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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/ipc/in_process_gpu_thread_holder.h"
#include "base/command_line.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/synchronization/waitable_event.h"
#include "build/build_config.h"
#include "gpu/command_buffer/service/scheduler.h"
#include "gpu/command_buffer/service/service_utils.h"
#include "gpu/command_buffer/service/shared_image/shared_image_manager.h"
#include "gpu/command_buffer/service/sync_point_manager.h"
#include "gpu/config/gpu_info_collector.h"
#include "gpu/config/gpu_util.h"
#include "ui/gl/gl_utils.h"
#include "ui/gl/init/gl_factory.h"
namespace gpu {
InProcessGpuThreadHolder::InProcessGpuThreadHolder()
: base::Thread("GpuThread") {
DCHECK(base::CommandLine::InitializedForCurrentProcess());
auto* command_line = base::CommandLine::ForCurrentProcess();
gpu_preferences_ = gles2::ParseGpuPreferences(command_line);
gpu::GPUInfo gpu_info;
gpu::CollectGraphicsInfoForTesting(&gpu_info);
gpu_feature_info_ = gpu::ComputeGpuFeatureInfo(gpu_info, gpu_preferences_,
command_line, nullptr);
Start();
}
InProcessGpuThreadHolder::~InProcessGpuThreadHolder() {
// Ensure members created on GPU thread are destroyed there too.
task_runner()->PostTask(
FROM_HERE, base::BindOnce(&InProcessGpuThreadHolder::DeleteOnGpuThread,
base::Unretained(this)));
Stop();
}
GpuPreferences* InProcessGpuThreadHolder::GetGpuPreferences() {
DCHECK(!task_executor_);
return &gpu_preferences_;
}
GpuFeatureInfo* InProcessGpuThreadHolder::GetGpuFeatureInfo() {
DCHECK(!task_executor_);
return &gpu_feature_info_;
}
CommandBufferTaskExecutor* InProcessGpuThreadHolder::GetTaskExecutor() {
if (!task_executor_) {
base::WaitableEvent completion;
task_runner()->PostTask(
FROM_HERE,
base::BindOnce(&InProcessGpuThreadHolder::InitializeOnGpuThread,
base::Unretained(this), &completion));
completion.Wait();
}
return task_executor_.get();
}
void InProcessGpuThreadHolder::InitializeOnGpuThread(
base::WaitableEvent* completion) {
sync_point_manager_ = std::make_unique<SyncPointManager>();
scheduler_ = std::make_unique<Scheduler>(sync_point_manager_.get());
shared_image_manager_ = std::make_unique<SharedImageManager>();
bool use_passthrough_cmd_decoder =
gpu_preferences_.use_passthrough_cmd_decoder;
share_group_ = new gl::GLShareGroup();
surface_ =
gl::init::CreateOffscreenGLSurface(gl::GetDefaultDisplay(), gfx::Size());
gl::GLContextAttribs attribs =
gles2::GenerateGLContextAttribsForCompositor(use_passthrough_cmd_decoder);
context_ =
gl::init::CreateGLContext(share_group_.get(), surface_.get(), attribs);
CHECK(context_->MakeCurrent(surface_.get()));
GpuDriverBugWorkarounds gpu_driver_bug_workarounds(
gpu_feature_info_.enabled_gpu_driver_bug_workarounds);
bool use_virtualized_gl_context = false;
#if BUILDFLAG(IS_MAC)
// Virtualize GpuPreference:::kLowPower contexts by default on OS X to prevent
// performance regressions when enabling FCM. https://crbug.com/180463
use_virtualized_gl_context = true;
#endif
use_virtualized_gl_context |=
gpu_driver_bug_workarounds.use_virtualized_gl_contexts;
if (use_passthrough_cmd_decoder) {
// Virtualized contexts don't work with passthrough command decoder.
// See https://crbug.com/914976
use_virtualized_gl_context = false;
}
if (use_virtualized_gl_context)
share_group_->SetSharedContext(context_.get());
context_state_ = base::MakeRefCounted<SharedContextState>(
share_group_, surface_, context_, use_virtualized_gl_context,
base::DoNothing(), gpu_preferences_.gr_context_type);
auto feature_info = base::MakeRefCounted<gles2::FeatureInfo>(
gpu_driver_bug_workarounds, gpu_feature_info_);
context_state_->InitializeGL(gpu_preferences_, feature_info);
context_state_->InitializeSkia(gpu_preferences_, gpu_driver_bug_workarounds);
task_executor_ = std::make_unique<GpuInProcessThreadService>(
this, task_runner(), scheduler_.get(), sync_point_manager_.get(),
gl::GLSurfaceFormat(), gpu_feature_info_, gpu_preferences_,
shared_image_manager_.get(), nullptr);
completion->Signal();
}
void InProcessGpuThreadHolder::DeleteOnGpuThread() {
task_executor_.reset();
scheduler_.reset();
sync_point_manager_.reset();
shared_image_manager_.reset();
context_state_.reset();
context_.reset();
surface_.reset();
share_group_.reset();
}
scoped_refptr<SharedContextState>
InProcessGpuThreadHolder::GetSharedContextState() {
DCHECK(context_state_);
return context_state_;
}
scoped_refptr<gl::GLShareGroup> InProcessGpuThreadHolder::GetShareGroup() {
if (!share_group_)
share_group_ = base::MakeRefCounted<gl::GLShareGroup>();
return share_group_;
}
} // namespace gpu
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