cc: Redraw incomplete frames when new texture uploads finish

cc/single_thread_proxy.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/single_thread_proxy.h"
 
+#include "base/auto_reset.h"
 #include "base/debug/trace_event.h"
 #include "cc/draw_quad.h"
 #include "cc/layer_tree_host.h"
 #include "cc/output_surface.h"
 #include "cc/prioritized_resource_manager.h"
 #include "cc/resource_update_controller.h"
 #include "cc/thread.h"
 
 namespace cc {
 
 scoped_ptr<Proxy> SingleThreadProxy::create(LayerTreeHost* layerTreeHost)
 {
     return make_scoped_ptr(new SingleThreadProxy(layerTreeHost)).PassAs<Proxy>();
 }
 
 SingleThreadProxy::SingleThreadProxy(LayerTreeHost* layerTreeHost)
     : Proxy(scoped_ptr<Thread>(NULL))
     , m_layerTreeHost(layerTreeHost)
     , m_outputSurfaceLost(false)
     , m_rendererInitialized(false)
     , m_nextFrameIsNewlyCommittedFrame(false)
+    , m_insideDraw(false)
     , m_totalCommitCount(0)
 {
     TRACE_EVENT0("cc", "SingleThreadProxy::SingleThreadProxy");
     DCHECK(Proxy::isMainThread());
     DCHECK(layerTreeHost);
 
     // Impl-side painting not supported without threaded compositing
     DCHECK(!layerTreeHost->settings().implSidePainting);
 }
 
@@ skipping 224 matching lines @@
         m_layerTreeHostImpl.reset();
     }
     m_layerTreeHost = 0;
 }
 
 void SingleThreadProxy::setNeedsRedrawOnImplThread()
 {
     m_layerTreeHost->scheduleComposite();
 }
 
+void SingleThreadProxy::didSwapUseIncompleteTextureOnImplThread()
+{
+    // implSidePainting only.
+    NOTREACHED();
+}
+
+void SingleThreadProxy::didUploadVisibleHighResolutionTileOnImplTread()
+{
+    // implSidePainting only.
+    NOTREACHED();
+}
+
 void SingleThreadProxy::setNeedsCommitOnImplThread()
 {
     m_layerTreeHost->scheduleComposite();
 }
 
 void SingleThreadProxy::setNeedsManageTilesOnImplThread()
 {
     m_layerTreeHost->scheduleComposite();
 }
 
@@ skipping 20 matching lines @@
         return;
     if (!m_layerTreeHost->contentsTextureManager())
         return;
 
     m_layerTreeHostImpl->sendManagedMemoryStats(
         m_layerTreeHost->contentsTextureManager()->memoryVisibleBytes(),
         m_layerTreeHost->contentsTextureManager()->memoryVisibleAndNearbyBytes(),
         m_layerTreeHost->contentsTextureManager()->memoryUseBytes());
 }
 
+bool SingleThreadProxy::isInsideDraw()
+{
+    return m_insideDraw;
+}
+
 // Called by the legacy scheduling path (e.g. where render_widget does the scheduling)
 void SingleThreadProxy::compositeImmediately()
 {
     if (commitAndComposite()) {
         m_layerTreeHostImpl->swapBuffers();
         didSwapFrame();
     }
 }
 
 void SingleThreadProxy::forceSerializeOnSwapBuffers()
@@ skipping 30 matching lines @@
     bool result = doComposite();
     m_layerTreeHost->didBeginFrame();
     return result;
 }
 
 bool SingleThreadProxy::doComposite()
 {
     DCHECK(!m_outputSurfaceLost);
     {
         DebugScopedSetImplThread impl(this);
+        base::AutoReset<bool> markInside(&m_insideDraw, true);
 
         if (!m_layerTreeHostImpl->visible())
             return false;
 
         m_layerTreeHostImpl->animate(base::TimeTicks::Now(), base::Time::Now());
 
         // We guard prepareToDraw() with canDraw() because it always returns a valid frame, so can only
         // be used when such a frame is possible. Since drawLayers() depends on the result of
         // prepareToDraw(), it is guarded on canDraw() as well.
         if (!m_layerTreeHostImpl->canDraw())
@@ skipping 28 matching lines @@
 }
 
 skia::RefPtr<SkPicture> SingleThreadProxy::capturePicture()
 {
     // Requires impl-side painting, which is only supported in threaded compositing.
     NOTREACHED();
     return skia::RefPtr<SkPicture>();
 }
 
 }  // namespace cc