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in_process_command_buffer.cc
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// Copyright 2013 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 "gpu/ipc/in_process_command_buffer.h"
#include <stddef.h>
#include <stdint.h>
#include <set>
#include <utility>
#include "base/atomic_sequence_num.h"
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/command_line.h"
#include "base/containers/queue.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/numerics/safe_conversions.h"
#include "base/sequence_checker.h"
#include "base/task/single_thread_task_runner.h"
#include "base/threading/thread.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/time/time.h"
#include "base/trace_event/memory_dump_manager.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "cc/base/completion_event.h"
#include "components/viz/common/features.h"
#include "gpu/command_buffer/client/gpu_control_client.h"
#include "gpu/command_buffer/client/gpu_memory_buffer_manager.h"
#include "gpu/command_buffer/client/shared_image_interface.h"
#include "gpu/command_buffer/common/gpu_memory_buffer_support.h"
#include "gpu/command_buffer/common/presentation_feedback_utils.h"
#include "gpu/command_buffer/common/swap_buffers_complete_params.h"
#include "gpu/command_buffer/common/swap_buffers_flags.h"
#include "gpu/command_buffer/common/sync_token.h"
#include "gpu/command_buffer/service/command_buffer_service.h"
#include "gpu/command_buffer/service/context_group.h"
#include "gpu/command_buffer/service/gl_context_virtual.h"
#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
#include "gpu/command_buffer/service/gpu_command_buffer_memory_tracker.h"
#include "gpu/command_buffer/service/gpu_fence_manager.h"
#include "gpu/command_buffer/service/gpu_tracer.h"
#include "gpu/command_buffer/service/gr_shader_cache.h"
#include "gpu/command_buffer/service/image_factory.h"
#include "gpu/command_buffer/service/mailbox_manager_factory.h"
#include "gpu/command_buffer/service/memory_program_cache.h"
#include "gpu/command_buffer/service/memory_tracking.h"
#include "gpu/command_buffer/service/query_manager.h"
#include "gpu/command_buffer/service/raster_decoder.h"
#include "gpu/command_buffer/service/scheduler.h"
#include "gpu/command_buffer/service/service_utils.h"
#include "gpu/command_buffer/service/shared_context_state.h"
#include "gpu/command_buffer/service/sync_point_manager.h"
#include "gpu/command_buffer/service/webgpu_decoder.h"
#include "gpu/config/gpu_crash_keys.h"
#include "gpu/config/gpu_feature_info.h"
#include "gpu/config/gpu_preferences.h"
#include "gpu/config/gpu_switches.h"
#include "gpu/ipc/command_buffer_task_executor.h"
#include "gpu/ipc/common/gpu_client_ids.h"
#include "gpu/ipc/host/gpu_memory_buffer_support.h"
#include "gpu/ipc/service/gpu_channel_manager_delegate.h"
#include "gpu/ipc/service/image_transport_surface.h"
#include "gpu/ipc/shared_image_interface_in_process.h"
#include "gpu/ipc/single_task_sequence.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/gpu_fence.h"
#include "ui/gfx/gpu_fence_handle.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_context.h"
#include "ui/gl/gl_image.h"
#include "ui/gl/gl_image_shared_memory.h"
#include "ui/gl/gl_share_group.h"
#include "ui/gl/gl_version_info.h"
#include "ui/gl/init/create_gr_gl_interface.h"
#include "ui/gl/init/gl_factory.h"
#if defined(OS_WIN)
#include <windows.h>
#include "base/process/process_handle.h"
#endif
#if defined(USE_OZONE)
#include "ui/ozone/public/ozone_platform.h"
#include "ui/ozone/public/platform_window_surface.h"
#include "ui/ozone/public/surface_factory_ozone.h"
#endif
namespace gpu {
namespace {
base::AtomicSequenceNumber g_next_image_id;
template <typename T>
base::OnceClosure WrapTaskWithResult(base::OnceCallback<T(void)> task,
T* result,
base::WaitableEvent* completion) {
auto wrapper = [](base::OnceCallback<T(void)> task, T* result,
base::WaitableEvent* completion) {
*result = std::move(task).Run();
completion->Signal();
};
return base::BindOnce(wrapper, std::move(task), result, completion);
}
class ScopedEvent {
public:
explicit ScopedEvent(base::WaitableEvent* event) : event_(event) {}
~ScopedEvent() { event_->Signal(); }
private:
raw_ptr<base::WaitableEvent> event_;
};
// Has to be called after Initialize.
void AddGLSurfaceRefOnGpuThread(gl::GLSurface* surface) {
surface->AddRef();
}
void ReleaseGLSurfaceOnGpuThread(gl::GLSurface* surface,
cc::CompletionEvent* event) {
surface->Release();
event->Signal();
}
void ReleaseGLSurfaceOnClientThread(gl::GLSurface* surface,
CommandBufferTaskExecutor* task_executor) {
cc::CompletionEvent event;
task_executor->ScheduleOutOfOrderTask(base::BindOnce(
&ReleaseGLSurfaceOnGpuThread, base::Unretained(surface), &event));
event.Wait();
}
} // namespace
InProcessCommandBuffer::SharedImageInterfaceHelper::SharedImageInterfaceHelper(
InProcessCommandBuffer* command_buffer)
: command_buffer_(command_buffer) {}
void InProcessCommandBuffer::SharedImageInterfaceHelper::SetError() {
// Signal errors by losing the command buffer.
command_buffer_->command_buffer_->SetParseError(error::kLostContext);
}
void InProcessCommandBuffer::SharedImageInterfaceHelper::WrapTaskWithGpuCheck(
base::OnceClosure task) {
command_buffer_->RunTaskOnGpuThread(std::move(task));
}
bool InProcessCommandBuffer::SharedImageInterfaceHelper::EnableWrappedSkImage()
const {
// We need WrappedSkImage to support creating a SharedImage with pixel data
// when GL is unavailable. This is used in various unit tests.
return command_buffer_->context_state_ &&
!command_buffer_->context_state_->GrContextIsGL();
}
InProcessCommandBuffer::InProcessCommandBuffer(
CommandBufferTaskExecutor* task_executor,
const GURL& active_url)
: active_url_(active_url),
flush_event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
base::WaitableEvent::InitialState::NOT_SIGNALED),
task_executor_(task_executor),
fence_sync_wait_event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
base::WaitableEvent::InitialState::NOT_SIGNALED) {
// This binds the client sequence checker to the current sequence.
DCHECK_CALLED_ON_VALID_SEQUENCE(client_sequence_checker_);
// Detach gpu sequence checker because we want to bind it to the gpu sequence,
// and not the current (client) sequence except for webview (see Initialize).
DETACH_FROM_SEQUENCE(gpu_sequence_checker_);
DCHECK(task_executor_);
}
InProcessCommandBuffer::~InProcessCommandBuffer() {
Destroy();
}
gpu::ServiceTransferCache* InProcessCommandBuffer::GetTransferCacheForTest()
const {
return static_cast<raster::RasterDecoder*>(decoder_.get())
->GetTransferCacheForTest();
}
int InProcessCommandBuffer::GetRasterDecoderIdForTest() const {
return static_cast<raster::RasterDecoder*>(decoder_.get())
->DecoderIdForTest();
}
webgpu::WebGPUDecoder* InProcessCommandBuffer::GetWebGPUDecoderForTest() const {
return static_cast<webgpu::WebGPUDecoder*>(decoder_.get());
}
gpu::SharedImageInterface* InProcessCommandBuffer::GetSharedImageInterface()
const {
return shared_image_interface_.get();
}
// This call happens after Initialize. Initialize blocks on finishing gpu thread
// task to create GLSurface, so when this call happens, we have a valid
// GLSurface.
base::ScopedClosureRunner InProcessCommandBuffer::GetCacheBackBufferCb() {
// It is safe to use base::Unretained for |surface_| here since the we use a
// synchronous task to create and destroy it from the client thread.
task_executor_->ScheduleOutOfOrderTask(base::BindOnce(
&AddGLSurfaceRefOnGpuThread, base::Unretained(surface_.get())));
// Also safe to use base::Unretained for |task_executor_| since the caller is
// supposed to guarentee that it outlives the callback.
return base::ScopedClosureRunner(base::BindOnce(
&ReleaseGLSurfaceOnClientThread, base::Unretained(surface_.get()),
base::Unretained(task_executor_)));
}
bool InProcessCommandBuffer::MakeCurrent() {
DCHECK_CALLED_ON_VALID_SEQUENCE(gpu_sequence_checker_);
if (!context_) {
return true;
}
if (error::IsError(command_buffer_->GetState().error)) {
DLOG(ERROR) << "MakeCurrent failed because context lost.";
return false;
}
if (!decoder_->MakeCurrent()) {
DLOG(ERROR) << "Context lost because MakeCurrent failed.";
command_buffer_->SetParseError(error::kLostContext);
return false;
}
return true;
}
absl::optional<gles2::ProgramCache::ScopedCacheUse>
InProcessCommandBuffer::CreateCacheUse() {
absl::optional<gles2::ProgramCache::ScopedCacheUse> cache_use;
if (context_group_->has_program_cache()) {
cache_use.emplace(context_group_->get_program_cache(),
base::BindRepeating(&DecoderClient::CacheShader,
base::Unretained(this)));
}
return cache_use;
}
gpu::ContextResult InProcessCommandBuffer::Initialize(
scoped_refptr<gl::GLSurface> surface,
bool is_offscreen,
SurfaceHandle surface_handle,
const ContextCreationAttribs& attribs,
GpuMemoryBufferManager* gpu_memory_buffer_manager,
ImageFactory* image_factory,
GpuChannelManagerDelegate* gpu_channel_manager_delegate,
scoped_refptr<base::SingleThreadTaskRunner> task_runner,
SingleTaskSequence* task_sequence,
DisplayCompositorMemoryAndTaskControllerOnGpu* gpu_dependency,
gpu::raster::GrShaderCache* gr_shader_cache,
GpuProcessActivityFlags* activity_flags) {
DCHECK_CALLED_ON_VALID_SEQUENCE(client_sequence_checker_);
TRACE_EVENT0("gpu", "InProcessCommandBuffer::Initialize");
is_offscreen_ = is_offscreen;
gpu_memory_buffer_manager_ = gpu_memory_buffer_manager;
gpu_channel_manager_delegate_ = gpu_channel_manager_delegate;
if (surface) {
// If a surface is provided, we are running in a webview and should not have
// a task runner.
DCHECK(!task_runner);
// GPU thread must be the same as client thread due to GLSurface not being
// thread safe. This binds the gpu sequence checker to current sequence,
// which is the client sequence. Otherwise, the gpu sequence checker will
// be bound to the gpu thread's sequence when InitializeOnGpuThread runs.
DCHECK_CALLED_ON_VALID_SEQUENCE(gpu_sequence_checker_);
surface_ = surface;
} else {
DCHECK(task_runner);
origin_task_runner_ = std::move(task_runner);
}
client_thread_weak_ptr_ = client_thread_weak_ptr_factory_.GetWeakPtr();
Capabilities capabilities;
InitializeOnGpuThreadParams params(surface_handle, attribs, &capabilities,
image_factory, gpu_dependency,
gr_shader_cache, activity_flags);
base::OnceCallback<gpu::ContextResult(void)> init_task =
base::BindOnce(&InProcessCommandBuffer::InitializeOnGpuThread,
base::Unretained(this), params);
// If a |task_sequence| is passed in, command buffer is meant to share it with
// other users, take the raw pointer in this case because the |task_sequence|
// would be kept alive by VizProcessContextProvider. If no |task_sequence| is
// passed in, create one here.
if (task_sequence) {
task_sequence_ = std::move(task_sequence);
} else {
task_scheduler_holder_ =
std::make_unique<gpu::GpuTaskSchedulerHelper>(task_executor_);
task_sequence_ = task_scheduler_holder_->GetTaskSequence();
}
// Here we block by using a WaitableEvent to make sure InitializeOnGpuThread
// is finished as part of Initialize function. This also makes sure we won't
// try to cache GLSurface before the creation is finished.
base::WaitableEvent completion(
base::WaitableEvent::ResetPolicy::MANUAL,
base::WaitableEvent::InitialState::NOT_SIGNALED);
gpu::ContextResult result = gpu::ContextResult::kSuccess;
task_sequence_->ScheduleTask(
WrapTaskWithResult(std::move(init_task), &result, &completion), {});
completion.Wait();
if (result == gpu::ContextResult::kSuccess) {
capabilities_ = capabilities;
shared_image_interface_ = std::make_unique<SharedImageInterfaceInProcess>(
task_sequence_, gpu_dependency_,
std::make_unique<SharedImageInterfaceHelper>(this));
}
return result;
}
gpu::ContextResult InProcessCommandBuffer::InitializeOnGpuThread(
const InitializeOnGpuThreadParams& params) {
DCHECK_CALLED_ON_VALID_SEQUENCE(gpu_sequence_checker_);
TRACE_EVENT0("gpu", "InProcessCommandBuffer::InitializeOnGpuThread");
UpdateActiveUrl();
if (params.gpu_dependency) {
gpu_dependency_ = params.gpu_dependency;
} else {
gpu_dependency_holder_ =
std::make_unique<DisplayCompositorMemoryAndTaskControllerOnGpu>(
task_executor_, params.image_factory);
gpu_dependency_ = gpu_dependency_holder_.get();
}
if (gpu_channel_manager_delegate_ &&
gpu_channel_manager_delegate_->IsExiting()) {
LOG(ERROR) << "ContextResult::kTransientFailure: trying to create command "
"buffer during process shutdown.";
return gpu::ContextResult::kTransientFailure;
}
GpuDriverBugWorkarounds workarounds(
task_executor_->gpu_feature_info().enabled_gpu_driver_bug_workarounds);
std::unique_ptr<MemoryTracker> memory_tracker;
// Android WebView won't have a memory tracker.
if (task_executor_->ShouldCreateMemoryTracker()) {
const uint64_t client_tracing_id =
base::trace_event::MemoryDumpManager::GetInstance()
->GetTracingProcessId();
memory_tracker = std::make_unique<GpuCommandBufferMemoryTracker>(
gpu_dependency_->command_buffer_id(), client_tracing_id,
base::ThreadTaskRunnerHandle::Get(), /* obserer=*/nullptr);
}
auto feature_info = base::MakeRefCounted<gles2::FeatureInfo>(
workarounds, task_executor_->gpu_feature_info());
context_group_ = base::MakeRefCounted<gles2::ContextGroup>(
task_executor_->gpu_preferences(),
gles2::PassthroughCommandDecoderSupported(),
task_executor_->mailbox_manager(), std::move(memory_tracker),
task_executor_->shader_translator_cache(),
task_executor_->framebuffer_completeness_cache(), feature_info,
params.attribs.bind_generates_resource, task_executor_->image_manager(),
params.image_factory, nullptr /* progress_reporter */,
task_executor_->gpu_feature_info(), task_executor_->discardable_manager(),
task_executor_->passthrough_discardable_manager(),
task_executor_->shared_image_manager());
#if defined(OS_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_ |=
(params.attribs.gpu_preference == gl::GpuPreference::kLowPower);
#endif
use_virtualized_gl_context_ |= task_executor_->ForceVirtualizedGLContexts();
use_virtualized_gl_context_ |=
context_group_->feature_info()->workarounds().use_virtualized_gl_contexts;
if (context_group_->use_passthrough_cmd_decoder()) {
// Virtualized contexts don't work with passthrough command decoder.
// See https://crbug.com/914976
use_virtualized_gl_context_ = false;
}
// TODO(sunnyps): Should this use ScopedCrashKey instead?
crash_keys::gpu_gl_context_is_virtual.Set(use_virtualized_gl_context_ ? "1"
: "0");
command_buffer_ = std::make_unique<CommandBufferService>(
this, gpu_dependency_->memory_tracker());
context_state_ = task_executor_->GetSharedContextState();
if (!surface_) {
if (is_offscreen_) {
if (context_state_) {
surface_ = context_state_->surface();
} else {
// TODO(crbug.com/832243): GLES2CommandBufferStub has additional logic
// for offscreen surfaces that might be needed here.
surface_ = gl::init::CreateOffscreenGLSurface(gfx::Size());
if (!surface_.get()) {
DestroyOnGpuThread();
LOG(ERROR)
<< "ContextResult::kFatalFailure: Failed to create surface.";
return gpu::ContextResult::kFatalFailure;
}
}
} else {
gl::GLSurfaceFormat surface_format;
#if defined(OS_ANDROID)
// Handle Android low-bit-depth surface formats.
if (params.attribs.red_size <= 5 && params.attribs.green_size <= 6 &&
params.attribs.blue_size <= 5 && params.attribs.alpha_size == 0) {
// We hit this code path when creating the onscreen render context
// used for compositing on low-end Android devices.
surface_format.SetRGB565();
DVLOG(1) << __FUNCTION__ << ": Choosing RGB565 mode.";
}
if (!surface_format.IsCompatible(
task_executor_->share_group_surface_format())) {
use_virtualized_gl_context_ = false;
}
#endif
switch (params.attribs.color_space) {
case COLOR_SPACE_UNSPECIFIED:
surface_format.SetColorSpace(
gl::GLSurfaceFormat::COLOR_SPACE_UNSPECIFIED);
break;
case COLOR_SPACE_SRGB:
surface_format.SetColorSpace(gl::GLSurfaceFormat::COLOR_SPACE_SRGB);
break;
case COLOR_SPACE_DISPLAY_P3:
surface_format.SetColorSpace(
gl::GLSurfaceFormat::COLOR_SPACE_DISPLAY_P3);
break;
}
#if defined(USE_OZONE)
if (params.surface_handle != gpu::kNullSurfaceHandle) {
window_surface_ =
ui::OzonePlatform::GetInstance()
->GetSurfaceFactoryOzone()
->CreatePlatformWindowSurface(params.surface_handle);
}
#endif
surface_ = ImageTransportSurface::CreateNativeSurface(
gpu_thread_weak_ptr_factory_.GetWeakPtr(), params.surface_handle,
surface_format);
if (!surface_ || !surface_->Initialize(surface_format)) {
DestroyOnGpuThread();
LOG(ERROR)
<< "ContextResult::kSurfaceFailure: Failed to create surface.";
return gpu::ContextResult::kSurfaceFailure;
}
if (params.attribs.enable_swap_timestamps_if_supported &&
surface_->SupportsSwapTimestamps())
surface_->SetEnableSwapTimestamps();
}
}
sync_point_client_state_ =
task_executor_->sync_point_manager()->CreateSyncPointClientState(
GetNamespaceID(), GetCommandBufferID(),
task_sequence_->GetSequenceId());
if (context_group_->use_passthrough_cmd_decoder()) {
// When using the passthrough command decoder, never share with other
// contexts.
gl_share_group_ = base::MakeRefCounted<gl::GLShareGroup>();
} else {
// When using the validating command decoder, always use the global share
// group.
gl_share_group_ = task_executor_->GetShareGroup();
}
if (params.attribs.context_type == CONTEXT_TYPE_WEBGPU) {
if (!task_executor_->gpu_preferences().enable_webgpu) {
DLOG(ERROR) << "ContextResult::kFatalFailure: WebGPU not enabled";
return gpu::ContextResult::kFatalFailure;
}
std::unique_ptr<webgpu::WebGPUDecoder> webgpu_decoder(
webgpu::WebGPUDecoder::Create(
this, command_buffer_.get(), task_executor_->shared_image_manager(),
gpu_dependency_->memory_tracker(), task_executor_->outputter(),
task_executor_->gpu_preferences()));
gpu::ContextResult result = webgpu_decoder->Initialize();
if (result != gpu::ContextResult::kSuccess) {
DestroyOnGpuThread();
DLOG(ERROR) << "Failed to initialize WebGPU decoder.";
return result;
}
decoder_ = std::move(webgpu_decoder);
} else {
// TODO(khushalsagar): A lot of this initialization code is duplicated in
// GpuChannelManager. Pull it into a common util method.
scoped_refptr<gl::GLContext> real_context =
use_virtualized_gl_context_ ? gl_share_group_->shared_context()
: nullptr;
if (real_context &&
(!real_context->MakeCurrent(surface_.get()) ||
real_context->CheckStickyGraphicsResetStatus() != GL_NO_ERROR)) {
real_context = nullptr;
}
if (!real_context) {
real_context = gl::init::CreateGLContext(
gl_share_group_.get(), surface_.get(),
GenerateGLContextAttribs(params.attribs, context_group_.get()));
if (!real_context) {
// TODO(piman): This might not be fatal, we could recurse into
// CreateGLContext to get more info, tho it should be exceedingly
// rare and may not be recoverable anyway.
DestroyOnGpuThread();
LOG(ERROR) << "ContextResult::kFatalFailure: "
"Failed to create shared context for virtualization.";
return gpu::ContextResult::kFatalFailure;
}
// Ensure that context creation did not lose track of the intended share
// group.
DCHECK(real_context->share_group() == gl_share_group_.get());
task_executor_->gpu_feature_info().ApplyToGLContext(real_context.get());
if (use_virtualized_gl_context_)
gl_share_group_->SetSharedContext(real_context.get());
}
if (!real_context->MakeCurrent(surface_.get())) {
LOG(ERROR)
<< "ContextResult::kTransientFailure, failed to make context current";
DestroyOnGpuThread();
return ContextResult::kTransientFailure;
}
if (params.attribs.enable_raster_interface &&
!params.attribs.enable_gles2_interface) {
gr_shader_cache_ = params.gr_shader_cache;
if (!context_state_ ||
!context_state_->MakeCurrent(nullptr, /*needs_gl=*/true)) {
DestroyOnGpuThread();
LOG(ERROR) << "Failed to make context current.";
return ContextResult::kTransientFailure;
}
// TODO(penghuang): Merge all SharedContextState::Initialize*()
if (!context_state_->IsGLInitialized()) {
context_state_->InitializeGL(task_executor_->gpu_preferences(),
context_group_->feature_info());
}
context_ = context_state_->context();
decoder_.reset(raster::RasterDecoder::Create(
this, command_buffer_.get(), task_executor_->outputter(),
task_executor_->gpu_feature_info(), task_executor_->gpu_preferences(),
gpu_dependency_->memory_tracker(),
task_executor_->shared_image_manager(), context_state_,
true /*is_privileged*/));
} else {
decoder_.reset(gles2::GLES2Decoder::Create(this, command_buffer_.get(),
task_executor_->outputter(),
context_group_.get()));
if (use_virtualized_gl_context_) {
context_ = base::MakeRefCounted<GLContextVirtual>(
gl_share_group_.get(), real_context.get(), decoder_->AsWeakPtr());
if (!context_->Initialize(surface_.get(),
GenerateGLContextAttribs(
params.attribs, context_group_.get()))) {
// TODO(piman): This might not be fatal, we could recurse into
// CreateGLContext to get more info, tho it should be exceedingly
// rare and may not be recoverable anyway.
DestroyOnGpuThread();
LOG(ERROR) << "ContextResult::kFatalFailure: "
"Failed to initialize virtual GL context.";
return gpu::ContextResult::kFatalFailure;
}
if (!context_->MakeCurrent(surface_.get())) {
DestroyOnGpuThread();
// The caller should retry making a context, but this one won't work.
LOG(ERROR) << "ContextResult::kTransientFailure: "
"Could not make context current.";
return gpu::ContextResult::kTransientFailure;
}
} else {
context_ = real_context;
DCHECK(context_->IsCurrent(surface_.get()));
}
}
if (!context_group_->has_program_cache() &&
!context_group_->feature_info()->workarounds().disable_program_cache) {
context_group_->set_program_cache(task_executor_->program_cache());
}
}
gles2::DisallowedFeatures disallowed_features;
auto result = decoder_->Initialize(surface_, context_, is_offscreen_,
disallowed_features, params.attribs);
if (result != gpu::ContextResult::kSuccess) {
DestroyOnGpuThread();
DLOG(ERROR) << "Failed to initialize decoder.";
return result;
}
if (task_executor_->gpu_preferences().enable_gpu_service_logging)
decoder_->SetLogCommands(true);
if (context_ && use_virtualized_gl_context_) {
// If virtualized GL contexts are in use, then real GL context state
// is in an indeterminate state, since the GLStateRestorer was not
// initialized at the time the GLContextVirtual was made current. In
// the case that this command decoder is the next one to be
// processed, force a "full virtual" MakeCurrent to be performed.
context_->ForceReleaseVirtuallyCurrent();
if (!context_->MakeCurrent(surface_.get())) {
DestroyOnGpuThread();
LOG(ERROR) << "ContextResult::kTransientFailure: "
"Failed to make context current after initialization.";
return gpu::ContextResult::kTransientFailure;
}
}
*params.capabilities = decoder_->GetCapabilities();
image_factory_ = params.image_factory;
if (gpu_channel_manager_delegate_) {
gpu_channel_manager_delegate_->DidCreateContextSuccessfully();
gpu_channel_manager_delegate_->RegisterDisplayContext(this);
}
return gpu::ContextResult::kSuccess;
}
void InProcessCommandBuffer::Destroy() {
DCHECK_CALLED_ON_VALID_SEQUENCE(client_sequence_checker_);
TRACE_EVENT0("gpu", "InProcessCommandBuffer::Destroy");
client_thread_weak_ptr_factory_.InvalidateWeakPtrs();
gpu_control_client_ = nullptr;
shared_image_interface_ = nullptr;
// Here we block by using a WaitableEvent to make sure DestroyOnGpuThread is
// finished as part of Destroy.
base::WaitableEvent completion(
base::WaitableEvent::ResetPolicy::MANUAL,
base::WaitableEvent::InitialState::NOT_SIGNALED);
bool result = false;
base::OnceCallback<bool(void)> destroy_task = base::BindOnce(
&InProcessCommandBuffer::DestroyOnGpuThread, base::Unretained(this));
task_sequence_->ScheduleTask(
WrapTaskWithResult(std::move(destroy_task), &result, &completion), {});
completion.Wait();
task_sequence_ = nullptr;
}
bool InProcessCommandBuffer::DestroyOnGpuThread() {
DCHECK_CALLED_ON_VALID_SEQUENCE(gpu_sequence_checker_);
TRACE_EVENT0("gpu", "InProcessCommandBuffer::DestroyOnGpuThread");
UpdateActiveUrl();
if (gpu_channel_manager_delegate_)
gpu_channel_manager_delegate_->UnregisterDisplayContext(this);
// TODO(sunnyps): Should this use ScopedCrashKey instead?
crash_keys::gpu_gl_context_is_virtual.Set(use_virtualized_gl_context_ ? "1"
: "0");
gpu_thread_weak_ptr_factory_.InvalidateWeakPtrs();
// Clean up GL resources if possible.
bool have_context = context_.get() && context_->MakeCurrent(surface_.get());
absl::optional<gles2::ProgramCache::ScopedCacheUse> cache_use;
if (have_context)
cache_use = CreateCacheUse();
// Prepare to destroy the surface while the context is still current, because
// some surface destructors make GL calls.
if (surface_)
surface_->PrepareToDestroy(have_context);
if (decoder_) {
decoder_->Destroy(have_context);
decoder_.reset();
}
command_buffer_.reset();
surface_ = nullptr;
#if defined(USE_OZONE)
window_surface_.reset();
#endif
context_ = nullptr;
if (sync_point_client_state_) {
sync_point_client_state_->Destroy();
sync_point_client_state_ = nullptr;
}
gl_share_group_ = nullptr;
context_group_ = nullptr;
if (context_state_)
context_state_->MakeCurrent(nullptr);
context_state_ = nullptr;
if (gpu_dependency_holder_)
gpu_dependency_holder_.reset();
return true;
}
CommandBufferServiceClient::CommandBatchProcessedResult
InProcessCommandBuffer::OnCommandBatchProcessed() {
return task_sequence_->ShouldYield() ? kPauseExecution : kContinueExecution;
}
void InProcessCommandBuffer::OnParseError() {
DCHECK_CALLED_ON_VALID_SEQUENCE(gpu_sequence_checker_);
// There is a race between service side FlushOnGpuThread() calling
// UpdateLastStateOnGpuThread() and client side calling GetLastState().
// Update last_state_ now before notifying client side to save the
// error and make the race benign.
UpdateLastStateOnGpuThread();
CommandBuffer::State state = command_buffer_->GetState();
if (gpu_channel_manager_delegate_) {
// Tell the browser about this context loss so it can determine whether
// client APIs like WebGL need to be blocked from automatically running.
// |offscreen| is used to determine if it's compositing context or not.
gpu_channel_manager_delegate_->DidLoseContext(
/*offscreen=*/false, state.context_lost_reason, active_url_.url());
// Check the error reason and robustness extension to get a better idea if
// the GL context was lost. We might try restarting the GPU process to
// recover from actual GL context loss but it's unnecessary for other types
// of parse errors.
if (state.error == error::kLostContext) {
bool was_lost_by_robustness =
decoder_ && decoder_->WasContextLostByRobustnessExtension();
if (was_lost_by_robustness) {
GpuDriverBugWorkarounds workarounds(
GetGpuFeatureInfo().enabled_gpu_driver_bug_workarounds);
// Lose all other contexts.
if (gl::GLContext::LosesAllContextsOnContextLost() ||
(context_state_ && context_state_->use_virtualized_gl_contexts())) {
gpu_channel_manager_delegate_->LoseAllContexts();
}
// Work around issues with recovery by allowing a new GPU process to
// launch.
if (workarounds.exit_on_context_lost)
gpu_channel_manager_delegate_->MaybeExitOnContextLost();
}
}
}
PostOrRunClientCallback(base::BindOnce(&InProcessCommandBuffer::OnContextLost,
client_thread_weak_ptr_));
}
void InProcessCommandBuffer::MarkContextLost() {
if (!command_buffer_ ||
command_buffer_->GetState().error == error::kLostContext) {
return;
}
command_buffer_->SetContextLostReason(error::kUnknown);
if (decoder_)
decoder_->MarkContextLost(error::kUnknown);
command_buffer_->SetParseError(error::kLostContext);
}
void InProcessCommandBuffer::OnContextLost() {
DCHECK_CALLED_ON_VALID_SEQUENCE(client_sequence_checker_);
#if DCHECK_IS_ON()
// This method shouldn't be called more than once.
DCHECK(!context_lost_);
context_lost_ = true;
#endif
if (gpu_control_client_)
gpu_control_client_->OnGpuControlLostContext();
}
void InProcessCommandBuffer::RunTaskOnGpuThread(base::OnceClosure task) {
DCHECK_CALLED_ON_VALID_SEQUENCE(gpu_sequence_checker_);
UpdateActiveUrl();
crash_keys::gpu_gl_context_is_virtual.Set(use_virtualized_gl_context_ ? "1"
: "0");
std::move(task).Run();
}
void InProcessCommandBuffer::ScheduleGpuTask(
base::OnceClosure task,
std::vector<SyncToken> sync_token_fences,
SingleTaskSequence::ReportingCallback report_callback) {
base::OnceClosure gpu_task = base::BindOnce(
&InProcessCommandBuffer::RunTaskOnGpuThread,
gpu_thread_weak_ptr_factory_.GetWeakPtr(), std::move(task));
task_sequence_->ScheduleTask(std::move(gpu_task),
std::move(sync_token_fences),
std::move(report_callback));
}
void InProcessCommandBuffer::ContinueGpuTask(base::OnceClosure task) {
DCHECK_CALLED_ON_VALID_SEQUENCE(gpu_sequence_checker_);
base::OnceClosure gpu_task = base::BindOnce(
&InProcessCommandBuffer::RunTaskOnGpuThread,
gpu_thread_weak_ptr_factory_.GetWeakPtr(), std::move(task));
task_sequence_->ContinueTask(std::move(gpu_task));
}
CommandBuffer::State InProcessCommandBuffer::GetLastState() {
base::AutoLock lock(last_state_lock_);
return last_state_;
}
void InProcessCommandBuffer::UpdateLastStateOnGpuThread() {
DCHECK_CALLED_ON_VALID_SEQUENCE(gpu_sequence_checker_);
base::AutoLock lock(last_state_lock_);
command_buffer_->UpdateState();
State state = command_buffer_->GetState();
if (state.generation - last_state_.generation < 0x80000000U)
last_state_ = state;
}
bool InProcessCommandBuffer::HasUnprocessedCommandsOnGpuThread() {
DCHECK_CALLED_ON_VALID_SEQUENCE(gpu_sequence_checker_);
if (command_buffer_) {
CommandBuffer::State state = command_buffer_->GetState();
return command_buffer_->put_offset() != state.get_offset &&
!error::IsError(state.error);
}
return false;
}
void InProcessCommandBuffer::ReportTaskReady(base::TimeTicks task_ready) {
gpu_task_ready_ = task_ready;
}
void InProcessCommandBuffer::FlushOnGpuThread(
int32_t put_offset,
const std::vector<SyncToken>& sync_token_fences,
base::TimeTicks flush_timestamp) {
DCHECK_CALLED_ON_VALID_SEQUENCE(gpu_sequence_checker_);
TRACE_EVENT1("gpu", "InProcessCommandBuffer::FlushOnGpuThread", "put_offset",
put_offset);
if (!flush_timestamp.is_null()) {
viz_scheduled_draw_ = flush_timestamp;
gpu_started_draw_ = base::TimeTicks::Now();
}
ScopedEvent handle_flush(&flush_event_);
// Check if sync token waits are invalid or already complete. Do not use
// SyncPointManager::IsSyncTokenReleased() as it can't say if the wait is
// invalid.
for (const auto& sync_token : sync_token_fences)
DCHECK(!sync_point_client_state_->Wait(sync_token, base::DoNothing()));
if (!MakeCurrent())
return;
auto cache_use = CreateCacheUse();
{
absl::optional<raster::GrShaderCache::ScopedCacheUse> gr_cache_use;
if (gr_shader_cache_)
gr_cache_use.emplace(gr_shader_cache_, kDisplayCompositorClientId);
command_buffer_->Flush(put_offset, decoder_.get());
}
// Update state before signaling the flush event.
UpdateLastStateOnGpuThread();
bool has_unprocessed_commands = HasUnprocessedCommandsOnGpuThread();
if (!command_buffer_->scheduled() || has_unprocessed_commands) {
ContinueGpuTask(base::BindOnce(&InProcessCommandBuffer::FlushOnGpuThread,
gpu_thread_weak_ptr_factory_.GetWeakPtr(),
put_offset, sync_token_fences,
base::TimeTicks()));
}
// If we've processed all pending commands but still have pending queries,
// pump idle work until the query is passed.
if (!has_unprocessed_commands &&
(decoder_->HasMoreIdleWork() || decoder_->HasPendingQueries())) {
ScheduleDelayedWorkOnGpuThread();
}
}
void InProcessCommandBuffer::PerformDelayedWorkOnGpuThread() {
DCHECK_CALLED_ON_VALID_SEQUENCE(gpu_sequence_checker_);
delayed_work_pending_ = false;
// TODO(sunnyps): Should this use ScopedCrashKey instead?
crash_keys::gpu_gl_context_is_virtual.Set(use_virtualized_gl_context_ ? "1"
: "0");
if (MakeCurrent()) {
auto cache_use = CreateCacheUse();
decoder_->PerformIdleWork();
decoder_->ProcessPendingQueries(false);
if (decoder_->HasMoreIdleWork() || decoder_->HasPendingQueries()) {
ScheduleDelayedWorkOnGpuThread();
}
}
}
void InProcessCommandBuffer::ScheduleDelayedWorkOnGpuThread() {
DCHECK_CALLED_ON_VALID_SEQUENCE(gpu_sequence_checker_);
if (delayed_work_pending_)
return;
delayed_work_pending_ = true;
task_executor_->ScheduleDelayedWork(
base::BindOnce(&InProcessCommandBuffer::PerformDelayedWorkOnGpuThread,
gpu_thread_weak_ptr_factory_.GetWeakPtr()));
}
void InProcessCommandBuffer::Flush(int32_t put_offset) {
if (GetLastState().error != error::kNoError)
return;
if (last_put_offset_ == put_offset)
return;
TRACE_EVENT1("gpu", "InProcessCommandBuffer::Flush", "put_offset",
put_offset);
last_put_offset_ = put_offset;
std::vector<SyncToken> sync_token_fences;
next_flush_sync_token_fences_.swap(sync_token_fences);
base::TimeTicks flush_timestamp;
SingleTaskSequence::ReportingCallback reporting_callback;
if (should_measure_next_flush_) {
should_measure_next_flush_ = false;
flush_timestamp = base::TimeTicks::Now();
reporting_callback =
base::BindOnce(&InProcessCommandBuffer::ReportTaskReady,
gpu_thread_weak_ptr_factory_.GetWeakPtr());
}
// Don't use std::move() for |sync_token_fences| because evaluation order for
// arguments is not defined.
ScheduleGpuTask(
base::BindOnce(&InProcessCommandBuffer::FlushOnGpuThread,
gpu_thread_weak_ptr_factory_.GetWeakPtr(), put_offset,
sync_token_fences, flush_timestamp),
sync_token_fences, std::move(reporting_callback));
}
void InProcessCommandBuffer::OrderingBarrier(int32_t put_offset) {
Flush(put_offset);
}
CommandBuffer::State InProcessCommandBuffer::WaitForTokenInRange(int32_t start,
int32_t end) {
TRACE_EVENT2("gpu", "InProcessCommandBuffer::WaitForTokenInRange", "start",
start, "end", end);
State last_state = GetLastState();
while (!InRange(start, end, last_state.token) &&
last_state.error == error::kNoError) {
flush_event_.Wait();
last_state = GetLastState();
}
return last_state;
}
CommandBuffer::State InProcessCommandBuffer::WaitForGetOffsetInRange(
uint32_t set_get_buffer_count,
int32_t start,
int32_t end) {
TRACE_EVENT2("gpu", "InProcessCommandBuffer::WaitForGetOffsetInRange",
"start", start, "end", end);
State last_state = GetLastState();
while (((set_get_buffer_count != last_state.set_get_buffer_count) ||
!InRange(start, end, last_state.get_offset)) &&
last_state.error == error::kNoError) {
flush_event_.Wait();
last_state = GetLastState();
}
return last_state;
}
void InProcessCommandBuffer::SetGetBuffer(int32_t shm_id) {
if (GetLastState().error != error::kNoError)
return;