test_metal_context.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_TESTING_TEST_METAL_CONTEXT_H_
#define FLUTTER_TESTING_TEST_METAL_CONTEXT_H_
 
#include <map>
#include <memory>
#include <mutex>
 
#include <Metal/Metal.h>
 
#include "flutter/display_list/geometry/dl_geometry_types.h"
#include "third_party/skia/include/gpu/ganesh/GrDirectContext.h"
#include "third_party/skia/include/ports/SkCFObject.h"
 
namespace flutter::testing {
 
struct MetalObjCFields;
 
class TestMetalContext {
 public:
  struct TextureInfo {
    int64_t texture_id;
    void* texture;
  };
 
  TestMetalContext();
 
  ~TestMetalContext();
 
  id<MTLDevice> GetMetalDevice() const;
 
  id<MTLCommandQueue> GetMetalCommandQueue() const;
 
  sk_sp<GrDirectContext> GetSkiaContext() const;
 
  /// Returns texture_id = -1 when texture creation fails.
  TextureInfo CreateMetalTexture(const DlISize& size);
 
  bool Present(int64_t texture_id);
 
  TextureInfo GetTextureInfo(int64_t texture_id);
 
 private:
  id<MTLDevice> device_;
  id<MTLCommandQueue> command_queue_;
  sk_sp<GrDirectContext> skia_context_;
  std::mutex textures_mutex_;
  int64_t texture_id_ctr_ = 1;                 // guarded by textures_mutex
  std::map<int64_t, sk_cfp<void*>> textures_;  // guarded by textures_mutex
};
 
}  // namespace flutter::testing
 
#endif  // FLUTTER_TESTING_TEST_METAL_CONTEXT_H_