| // 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. |
| |
| #pragma once |
| |
| #include "impeller/renderer/render_target.h" |
| |
| namespace impeller { |
| |
| /// @brief An implementation of the [RenderTargetAllocator] that caches all |
| /// allocated texture data for one frame. |
| /// |
| /// Any textures unused after a frame are immediately discarded. |
| class RenderTargetCache : public RenderTargetAllocator { |
| public: |
| explicit RenderTargetCache(std::shared_ptr<Allocator> allocator); |
| |
| ~RenderTargetCache() = default; |
| |
| // |RenderTargetAllocator| |
| void Start() override; |
| |
| // |RenderTargetAllocator| |
| void End() override; |
| |
| // |RenderTargetAllocator| |
| std::shared_ptr<Texture> CreateTexture( |
| const TextureDescriptor& desc) override; |
| |
| // visible for testing. |
| size_t CachedTextureCount() const; |
| |
| private: |
| struct TextureData { |
| bool used_this_frame; |
| std::shared_ptr<Texture> texture; |
| }; |
| |
| std::vector<TextureData> texture_data_; |
| |
| RenderTargetCache(const RenderTargetCache&) = delete; |
| |
| RenderTargetCache& operator=(const RenderTargetCache&) = delete; |
| }; |
| |
| } // namespace impeller |