ContextProvider in OutputSurface

cc/test/fake_context_provider.cc

+// 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 "cc/test/fake_context_provider.h"
+
+#include "base/bind.h"
+#include "cc/test/test_web_graphics_context_3d.h"
+
+namespace cc {
+
+// static
+scoped_refptr<FakeContextProvider> FakeContextProvider::
+    CreateForOtherThread() {
+  scoped_refptr<FakeContextProvider> provider = new FakeContextProvider();
+  if (!provider->InitializeOnMainThread())
+    return NULL;
+  return provider;
+}
+
+static scoped_ptr<TestWebGraphicsContext3D> ReturnContext(
+    scoped_ptr<TestWebGraphicsContext3D> context3d) {
+  return context3d.Pass();
+}
+
+// static
+scoped_refptr<FakeContextProvider> FakeContextProvider::CreateForOtherThread(
+    scoped_ptr<TestWebGraphicsContext3D> context3d) {
+  CreateCallback create_callback =
+      base::Bind(&ReturnContext, base::Passed(&context3d));
+  scoped_refptr<FakeContextProvider> provider =
+      new FakeContextProvider(create_callback);
+  if (!provider->InitializeOnMainThread())
+    return NULL;
+  return provider;
+}
+
+// static
+scoped_refptr<FakeContextProvider> FakeContextProvider::CreateForOtherThread(
+    const CreateCallback& create_callback) {
+  scoped_refptr<FakeContextProvider> provider =
+      new FakeContextProvider(create_callback);
+  if (!provider->InitializeOnMainThread())
+    return NULL;
+  return provider;
+}
+
+FakeContextProvider::FakeContextProvider()
+    : destroyed_(false) {
+}
+
+FakeContextProvider::FakeContextProvider(
+    const CreateCallback& create_callback)
+    : create_callback_(create_callback),
+      bound_(false),
+      destroyed_(false) {
+}
+
+FakeContextProvider::~FakeContextProvider() {}
+
+bool FakeContextProvider::InitializeOnMainThread() {
+  DCHECK(!context3d_);
+
+  if (create_callback_.is_null())
+    context3d_ = TestWebGraphicsContext3D::Create().Pass();
+  else
+    context3d_ = create_callback_.Run();
+  return context3d_;
+}
+
+bool FakeContextProvider::BindToCurrentThread() {
+  bound_ = true;
+  if (!context3d_->makeContextCurrent()) {
+    base::AutoLock lock(destroyed_lock_);
+    destroyed_ = true;
+    return false;
+  }
+  return true;
+}
+
+WebKit::WebGraphicsContext3D* FakeContextProvider::Context3d() {
+  DCHECK(context3d_);
+  DCHECK(bound_);
+
+  return context3d_.get();
+}
+class GrContext* FakeContextProvider::GrContext() {
+  DCHECK(context3d_);
+  DCHECK(bound_);
+
+  // TODO(danakj): Make a fake GrContext.
+  return NULL;
+}
+
+void FakeContextProvider::VerifyContexts() {
+  DCHECK(context3d_);
+  DCHECK(bound_);
+
+  if (context3d_->isContextLost()) {
+    base::AutoLock lock(destroyed_lock_);
+    destroyed_ = true;
+  }
+}
+
+bool FakeContextProvider::DestroyedOnMainThread() {
+  base::AutoLock lock(destroyed_lock_);
+  return destroyed_;
+}
+
+}  // namespace cc