ios_surface_metal_impeller.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_SHELL_PLATFORM_DARWIN_IOS_IOS_SURFACE_METAL_IMPELLER_H_
#define FLUTTER_SHELL_PLATFORM_DARWIN_IOS_IOS_SURFACE_METAL_IMPELLER_H_
 
#include "flutter/fml/macros.h"
#include "flutter/shell/gpu/gpu_surface_metal_delegate.h"
#include "flutter/shell/platform/darwin/ios/ios_surface.h"
 
@class CAMetalLayer;
 
namespace impeller {
class Context;
}  // namespace impeller
 
namespace flutter {
 
class SK_API_AVAILABLE_CA_METAL_LAYER IOSSurfaceMetalImpeller final
    : public IOSSurface,
      public GPUSurfaceMetalDelegate {
 public:
  IOSSurfaceMetalImpeller(const fml::scoped_nsobject<CAMetalLayer>& layer,
                          const std::shared_ptr<IOSContext>& context);
 
  // |IOSSurface|
  ~IOSSurfaceMetalImpeller();
 
 private:
  fml::scoped_nsobject<CAMetalLayer> layer_;
  const std::shared_ptr<impeller::Context> impeller_context_;
  std::shared_ptr<impeller::AiksContext> aiks_context_;
  bool is_valid_ = false;
 
  // |IOSSurface|
  bool IsValid() const override;
 
  // |IOSSurface|
  void UpdateStorageSizeIfNecessary() override;
 
  // |IOSSurface|
  std::unique_ptr<Surface> CreateGPUSurface(GrDirectContext* gr_context) override;
 
  // |GPUSurfaceMetalDelegate|
  GPUCAMetalLayerHandle GetCAMetalLayer(const SkISize& frame_info) const override
      __attribute__((cf_audited_transfer));
 
  // |GPUSurfaceMetalDelegate|
  bool PresentDrawable(GrMTLHandle drawable) const override __attribute__((cf_audited_transfer));
 
  // |GPUSurfaceMetalDelegate|
  GPUMTLTextureInfo GetMTLTexture(const SkISize& frame_info) const override
      __attribute__((cf_audited_transfer));
 
  // |GPUSurfaceMetalDelegate|
  bool PresentTexture(GPUMTLTextureInfo texture) const override
      __attribute__((cf_audited_transfer));
 
  // |GPUSurfaceMetalDelegate|
  bool AllowsDrawingWhenGpuDisabled() const override;
 
  FML_DISALLOW_COPY_AND_ASSIGN(IOSSurfaceMetalImpeller);
};
 
}  // namespace flutter
 
#endif  // FLUTTER_SHELL_PLATFORM_DARWIN_IOS_IOS_SURFACE_METAL_IMPELLER_H_