зеркало из https://github.com/mozilla/gecko-dev.git
85 строки
2.6 KiB
C++
85 строки
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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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 http://mozilla.org/MPL/2.0/. */
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#include "Instance.h"
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#include "Adapter.h"
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#include "gfxConfig.h"
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#include "nsIGlobalObject.h"
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#include "ipc/WebGPUChild.h"
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#include "ipc/WebGPUTypes.h"
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#include "mozilla/webgpu/ffi/wgpu.h"
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#include "mozilla/dom/Promise.h"
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#include "mozilla/layers/CompositorBridgeChild.h"
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namespace mozilla {
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namespace webgpu {
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GPU_IMPL_CYCLE_COLLECTION(Instance, mBridge, mOwner)
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/*static*/
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already_AddRefed<Instance> Instance::Create(nsIGlobalObject* aOwner) {
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RefPtr<WebGPUChild> bridge;
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if (gfx::gfxConfig::IsEnabled(gfx::Feature::WEBGPU)) {
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bridge = layers::CompositorBridgeChild::Get()->GetWebGPUChild();
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if (NS_WARN_IF(!bridge)) {
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MOZ_CRASH("Failed to create an IPDL bridge for WebGPU!");
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}
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}
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RefPtr<Instance> result = new Instance(aOwner, bridge);
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return result.forget();
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}
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Instance::Instance(nsIGlobalObject* aOwner, WebGPUChild* aBridge)
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: mBridge(aBridge), mOwner(aOwner) {}
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Instance::~Instance() { Cleanup(); }
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void Instance::Cleanup() {}
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JSObject* Instance::WrapObject(JSContext* cx,
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JS::Handle<JSObject*> givenProto) {
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return dom::GPU_Binding::Wrap(cx, this, givenProto);
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}
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already_AddRefed<dom::Promise> Instance::RequestAdapter(
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const dom::GPURequestAdapterOptions& aOptions, ErrorResult& aRv) {
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RefPtr<dom::Promise> promise = dom::Promise::Create(mOwner, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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if (!mBridge) {
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promise->MaybeRejectWithInvalidStateError("WebGPU is not enabled!");
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return promise.forget();
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}
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RefPtr<Instance> instance = this;
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mBridge->InstanceRequestAdapter(aOptions)->Then(
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GetMainThreadSerialEventTarget(), __func__,
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[promise, instance](ipc::ByteBuf aInfoBuf) {
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ffi::WGPUAdapterInformation info = {};
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ffi::wgpu_client_adapter_extract_info(ToFFI(&aInfoBuf), &info);
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MOZ_ASSERT(info.id != 0);
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RefPtr<Adapter> adapter = new Adapter(instance, info);
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promise->MaybeResolve(adapter);
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},
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[promise](const Maybe<ipc::ResponseRejectReason>& aRv) {
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if (aRv.isSome()) {
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promise->MaybeRejectWithAbortError("Internal communication error!");
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} else {
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promise->MaybeRejectWithInvalidStateError(
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"No matching adapter found!");
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}
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});
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return promise.forget();
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}
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} // namespace webgpu
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} // namespace mozilla
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