script_webgpu/
gpucommandbuffer.rs

1/* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
4
5use std::marker::PhantomData;
6
7use dom_struct::dom_struct;
8use js::context::{JSContext, NoGC};
9use jstraceable_derive::JSTraceable;
10use log::warn;
11use malloc_size_of_derive::MallocSizeOf;
12use script_bindings::DomTypes;
13use script_bindings::cell::DomRefCell;
14use script_bindings::codegen::GenericBindings::WebGPUBinding::{
15    GPUCommandBufferMethods, GPUCommandBufferWrap,
16};
17use script_bindings::reflector::{Reflector, reflect_dom_object_with_wrap};
18use webgpu_traits::{WebGPU, WebGPUCommandBuffer, WebGPURequest};
19
20use crate::dom::bindings::root::DomRoot;
21use crate::dom::bindings::str::USVString;
22
23#[derive(JSTraceable, MallocSizeOf)]
24struct DroppableGPUCommandBuffer {
25    #[no_trace]
26    channel: WebGPU,
27    #[no_trace]
28    command_buffer: WebGPUCommandBuffer,
29}
30
31impl Drop for DroppableGPUCommandBuffer {
32    fn drop(&mut self) {
33        if let Err(e) = self
34            .channel
35            .0
36            .send(WebGPURequest::DropCommandBuffer(self.command_buffer.0))
37        {
38            warn!(
39                "Failed to send DropCommandBuffer({:?}) ({})",
40                self.command_buffer.0, e
41            );
42        }
43    }
44}
45
46#[dom_struct]
47pub struct GPUCommandBuffer<D: DomTypes> {
48    reflector_: Reflector,
49    label: DomRefCell<USVString>,
50    droppable: DroppableGPUCommandBuffer,
51    #[no_trace = "PhantomData does not exist"]
52    phantom: PhantomData<D>,
53}
54
55impl<D> GPUCommandBuffer<D>
56where
57    D: DomTypes<GPUCommandBuffer = GPUCommandBuffer<D>>,
58{
59    fn new_inherited(
60        channel: WebGPU,
61        command_buffer: WebGPUCommandBuffer,
62        label: USVString,
63    ) -> Self {
64        Self {
65            reflector_: Reflector::new(),
66            label: DomRefCell::new(label),
67            droppable: DroppableGPUCommandBuffer {
68                channel,
69                command_buffer,
70            },
71            phantom: PhantomData,
72        }
73    }
74
75    pub fn new(
76        cx: &mut JSContext,
77        global: &D::GlobalScope,
78        channel: WebGPU,
79        command_buffer: WebGPUCommandBuffer,
80        label: USVString,
81    ) -> DomRoot<Self> {
82        reflect_dom_object_with_wrap::<D, _, _>(
83            Box::new(GPUCommandBuffer::new_inherited(
84                channel,
85                command_buffer,
86                label,
87            )),
88            global,
89            cx,
90            GPUCommandBufferWrap::<D>,
91        )
92    }
93}
94
95impl<D: DomTypes> GPUCommandBuffer<D> {
96    pub fn id(&self) -> WebGPUCommandBuffer {
97        self.droppable.command_buffer
98    }
99}
100
101impl<D: DomTypes> GPUCommandBufferMethods<D> for GPUCommandBuffer<D> {
102    /// <https://gpuweb.github.io/gpuweb/#dom-gpuobjectbase-label>
103    fn Label(&self) -> USVString {
104        self.label.borrow().clone()
105    }
106
107    /// <https://gpuweb.github.io/gpuweb/#dom-gpuobjectbase-label>
108    fn SetLabel(&self, no_gc: &NoGC, value: USVString) {
109        *self.label.safe_borrow_mut(no_gc) = value;
110    }
111}
script_webgpu/gpucommandbuffer.rs

script_webgpu/
gpucommandbuffer.rs
