From b09b35cc0648ca577642a7a44d79b0f794ccbbad Mon Sep 17 00:00:00 2001
From: Chinmay Garde <chinmaygarde@gmail.com>
Date: Mon, 7 Nov 2016 15:29:03 -0800
Subject: [PATCH] Tell the raster cache when checkerboarding preferences have
 been updated. (flutter/engine#3205)

---
 engine/src/flutter/flow/layers/layer_tree.cc | 4 +++-
 engine/src/flutter/flow/layers/layer_tree.h  | 4 ----
 engine/src/flutter/flow/raster_cache.cc      | 6 +-----
 3 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/engine/src/flutter/flow/layers/layer_tree.cc b/engine/src/flutter/flow/layers/layer_tree.cc
index 9ed4b07dfdc..a9aa44eb158 100644
--- a/engine/src/flutter/flow/layers/layer_tree.cc
+++ b/engine/src/flutter/flow/layers/layer_tree.cc
@@ -13,7 +13,7 @@ LayerTree::LayerTree()
     : frame_size_{},
       scene_version_(0),
       rasterizer_tracing_threshold_(0),
-      checkerboard_raster_cache_images_(0) {}
+      checkerboard_raster_cache_images_(false) {}
 
 LayerTree::~LayerTree() {}
 
@@ -21,6 +21,8 @@ void LayerTree::Raster(CompositorContext::ScopedFrame& frame,
                        bool ignore_raster_cache) {
   {
     TRACE_EVENT0("flutter", "LayerTree::Preroll");
+    frame.context().raster_cache().SetCheckboardCacheImages(
+        checkerboard_raster_cache_images_);
     Layer::PrerollContext context = {
         ignore_raster_cache ? nullptr : &frame.context().raster_cache(),
         frame.gr_context(), SkRect::MakeEmpty(),
diff --git a/engine/src/flutter/flow/layers/layer_tree.h b/engine/src/flutter/flow/layers/layer_tree.h
index d8afe4bcc3a..e3de6a96e16 100644
--- a/engine/src/flutter/flow/layers/layer_tree.h
+++ b/engine/src/flutter/flow/layers/layer_tree.h
@@ -70,10 +70,6 @@ class LayerTree {
     checkerboard_raster_cache_images_ = checkerboard;
   }
 
-  bool checkerboard_raster_cache_images() const {
-    return checkerboard_raster_cache_images_;
-  }
-
  private:
   SkISize frame_size_;  // Physical pixels.
   uint32_t scene_version_;
diff --git a/engine/src/flutter/flow/raster_cache.cc b/engine/src/flutter/flow/raster_cache.cc
index b010378301c..2ff8e7d02f5 100644
--- a/engine/src/flutter/flow/raster_cache.cc
+++ b/engine/src/flutter/flow/raster_cache.cc
@@ -156,11 +156,7 @@ void RasterCache::SetCheckboardCacheImages(bool checkerboard) {
 
   // Clear all existing entries so previously rasterized items (with or without
   // a checkerboard) will be refreshed in subsequent passes.
-  blink::Threads::Gpu()->PostTask([self = weak_factory_.GetWeakPtr()]() {
-    if (self) {
-      self->Clear();
-    }
-  });
+  Clear();
 }
 
 }  // namespace flow