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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use crate::dom::bindings::codegen::Bindings::GPUAdapterBinding::{
GPUAdapterMethods, GPUDeviceDescriptor,
};
use crate::dom::bindings::error::Error;
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
use crate::dom::bindings::root::DomRoot;
use crate::dom::bindings::str::DOMString;
use crate::dom::globalscope::GlobalScope;
use crate::dom::gpu::response_async;
use crate::dom::gpu::AsyncWGPUListener;
use crate::dom::gpudevice::GPUDevice;
use crate::dom::promise::Promise;
use crate::realms::InRealm;
use crate::script_runtime::JSContext as SafeJSContext;
use dom_struct::dom_struct;
use js::jsapi::{Heap, JSObject};
use std::ptr::NonNull;
use std::rc::Rc;
use webgpu::{wgt, WebGPU, WebGPUAdapter, WebGPURequest, WebGPUResponse, WebGPUResponseResult};
#[dom_struct]
pub struct GPUAdapter {
reflector_: Reflector,
#[ignore_malloc_size_of = "channels are hard"]
channel: WebGPU,
name: DOMString,
#[ignore_malloc_size_of = "mozjs"]
extensions: Heap<*mut JSObject>,
adapter: WebGPUAdapter,
}
impl GPUAdapter {
fn new_inherited(
channel: WebGPU,
name: DOMString,
extensions: Heap<*mut JSObject>,
adapter: WebGPUAdapter,
) -> Self {
Self {
reflector_: Reflector::new(),
channel,
name,
extensions,
adapter,
}
}
pub fn new(
global: &GlobalScope,
channel: WebGPU,
name: DOMString,
extensions: Heap<*mut JSObject>,
adapter: WebGPUAdapter,
) -> DomRoot<Self> {
reflect_dom_object(
Box::new(GPUAdapter::new_inherited(
channel, name, extensions, adapter,
)),
global,
)
}
}
impl GPUAdapterMethods for GPUAdapter {
// https://gpuweb.github.io/gpuweb/#dom-gpuadapter-name
fn Name(&self) -> DOMString {
self.name.clone()
}
// https://gpuweb.github.io/gpuweb/#dom-gpuadapter-extensions
fn Extensions(&self, _cx: SafeJSContext) -> NonNull<JSObject> {
NonNull::new(self.extensions.get()).unwrap()
}
/// https://gpuweb.github.io/gpuweb/#dom-gpuadapter-requestdevice
fn RequestDevice(&self, descriptor: &GPUDeviceDescriptor, comp: InRealm) -> Rc<Promise> {
let promise = Promise::new_in_current_realm(&self.global(), comp);
let sender = response_async(&promise, self);
let desc = wgt::DeviceDescriptor {
features: wgt::Features::empty(),
limits: wgt::Limits {
max_bind_groups: descriptor.limits.maxBindGroups,
..Default::default()
},
shader_validation: true,
};
let id = self
.global()
.wgpu_id_hub()
.lock()
.create_device_id(self.adapter.0.backend());
let pipeline_id = self.global().pipeline_id();
if self
.channel
.0
.send((
None,
WebGPURequest::RequestDevice {
sender,
adapter_id: self.adapter,
descriptor: desc,
device_id: id,
pipeline_id,
label: descriptor.parent.label.as_ref().map(|s| s.to_string()),
},
))
.is_err()
{
promise.reject_error(Error::Operation);
}
promise
}
}
impl AsyncWGPUListener for GPUAdapter {
fn handle_response(&self, response: WebGPUResponseResult, promise: &Rc<Promise>) {
match response {
Ok(WebGPUResponse::RequestDevice {
device_id,
queue_id,
_descriptor,
label,
}) => {
let device = GPUDevice::new(
&self.global(),
self.channel.clone(),
&self,
Heap::default(),
Heap::default(),
device_id,
queue_id,
label,
);
self.global().add_gpu_device(&device);
promise.resolve_native(&device);
},
Err(e) => {
warn!("Could not get GPUDevice({:?})", e);
promise.reject_error(Error::Operation);
},
_ => {
warn!("GPUAdapter received wrong WebGPUResponse");
promise.reject_error(Error::Operation);
},
}
}
}
|
