android_webview: Remove dependency on webkit's ContextProviderInProcess.

android_webview/browser/aw_render_thread_context_provider.cc

-// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// 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 "ui/compositor/test/in_process_context_provider.h"
+#include "android_webview/browser/aw_render_thread_context_provider.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/lazy_instance.h"
-#include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/output/managed_memory_policy.h"
+#include "gpu/blink/webgraphicscontext3d_impl.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 ui {
+namespace android_webview {
 
 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;
 
 }  // namespace
 
 // static
-scoped_refptr<InProcessContextProvider> InProcessContextProvider::Create(
-    const gpu::gles2::ContextCreationAttribHelper& attribs,
-    bool lose_context_when_out_of_memory,
-    gfx::AcceleratedWidget window,
-    const std::string& debug_name) {
-  return new InProcessContextProvider(
-      attribs, lose_context_when_out_of_memory, window, debug_name);
+scoped_refptr<AwRenderThreadContextProvider>
+AwRenderThreadContextProvider::Create(
+    scoped_refptr<gfx::GLSurface> surface,
+    scoped_refptr<gpu::InProcessCommandBuffer::Service> service) {
+  return new AwRenderThreadContextProvider(surface, service);
 }
 
-// static
-scoped_refptr<InProcessContextProvider>
-InProcessContextProvider::CreateOffscreen(
-    bool lose_context_when_out_of_memory) {
-  gpu::gles2::ContextCreationAttribHelper attribs;
-  attribs.alpha_size = 8;
-  attribs.blue_size = 8;
-  attribs.green_size = 8;
-  attribs.red_size = 8;
-  attribs.depth_size = 0;
-  attribs.stencil_size = 8;
-  attribs.samples = 0;
-  attribs.sample_buffers = 0;
-  attribs.fail_if_major_perf_caveat = false;
-  attribs.bind_generates_resource = false;
-  return new InProcessContextProvider(
-      attribs, lose_context_when_out_of_memory, gfx::kNullAcceleratedWidget,
-      "Offscreen");
+AwRenderThreadContextProvider::AwRenderThreadContextProvider(
+    scoped_refptr<gfx::GLSurface> surface,
+    scoped_refptr<gpu::InProcessCommandBuffer::Service> service)
+    : destroyed_(false) {
+  DCHECK(main_thread_checker_.CalledOnValidThread());
+
+  blink::WebGraphicsContext3D::Attributes attributes;
+  attributes.antialias = false;
+  attributes.depth = false;
+  attributes.stencil = false;
+  attributes.shareResources = true;
+  attributes.noAutomaticFlushes = true;
+  gpu::gles2::ContextCreationAttribHelper attribs_for_gles2;
+  gpu_blink::WebGraphicsContext3DImpl::ConvertAttributes(attributes,
+                                                         &attribs_for_gles2);
+  attribs_for_gles2.lose_context_when_out_of_memory = true;
+
+  context_.reset(gpu::GLInProcessContext::Create(
+      service,
+      surface,
+      surface->IsOffscreen(),
+      gfx::kNullAcceleratedWidget,
+      surface->GetSize(),
+      NULL /* share_context */,
+      false /* share_resources */,
+      attribs_for_gles2,
+      gfx::PreferDiscreteGpu,
+      gpu::GLInProcessContextSharedMemoryLimits(),
+      nullptr,
+      nullptr));
 }
 
-InProcessContextProvider::InProcessContextProvider(
-    const gpu::gles2::ContextCreationAttribHelper& attribs,
-    bool lose_context_when_out_of_memory,
-    gfx::AcceleratedWidget window,
-    const std::string& debug_name)
-    : attribs_(attribs),
-      lose_context_when_out_of_memory_(lose_context_when_out_of_memory),
-      window_(window),
-      debug_name_(debug_name),
-      destroyed_(false) {
+AwRenderThreadContextProvider::~AwRenderThreadContextProvider() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
-  context_thread_checker_.DetachFromThread();
 }
 
-InProcessContextProvider::~InProcessContextProvider() {
-  DCHECK(main_thread_checker_.CalledOnValidThread() ||
-         context_thread_checker_.CalledOnValidThread());
-}
+bool AwRenderThreadContextProvider::BindToCurrentThread() {
+  // This is called on the thread the context will be used.
+  DCHECK(main_thread_checker_.CalledOnValidThread());
 
-bool InProcessContextProvider::BindToCurrentThread() {
-  // This is called on the thread the context will be used.
-  DCHECK(context_thread_checker_.CalledOnValidThread());
-
-  if (!context_) {
-    gfx::GpuPreference gpu_preference = gfx::PreferDiscreteGpu;
-    context_.reset(gpu::GLInProcessContext::Create(
-        nullptr,                           /* service */
-        nullptr,                           /* surface */
-        !window_,                          /* is_offscreen */
-        window_, gfx::Size(1, 1), nullptr, /* share_context */
-        true,                              /* share_resources */
-        attribs_, gpu_preference, gpu::GLInProcessContextSharedMemoryLimits(),
-        nullptr, nullptr));
-
-    if (!context_)
-      return false;
-
-    context_->SetContextLostCallback(base::Bind(
-        &InProcessContextProvider::OnLostContext, base::Unretained(this)));
-  }
+  context_->SetContextLostCallback(base::Bind(
+      &AwRenderThreadContextProvider::OnLostContext, base::Unretained(this)));
 
   capabilities_.gpu = context_->GetImplementation()->capabilities();

[boliu, 2015/04/22 07:59:18]

These two lines can move to construtor too. This method can just be a DCHECK and
no-op.

[tfarina, 2015/04/23 12:07:51]

Done.

 
-  std::string unique_context_name =
-      base::StringPrintf("%s-%p", debug_name_.c_str(), context_.get());
-  context_->GetImplementation()->TraceBeginCHROMIUM(
-      "gpu_toplevel", unique_context_name.c_str());
-
   return true;
 }
 
 cc::ContextProvider::Capabilities
-InProcessContextProvider::ContextCapabilities() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+AwRenderThreadContextProvider::ContextCapabilities() {
+  DCHECK(main_thread_checker_.CalledOnValidThread());
   return capabilities_;
 }
 
-gpu::gles2::GLES2Interface* InProcessContextProvider::ContextGL() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+gpu::gles2::GLES2Interface* AwRenderThreadContextProvider::ContextGL() {
+  DCHECK(main_thread_checker_.CalledOnValidThread());
 
   return context_->GetImplementation();
 }
 
-gpu::ContextSupport* InProcessContextProvider::ContextSupport() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+gpu::ContextSupport* AwRenderThreadContextProvider::ContextSupport() {
+  DCHECK(main_thread_checker_.CalledOnValidThread());
 
   return context_->GetImplementation();
 }
 
 static void BindGrContextCallback(const GrGLInterface* interface) {
   cc::ContextProvider* context_provider =
-      reinterpret_cast<InProcessContextProvider*>(interface->fCallbackData);
+      reinterpret_cast<AwRenderThreadContextProvider*>(
+          interface->fCallbackData);
 
   gles2::SetGLContext(context_provider->ContextGL());
 }
 
-class GrContext* InProcessContextProvider::GrContext() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+class GrContext* AwRenderThreadContextProvider::GrContext() {
+  DCHECK(main_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(skia_bindings::CreateCommandBufferSkiaGLBinding());
   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 InProcessContextProvider::SetupLock() {
+void AwRenderThreadContextProvider::SetupLock() {
+  context_->SetLock(&context_lock_);
 }
 
-base::Lock* InProcessContextProvider::GetLock() {
+base::Lock* AwRenderThreadContextProvider::GetLock() {
   return &context_lock_;
 }
 
-bool InProcessContextProvider::IsContextLost() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+bool AwRenderThreadContextProvider::IsContextLost() {
+  DCHECK(main_thread_checker_.CalledOnValidThread());
 
-  base::AutoLock lock(destroyed_lock_);
+  base::AutoLock lock(context_lock_);

[boliu, 2015/04/22 07:59:18]

Should never have to directly lock context_lock_ in this class. Remove all of
them.

[tfarina, 2015/04/23 12:07:51]

Done.

   return destroyed_;
 }
 
-void InProcessContextProvider::VerifyContexts() {
+void AwRenderThreadContextProvider::VerifyContexts() {
 }
 
-void InProcessContextProvider::DeleteCachedResources() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+void AwRenderThreadContextProvider::DeleteCachedResources() {
+  DCHECK(main_thread_checker_.CalledOnValidThread());
 
   if (gr_context_) {
     TRACE_EVENT_INSTANT0("gpu", "GrContext::freeGpuResources",
                          TRACE_EVENT_SCOPE_THREAD);
     gr_context_->freeGpuResources();
   }
 }
 
-bool InProcessContextProvider::DestroyedOnMainThread() {
+bool AwRenderThreadContextProvider::DestroyedOnMainThread() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
-  base::AutoLock lock(destroyed_lock_);
+  base::AutoLock lock(context_lock_);
   return destroyed_;
 }
 
-void InProcessContextProvider::SetLostContextCallback(
+void AwRenderThreadContextProvider::SetLostContextCallback(
     const LostContextCallback& lost_context_callback) {
   lost_context_callback_ = lost_context_callback;
 }
 
-void InProcessContextProvider::SetMemoryPolicyChangedCallback(
+void AwRenderThreadContextProvider::SetMemoryPolicyChangedCallback(
     const MemoryPolicyChangedCallback& memory_policy_changed_callback) {
   // There's no memory manager for the in-process implementation.
 }
 
-void InProcessContextProvider::OnLostContext() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+void AwRenderThreadContextProvider::OnLostContext() {
+  DCHECK(main_thread_checker_.CalledOnValidThread());
   {
-    base::AutoLock lock(destroyed_lock_);
+    base::AutoLock lock(context_lock_);
     if (destroyed_)
       return;
     destroyed_ = true;
   }
   if (!lost_context_callback_.is_null())
     base::ResetAndReturn(&lost_context_callback_).Run();
   if (gr_context_)
     gr_context_->abandonContext();
 }
 
-}  // namespace ui
+}  // namespace android_webview