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webgpu: Sync GPUBuffer (#33154)
* More helpers on `Promise` Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com> * Sync `GPUBuffer` Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com> * Set some good expectations Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com> * Some bad expect also on firefox Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com> * Extract DataBlock, DataView impl from GPUBuffer Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com> * Fix size check to work on 32bit platforms Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com> --------- Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
This commit is contained in:
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parent
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commit
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12 changed files with 690 additions and 1163 deletions
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@ -2,19 +2,20 @@
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use std::cell::Cell;
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use std::ops::Range;
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use std::rc::Rc;
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use std::string::String;
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use std::sync::{Arc, Mutex};
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use dom_struct::dom_struct;
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use ipc_channel::ipc::IpcSharedMemory;
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use js::typedarray::{ArrayBuffer, ArrayBufferU8};
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use js::typedarray::ArrayBuffer;
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use webgpu::wgc::device::HostMap;
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use webgpu::{WebGPU, WebGPUBuffer, WebGPURequest, WebGPUResponse};
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use webgpu::{wgt, Mapping, WebGPU, WebGPUBuffer, WebGPURequest, WebGPUResponse};
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use super::bindings::buffer_source::{create_new_external_array_buffer, HeapBufferSource};
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use super::bindings::buffer_source::DataBlock;
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use super::bindings::codegen::Bindings::WebGPUBinding::{
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GPUBufferMapState, GPUFlagsConstant, GPUMapModeFlags,
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};
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use crate::dom::bindings::cell::DomRefCell;
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use crate::dom::bindings::codegen::Bindings::WebGPUBinding::{
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GPUBufferMethods, GPUMapModeConstants, GPUSize64,
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@ -30,31 +31,36 @@ use crate::dom::promise::Promise;
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use crate::realms::InRealm;
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use crate::script_runtime::JSContext;
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const RANGE_OFFSET_ALIGN_MASK: u64 = 8;
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const RANGE_SIZE_ALIGN_MASK: u64 = 4;
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// https://gpuweb.github.io/gpuweb/#buffer-state
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#[derive(Clone, Copy, MallocSizeOf, PartialEq)]
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pub enum GPUBufferState {
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Mapped,
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MappedAtCreation,
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MappingPending,
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Unmapped,
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Destroyed,
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#[derive(JSTraceable, MallocSizeOf)]
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pub struct ActiveBufferMapping {
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// TODO(sagudev): Use IpcSharedMemory when https://github.com/servo/ipc-channel/pull/356 lands
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/// <https://gpuweb.github.io/gpuweb/#active-buffer-mapping-data>
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/// <https://gpuweb.github.io/gpuweb/#active-buffer-mapping-views>
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pub data: DataBlock,
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/// <https://gpuweb.github.io/gpuweb/#active-buffer-mapping-mode>
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mode: GPUMapModeFlags,
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/// <https://gpuweb.github.io/gpuweb/#active-buffer-mapping-range>
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range: Range<u64>,
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}
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#[derive(JSTraceable, MallocSizeOf)]
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pub struct GPUBufferMapInfo {
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#[ignore_malloc_size_of = "Arc"]
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#[no_trace]
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/// The `mapping` is wrapped in an `Arc` to ensure thread safety.
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/// This is necessary for integration with the SpiderMonkey engine,
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pub mapping: Arc<Mutex<Vec<u8>>>,
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pub mapping_range: Range<u64>,
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pub mapped_ranges: Vec<Range<u64>>,
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#[ignore_malloc_size_of = "defined in mozjs"]
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pub js_buffers: Vec<HeapBufferSource<ArrayBufferU8>>,
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pub map_mode: Option<u32>,
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impl ActiveBufferMapping {
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/// <https://gpuweb.github.io/gpuweb/#abstract-opdef-initialize-an-active-buffer-mapping>
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pub fn new(mode: GPUMapModeFlags, range: Range<u64>) -> Fallible<Self> {
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// Step 1
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let size = range.end - range.start;
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// Step 2
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if size > (1 << 53) - 1 {
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return Err(Error::Range("Over MAX_SAFE_INTEGER".to_string()));
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}
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let size: usize = size
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.try_into()
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.map_err(|_| Error::Range("Over usize".to_string()))?;
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Ok(Self {
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data: DataBlock::new_zeroed(size),
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mode,
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range,
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})
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}
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}
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#[dom_struct]
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@ -64,14 +70,18 @@ pub struct GPUBuffer {
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#[no_trace]
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channel: WebGPU,
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label: DomRefCell<USVString>,
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state: Cell<GPUBufferState>,
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#[no_trace]
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buffer: WebGPUBuffer,
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device: Dom<GPUDevice>,
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/// <https://gpuweb.github.io/gpuweb/#dom-gpubuffer-size>
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size: GPUSize64,
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/// <https://gpuweb.github.io/gpuweb/#dom-gpubuffer-usage>
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usage: GPUFlagsConstant,
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/// <https://gpuweb.github.io/gpuweb/#dom-gpubuffer-pending_map-slot>
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#[ignore_malloc_size_of = "promises are hard"]
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map_promise: DomRefCell<Option<Rc<Promise>>>,
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map_info: DomRefCell<Option<GPUBufferMapInfo>>,
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pending_map: DomRefCell<Option<Rc<Promise>>>,
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/// <https://gpuweb.github.io/gpuweb/#dom-gpubuffer-mapping-slot>
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mapping: DomRefCell<Option<ActiveBufferMapping>>,
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}
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impl GPUBuffer {
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@ -79,38 +89,37 @@ impl GPUBuffer {
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channel: WebGPU,
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buffer: WebGPUBuffer,
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device: &GPUDevice,
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state: GPUBufferState,
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size: GPUSize64,
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map_info: DomRefCell<Option<GPUBufferMapInfo>>,
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usage: GPUFlagsConstant,
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mapping: Option<ActiveBufferMapping>,
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label: USVString,
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) -> Self {
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Self {
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reflector_: Reflector::new(),
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channel,
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label: DomRefCell::new(label),
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state: Cell::new(state),
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device: Dom::from_ref(device),
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buffer,
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map_promise: DomRefCell::new(None),
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pending_map: DomRefCell::new(None),
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size,
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map_info,
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usage,
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mapping: DomRefCell::new(mapping),
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}
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}
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#[allow(clippy::too_many_arguments)]
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pub fn new(
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global: &GlobalScope,
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channel: WebGPU,
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buffer: WebGPUBuffer,
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device: &GPUDevice,
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state: GPUBufferState,
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size: GPUSize64,
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map_info: DomRefCell<Option<GPUBufferMapInfo>>,
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usage: GPUFlagsConstant,
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mapping: Option<ActiveBufferMapping>,
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label: USVString,
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) -> DomRoot<Self> {
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reflect_dom_object(
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Box::new(GPUBuffer::new_inherited(
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channel, buffer, device, state, size, map_info, label,
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channel, buffer, device, size, usage, mapping, label,
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)),
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global,
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)
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@ -121,86 +130,49 @@ impl GPUBuffer {
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pub fn id(&self) -> WebGPUBuffer {
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self.buffer
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}
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pub fn state(&self) -> GPUBufferState {
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self.state.get()
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}
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}
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impl Drop for GPUBuffer {
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fn drop(&mut self) {
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if matches!(self.state(), GPUBufferState::Destroyed) {
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return;
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}
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if let Err(e) = self
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.channel
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.0
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.send(WebGPURequest::DropBuffer(self.buffer.0))
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{
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warn!(
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"Failed to send WebGPURequest::DropBuffer({:?}) ({})",
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self.buffer.0, e
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);
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};
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self.Destroy()
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}
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}
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impl GPUBufferMethods for GPUBuffer {
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#[allow(unsafe_code)]
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/// <https://gpuweb.github.io/gpuweb/#dom-gpubuffer-unmap>
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fn Unmap(&self) -> Fallible<()> {
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let cx = GlobalScope::get_cx();
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fn Unmap(&self) {
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// Step 1
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match self.state.get() {
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GPUBufferState::Unmapped | GPUBufferState::Destroyed => {
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// TODO: Record validation error on the current scope
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return Ok(());
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},
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// Step 3
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GPUBufferState::Mapped | GPUBufferState::MappedAtCreation => {
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let mut info = self.map_info.borrow_mut();
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let m_info = if let Some(m_info) = info.as_mut() {
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m_info
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} else {
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return Err(Error::Operation);
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};
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let m_range = m_info.mapping_range.clone();
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if let Err(e) = self.channel.0.send(WebGPURequest::UnmapBuffer {
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buffer_id: self.id().0,
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device_id: self.device.id().0,
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array_buffer: IpcSharedMemory::from_bytes(&m_info.mapping.lock().unwrap()),
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is_map_read: m_info.map_mode == Some(GPUMapModeConstants::READ),
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offset: m_range.start,
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size: m_range.end - m_range.start,
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}) {
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warn!("Failed to send Buffer unmap ({:?}) ({})", self.buffer.0, e);
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}
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// Step 3.3
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m_info.js_buffers.drain(..).for_each(|obj| {
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obj.detach_buffer(cx);
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});
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},
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// Step 2
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GPUBufferState::MappingPending => {
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let promise = self.map_promise.borrow_mut().take().unwrap();
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promise.reject_error(Error::Operation);
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},
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if let Some(promise) = self.pending_map.borrow_mut().take() {
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promise.reject_error(Error::Abort);
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}
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// Step 2
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let mut mapping = self.mapping.borrow_mut().take();
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let mapping = if let Some(mapping) = mapping.as_mut() {
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mapping
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} else {
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return;
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};
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// Step 4
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self.state.set(GPUBufferState::Unmapped);
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*self.map_info.borrow_mut() = None;
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Ok(())
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// Step 3
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mapping.data.clear_views();
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// Step 5&7
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if let Err(e) = self.channel.0.send(WebGPURequest::UnmapBuffer {
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buffer_id: self.id().0,
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array_buffer: IpcSharedMemory::from_bytes(mapping.data.data()),
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write_back: mapping.mode >= GPUMapModeConstants::WRITE,
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offset: mapping.range.start,
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size: mapping.range.end - mapping.range.start,
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}) {
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warn!("Failed to send Buffer unmap ({:?}) ({})", self.buffer.0, e);
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}
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}
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/// <https://gpuweb.github.io/gpuweb/#dom-gpubuffer-destroy>
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fn Destroy(&self) -> Fallible<()> {
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let state = self.state.get();
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match state {
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GPUBufferState::Mapped | GPUBufferState::MappedAtCreation => {
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self.Unmap()?;
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},
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GPUBufferState::Destroyed => return Ok(()),
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_ => {},
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};
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/// https://gpuweb.github.io/gpuweb/#dom-gpubuffer-destroy
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fn Destroy(&self) {
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// Step 1
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self.Unmap();
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// Step 2
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if let Err(e) = self
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.channel
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.0
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@ -211,11 +183,9 @@ impl GPUBufferMethods for GPUBuffer {
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self.buffer.0, e
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);
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};
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self.state.set(GPUBufferState::Destroyed);
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Ok(())
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}
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/// <https://gpuweb.github.io/gpuweb/#dom-gpubuffer-mapasync-offset-size>
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/// <https://gpuweb.github.io/gpuweb/#dom-gpubuffer-mapasync>
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fn MapAsync(
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&self,
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mode: u32,
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@ -224,22 +194,16 @@ impl GPUBufferMethods for GPUBuffer {
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comp: InRealm,
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) -> Rc<Promise> {
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let promise = Promise::new_in_current_realm(comp);
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let range_size = if let Some(s) = size {
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s
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} else if offset >= self.size {
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// Step 2
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if self.pending_map.borrow().is_some() {
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promise.reject_error(Error::Operation);
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return promise;
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} else {
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self.size - offset
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};
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if self.state.get() != GPUBufferState::Unmapped {
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self.device
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.dispatch_error(webgpu::Error::Validation(String::from(
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"Buffer is not Unmapped",
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)));
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promise.reject_error(Error::Abort);
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return promise;
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}
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// Step 4
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*self.pending_map.borrow_mut() = Some(promise.clone());
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// Step 5
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// This should be bitflags in wgpu-core
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let host_map = match mode {
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GPUMapModeConstants::READ => HostMap::Read,
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GPUMapModeConstants::WRITE => HostMap::Write,
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@ -248,13 +212,11 @@ impl GPUBufferMethods for GPUBuffer {
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.dispatch_error(webgpu::Error::Validation(String::from(
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"Invalid MapModeFlags",
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)));
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promise.reject_error(Error::Abort);
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self.map_failure(&promise);
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return promise;
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},
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};
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let map_range = offset..offset + range_size;
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let sender = response_async(&promise, self);
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if let Err(e) = self.channel.0.send(WebGPURequest::BufferMapAsync {
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sender,
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@ -262,80 +224,53 @@ impl GPUBufferMethods for GPUBuffer {
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device_id: self.device.id().0,
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host_map,
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offset,
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size: Some(range_size),
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size,
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}) {
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warn!(
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"Failed to send BufferMapAsync ({:?}) ({})",
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self.buffer.0, e
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);
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promise.reject_error(Error::Operation);
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self.map_failure(&promise);
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return promise;
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}
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self.state.set(GPUBufferState::MappingPending);
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*self.map_info.borrow_mut() = Some(GPUBufferMapInfo {
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mapping: Arc::new(Mutex::new(Vec::with_capacity(0))),
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mapping_range: map_range,
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mapped_ranges: Vec::new(),
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js_buffers: Vec::new(),
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map_mode: Some(mode),
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});
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*self.map_promise.borrow_mut() = Some(promise.clone());
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// Step 6
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promise
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}
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/// <https://gpuweb.github.io/gpuweb/#dom-gpubuffer-getmappedrange>
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#[allow(unsafe_code)]
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fn GetMappedRange(
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&self,
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cx: JSContext,
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_cx: JSContext,
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offset: GPUSize64,
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size: Option<GPUSize64>,
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) -> Fallible<ArrayBuffer> {
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let range_size = if let Some(s) = size {
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s
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} else if offset >= self.size {
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return Err(Error::Operation);
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} else {
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self.size - offset
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self.size.checked_sub(offset).unwrap_or(0)
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};
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let m_end = offset + range_size;
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let mut info = self.map_info.borrow_mut();
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let m_info = if let Some(m_info) = info.as_mut() {
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m_info
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} else {
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return Err(Error::Operation);
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};
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let mut valid = matches!(
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self.state.get(),
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GPUBufferState::Mapped | GPUBufferState::MappedAtCreation
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);
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// Step 2: validation
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let mut mapping = self.mapping.borrow_mut();
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let mapping = mapping.as_mut().ok_or(Error::Operation)?;
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valid &= offset % RANGE_OFFSET_ALIGN_MASK == 0 &&
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range_size % RANGE_SIZE_ALIGN_MASK == 0 &&
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offset >= m_info.mapping_range.start &&
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m_end <= m_info.mapping_range.end;
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valid &= m_info
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.mapped_ranges
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.iter()
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.all(|range| range.start >= m_end || range.end <= offset);
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let valid = offset % wgt::MAP_ALIGNMENT == 0 &&
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range_size % wgt::COPY_BUFFER_ALIGNMENT == 0 &&
|
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offset >= mapping.range.start &&
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offset + range_size <= mapping.range.end;
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if !valid {
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return Err(Error::Operation);
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}
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|
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let heap_typed_array = create_new_external_array_buffer::<ArrayBufferU8>(
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cx,
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Arc::clone(&m_info.mapping),
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offset as usize,
|
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range_size as usize,
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m_end as usize,
|
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);
|
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|
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let result = heap_typed_array.get_buffer().map_err(|_| Error::JSFailed);
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|
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m_info.mapped_ranges.push(offset..m_end);
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m_info.js_buffers.push(heap_typed_array);
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|
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result
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// Step 4
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// only mapping.range is mapped with mapping.range.start at 0
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// so we need to rebase range to mapped.range
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let rebased_offset = (offset - mapping.range.start) as usize;
|
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mapping
|
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.data
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.view(rebased_offset..rebased_offset + range_size as usize)
|
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.map(|view| view.array_buffer())
|
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.map_err(|()| Error::Operation)
|
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}
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|
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/// <https://gpuweb.github.io/gpuweb/#dom-gpuobjectbase-label>
|
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|
|
@ -347,30 +282,96 @@ impl GPUBufferMethods for GPUBuffer {
|
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fn SetLabel(&self, value: USVString) {
|
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*self.label.borrow_mut() = value;
|
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}
|
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|
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/// <https://gpuweb.github.io/gpuweb/#dom-gpubuffer-size>
|
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fn Size(&self) -> GPUSize64 {
|
||||
self.size
|
||||
}
|
||||
|
||||
/// <https://gpuweb.github.io/gpuweb/#dom-gpubuffer-usage>
|
||||
fn Usage(&self) -> GPUFlagsConstant {
|
||||
self.usage
|
||||
}
|
||||
|
||||
/// <https://gpuweb.github.io/gpuweb/#dom-gpubuffer-mapstate>
|
||||
fn MapState(&self) -> GPUBufferMapState {
|
||||
// Step 1&2&3
|
||||
if self.mapping.borrow().is_some() {
|
||||
GPUBufferMapState::Mapped
|
||||
} else if self.pending_map.borrow().is_some() {
|
||||
GPUBufferMapState::Pending
|
||||
} else {
|
||||
GPUBufferMapState::Unmapped
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl GPUBuffer {
|
||||
fn map_failure(&self, p: &Rc<Promise>) {
|
||||
let mut pending_map = self.pending_map.borrow_mut();
|
||||
// Step 1
|
||||
if pending_map.as_ref() != Some(p) {
|
||||
assert!(p.is_rejected());
|
||||
return;
|
||||
}
|
||||
// Step 2
|
||||
assert!(p.is_pending());
|
||||
// Step 3
|
||||
pending_map.take();
|
||||
// Step 4
|
||||
if self.device.is_lost() {
|
||||
p.reject_error(Error::Abort);
|
||||
} else {
|
||||
p.reject_error(Error::Operation);
|
||||
}
|
||||
}
|
||||
|
||||
fn map_success(&self, p: &Rc<Promise>, wgpu_mapping: Mapping) {
|
||||
let mut pending_map = self.pending_map.borrow_mut();
|
||||
|
||||
// Step 1
|
||||
if pending_map.as_ref() != Some(p) {
|
||||
assert!(p.is_rejected());
|
||||
return;
|
||||
}
|
||||
|
||||
// Step 2
|
||||
assert!(p.is_pending());
|
||||
|
||||
// Step 4
|
||||
let mapping = ActiveBufferMapping::new(
|
||||
match wgpu_mapping.mode {
|
||||
HostMap::Read => GPUMapModeConstants::READ,
|
||||
HostMap::Write => GPUMapModeConstants::WRITE,
|
||||
},
|
||||
wgpu_mapping.range,
|
||||
);
|
||||
|
||||
match mapping {
|
||||
Err(error) => {
|
||||
*pending_map = None;
|
||||
p.reject_error(error.clone());
|
||||
},
|
||||
Ok(mut mapping) => {
|
||||
// Step 5
|
||||
mapping.data.load(&wgpu_mapping.data);
|
||||
// Step 6
|
||||
self.mapping.borrow_mut().replace(mapping);
|
||||
// Step 7
|
||||
pending_map.take();
|
||||
p.resolve_native(&());
|
||||
},
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl AsyncWGPUListener for GPUBuffer {
|
||||
#[allow(unsafe_code)]
|
||||
fn handle_response(&self, response: WebGPUResponse, promise: &Rc<Promise>) {
|
||||
match response {
|
||||
WebGPUResponse::BufferMapAsync(Ok(bytes)) => {
|
||||
*self
|
||||
.map_info
|
||||
.borrow_mut()
|
||||
.as_mut()
|
||||
.unwrap()
|
||||
.mapping
|
||||
.lock()
|
||||
.unwrap()
|
||||
.as_mut() = bytes.to_vec();
|
||||
promise.resolve_native(&());
|
||||
self.state.set(GPUBufferState::Mapped);
|
||||
},
|
||||
WebGPUResponse::BufferMapAsync(Err(e)) => {
|
||||
warn!("Could not map buffer({:?})", e);
|
||||
promise.reject_error(Error::Abort);
|
||||
},
|
||||
_ => unreachable!("GPUBuffer received wrong WebGPUResponse"),
|
||||
WebGPUResponse::BufferMapAsync(Ok(mapping)) => self.map_success(promise, mapping),
|
||||
WebGPUResponse::BufferMapAsync(Err(_)) => self.map_failure(promise),
|
||||
_ => unreachable!("Wrong response received on AsyncWGPUListener for GPUBuffer"),
|
||||
}
|
||||
*self.map_promise.borrow_mut() = None;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue