cc: Don't make tiles for mask layers that are too big for a texture.

cc/layers/picture_layer.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 "cc/layers/picture_layer.h"
 
 #include "base/auto_reset.h"
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/picture_layer_impl.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "third_party/skia/include/core/SkPictureRecorder.h"
 #include "ui/gfx/rect_conversions.h"
 
 namespace cc {
 
 scoped_refptr<PictureLayer> PictureLayer::Create(ContentLayerClient* client) {
   return make_scoped_refptr(new PictureLayer(client));
 }
 
 PictureLayer::PictureLayer(ContentLayerClient* client)
     : client_(client),
       pile_(make_scoped_refptr(new PicturePile())),
       instrumentation_object_tracker_(id()),
-      is_mask_(false),
       update_source_frame_number_(-1),
       can_use_lcd_text_last_frame_(can_use_lcd_text()) {
 }
 
 PictureLayer::~PictureLayer() {
 }
 
 scoped_ptr<LayerImpl> PictureLayer::CreateLayerImpl(LayerTreeImpl* tree_impl) {
   return PictureLayerImpl::Create(tree_impl, id()).PassAs<LayerImpl>();
 }
 
 void PictureLayer::PushPropertiesTo(LayerImpl* base_layer) {
   Layer::PushPropertiesTo(base_layer);
   PictureLayerImpl* layer_impl = static_cast<PictureLayerImpl*>(base_layer);
 
   if (layer_impl->bounds().IsEmpty()) {
     // Update may not get called for an empty layer, so resize here instead.
     // Using layer_impl because either bounds() or paint_properties().bounds
     // may disagree and either one could have been pushed to layer_impl.
     pile_->SetEmptyBounds();
   } else if (update_source_frame_number_ ==
              layer_tree_host()->source_frame_number()) {
     // TODO(ernstm): This DCHECK is only valid as long as the pile's tiling_rect
     // is identical to the layer_rect.
     // If update called, then pile size must match bounds pushed to impl layer.
     DCHECK_EQ(layer_impl->bounds().ToString(), pile_->tiling_size().ToString());
   }
 
-  layer_impl->SetIsMask(is_mask_);
-
   // Unlike other properties, invalidation must always be set on layer_impl.
   // See PictureLayerImpl::PushPropertiesTo for more details.
   layer_impl->invalidation_.Clear();
   layer_impl->invalidation_.Swap(&pile_invalidation_);
   layer_impl->pile_ = PicturePileImpl::CreateFromOther(pile_.get());
 }
 
 void PictureLayer::SetLayerTreeHost(LayerTreeHost* host) {
   Layer::SetLayerTreeHost(host);
   if (host) {
@@ skipping 77 matching lines @@
   } else {
     // If this invalidation did not affect the pile, then it can be cleared as
     // an optimization.
     pile_invalidation_.Clear();
   }
 
   return updated;
 }
 
 void PictureLayer::SetIsMask(bool is_mask) {
-  is_mask_ = is_mask;
+  pile_->set_is_mask(is_mask);
 }
 
 Picture::RecordingMode PictureLayer::RecordingMode() const {
   switch (layer_tree_host()->settings().recording_mode) {
     case LayerTreeSettings::RecordNormally:
       return Picture::RECORD_NORMALLY;
     case LayerTreeSettings::RecordWithSkRecord:
       return Picture::RECORD_WITH_SKRECORD;
   }
   NOTREACHED();
@@ skipping 45 matching lines @@
 
 bool PictureLayer::HasDrawableContent() const {
   return client_ && Layer::HasDrawableContent();
 }
 
 void PictureLayer::RunMicroBenchmark(MicroBenchmark* benchmark) {
   benchmark->RunOnLayer(this);
 }
 
 }  // namespace cc