Move mus to //services/ui

components/mus/surfaces/surfaces_context_provider.cc

-// 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