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;
22use crate::traits::Equivalence;
23
24#[derive(JSTraceable, MallocSizeOf)]
25struct DroppableGPUCommandBuffer {
26    #[no_trace]
27    channel: WebGPU,
28    #[no_trace]
29    command_buffer: WebGPUCommandBuffer,
30}
31
32impl Drop for DroppableGPUCommandBuffer {
33    fn drop(&mut self) {
34        if let Err(e) = self
35            .channel
36            .0
37            .send(WebGPURequest::DropCommandBuffer(self.command_buffer.0))
38        {
39            warn!(
40                "Failed to send DropCommandBuffer({:?}) ({})",
41                self.command_buffer.0, e
42            );
43        }
44    }
45}
46
47#[dom_struct]
48pub struct GPUCommandBuffer<D: DomTypes> {
49    reflector_: Reflector,
50    label: DomRefCell<USVString>,
51    droppable: DroppableGPUCommandBuffer,
52    #[no_trace = "PhantomData does not exist"]
53    phantom: PhantomData<D>,
54}
55
56impl<D: Equivalence> GPUCommandBuffer<D> {
57    fn new_inherited(
58        channel: WebGPU,
59        command_buffer: WebGPUCommandBuffer,
60        label: USVString,
61    ) -> Self {
62        Self {
63            reflector_: Reflector::new(),
64            label: DomRefCell::new(label),
65            droppable: DroppableGPUCommandBuffer {
66                channel,
67                command_buffer,
68            },
69            phantom: PhantomData,
70        }
71    }
72
73    pub fn new(
74        cx: &mut JSContext,
75        global: &D::GlobalScope,
76        channel: WebGPU,
77        command_buffer: WebGPUCommandBuffer,
78        label: USVString,
79    ) -> DomRoot<Self> {
80        reflect_dom_object_with_wrap::<D, _, _>(
81            Box::new(GPUCommandBuffer::new_inherited(
82                channel,
83                command_buffer,
84                label,
85            )),
86            global,
87            cx,
88            GPUCommandBufferWrap::<D>,
89        )
90    }
91}
92
93impl<D: DomTypes> GPUCommandBuffer<D> {
94    pub fn id(&self) -> WebGPUCommandBuffer {
95        self.droppable.command_buffer
96    }
97}
98
99impl<D: DomTypes> GPUCommandBufferMethods<D> for GPUCommandBuffer<D> {
100    /// <https://gpuweb.github.io/gpuweb/#dom-gpuobjectbase-label>
101    fn Label(&self) -> USVString {
102        self.label.borrow().clone()
103    }
104
105    /// <https://gpuweb.github.io/gpuweb/#dom-gpuobjectbase-label>
106    fn SetLabel(&self, no_gc: &NoGC, value: USVString) {
107        *self.label.safe_borrow_mut(no_gc) = value;
108    }
109}
script_webgpu/gpucommandbuffer.rs

script_webgpu/
gpucommandbuffer.rs
