copyComputation.h

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//
// Copyright 2016 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
//    names, trademarks, service marks, or product names of the Licensor
//    and its affiliates, except as required to comply with Section 4(c) of
//    the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#ifndef PXR_IMAGING_HD_ST_COPY_COMPUTATION_H
#define PXR_IMAGING_HD_ST_COPY_COMPUTATION_H

#include "pxr/pxr.h"
#include "pxr/imaging/hdSt/api.h"
#include "pxr/imaging/hdSt/computation.h"

#include "pxr/base/tf/token.h"

PXR_NAMESPACE_OPEN_SCOPE


/// \class HdStCopyComputationGPU
///
/// A GPU computation which transfers a vbo range specified by src and name to
/// the given range.
///
class HdStCopyComputationGPU : public HdStComputation
{
public:
    HDST_API
    HdStCopyComputationGPU(HdBufferArrayRangeSharedPtr const &src,
                           TfToken const &name);

    HDST_API
    void Execute(HdBufferArrayRangeSharedPtr const &range,
                 HdResourceRegistry *resourceRegistry) override;

    HDST_API
    int GetNumOutputElements() const override;

    HDST_API
    void GetBufferSpecs(HdBufferSpecVector *specs) const override;

private:
    HdBufferArrayRangeSharedPtr _src;
    TfToken _name;
};


PXR_NAMESPACE_CLOSE_SCOPE

#endif  // HDST_COMPUTATION_H