Flutter Impeller
allocator_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_ALLOCATOR_VK_H_
6 #define FLUTTER_IMPELLER_RENDERER_BACKEND_VULKAN_ALLOCATOR_VK_H_
7 
8 #include "flutter/fml/macros.h"
9 #include "flutter/fml/memory/ref_ptr.h"
10 #include "impeller/core/allocator.h"
11 #include "impeller/renderer/backend/vulkan/context_vk.h"
12 #include "impeller/renderer/backend/vulkan/device_buffer_vk.h"
13 #include "impeller/renderer/backend/vulkan/device_holder.h"
14 #include "impeller/renderer/backend/vulkan/vk.h"
15 
16 #include <array>
17 #include <cstdint>
18 #include <memory>
19 
20 namespace impeller {
21 
22 class AllocatorVK final : public Allocator {
23  public:
24  // |Allocator|
25  ~AllocatorVK() override;
26 
27  private:
28  friend class ContextVK;
29 
30  UniqueAllocatorVMA allocator_;
31  UniquePoolVMA staging_buffer_pool_;
32  std::weak_ptr<Context> context_;
33  std::weak_ptr<DeviceHolder> device_holder_;
34  ISize max_texture_size_;
35  bool is_valid_ = false;
36  bool supports_memoryless_textures_ = false;
37  bool supports_framebuffer_fetch_ = false;
38  // TODO(jonahwilliams): figure out why CI can't create these buffer pools.
39  bool created_buffer_pool_ = true;
40  uint32_t frame_count_ = 0;
41  std::thread::id raster_thread_id_;
42 
43  AllocatorVK(std::weak_ptr<Context> context,
44  uint32_t vulkan_api_version,
45  const vk::PhysicalDevice& physical_device,
46  const std::shared_ptr<DeviceHolder>& device_holder,
47  const vk::Instance& instance,
48  const CapabilitiesVK& capabilities);
49 
50  // |Allocator|
51  bool IsValid() const;
52 
53  // |Allocator|
54  void DidAcquireSurfaceFrame() override;
55 
56  // |Allocator|
57  std::shared_ptr<DeviceBuffer> OnCreateBuffer(
58  const DeviceBufferDescriptor& desc) override;
59 
60  // |Allocator|
61  std::shared_ptr<Texture> OnCreateTexture(
62  const TextureDescriptor& desc) override;
63 
64  // |Allocator|
65  ISize GetMaxTextureSizeSupported() const override;
66 
67  AllocatorVK(const AllocatorVK&) = delete;
68 
69  AllocatorVK& operator=(const AllocatorVK&) = delete;
70 };
71 
72 } // namespace impeller
73 
74 #endif // FLUTTER_IMPELLER_RENDERER_BACKEND_VULKAN_ALLOCATOR_VK_H_
device_holder.h
impeller::DeviceBufferDescriptor
Definition: device_buffer_descriptor.h:14
impeller::UniquePoolVMA
fml::UniqueObject< PoolVMA, PoolVMATraits > UniquePoolVMA
Definition: vma.h:63
impeller::AllocatorVK::~AllocatorVK
~AllocatorVK() override
vk.h
impeller::TSize< int64_t >
impeller::AllocatorVK
Definition: allocator_vk.h:22
impeller::Allocator
An object that allocates device memory.
Definition: allocator.h:22
impeller::CapabilitiesVK
The Vulkan layers and extensions wrangler.
Definition: capabilities_vk.h:33
impeller::ContextVK
Definition: context_vk.h:40
impeller::UniqueAllocatorVMA
fml::UniqueObject< VmaAllocator, AllocatorVMATraits > UniqueAllocatorVMA
Definition: vma.h:31
allocator.h
device_buffer_vk.h
impeller::TextureDescriptor
A lightweight object that describes the attributes of a texture that can then used an allocator to cr...
Definition: texture_descriptor.h:37
context_vk.h
impeller
Definition: aiks_context.cc:10