX_CONCURRENT_SHADER_STAGES;
// Should be large enough for the largest possible texture row. This
// value is enough for a 16k texture with float4 format.
pub(crate) const ZERO_BUFFER_SIZE: BufferAddress = 512 << 10;
const CLEANUP_WAIT_MS: u32 = 5000;
const IMPLICIT_BIND_GROUP_LAYOUT_ERROR_LABEL: &str = "Implicit BindGroupLayout in the Error State";
const ENTRYPOINT_FAILURE_ERROR: &str = "The given EntryPoint is Invalid";
pub type DeviceDescriptor<'a> = wgt::DeviceDescriptor<Label<'a>>;
#[repr(C)]
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub enum HostMap {
Read,
Write,
}
#[derive(Clone, Debug, Hash, PartialEq)]
#[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
pub(crate) struct AttachmentData<T> {
pub colors: ArrayVec<Option<T>, { hal::MAX_COLOR_ATTACHMENTS }>,
pub resolves: ArrayVec<T, { hal::MAX_COLOR_ATTACHMENTS }>,
pub depth_stencil: Option<T>,
}
impl<T: PartialEq> Eq for AttachmentData<T> {}
impl<T> AttachmentData<T> {
pub(crate) fn map<U, F: Fn(&T) -> U>(&self, fun: F) -> AttachmentData<U> {
AttachmentData {
colors: self.colors.iter().map(|c| c.as_ref().map(&fun)).collect(),
resolves: self.resolves.iter().map(&fun).collect(),
depth_stencil: self.depth_stencil.as_ref().map(&fun),
}
}
}
#[derive(Debug, Copy, Clone)]
pub enum RenderPassCompatibilityCheckType {
RenderPipeline,
RenderBundle,
}
#[derive(Clone, Debug, Hash, PartialEq)]
#[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
pub(crate) struct RenderPassContext {
pub attachments: AttachmentData<TextureFormat>,
pub sample_count: u32,
pub multiview: Option<NonZeroU32>,
}
#[derive(Clone, Debug, Error)]
#[non_exhaustive]
pub enum RenderPassCompatibilityError {
#[error(
"Incompatible color attachments at indices {indices:?}: the RenderPass uses textures with formats {expected:?} but the {ty:?} uses attachments with formats {actual:?}",
)]
IncompatibleColorAttachment {
indices: Vec<usize>,
expected: Vec<Option<TextureFormat>>,
actual: Vec<Option<TextureFormat>>,
ty: RenderPassCompatibilityCheckType,
},
#[error(
"Incompatible depth-stencil attachment format: the RenderPass uses a texture with format {expected:?} but the {ty:?} uses an attachment with format {actual:?}",
)]
IncompatibleDepthStencilAttachment {
expected: Option<TextureFormat>,
actual: Option<TextureFormat>,
ty: RenderPassCompatibilityCheckType,
},
#[error(
"Incompatible sample count: the RenderPass uses textures with sample count {expected:?} but the {ty:?} uses attachments with format {actual:?}",
)]
IncompatibleSampleCount {
expected: u32,
actual: u32,
ty: RenderPassCompatibilityCheckType,
},
#[error("Incompatible multiview setting: the RenderPass uses setting {expected:?} but the {ty:?} uses setting {actual:?}")]
IncompatibleMultiview {
expected: Option<NonZeroU32>,
actual: Option<NonZeroU32>,
ty: RenderPassCompatibilityCheckType,
},
}
impl RenderPassContext {
// Assumes the renderpass only contains one subpass
pub(crate) fn check_compatible(
&self,
other: &Self,
ty: RenderPassCompatibilityCheckType,
) -> Result<(), RenderPassCompatibilityError> {
if self.attachments.colors != other.attachments.colors {
let indices = self
.attachments
.colors
.iter()
.zip(&other.attachments.colors)
.enumerate()
.filter_map(|(idx, (left, right))| (left != right).then_some(idx))
.collect();
return Err(RenderPassCompatibilityError::IncompatibleColorAttachment {
indices,
expected: self.attachments.colors.iter().cloned().collect(),
actual: other.attachments.colors.iter().cloned().collect(),
ty,
});
}
if self.attachments.depth_stencil != other.attachments.depth_stencil {
return Err(
RenderPassCompatibilityError::IncompatibleDepthStencilAttachment {
expected: self.attachments.depth_stencil,
actual: other.attachments.depth_stencil,
ty,
},
);
}
if self.sample_count != other.sample_count {
return Err(RenderPassCompatibilityError::IncompatibleSampleCount {
expected: self.sample_count,
actual: other.sample_count,
ty,
});
}
if self.multiview != other.multiview {
return Err(RenderPassCompatibilityError::IncompatibleMultiview {
expected: self.multiview,
actual: other.multiview,
ty,
});
}
Ok(())
}
}
pub type BufferMapPendingClosure = (BufferMapOperation, BufferAccessResult);
#[derive(Default)]
pub struct UserClosures {
pub mappings: Vec<BufferMapPendingClosure>,
pub submissions: SmallVec<[queue::SubmittedWorkDoneClosure; 1]>,
pub device_lost_invocations: SmallVec<[DeviceLostInvocation; 1]>,
}
impl UserClosures {
fn extend(&mut self, other: Self) {
self.mappings.extend(other.mappings);
self.submissions.extend(other.submissions);
self.device_lost_invocations
.extend(other.device_lost_invocations);
}
fn fire(self) {
// Note: this logic is specifically moved out of `handle_mapping()` in order to
// have nothing locked by the time we execute users callback code.
// Mappings _must_ be fired before submissions, as the spec requires all mapping callbacks that are registered before
// a on_submitted_work_done callback to be fired before the on_submitted_work_done callback.
for (mut operation, status) in self.mappings {
if let Some(callback) = operation.callback.take() {
callback.call(status);
}
}
for closure in self.submissions {
closure.call();
}
for invocation in self.device_lost_invocations {
invocation
.closure
.call(invocation.reason, invocation.message);
}
}
}
#[cfg(send_sync)]
pub type DeviceLostCallback = Box<dyn Fn(DeviceLostReason, String) + Send + 'static>;
#[cfg(not(send_sync))]
pub type DeviceLostCallback = Box<dyn Fn(DeviceLostReason, String) + 'static>;
pub struct DeviceLostClosureRust {
pub callback: DeviceLostCallback,
consumed: bool,
}
impl Drop for DeviceLostClosureRust {
fn drop(&mut self) {
if !self.consumed {
panic!("DeviceLostClosureRust must be consumed before it is dropped.");
}
}
}
#[repr(C)]
pub struct DeviceLostClosureC {
pub callback: unsafe extern "C" fn(user_data: *mut u8, reason: u8, message: *const c_char),
pub user_data: *mut u8,
consumed: bool,
}
#[cfg(send_sync)]
unsafe impl Send for DeviceLostClosureC {}
impl Drop for DeviceLostClosureC {
fn drop(&mut self) {
if !self.consumed {
panic!("DeviceLostClosureC must be consumed before it is dropped.");
}
}
}
pub struct DeviceLostClosure {
// We wrap this so creating the enum in the C variant can be unsafe,
// allowing our call function to be safe.
inner: DeviceLostClosureInner,
}
pub struct DeviceLostInvocation {
closure: DeviceLostClosure,
reason: DeviceLostReason,
message: String,
}
enum DeviceLostClosureInner {
Rust { inner: DeviceLostClosureRust },
C { inner: DeviceLostClosureC },
}
impl DeviceLostClosure {
pub fn from_rust(callback: DeviceLostCallback) -> Self {
let inner = DeviceLostClosureRust {
callback,
consumed: false,
};
Self {
inner: DeviceLostClosureInner::Rust { inner },
}
}
/// # Safety
///
/// - The callback pointer must be valid to call with the provided `user_data`
/// pointer.
///
/// - Both pointers must point to `'static` data, as the callback may happen at
/// an unspecified time.
pub unsafe fn from_c(mut closure: DeviceLostClosureC) -> Self {
// Build an inner with the values from closure, ensuring that
// inner.consumed is false.
let inner = DeviceLostClosureC {
callback: closure.callback,
user_data: closure.user_data,
consumed: false,
};
// Mark the original closure as consumed, so we can safely drop it.
closure.consumed = true;
Self {
inner: DeviceLostClosureInner::C { inner },
}
}
pub(crate) fn call(self, reason: DeviceLostReason, message: String) {
match self.inner {
DeviceLostClosureInner::Rust { mut inner } => {
inner.consumed = true;
(inner.callback)(reason, message)
}
// SAFETY: the contract of the call to from_c says that this unsafe is sound.
DeviceLostClosureInner::C { mut inner } => unsafe {
inner.consumed = true;
// Ensure message is structured as a null-terminated C string. It only
// needs to live as long as the callback invocation.
let message = std::ffi::CString::new(message).unwrap();
(inner.callback)(inner.user_data, reason as u8, message.as_ptr())
},
}
}
}
fn map_buffer<A: HalApi>(
raw: &A::Device,
buffer: &Buffer<A>,
offset: BufferAddress,
size: BufferAddress,
kind: HostMap,
) -> Result<ptr::NonNull<u8>, BufferAccessError> {
let snatch_guard = buffer.device.snatchable_lock.read();
let raw_buffer = buffer
.raw(&snatch_guard)
.ok_or(BufferAccessError::Destroyed)?;
let mapping = unsafe {
raw.map_buffer(raw_buffer, offset..offset + size)
.map_err(DeviceError::from)?
};
*buffer.sync_mapped_writes.lock() = match kind {
HostMap::Read if !mapping.is_coherent => unsafe {
raw.invalidate_mapped_ranges(raw_buffer, iter::once(offset..offset + size));
None
},
HostMap::Write if !mapping.is_coherent => Some(offset..offset + size),
_ => None,
};
assert_eq!(offset % wgt::COPY_BUFFER_ALIGNMENT, 0);
assert_eq!(size % wgt::COPY_BUFFER_ALIGNMENT, 0);
// Zero out uninitialized parts of the mapping. (Spec dictates all resources
// behave as if they were initialized with zero)
//
// If this is a read mapping, ideally we would use a `clear_buffer` command
// before reading the data from GPU (i.e. `invalidate_range`). However, this
// would require us to kick off and wait for a command buffer or piggy back
// on an existing one (the later is likely the only worthwhile option). As
// reading uninitialized memory isn't a particular important path to
// support, we instead just initialize the memory here and make sure it is
// GPU visible, so this happens at max only once for every buffer region.
//
// If this is a write mapping zeroing out the memory here is the only
// reasonable way as all data is pushed to GPU anyways.
// No need to flush if it is flushed later anyways.
let zero_init_needs_flush_now =
mapping.is_coherent && buffer.sync_mapped_writes.lock().is_none();
let mapped = unsafe { std::slice::from_raw_parts_mut(mapping.ptr.as_ptr(), size as usize) };
for uninitialized in buffer
.initialization_status
.write()
.drain(offset..(size + offset))
{
// The mapping's pointer is already offset, however we track the
// uninitialized range relative to the buffer's start.
let fill_range =
(uninitialized.start - offset) as usize..(uninitialized.end - offset) as usize;
mapped[fill_range].fill(0);
if zero_init_needs_flush_now {
unsafe { raw.flush_mapped_ranges(raw_buffer, iter::once(uninitialized)) };
}
}
Ok(mapping.ptr)
}
pub(crate) struct CommandAllocator<A: HalApi> {
free_encoders: Vec<A::CommandEncoder>,
}
impl<A: HalApi> CommandAllocator<A> {
fn acquire_encoder(
&mut self,
device: &A::Device,
queue: &A::Queue,
) -> Result<A::CommandEncoder, hal::DeviceError> {
match self.free_encoders.pop() {
Some(encoder) => Ok(encoder),
None => unsafe {
let hal_desc = hal::CommandEncoderDescriptor { label: None, queue };
device.create_command_encoder(&hal_desc)
},
}
}
fn release_encoder(&mut self, encoder: A::CommandEncoder) {
self.free_encoders.push(encoder);
}
fn dispose(self, device: &A::Device) {
resource_log!(
"CommandAllocator::dispose encoders {}",
self.free_encoders.len()
);
for cmd_encoder in self.free_encoders {
unsafe {
device.destroy_command_encoder(cmd_encoder);
}
}
}
}
#[derive(Clone, Debug, Error)]
#[error("Device is invalid")]
pub struct InvalidDevice;
#[derive(Clone, Debug, Error)]
#[non_exhaustive]
pub enum DeviceError {
#[error("Parent device is invalid.")]
Invalid,
#[error("Parent device is lost")]
Lost,
#[error("Not enough memory left.")]
OutOfMemory,
#[error("Creation of a resource failed for a reason other than running out of memory.")]
ResourceCreationFailed,
#[error("QueueId is invalid")]
InvalidQueueId,
#[error("Attempt to use a resource with a different device from the one that created it")]
WrongDevice,
}
impl From<hal::DeviceError> for DeviceError {
fn from(error: hal::DeviceError) -> Self {
match error {
hal::DeviceError::Lost => DeviceError::Lost,
hal::DeviceError::OutOfMemory => DeviceError::OutOfMemory,
hal::DeviceError::ResourceCreationFailed => DeviceError::ResourceCreationFailed,
}
}
}
#[derive(Clone, Debug, Error)]
#[error("Features {0:?} are required but not enabled on the device")]
pub struct MissingFeatures(pub wgt::Features);
#[derive(Clone, Debug, Error)]
#[error(
"Downlevel flags {0:?} are required but not supported on the device.\n{}",
DOWNLEVEL_ERROR_MESSAGE
)]
pub struct MissingDownlevelFlags(pub wgt::DownlevelFlags);
#[derive(Clone, Debug)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct ImplicitPipelineContext {
pub root_id: PipelineLayoutId,
pub group_ids: ArrayVec<BindGroupLayoutId, { hal::MAX_BIND_GROUPS }>,
}
pub struct ImplicitPipelineIds<'a> {
pub root_id: Option<PipelineLayoutId>,
pub group_ids: &'a [Option<BindGroupLayoutId>],
}
impl ImplicitPipelineIds<'_> {
fn prepare<A: HalApi>(self, hub: &Hub<A>) -> ImplicitPipelineContext {
ImplicitPipelineContext {
root_id: hub.pipeline_layouts.prepare(self.root_id).into_id(),
group_ids: self
.group_ids
.iter()
.map(|id_in| hub.bind_group_layouts.prepare(*id_in).into_id())
.collect(),
}
}
}
|