cc: Fix resource eviction with impl-side painting.
When evicting resources with impl-side painting we need wait until
the active tree is without evicted resources before we can draw.
This moves the ContentsTexturesPurged state from LTHI to the LTI
and makes LTHI::canDraw() return false when the active LTI has
ContentsTexturesPurged set. The result is no change in behavior
when we only have one tree, while with impl-side painting when
we have two trees, canDraw() will not return true until the new
tree without ContentsTexturesPurged set has been activated.
BUG=170157
Review URL: https://chromiumcodereview.appspot.com/11886091
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@177532 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/cc/layer_tree_impl.cc b/cc/layer_tree_impl.cc
index 769639a4..ad22981 100644
--- a/cc/layer_tree_impl.cc
+++ b/cc/layer_tree_impl.cc
@@ -19,7 +19,8 @@
, currently_scrolling_layer_(0)
, background_color_(0)
, has_transparent_background_(false)
- , scrolling_layer_id_from_previous_tree_(0) {
+ , scrolling_layer_id_from_previous_tree_(0)
+ , contents_textures_purged_(false) {
}
LayerTreeImpl::~LayerTreeImpl() {
@@ -215,6 +216,20 @@
DidBecomeActiveRecursive(RootLayer());
}
+bool LayerTreeImpl::ContentsTexturesPurged() const {
+ return contents_textures_purged_;
+}
+
+void LayerTreeImpl::SetContentsTexturesPurged() {
+ contents_textures_purged_ = true;
+ layer_tree_host_impl_->OnCanDrawStateChangedForTree(this);
+}
+
+void LayerTreeImpl::ResetContentsTexturesPurged() {
+ contents_textures_purged_ = false;
+ layer_tree_host_impl_->OnCanDrawStateChangedForTree(this);
+}
+
const LayerTreeSettings& LayerTreeImpl::settings() const {
return layer_tree_host_impl_->settings();
}
