| Flutter Impeller |

render_target_cache.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 #pragma once
6
7 #include "impeller/renderer/render_target.h"
8
9 namespace impeller {
10
11 /// @brief An implementation of the [RenderTargetAllocator] that caches all
12 /// allocated texture data for one frame.
13 ///
14 /// Any textures unused after a frame are immediately discarded.
15 class RenderTargetCache : public RenderTargetAllocator {
16 public:
17 explicit RenderTargetCache(std::shared_ptr<Allocator> allocator);
18
19 ~RenderTargetCache() = default;
20
21 // |RenderTargetAllocator|
22 void Start() override;
23
24 // |RenderTargetAllocator|
25 void End() override;
26
27 // |RenderTargetAllocator|
28 std::shared_ptr<Texture> CreateTexture(
29 const TextureDescriptor& desc) override;
30
31 // visible for testing.
32 size_t CachedTextureCount() const;
33
34 private:
35 struct TextureData {
36 bool used_this_frame;
37 std::shared_ptr<Texture> texture;
38 };
39
40 std::vector<TextureData> texture_data_;
41
42 FML_DISALLOW_COPY_AND_ASSIGN(RenderTargetCache);
43 };
44
45 } // namespace impeller
impeller::RenderTargetCache::CreateTexture
std::shared_ptr< Texture > CreateTexture(const TextureDescriptor &desc) override
Create a new render target texture, or recycle a previously allocated render target texture.
Definition: render_target_cache.cc:34
impeller::RenderTargetCache::End
void End() override
Mark the end of a frame workload.
Definition: render_target_cache.cc:19
impeller::RenderTargetCache::RenderTargetCache
RenderTargetCache(std::shared_ptr< Allocator > allocator)
Definition: render_target_cache.cc:10
impeller::RenderTargetAllocator
a wrapper around the impeller [Allocator] instance that can be used to provide caching of allocated r...
Definition: render_target.h:22
impeller::RenderTargetCache::~RenderTargetCache
~RenderTargetCache()=default
impeller::RenderTargetCache::Start
void Start() override
Mark the beginning of a frame workload.
Definition: render_target_cache.cc:13
impeller::RenderTargetCache
An implementation of the [RenderTargetAllocator] that caches all allocated texture data for one frame...
Definition: render_target_cache.h:15
impeller::TextureDescriptor
A lightweight object that describes the attributes of a texture that can then used an allocator to cr...
Definition: texture_descriptor.h:39
render_target.h
impeller
Definition: aiks_context.cc:10
impeller::RenderTargetCache::CachedTextureCount
size_t CachedTextureCount() const
Definition: render_target_cache.cc:30