dispatchBuffer.h

//
// Copyright 2016 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_IMAGING_HD_ST_DISPATCH_BUFFER_H
#define PXR_IMAGING_HD_ST_DISPATCH_BUFFER_H
 
#include "pxr/pxr.h"
#include "pxr/imaging/hd/version.h"
#include "pxr/imaging/hd/bufferArray.h"
#include "pxr/imaging/hd/bufferSpec.h"
#include "pxr/imaging/hdSt/api.h"
#include "pxr/imaging/hdSt/bufferArrayRange.h"
#include "pxr/imaging/hdSt/bufferResource.h"
 
#include <memory>
 
PXR_NAMESPACE_OPEN_SCOPE
 
class HdStResourceRegistry;
 
using HdStDispatchBufferSharedPtr = std::shared_ptr<class HdStDispatchBuffer>;
 
class HdStDispatchBuffer : public HdBufferArray
{
public:
    HDST_API
    HdStDispatchBuffer(HdStResourceRegistry* resourceRegistry,
                       TfToken const &role,
                       int count,
                       unsigned int commandNumUints);
 
    HDST_API
    ~HdStDispatchBuffer() override;
 
    HDST_API
    void CopyData(std::vector<uint32_t> const &data);
 
    HDST_API
    void AddBufferResourceView(TfToken const &name,
                               HdTupleType tupleType, int offset);
 
    int GetCount() const { return _count; }
 
    unsigned int GetCommandNumUints() const { return _commandNumUints; }
 
    HdStBufferArrayRangeSharedPtr GetBufferArrayRange() const {
        return _bar;
    }
 
    HdStBufferResourceSharedPtr GetEntireResource() const {
        return _entireResource;
    }
 
    // HdBufferArray overrides. they are not supported in this class.
    HDST_API
    bool GarbageCollect() override;
    HDST_API
    void Reallocate(
        std::vector<HdBufferArrayRangeSharedPtr> const &,
        HdBufferArraySharedPtr const &) override;
 
    HDST_API
    void DebugDump(std::ostream &out) const override;
 
    HDST_API
    HdStBufferResourceSharedPtr GetResource() const;
 
    HDST_API
    HdStBufferResourceSharedPtr GetResource(TfToken const& name);
 
    HdStBufferResourceNamedList const& GetResources() const {return _resourceList;}
 
protected:
    HDST_API
    HdStBufferResourceSharedPtr _AddResource(TfToken const& name,
                                               HdTupleType tupleType,
                                               int offset,
                                               int stride);
 
private:
    HdStResourceRegistry *_resourceRegistry;
    int _count;
    unsigned int _commandNumUints;
    HdStBufferResourceNamedList _resourceList;
    HdStBufferResourceSharedPtr _entireResource;
    HdStBufferArrayRangeSharedPtr _bar;  // Alternative to range list in base class
};
 
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif  // PXR_IMAGING_HD_ST_DISPATCH_BUFFER_H