playground_impl_mtl.h

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// Copyright 2013 The Flutter 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 FLUTTER_IMPELLER_PLAYGROUND_BACKEND_METAL_PLAYGROUND_IMPL_MTL_H_
#define FLUTTER_IMPELLER_PLAYGROUND_BACKEND_METAL_PLAYGROUND_IMPL_MTL_H_
 
#include <memory>
 
#include "flutter/fml/concurrent_message_loop.h"
#include "flutter/fml/synchronization/sync_switch.h"
#include "impeller/playground/playground_impl.h"
#include "impeller/renderer/backend/metal/swapchain_transients_mtl.h"
 
namespace impeller {
 
// Forward declared to avoid objc in a C++ header.
class ContextMTL;
 
class PlaygroundImplMTL final : public PlaygroundImpl {
 public:
  explicit PlaygroundImplMTL(PlaygroundSwitches switches);
 
  ~PlaygroundImplMTL();
 
  fml::Status SetCapabilities(
      const std::shared_ptr<Capabilities>& capabilities) override;
 
 private:
  struct Data;
 
  static void DestroyWindowHandle(WindowHandle handle);
  using UniqueHandle = std::unique_ptr<void, decltype(&DestroyWindowHandle)>;
  UniqueHandle handle_;
 
  // To ensure that ObjC stuff doesn't leak into C++ TUs.
  std::unique_ptr<Data> data_;
  std::shared_ptr<ContextMTL> context_;
  std::shared_ptr<fml::ConcurrentMessageLoop> concurrent_loop_;
  std::shared_ptr<SwapchainTransientsMTL> swapchain_transients_;
  std::shared_ptr<fml::SyncSwitch> is_gpu_disabled_sync_switch_;
 
  // |PlaygroundImpl|
  std::shared_ptr<Context> GetContext() const override;
 
  // |PlaygroundImpl|
  WindowHandle GetWindowHandle() const override;
 
  // |PlaygroundImpl|
  std::unique_ptr<Surface> AcquireSurfaceFrame(
      std::shared_ptr<Context> context) override;
 
  // |PlaygroundImpl|
  void SetGPUDisabled(bool disabled) const override;
 
  PlaygroundImplMTL(const PlaygroundImplMTL&) = delete;
 
  PlaygroundImplMTL& operator=(const PlaygroundImplMTL&) = delete;
};
 
}  // namespace impeller
 
#endif  // FLUTTER_IMPELLER_PLAYGROUND_BACKEND_METAL_PLAYGROUND_IMPL_MTL_H_