playground_impl_gles.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_GLES_PLAYGROUND_IMPL_GLES_H_
#define FLUTTER_IMPELLER_PLAYGROUND_BACKEND_GLES_PLAYGROUND_IMPL_GLES_H_
 
#include "impeller/playground/playground_impl.h"
 
#include "impeller/renderer/backend/gles/context_gles.h"
 
struct GLFWwindow;
 
namespace impeller {
 
class PlaygroundImplGLES final : public PlaygroundImpl {
 public:
  struct ShareableContext;
 
  explicit PlaygroundImplGLES(const PlaygroundSwitches& switches);
 
  ~PlaygroundImplGLES();
 
  fml::Status SetCapabilities(
      const std::shared_ptr<Capabilities>& capabilities) override;
 
  static void OnTearDownTestEnvironment();
 
 private:
  class ReactorWorker;
 
  static void DestroyWindowHandle(WindowHandle handle);
  using UniqueHandle =
      std::unique_ptr<GLFWwindow, decltype(&DestroyWindowHandle)>;
  UniqueHandle handle_;
  const bool use_angle_;
  void* angle_glesv2_;
  std::shared_ptr<Context> context_;
  std::unique_ptr<ShareableContext> unique_context_;
 
  // Return the best ShareableContext holder to store the context for
  // this Playground. Note that this might be either the instance-specific
  // |unique_context_| field or it might be one of the globally shared
  // contexts fields used for most of the tests.
  std::unique_ptr<PlaygroundImplGLES::ShareableContext>& GetShareableContext();
 
  // |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|
  Playground::GLProcAddressResolver CreateGLProcAddressResolver()
      const override;
 
  static Playground::GLProcAddressResolver CreateGLProcAddressResolver(
      const PlaygroundSwitches& switches);
 
  static GLFWwindow* CreateGLWindow(const PlaygroundSwitches& switches,
                                    GLFWwindow* share_window);
 
  static std::unique_ptr<ShareableContext> MakeShareableContext(
      const PlaygroundSwitches& switches);
 
  // These store longer-term shared contexts that are shared between
  // tests in the playground suite while the flags that affect the
  // construction of the context remain consistent.
  static std::unique_ptr<ShareableContext> shared_context_msaa_;
  static std::unique_ptr<ShareableContext> shared_context_sdf_;
 
  RuntimeStageBackend GetRuntimeStageBackend() const override;
 
  PlaygroundImplGLES(const PlaygroundImplGLES&) = delete;
 
  PlaygroundImplGLES& operator=(const PlaygroundImplGLES&) = delete;
};
 
}  // namespace impeller
 
#endif  // FLUTTER_IMPELLER_PLAYGROUND_BACKEND_GLES_PLAYGROUND_IMPL_GLES_H_