Send compositor frame IPC with metadata.

cc/layer_tree_host_impl.cc

 // Copyright 2011 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/layer_tree_host_impl.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/debug/trace_event.h"
 #include "base/json/json_writer.h"
 #include "cc/append_quads_data.h"
+#include "cc/compositor_frame_metadata.h"
 #include "cc/damage_tracker.h"
 #include "cc/debug_rect_history.h"
 #include "cc/delay_based_time_source.h"
 #include "cc/delegating_renderer.h"
 #include "cc/frame_rate_counter.h"
 #include "cc/gl_renderer.h"
 #include "cc/heads_up_display_layer_impl.h"
 #include "cc/layer_iterator.h"
 #include "cc/layer_tree_host.h"
 #include "cc/layer_tree_host_common.h"
@@ skipping 838 matching lines @@
 
     // TODO(piman): We may need to do some validation on this ack before processing it.
     m_renderer->receiveCompositorFrameAck(ack);
 }
 
 void LayerTreeHostImpl::OnCanDrawStateChangedForTree(LayerTreeImpl*)
 {
     m_client->onCanDrawStateChanged(canDraw());
 }
 
+CompositorFrameMetadata LayerTreeHostImpl::makeCompositorFrameMetadata() const
+{
+    if (!rootScrollLayer())
+        return CompositorFrameMetadata();
+
+    CompositorFrameMetadata metadata;
+    metadata.root_scroll_offset = rootScrollLayer()->scrollOffset() + rootScrollLayer()->scrollDelta();
+    metadata.page_scale_factor = m_pinchZoomViewport.totalPageScaleFactor();
+    metadata.viewport_size = m_pinchZoomViewport.bounds().size();
+    metadata.root_layer_size = rootScrollLayer()->bounds();
+    metadata.min_page_scale_factor = m_pinchZoomViewport.minPageScaleFactor();
+    metadata.max_page_scale_factor = m_pinchZoomViewport.maxPageScaleFactor();
+    if (!m_settings.pageScalePinchZoomEnabled) {
+        metadata.root_scroll_offset.Scale(1 / m_pinchZoomViewport.pageScaleFactor());
+        metadata.root_layer_size.Scale(1 / m_pinchZoomViewport.pageScaleFactor());
+    }
+
+    return metadata;
+}
+
 void LayerTreeHostImpl::drawLayers(FrameData& frame)
 {
     TRACE_EVENT0("cc", "LayerTreeHostImpl::drawLayers");
     DCHECK(canDraw());
     DCHECK(!frame.renderPasses.empty());
 
     // FIXME: use the frame begin time from the overall compositor scheduler.
     // This value is currently inaccessible because it is up in Chromium's
     // RenderWidget.
     m_fpsCounter->markBeginningOfFrame(base::TimeTicks::Now());
@@ skipping 163 matching lines @@
     scoped_ptr<ResourceProvider> resourceProvider = ResourceProvider::create(outputSurface.get());
     if (!resourceProvider)
         return false;
 
     if (m_settings.implSidePainting)
       m_tileManager.reset(new TileManager(this, resourceProvider.get(), m_settings.numRasterThreads));
 
     if (outputSurface->Capabilities().has_parent_compositor)
         m_renderer = DelegatingRenderer::Create(this, resourceProvider.get());
     else if (outputSurface->Context3D())
-        m_renderer = GLRenderer::create(this, resourceProvider.get());
+        m_renderer = GLRenderer::create(this, outputSurface.get(), resourceProvider.get());
     else if (outputSurface->SoftwareDevice())
         m_renderer = SoftwareRenderer::create(this, resourceProvider.get(), outputSurface->SoftwareDevice());
     if (!m_renderer)
         return false;
 
     m_resourceProvider = resourceProvider.Pass();
     m_outputSurface = outputSurface.Pass();
 
     if (!m_visible)
         m_renderer->setVisible(m_visible);
@@ skipping 658 matching lines @@
     ScrollbarAnimationController* scrollbarController = layer->scrollbarAnimationController();
     double monotonicTime = (time - base::TimeTicks()).InSecondsF();
     if (scrollbarController && scrollbarController->animate(monotonicTime))
         m_client->setNeedsRedrawOnImplThread();
 
     for (size_t i = 0; i < layer->children().size(); ++i)
         animateScrollbarsRecursive(layer->children()[i], time);
 }
 
 }  // namespace cc