samplerObjectRegistry.h

//
// Copyright 2020 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_IMAGING_HD_ST_SAMPLER_OBJECT_REGISTRY_H
#define PXR_IMAGING_HD_ST_SAMPLER_OBJECT_REGISTRY_H
 
#include "pxr/pxr.h"
#include "pxr/imaging/hdSt/api.h"
 
#include <memory>
#include <vector>
 
PXR_NAMESPACE_OPEN_SCOPE
 
class HdSamplerParameters;
using HdStTextureObjectSharedPtr =
    std::shared_ptr<class HdStTextureObject>;
using HdStSamplerObjectSharedPtr =
    std::shared_ptr<class HdStSamplerObject>;
class HdStResourceRegistry;
 
class HdSt_SamplerObjectRegistry final
{
public:
    HDST_API
    explicit HdSt_SamplerObjectRegistry(HdStResourceRegistry * registry);
 
    HDST_API 
    ~HdSt_SamplerObjectRegistry();
 
    HDST_API 
    HdStSamplerObjectSharedPtr AllocateSampler(
        HdStTextureObjectSharedPtr const &texture,
        HdSamplerParameters const &samplerParameters);
 
    HDST_API 
    void GarbageCollect();
 
    HDST_API
    void MarkGarbageCollectionNeeded();
 
    HDST_API
    HdStResourceRegistry * GetResourceRegistry() const;
 
private:
    std::vector<HdStSamplerObjectSharedPtr> _samplerObjects;
    
    bool _garbageCollectionNeeded;
    HdStResourceRegistry *_resourceRegistry;
};
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif