[Android WebView] Implement Ubercomp for Render Thread support

android_webview/native/aw_contents.cc

 // Copyright 2012 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 "android_webview/native/aw_contents.h"
 
 #include <limits>
 
 #include "android_webview/browser/aw_browser_context.h"
 #include "android_webview/browser/aw_browser_main_parts.h"
 #include "android_webview/browser/aw_resource_context.h"
 #include "android_webview/browser/browser_view_renderer.h"
 #include "android_webview/browser/deferred_gpu_command_service.h"
 #include "android_webview/browser/gpu_memory_buffer_factory_impl.h"
 #include "android_webview/browser/hardware_renderer.h"
+#include "android_webview/browser/hardware_renderer_legacy.h"
 #include "android_webview/browser/net_disk_cache_remover.h"
 #include "android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.h"
 #include "android_webview/browser/scoped_app_gl_state_restore.h"
 #include "android_webview/common/aw_hit_test_data.h"
+#include "android_webview/common/aw_switches.h"
 #include "android_webview/common/devtools_instrumentation.h"
 #include "android_webview/native/aw_autofill_manager_delegate.h"
 #include "android_webview/native/aw_browser_dependency_factory.h"
 #include "android_webview/native/aw_contents_client_bridge.h"
 #include "android_webview/native/aw_contents_io_thread_client_impl.h"
 #include "android_webview/native/aw_pdf_exporter.h"
 #include "android_webview/native/aw_picture.h"
 #include "android_webview/native/aw_web_contents_delegate.h"
 #include "android_webview/native/java_browser_view_renderer_helper.h"
 #include "android_webview/native/permission/aw_permission_request.h"
@@ skipping 288 matching lines @@
 jint GetNativeInstanceCount(JNIEnv* env, jclass) {
   return base::subtle::NoBarrier_Load(&g_instance_count);
 }
 
 jlong AwContents::GetAwDrawGLViewContext(JNIEnv* env, jobject obj) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   return reinterpret_cast<intptr_t>(this);
 }
 
 void AwContents::DrawGL(AwDrawGLInfo* draw_info) {
-  GLViewRendererManager::GetInstance()->DidDrawGL(renderer_manager_key_);
+  {
+    GLViewRendererManager* manager = GLViewRendererManager::GetInstance();
+    base::AutoLock lock(render_thread_lock_);
+    if (renderer_manager_key_ != manager->NullKey()) {
+      manager->DidDrawGL(renderer_manager_key_);
+    }
+  }
 
   ScopedAppGLStateRestore state_restore(
       draw_info->mode == AwDrawGLInfo::kModeDraw
           ? ScopedAppGLStateRestore::MODE_DRAW
           : ScopedAppGLStateRestore::MODE_RESOURCE_MANAGEMENT);
   ScopedAllowGL allow_gl;
 
   for (base::Closure c = shared_renderer_state_.PopFrontClosure(); !c.is_null();
        c = shared_renderer_state_.PopFrontClosure()) {
     c.Run();
   }
 
-  if (!hardware_renderer_)
+  if (draw_info->mode != AwDrawGLInfo::kModeDraw)
     return;
 
-  // TODO(boliu): Make this a task as well.
-  DrawGLResult result;
+  if (!hardware_renderer_) {
+    DCHECK(!shared_renderer_state_.IsHardwareInitialized());
+    if (switches::UbercompEnabled()) {
+      hardware_renderer_.reset(new HardwareRenderer(&shared_renderer_state_));
+    } else {
+      hardware_renderer_.reset(
+          new HardwareRendererLegacy(&shared_renderer_state_));
+    }
+    shared_renderer_state_.SetHardwareInitialized(true);
+  }
+
+  scoped_ptr<DrawGLResult> result(new DrawGLResult);
   if (hardware_renderer_->DrawGL(state_restore.stencil_enabled(),
                                  state_restore.framebuffer_binding_ext(),
                                  draw_info,
-                                 &result)) {
-    browser_view_renderer_.DidDrawGL(result);
+                                 result.get())) {
+    if (switches::UbercompEnabled()) {
+      browser_view_renderer_.DidDrawDelegated(result.Pass());
+    } else {
+      browser_view_renderer_.DidDrawGL(result.Pass());
+    }
   }
 }
 
 namespace {
 void DocumentHasImagesCallback(const ScopedJavaGlobalRef<jobject>& message,
                                bool has_images) {
   Java_AwContents_onDocumentHasImagesResponse(AttachCurrentThread(),
                                               has_images,
                                               message.obj());
 }
@@ skipping 413 matching lines @@
   }
 }
 
 void AwContents::OnAttachedToWindow(JNIEnv* env, jobject obj, int w, int h) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   browser_view_renderer_.OnAttachedToWindow(w, h);
 }
 
 void AwContents::InitializeHardwareDrawIfNeeded() {
   GLViewRendererManager* manager = GLViewRendererManager::GetInstance();
+
+  base::AutoLock lock(render_thread_lock_);
   if (renderer_manager_key_ == manager->NullKey()) {
-    // Add task but don't schedule it. It will run when DrawGL is called for
-    // the first time.
-    shared_renderer_state_.AppendClosure(
-        base::Bind(&AwContents::InitializeHardwareDrawOnRenderThread,
-                   base::Unretained(this)));
     renderer_manager_key_ = manager->PushBack(&shared_renderer_state_);
     DeferredGpuCommandService::SetInstance();
   }
 }
 
-void AwContents::InitializeHardwareDrawOnRenderThread() {
-  DCHECK(!hardware_renderer_);
-  DCHECK(!shared_renderer_state_.IsHardwareInitialized());
-  hardware_renderer_.reset(new HardwareRenderer(&shared_renderer_state_));
-  shared_renderer_state_.SetHardwareInitialized(true);
-}
-
 void AwContents::OnDetachedFromWindow(JNIEnv* env, jobject obj) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   shared_renderer_state_.ClearClosureQueue();
   shared_renderer_state_.AppendClosure(base::Bind(
       &AwContents::ReleaseHardwareDrawOnRenderThread, base::Unretained(this)));
   bool draw_functor_succeeded = RequestDrawGL(NULL, true);
   if (!draw_functor_succeeded &&
       shared_renderer_state_.IsHardwareInitialized()) {
     LOG(ERROR) << "Unable to free GL resources. Has the Window leaked?";
     // Calling release on wrong thread intentionally.
     AwDrawGLInfo info;
     info.mode = AwDrawGLInfo::kModeProcess;
     DrawGL(&info);
   } else {
     shared_renderer_state_.ClearClosureQueue();
   }
 
+  DCHECK(!hardware_renderer_);
   browser_view_renderer_.OnDetachedFromWindow();
 
   GLViewRendererManager* manager = GLViewRendererManager::GetInstance();
-  if (renderer_manager_key_ != manager->NullKey()) {
-    manager->Remove(renderer_manager_key_);
-    renderer_manager_key_ = manager->NullKey();
+
+  {
+    base::AutoLock lock(render_thread_lock_);
+    if (renderer_manager_key_ != manager->NullKey()) {
+      manager->Remove(renderer_manager_key_);
+      renderer_manager_key_ = manager->NullKey();
+    }
   }
+
+  // Flush any invoke functors that's caused by OnDetachedFromWindow.
+  RequestDrawGL(NULL, true);
 }
 
 void AwContents::ReleaseHardwareDrawOnRenderThread() {
   // No point in running any other commands if we released hardware already.
   shared_renderer_state_.ClearClosureQueue();
   if (!shared_renderer_state_.IsHardwareInitialized())
     return;
 
   hardware_renderer_.reset();
   shared_renderer_state_.SetHardwareInitialized(false);
@@ skipping 245 matching lines @@
     return;
 
   browser_view_renderer_.TrimMemory(level, visible);
 }
 
 void SetShouldDownloadFavicons(JNIEnv* env, jclass jclazz) {
   g_should_download_favicons = true;
 }
 
 }  // namespace android_webview