////  Created by Bradley Austin Davis on 2015/07/20//  Copyright 2015 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #ifndef hifi_FramebufferCache_h#define hifi_FramebufferCache_h #include <QSize> #include <mutex>#include <gpu/Forward.h>#include <DependencyManager.h> /// Stores cached textures, including render-to-texture targets.class FramebufferCache : public Dependency {    SINGLETON_DEPENDENCY    public:    // Shadow map size is static    static const int SHADOW_MAP_SIZE = 2048;     /// Sets the desired texture resolution for the framebuffer objects.     void setFrameBufferSize(QSize frameBufferSize);    const QSize& getFrameBufferSize() const { return _frameBufferSize; }      /// Returns a free framebuffer with a single color attachment for temp or intra-frame operations    gpu::FramebufferPointer getFramebuffer();     // TODO add sync functionality to the release, so we don't reuse a framebuffer being read from    /// Releases a free framebuffer back for reuse    void releaseFramebuffer(const gpu::FramebufferPointer& framebuffer); private:    void createPrimaryFramebuffer();     gpu::FramebufferPointer _shadowFramebuffer;     QSize _frameBufferSize{ 100, 100 };     std::mutex _mutex;    std::list<gpu::FramebufferPointer> _cachedFramebuffers;}; #endif // hifi_FramebufferCache_h