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// Copyright 2014 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 "components/mus/surfaces/surfaces_context_provider.h"
#include <stddef.h>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/command_line.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread_task_runner_handle.h"
#include "build/build_config.h"
#include "components/mus/common/switches.h"
#include "components/mus/gles2/command_buffer_driver.h"
#include "components/mus/gles2/command_buffer_impl.h"
#include "components/mus/gles2/command_buffer_local.h"
#include "components/mus/gles2/gpu_state.h"
#include "components/mus/gpu/gpu_service_mus.h"
#include "components/mus/surfaces/surfaces_context_provider_delegate.h"
#include "gpu/command_buffer/client/gles2_cmd_helper.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "gpu/command_buffer/client/shared_memory_limits.h"
#include "gpu/command_buffer/client/transfer_buffer.h"
#include "gpu/ipc/client/command_buffer_proxy_impl.h"
#include "ui/gl/gpu_preference.h"
namespace mus {
SurfacesContextProvider::SurfacesContextProvider(
gfx::AcceleratedWidget widget,
const scoped_refptr<GpuState>& state)
: use_chrome_gpu_command_buffer_(false),
delegate_(nullptr),
widget_(widget),
command_buffer_local_(nullptr) {
// TODO(penghuang): Kludge: Use mojo command buffer when running on Windows
// since Chrome command buffer breaks unit tests
#if defined(OS_WIN)
use_chrome_gpu_command_buffer_ = false;
#else
use_chrome_gpu_command_buffer_ =
!base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kUseMojoGpuCommandBufferInMus);
#endif
if (!use_chrome_gpu_command_buffer_) {
command_buffer_local_ = new CommandBufferLocal(this, widget_, state);
} else {
GpuServiceMus* service = GpuServiceMus::GetInstance();
gpu::CommandBufferProxyImpl* shared_command_buffer = nullptr;
gpu::GpuStreamId stream_id = gpu::GpuStreamId::GPU_STREAM_DEFAULT;
gpu::GpuStreamPriority stream_priority = gpu::GpuStreamPriority::NORMAL;
gpu::gles2::ContextCreationAttribHelper attributes;
attributes.alpha_size = -1;
attributes.depth_size = 0;
attributes.stencil_size = 0;
attributes.samples = 0;
attributes.sample_buffers = 0;
attributes.bind_generates_resource = false;
attributes.lose_context_when_out_of_memory = true;
GURL active_url;
scoped_refptr<base::SingleThreadTaskRunner> task_runner =
base::ThreadTaskRunnerHandle::Get();
command_buffer_proxy_impl_ = gpu::CommandBufferProxyImpl::Create(
service->gpu_channel_local(), widget, shared_command_buffer, stream_id,
stream_priority, attributes, active_url, task_runner);
command_buffer_proxy_impl_->SetSwapBuffersCompletionCallback(
base::Bind(&SurfacesContextProvider::OnGpuSwapBuffersCompleted,
base::Unretained(this)));
command_buffer_proxy_impl_->SetUpdateVSyncParametersCallback(
base::Bind(&SurfacesContextProvider::OnUpdateVSyncParameters,
base::Unretained(this)));
}
}
void SurfacesContextProvider::SetDelegate(
SurfacesContextProviderDelegate* delegate) {
DCHECK(!delegate_);
delegate_ = delegate;
}
// This routine needs to be safe to call more than once.
// This is called when we have an accelerated widget.
bool SurfacesContextProvider::BindToCurrentThread() {
if (implementation_)
return true;
// SurfacesContextProvider should always live on the same thread as the
// Window Manager.
DCHECK(CalledOnValidThread());
gpu::GpuControl* gpu_control = nullptr;
gpu::CommandBuffer* command_buffer = nullptr;
if (!use_chrome_gpu_command_buffer_) {
if (!command_buffer_local_->Initialize())
return false;
gpu_control = command_buffer_local_;
command_buffer = command_buffer_local_;
} else {
if (!command_buffer_proxy_impl_)
return false;
gpu_control = command_buffer_proxy_impl_.get();
command_buffer = command_buffer_proxy_impl_.get();
}
gles2_helper_.reset(new gpu::gles2::GLES2CmdHelper(command_buffer));
constexpr gpu::SharedMemoryLimits default_limits;
if (!gles2_helper_->Initialize(default_limits.command_buffer_size))
return false;
gles2_helper_->SetAutomaticFlushes(false);
transfer_buffer_.reset(new gpu::TransferBuffer(gles2_helper_.get()));
capabilities_ = gpu_control->GetCapabilities();
bool bind_generates_resource =
!!capabilities_.bind_generates_resource_chromium;
// TODO(piman): Some contexts (such as compositor) want this to be true, so
// this needs to be a public parameter.
bool lose_context_when_out_of_memory = false;
bool support_client_side_arrays = false;
implementation_.reset(new gpu::gles2::GLES2Implementation(
gles2_helper_.get(), NULL, transfer_buffer_.get(),
bind_generates_resource, lose_context_when_out_of_memory,
support_client_side_arrays, gpu_control));
return implementation_->Initialize(
default_limits.start_transfer_buffer_size,
default_limits.min_transfer_buffer_size,
default_limits.max_transfer_buffer_size,
default_limits.mapped_memory_reclaim_limit);
}
gpu::gles2::GLES2Interface* SurfacesContextProvider::ContextGL() {
DCHECK(implementation_);
return implementation_.get();
}
gpu::ContextSupport* SurfacesContextProvider::ContextSupport() {
return implementation_.get();
}
class GrContext* SurfacesContextProvider::GrContext() {
return NULL;
}
void SurfacesContextProvider::InvalidateGrContext(uint32_t state) {}
gpu::Capabilities SurfacesContextProvider::ContextCapabilities() {
return capabilities_;
}
base::Lock* SurfacesContextProvider::GetLock() {
// This context provider is not used on multiple threads.
NOTREACHED();
return nullptr;
}
void SurfacesContextProvider::SetLostContextCallback(
const LostContextCallback& lost_context_callback) {
implementation_->SetLostContextCallback(lost_context_callback);
}
SurfacesContextProvider::~SurfacesContextProvider() {
implementation_->Flush();
implementation_.reset();
transfer_buffer_.reset();
gles2_helper_.reset();
command_buffer_proxy_impl_.reset();
if (command_buffer_local_) {
command_buffer_local_->Destroy();
command_buffer_local_ = nullptr;
}
}
void SurfacesContextProvider::UpdateVSyncParameters(
const base::TimeTicks& timebase,
const base::TimeDelta& interval) {
if (delegate_)
delegate_->OnVSyncParametersUpdated(timebase, interval);
}
void SurfacesContextProvider::GpuCompletedSwapBuffers(gfx::SwapResult result) {
if (!swap_buffers_completion_callback_.is_null()) {
swap_buffers_completion_callback_.Run(result);
}
}
void SurfacesContextProvider::OnGpuSwapBuffersCompleted(
const std::vector<ui::LatencyInfo>& latency_info,
gfx::SwapResult result,
const gpu::GpuProcessHostedCALayerTreeParamsMac* params_mac) {
if (!swap_buffers_completion_callback_.is_null()) {
swap_buffers_completion_callback_.Run(result);
}
}
void SurfacesContextProvider::OnUpdateVSyncParameters(
base::TimeTicks timebase,
base::TimeDelta interval) {
if (delegate_)
delegate_->OnVSyncParametersUpdated(timebase, interval);
}
void SurfacesContextProvider::SetSwapBuffersCompletionCallback(
gl::GLSurface::SwapCompletionCallback callback) {
swap_buffers_completion_callback_ = callback;
}
} // namespace mus
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