WIP BSP Tree for 3D Layer Sorting

cc/output/bsp_walk_action.h

Index: cc/output/bsp_walk_action.h
diff --git a/cc/output/bsp_walk_action.h b/cc/output/bsp_walk_action.h
new file mode 100644
index 0000000000000000000000000000000000000000..86a085b8a19c1ba6c00d55fb6eadecdd1d60f98d
--- /dev/null
+++ b/cc/output/bsp_walk_action.h
@@ -0,0 +1,32 @@
+// Copyright 2013 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.
+
+#ifndef CC_OUTPUT_BSP_WALK_ACTION_H_
+#define CC_OUTPUT_BSP_WALK_ACTION_H_
+
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "cc/output/direct_renderer.h"
+#include "cc/quads/draw_polygon.h"
+
+namespace cc {
+
+class CC_EXPORT BspWalkAction {
+ public:
+  virtual void operator()(DrawPolygon* item) = 0;
+};
+
+class CC_EXPORT BspWalkActionToVector : public BspWalkAction {

[enne (OOO), 2014/07/29 21:35:41]

Can you add a comment saying that the BspTree owns the DrawPolygons that get
returned in its list and so its lifetime must be preserved while the vector of
DrawPolygons is being used?

[troyhildebrandt, 2014/07/29 23:07:55]

Done.

+ public:
+  explicit BspWalkActionToVector(std::vector<DrawPolygon*>* in_list);
+  virtual void operator()(DrawPolygon* item) OVERRIDE;
+
+ private:
+  std::vector<DrawPolygon*>* list_;
+};
+
+}  // namespace cc
+
+#endif  // CC_OUTPUT_BSP_WALK_ACTION_H_