Restructure contents of blimp/client.

blimp/client/compositor/blimp_context_provider.cc

-// Copyright 2015 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 "blimp/client/compositor/blimp_context_provider.h"
-
-#include "base/bind.h"
-#include "base/callback_helpers.h"
-#include "base/lazy_instance.h"
-#include "gpu/command_buffer/client/gl_in_process_context.h"
-#include "gpu/command_buffer/client/gles2_implementation.h"
-#include "gpu/command_buffer/client/gles2_lib.h"
-#include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
-#include "third_party/skia/include/gpu/GrContext.h"
-#include "third_party/skia/include/gpu/gl/GrGLInterface.h"
-
-namespace blimp {
-namespace client {
-namespace {
-
-// Singleton used to initialize and terminate the gles2 library.
-class GLES2Initializer {
- public:
-  GLES2Initializer() { gles2::Initialize(); }
-
-  ~GLES2Initializer() { gles2::Terminate(); }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(GLES2Initializer);
-};
-
-base::LazyInstance<GLES2Initializer> g_gles2_initializer =
-    LAZY_INSTANCE_INITIALIZER;
-
-static void BindGrContextCallback(const GrGLInterface* interface) {
-  BlimpContextProvider* context_provider =
-      reinterpret_cast<BlimpContextProvider*>(interface->fCallbackData);
-
-  gles2::SetGLContext(context_provider->ContextGL());
-}
-
-}  // namespace
-
-// static
-scoped_refptr<BlimpContextProvider> BlimpContextProvider::Create(
-    gfx::AcceleratedWidget widget) {
-  return new BlimpContextProvider(widget);
-}
-
-BlimpContextProvider::BlimpContextProvider(gfx::AcceleratedWidget widget) {
-  context_thread_checker_.DetachFromThread();
-
-  gpu::gles2::ContextCreationAttribHelper attribs_for_gles2;
-  attribs_for_gles2.alpha_size = 8;
-  attribs_for_gles2.depth_size = 0;
-  attribs_for_gles2.stencil_size = 0;
-  attribs_for_gles2.samples = 0;
-  attribs_for_gles2.sample_buffers = 0;
-  attribs_for_gles2.fail_if_major_perf_caveat = false;
-  attribs_for_gles2.bind_generates_resource = false;
-  attribs_for_gles2.context_type = gpu::gles2::CONTEXT_TYPE_OPENGLES2;
-  attribs_for_gles2.lose_context_when_out_of_memory = true;
-
-  context_.reset(gpu::GLInProcessContext::Create(
-      nullptr /* service */, nullptr /* surface */, false /* is_offscreen */,
-      widget, gfx::Size(1, 1), nullptr /* share_context */,
-      false /* share_resources */, attribs_for_gles2, gfx::PreferDiscreteGpu,
-      gpu::GLInProcessContextSharedMemoryLimits(),
-      nullptr /* gpu_memory_buffer_manager */, nullptr /* memory_limits */));
-  context_->SetContextLostCallback(
-      base::Bind(&BlimpContextProvider::OnLostContext, base::Unretained(this)));
-}
-
-BlimpContextProvider::~BlimpContextProvider() {
-  DCHECK(main_thread_checker_.CalledOnValidThread() ||
-         context_thread_checker_.CalledOnValidThread());
-}
-
-bool BlimpContextProvider::BindToCurrentThread() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
-  capabilities_.gpu = context_->GetImplementation()->capabilities();
-  capabilities_.gpu.image = true;
-  return true;
-}
-
-void BlimpContextProvider::DetachFromThread() {
-  context_thread_checker_.DetachFromThread();
-}
-
-cc::ContextProvider::Capabilities BlimpContextProvider::ContextCapabilities() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
-  return capabilities_;
-}
-
-gpu::gles2::GLES2Interface* BlimpContextProvider::ContextGL() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
-  return context_->GetImplementation();
-}
-
-gpu::ContextSupport* BlimpContextProvider::ContextSupport() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
-  return context_->GetImplementation();
-}
-
-class GrContext* BlimpContextProvider::GrContext() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
-
-  if (gr_context_)
-    return gr_context_.get();
-
-  // The GrGLInterface factory will make GL calls using the C GLES2 interface.
-  // Make sure the gles2 library is initialized first on exactly one thread.
-  g_gles2_initializer.Get();
-  gles2::SetGLContext(ContextGL());
-
-  skia::RefPtr<GrGLInterface> interface = skia::AdoptRef(new GrGLInterface);
-  skia_bindings::InitCommandBufferSkiaGLBinding(interface.get());
-  interface->fCallback = BindGrContextCallback;
-  interface->fCallbackData = reinterpret_cast<GrGLInterfaceCallbackData>(this);
-
-  gr_context_ = skia::AdoptRef(GrContext::Create(
-      kOpenGL_GrBackend, reinterpret_cast<GrBackendContext>(interface.get())));
-
-  return gr_context_.get();
-}
-
-void BlimpContextProvider::InvalidateGrContext(uint32_t state) {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
-
-  if (gr_context_)
-    gr_context_.get()->resetContext(state);
-}
-
-void BlimpContextProvider::SetupLock() {
-  context_->SetLock(&context_lock_);
-}
-
-base::Lock* BlimpContextProvider::GetLock() {
-  return &context_lock_;
-}
-
-void BlimpContextProvider::DeleteCachedResources() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
-
-  if (gr_context_)
-    gr_context_->freeGpuResources();
-}
-
-void BlimpContextProvider::SetLostContextCallback(
-    const LostContextCallback& lost_context_callback) {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
-  lost_context_callback_ = lost_context_callback;
-}
-
-void BlimpContextProvider::OnLostContext() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
-  if (!lost_context_callback_.is_null())
-    base::ResetAndReturn(&lost_context_callback_).Run();
-  if (gr_context_)
-    gr_context_->abandonContext();
-}
-
-}  // namespace client
-}  // namespace blimp