contextArena.h

//
// Copyright 2020 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_IMAGING_HGIGL_CONTEXT_ARENA_H
#define PXR_IMAGING_HGIGL_CONTEXT_ARENA_H
 
#include "pxr/pxr.h"
#include "pxr/imaging/hgi/handle.h"
#include "pxr/imaging/hgiGL/api.h"
 
#include <ostream>
#include <memory>
 
PXR_NAMESPACE_OPEN_SCOPE
 
struct HgiGraphicsCmdsDesc;
class FramebufferCacheItem;
 
class HgiGLContextArena final
{
public:
    HGIGL_API
    ~HgiGLContextArena();
 
    void InvalidateCacheItem(std::shared_ptr<FramebufferCacheItem>& item);
 
private:
    friend class HgiGL;
    friend class HgiGLDevice;
 
    HGIGL_API
    HgiGLContextArena();
 
    uint32_t _AcquireFramebuffer(
        HgiGraphicsCmdsDesc const& desc,
        bool resolved = false);
    
    HgiGLContextArena & operator=(const HgiGLContextArena&) = delete;
    HgiGLContextArena(const HgiGLContextArena&) = delete;
 
    friend std::ostream& operator<<(
        std::ostream& out,
        const HgiGLContextArena& arena);
 
    // Implementation detail.
    class _FramebufferCache;
    std::unique_ptr<_FramebufferCache> _framebufferCache;
};
 
using HgiGLContextArenaHandle = HgiHandle<HgiGLContextArena>;
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif