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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/webgpu/gpu.h"
#include <utility>
#include "gpu/command_buffer/client/webgpu_interface.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/public/platform/web_graphics_context_3d_provider.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_gpu_request_adapter_options.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/inspector/console_message.h"
#include "third_party/blink/renderer/modules/webgpu/gpu_adapter.h"
#include "third_party/blink/renderer/platform/graphics/gpu/dawn_control_client_holder.h"
#include "third_party/blink/renderer/platform/heap/heap.h"
#include "third_party/blink/renderer/platform/scheduler/public/post_cross_thread_task.h"
#include "third_party/blink/renderer/platform/scheduler/public/thread.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_functional.h"
namespace blink {
namespace {
void CreateContextProvider(
const KURL& url,
base::WaitableEvent* waitable_event,
std::unique_ptr<WebGraphicsContext3DProvider>* created_context_provider) {
DCHECK(IsMainThread());
*created_context_provider =
Platform::Current()->CreateWebGPUGraphicsContext3DProvider(url);
waitable_event->Signal();
}
std::unique_ptr<WebGraphicsContext3DProvider> CreateContextProviderOnMainThread(
const KURL& url) {
scoped_refptr<base::SingleThreadTaskRunner> task_runner =
Thread::MainThread()->GetTaskRunner();
base::WaitableEvent waitable_event;
std::unique_ptr<WebGraphicsContext3DProvider> created_context_provider;
PostCrossThreadTask(
*task_runner, FROM_HERE,
CrossThreadBindOnce(&CreateContextProvider, url,
CrossThreadUnretained(&waitable_event),
CrossThreadUnretained(&created_context_provider)));
waitable_event.Wait();
return created_context_provider;
}
} // anonymous namespace
// static
GPU* GPU::Create(ExecutionContext& execution_context) {
const KURL& url = execution_context.Url();
std::unique_ptr<WebGraphicsContext3DProvider> context_provider;
if (IsMainThread()) {
context_provider =
Platform::Current()->CreateWebGPUGraphicsContext3DProvider(url);
} else {
context_provider = CreateContextProviderOnMainThread(url);
}
// TODO(kainino): we will need a better way of accessing the GPU interface
// from multiple threads than BindToCurrentThread et al.
if (context_provider && !context_provider->BindToCurrentThread()) {
// TODO(crbug.com/973017): Collect GPU info and surface context creation
// error.
return nullptr;
}
if (!context_provider) {
// TODO(crbug.com/973017): Collect GPU info and surface context creation
// error.
return nullptr;
}
return MakeGarbageCollected<GPU>(execution_context,
std::move(context_provider));
}
GPU::GPU(ExecutionContext& execution_context,
std::unique_ptr<WebGraphicsContext3DProvider> context_provider)
: ExecutionContextLifecycleObserver(&execution_context),
dawn_control_client_(base::MakeRefCounted<DawnControlClientHolder>(
std::move(context_provider))) {}
GPU::~GPU() = default;
void GPU::Trace(Visitor* visitor) const {
ScriptWrappable::Trace(visitor);
ExecutionContextLifecycleObserver::Trace(visitor);
}
void GPU::ContextDestroyed() {
dawn_control_client_->Destroy();
}
void GPU::OnRequestAdapterCallback(ScriptPromiseResolver* resolver,
uint32_t adapter_server_id,
const WGPUDeviceProperties& properties) {
auto* adapter = MakeGarbageCollected<GPUAdapter>(
"Default", adapter_server_id, properties, dawn_control_client_);
resolver->Resolve(adapter);
}
ScriptPromise GPU::requestAdapter(ScriptState* script_state,
const GPURequestAdapterOptions* options) {
auto* resolver = MakeGarbageCollected<ScriptPromiseResolver>(script_state);
ScriptPromise promise = resolver->Promise();
// For now we choose kHighPerformance by default.
gpu::webgpu::PowerPreference power_preference =
gpu::webgpu::PowerPreference::kHighPerformance;
if (options->powerPreference() == "low-power") {
power_preference = gpu::webgpu::PowerPreference::kLowPower;
}
if (!dawn_control_client_->GetInterface()->RequestAdapterAsync(
power_preference,
WTF::Bind(&GPU::OnRequestAdapterCallback, WrapPersistent(this),
WrapPersistent(resolver)))) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kOperationError, "Fail to request GPUAdapter"));
}
return promise;
}
} // namespace blink
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