Provide shared context to Platform API in renderer.

content/renderer/render_thread_impl.cc

 // Copyright (c) 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 "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
 
 #include "base/allocator/allocator_extension.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
+#include "base/memory/weak_ptr.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/stats_table.h"
 #include "base/path_service.h"
 #include "base/shared_memory.h"
 #include "base/string16.h"
 #include "base/string_number_conversions.h"  // Temporary
 #include "base/threading/thread_local.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
@@ skipping 64 matching lines @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPopupMenu.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebRuntimeFeatures.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebScriptController.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityPolicy.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSharedWorkerRepository.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 #include "ui/base/layout.h"
 #include "ui/base/ui_base_switches.h"
 #include "v8/include/v8.h"
 #include "webkit/glue/webkit_glue.h"
+#include "webkit/gpu/webgraphicscontext3d_in_process_impl.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <objbase.h>
 #include "base/win/scoped_com_initializer.h"
 #else
 // TODO(port)
 #include "base/memory/scoped_handle.h"
 #include "content/common/np_channel_base.h"
 #endif
@@ skipping 163 matching lines @@
     v8::V8::SetCreateHistogramFunction(CreateHistogram);
   }
 }
 
 RenderThreadImpl* RenderThreadImpl::current() {
   return lazy_tls.Pointer()->Get();
 }
 
 // When we run plugins in process, we actually run them on the render thread,
 // which means that we need to make the render thread pump UI events.
-RenderThreadImpl::RenderThreadImpl() {
+RenderThreadImpl::RenderThreadImpl()
+    : shared_context_main_thread_(this),

[piman, 2013/02/11 19:15:30]

nit: you'll need the ALLOW_THIS_IN_INITIALIZER_LIST wrapper for MSVC. (here and
below)

[danakj, 2013/02/11 20:53:36]

Done.

+      shared_context_compositor_thread_(this) {
   Init();
 }
 
 RenderThreadImpl::RenderThreadImpl(const std::string& channel_name)
-    : ChildThread(channel_name) {
+    : ChildThread(channel_name),
+      shared_context_main_thread_(this),
+      shared_context_compositor_thread_(this) {
   Init();
 }
 
 void RenderThreadImpl::Init() {
   TRACE_EVENT_BEGIN_ETW("RenderThreadImpl::Init", 0, "");
 
   v8::V8::SetCounterFunction(base::StatsTable::FindLocation);
   v8::V8::SetCreateHistogramFunction(CreateHistogram);
   v8::V8::SetAddHistogramSampleFunction(AddHistogramSample);
 
@@ skipping 817 matching lines @@
   gpu_channel_ = new GpuChannelHost(this, 0, client_id);
   gpu_channel_->set_gpu_info(gpu_info);
   GetContentClient()->SetGpuInfo(gpu_info);
 
   // Connect to the GPU process if a channel name was received.
   gpu_channel_->Connect(channel_handle);
 
   return GetGpuChannel();
 }
 
+WebKit::WebGraphicsContext3D* RenderThreadImpl::
+     OffscreenContext3dForMainThread() {
+  DCHECK(IsMainThread());
+  return shared_context_main_thread_.Context3d();
+}
+WebKit::WebGraphicsContext3D* RenderThreadImpl::
+    OffscreenContext3dForCompositorThread() {
+  DCHECK(IsMainThread());
+  return shared_context_compositor_thread_.Context3d();
+}
+
+GrContext* RenderThreadImpl::OffscreenGrContextForMainThread() {
+  DCHECK(IsMainThread());
+  return shared_context_main_thread_.GrContext();
+}
+
+GrContext* RenderThreadImpl::OffscreenGrContextForCompositorThread() {
+  DCHECK(IsMainThread());
+  return shared_context_compositor_thread_.GrContext();
+}
+
+WebKit::WebGraphicsContext3D* RenderThreadImpl::CreateOffscreenContext() {
+  WebKit::WebGraphicsContext3D::Attributes attributes;
+  attributes.shareResources = true;
+  attributes.depth = false;
+  attributes.stencil = false;
+  attributes.antialias = false;
+  attributes.noAutomaticFlushes = true;
+
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kInProcessWebGL)) {
+    return webkit::gpu::WebGraphicsContext3DInProcessImpl::CreateForWebView(
+            attributes, false);
+  }
+
+  GURL url("chrome://gpu/RenderThreadImpl::CreateOffscreenContext");
+  scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context(

[piman, 2013/02/11 19:15:30]

use WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext ?

[danakj, 2013/02/11 20:53:36]

Oh, nice. Done.

+      new WebGraphicsContext3DCommandBufferImpl(
+          0,
+          url,
+          this,
+          base::WeakPtr<WebGraphicsContext3DSwapBuffersClient>()));
+  if (!context->Initialize(
+        attributes,
+        false,
+        CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE))
+    return NULL;
+  return context.release();
+}
+
 WebKit::WebMediaStreamCenter* RenderThreadImpl::CreateMediaStreamCenter(
     WebKit::WebMediaStreamCenterClient* client) {
 #if defined(OS_ANDROID)
   if (!CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableWebRTC))
     return NULL;
 #endif
 
 #if defined(ENABLE_WEBRTC)
   if (!media_stream_center_)
@@ skipping 59 matching lines @@
 
 void RenderThreadImpl::SetFlingCurveParameters(
     const std::vector<float>& new_touchpad,
     const std::vector<float>& new_touchscreen) {
   webkit_platform_support_->SetFlingCurveParameters(new_touchpad,
                                                     new_touchscreen);
 
 }
 
 }  // namespace content