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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/common/privacy_budget/identifiability_metric_builder.h"
#include "third_party/blink/public/common/privacy_budget/identifiability_study_settings.h"
#include "third_party/blink/public/common/privacy_budget/identifiable_token_builder.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/execution_context/navigator_base.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/privacy_budget/identifiability_digest_helpers.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;
}
std::unique_ptr<WebGraphicsContext3DProvider> CreateContextProvider(
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;
}
return context_provider;
}
} // anonymous namespace
// static
const char GPU::kSupplementName[] = "GPU";
// static
GPU* GPU::gpu(NavigatorBase& navigator) {
GPU* gpu = Supplement<NavigatorBase>::From<GPU>(navigator);
if (!gpu) {
gpu = MakeGarbageCollected<GPU>(navigator);
ProvideTo(navigator, gpu);
}
return gpu;
}
GPU::GPU(NavigatorBase& navigator)
: Supplement<NavigatorBase>(navigator),
ExecutionContextLifecycleObserver(navigator.GetExecutionContext()) {}
GPU::~GPU() = default;
void GPU::Trace(Visitor* visitor) const {
ScriptWrappable::Trace(visitor);
Supplement<NavigatorBase>::Trace(visitor);
ExecutionContextLifecycleObserver::Trace(visitor);
}
void GPU::ContextDestroyed() {
if (!dawn_control_client_) {
return;
}
dawn_control_client_->Destroy();
}
void GPU::OnRequestAdapterCallback(ScriptState* script_state,
const GPURequestAdapterOptions* options,
ScriptPromiseResolver* resolver,
int32_t adapter_server_id,
const WGPUDeviceProperties& properties,
const char* error_message) {
GPUAdapter* adapter = nullptr;
if (adapter_server_id >= 0) {
adapter = MakeGarbageCollected<GPUAdapter>(
"Default", adapter_server_id, properties, dawn_control_client_);
}
if (error_message) {
ExecutionContext* execution_context = ExecutionContext::From(script_state);
auto* console_message = MakeGarbageCollected<ConsoleMessage>(
mojom::blink::ConsoleMessageSource::kRendering,
mojom::blink::ConsoleMessageLevel::kWarning, error_message);
execution_context->AddConsoleMessage(console_message);
}
RecordAdapterForIdentifiability(script_state, options, adapter);
resolver->Resolve(adapter);
}
void GPU::RecordAdapterForIdentifiability(
ScriptState* script_state,
const GPURequestAdapterOptions* options,
GPUAdapter* adapter) const {
constexpr IdentifiableSurface::Type type =
IdentifiableSurface::Type::kGPU_RequestAdapter;
if (!IdentifiabilityStudySettings::Get()->ShouldSample(type))
return;
ExecutionContext* context = GetExecutionContext();
if (!context)
return;
IdentifiableTokenBuilder input_builder;
if (options && options->hasPowerPreference()) {
input_builder.AddToken(
IdentifiabilityBenignStringToken(options->powerPreference()));
}
const auto surface =
IdentifiableSurface::FromTypeAndToken(type, input_builder.GetToken());
IdentifiableTokenBuilder output_builder;
if (adapter) {
output_builder.AddToken(IdentifiabilityBenignStringToken(adapter->name()));
for (const auto& feature : adapter->features()) {
output_builder.AddToken(IdentifiabilityBenignStringToken(feature));
}
}
IdentifiabilityMetricBuilder(context->UkmSourceID())
.Set(surface, output_builder.GetToken())
.Record(context->UkmRecorder());
}
ScriptPromise GPU::requestAdapter(ScriptState* script_state,
const GPURequestAdapterOptions* options) {
auto* resolver = MakeGarbageCollected<ScriptPromiseResolver>(script_state);
ScriptPromise promise = resolver->Promise();
if (!dawn_control_client_ || dawn_control_client_->IsContextLost()) {
ExecutionContext* execution_context = ExecutionContext::From(script_state);
// TODO(natlee@microsoft.com): if GPU process is lost, wait for the GPU
// process to come back instead of rejecting right away
std::unique_ptr<WebGraphicsContext3DProvider> context_provider =
CreateContextProvider(*execution_context);
if (!context_provider) {
// Failed to create context provider, won't be able to request adapter
// TODO(crbug.com/973017): Collect GPU info and surface context creation
// error.
resolver->Resolve(v8::Null(script_state->GetIsolate()));
return promise;
} else {
// Make a new DawnControlClientHolder with the context provider we just
// made and set the lost context callback
dawn_control_client_ = base::MakeRefCounted<DawnControlClientHolder>(
std::move(context_provider));
dawn_control_client_->SetLostContextCallback();
}
}
// For now we choose kHighPerformance by default.
gpu::webgpu::PowerPreference power_preference =
gpu::webgpu::PowerPreference::kHighPerformance;
if (options->hasPowerPreference() &&
options->powerPreference() == "low-power") {
power_preference = gpu::webgpu::PowerPreference::kLowPower;
}
dawn_control_client_->GetInterface()->RequestAdapterAsync(
power_preference,
WTF::Bind(&GPU::OnRequestAdapterCallback, WrapPersistent(this),
WrapPersistent(script_state), WrapPersistent(options),
WrapPersistent(resolver)));
return promise;
}
} // namespace blink
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