Add mouse input forwarding to gpu service

content/browser/renderer_host/render_widget_host_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/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 #include <set>
 #include <utility>
 
@@ skipping 42 matching lines @@
 #include "content/common/view_messages.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_widget_host_iterator.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/result_codes.h"
 #include "content/public/common/web_preferences.h"
+#include "gpu/GLES2/gl2extchromium.h"
+#include "gpu/command_buffer/service/gpu_switches.h"
 #include "skia/ext/image_operations.h"
 #include "skia/ext/platform_canvas.h"
 #include "third_party/WebKit/public/web/WebCompositionUnderline.h"
 #include "ui/events/event.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 #include "ui/gfx/geometry/vector2d_conversions.h"
 #include "ui/gfx/size_conversions.h"
 #include "ui/gfx/skbitmap_operations.h"
 #include "ui/snapshot/snapshot.h"
 
@@ skipping 106 matching lines @@
       ignore_input_events_(false),
       input_method_active_(false),
       text_direction_updated_(false),
       text_direction_(blink::WebTextDirectionLeftToRight),
       text_direction_canceled_(false),
       suppress_next_char_events_(false),
       pending_mouse_lock_request_(false),
       allow_privileged_mouse_lock_(false),
       has_touch_handler_(false),
       last_input_number_(static_cast<int64>(GetProcess()->GetID()) << 32),
+      subscribe_uniform_enabled_(false),
       next_browser_snapshot_id_(1),
       browser_composite_latency_history_(kBrowserCompositeLatencyHistorySize),
       weak_factory_(this) {
   CHECK(delegate_);
   if (routing_id_ == MSG_ROUTING_NONE) {
     routing_id_ = process_->GetNextRoutingID();
     surface_id_ = GpuSurfaceTracker::Get()->AddSurfaceForRenderer(
         process_->GetID(),
         routing_id_);
   } else {
@@ skipping 28 matching lines @@
 
   RenderViewHostImpl* rvh = static_cast<RenderViewHostImpl*>(
       IsRenderView() ? RenderViewHost::From(this) : NULL);
   if (BrowserPluginGuest::IsGuest(rvh) ||
       !base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableHangMonitor)) {
     hang_monitor_timeout_.reset(new TimeoutMonitor(
         base::Bind(&RenderWidgetHostImpl::RendererIsUnresponsive,
                    weak_factory_.GetWeakPtr())));
   }
+
+  subscribe_uniform_enabled_ =

[jdduke (slow), 2014/12/02 20:56:42]

This lgtm, and was the only concern I had from the previous patch (I can't
really speak to any of the other files affected here).

+      base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableSubscribeUniformExtension);
 }
 
 RenderWidgetHostImpl::~RenderWidgetHostImpl() {
   if (view_weak_)
     view_weak_->RenderWidgetHostGone();
   SetView(NULL);
 
   GpuSurfaceTracker::Get()->RemoveSurface(surface_id_);
   surface_id_ = 0;
 
@@ skipping 645 matching lines @@
   }
 
   if (IgnoreInputEvents())
     return;
 
   if (touch_emulator_ && touch_emulator_->HandleMouseEvent(mouse_event))
     return;
 
   input_router_->SendMouseEvent(MouseEventWithLatencyInfo(mouse_event,
                                                           latency_info));
+
+  // Pass mouse state to gpu service if the subscribe uniform
+  // extension is enabled.
+  // TODO(orglofch): Only pass mouse information if one of the GL Contexts
+  // is subscribed to GL_MOUSE_POSITION_CHROMIUM
+  if (subscribe_uniform_enabled_) {
+    gpu::ValueState state;
+    state.int_value[0] = mouse_event.x;
+    state.int_value[1] = mouse_event.y;
+    GpuProcessHost::SendOnIO(
+      GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,

[jdduke (slow), 2014/12/02 20:56:42]

Nit: This should be 4-space indent for the args.

[orglofch, 2014/12/02 21:01:53]

Done.

+      CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH,
+      new GpuMsg_UpdateValueState(
+          process_->GetID(), GL_MOUSE_POSITION_CHROMIUM, state));
+  }
 }
 
 void RenderWidgetHostImpl::OnPointerEventActivate() {
 }
 
 void RenderWidgetHostImpl::ForwardWheelEvent(
     const WebMouseWheelEvent& wheel_event) {
   ForwardWheelEventWithLatencyInfo(wheel_event, ui::LatencyInfo());
 }
 
@@ skipping 1531 matching lines @@
 }
 #endif
 
 SkColorType RenderWidgetHostImpl::PreferredReadbackFormat() {
   if (view_)
     return view_->PreferredReadbackFormat();
   return kN32_SkColorType;
 }
 
 }  // namespace content