Flutter Impeller
device_buffer_vk.h
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef FLUTTER_IMPELLER_RENDERER_BACKEND_VULKAN_DEVICE_BUFFER_VK_H_
6 #define FLUTTER_IMPELLER_RENDERER_BACKEND_VULKAN_DEVICE_BUFFER_VK_H_
7 
8 #include <memory>
9 
14 
15 namespace impeller {
16 
17 class DeviceBufferVK final : public DeviceBuffer,
18  public BackendCast<DeviceBufferVK, DeviceBuffer> {
19  public:
21  std::weak_ptr<Context> context,
22  UniqueBufferVMA buffer,
23  VmaAllocationInfo info,
24  bool is_host_coherent);
25 
26  // |DeviceBuffer|
27  ~DeviceBufferVK() override;
28 
29  vk::Buffer GetBuffer() const;
30 
31  // Visible for testing.
32  bool IsHostCoherent() const;
33 
34  private:
35  friend class AllocatorVK;
36 
37  struct BufferResource {
38  UniqueBufferVMA buffer;
39  VmaAllocationInfo info = {};
40 
41  BufferResource() = default;
42 
43  BufferResource(UniqueBufferVMA p_buffer, VmaAllocationInfo p_info)
44  : buffer(std::move(p_buffer)), info(p_info) {}
45 
47  std::swap(o.buffer, buffer);
48  std::swap(o.info, info);
49  }
50 
51  BufferResource(const BufferResource&) = delete;
52 
53  BufferResource& operator=(const BufferResource&) = delete;
54  };
55 
56  std::weak_ptr<Context> context_;
57  UniqueResourceVKT<BufferResource> resource_;
58  bool is_host_coherent_ = false;
59 
60  // |DeviceBuffer|
61  uint8_t* OnGetContents() const override;
62 
63  // |DeviceBuffer|
64  bool OnCopyHostBuffer(const uint8_t* source,
65  Range source_range,
66  size_t offset) override;
67 
68  // |DeviceBuffer|
69  bool SetLabel(std::string_view label) override;
70 
71  // |DeviceBuffer|
72  bool SetLabel(std::string_view label, Range range) override;
73 
74  // |DeviceBuffer|
75  void Flush(std::optional<Range> range) const override;
76 
77  // |DeviceBuffer|
78  void Invalidate(std::optional<Range> range) const override;
79 
80  DeviceBufferVK(const DeviceBufferVK&) = delete;
81 
82  DeviceBufferVK& operator=(const DeviceBufferVK&) = delete;
83 };
84 
85 } // namespace impeller
86 
87 #endif // FLUTTER_IMPELLER_RENDERER_BACKEND_VULKAN_DEVICE_BUFFER_VK_H_
DeviceBufferVK(DeviceBufferDescriptor desc, std::weak_ptr< Context > context, UniqueBufferVMA buffer, VmaAllocationInfo info, bool is_host_coherent)
vk::Buffer GetBuffer() const
Resource< BufferView > BufferResource
Definition: command.h:54
fml::UniqueObject< BufferVMA, BufferVMATraits > UniqueBufferVMA
Definition: vma.h:98
Definition: comparable.h:95