// 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_GPU_GPU_SURFACE_METAL_SKIA_H_

#define FLUTTER_SHELL_GPU_GPU_SURFACE_METAL_SKIA_H_

#if !SLIMPELLER

#include "flutter/flow/surface.h"

#include "flutter/fml/macros.h"

#include "flutter/shell/gpu/gpu_surface_metal_delegate.h"

#include "third_party/skia/include/gpu/ganesh/GrDirectContext.h"

namespace flutter {

class SK_API_AVAILABLE_CA_METAL_LAYER GPUSurfaceMetalSkia : public Surface {

public:

GPUSurfaceMetalSkia(GPUSurfaceMetalDelegate* delegate,

sk_sp<GrDirectContext> context,

bool render_to_surface = true);

// |Surface|

~GPUSurfaceMetalSkia();

// |Surface|

bool IsValid() override;

private:

const GPUSurfaceMetalDelegate* delegate_;

const MTLRenderTargetType render_target_type_;

sk_sp<GrDirectContext> context_;

GrDirectContext* precompiled_sksl_context_ = nullptr;

// TODO(38466): Refactor GPU surface APIs take into account the fact that an

// external view embedder may want to render to the root surface. This is a

// hack to make avoid allocating resources for the root surface when an

// external view embedder is present.

bool render_to_surface_ = true;

bool disable_partial_repaint_ = false;

// Accumulated damage for each framebuffer; Key is address of underlying

// MTLTexture for each drawable

std::map<void*, DlIRect> damage_;

// |Surface|

std::unique_ptr<SurfaceFrame> AcquireFrame(const DlISize& size) override;

// |Surface|

DlMatrix GetRootTransformation() const override;

// |Surface|

GrDirectContext* GetContext() override;

// |Surface|

std::unique_ptr<GLContextResult> MakeRenderContextCurrent() override;

// |Surface|

bool AllowsDrawingWhenGpuDisabled() const override;

std::unique_ptr<SurfaceFrame> AcquireFrameFromCAMetalLayer(

const DlISize& frame_info);

std::unique_ptr<SurfaceFrame> AcquireFrameFromMTLTexture(

const DlISize& frame_info);

void PrecompileKnownSkSLsIfNecessary();

FML_DISALLOW_COPY_AND_ASSIGN(GPUSurfaceMetalSkia);

};

} // namespace flutter

#endif // !SLIMPELLER

#endif // FLUTTER_SHELL_GPU_GPU_SURFACE_METAL_SKIA_H_