CE_VDBGrid.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * NAME: CE_VDBGrid.h ( CE Library, C++)
 *
 * COMMENTS: Compute Engine Grid.
 */

#ifndef __CE_VDBGrid__
#define __CE_VDBGrid__

#include "CE_API.h"

#include <openvdb/Platform.h>
#include <openvdb/openvdb.h>

class CE_API CE_VDBGrid
{
public:
    CE_VDBGrid() {}
    ~CE_VDBGrid() { releaseBuffer(); };

    /// Return the underlying OpenCL buffer that can be used in kernel
    /// invocations.
    const cl::Buffer &buffer() const { return myBuffer; }

    /// If the current OpenCL buffer is valid.
    bool hasBuffer() const {return (myBuffer() != 0);}

    /// Initialize the CE_Grid from the supplied UT_VoxelArray.  Note that
    /// in the case that UT_VoxelArray::isConstant(), this will be very fast
    /// and avoid allocating any actual GPU memory.
    void  initFromVDB(const openvdb::GridBase &grid);

protected:

    void releaseBuffer();

    cl::Buffer  myBuffer;
};

#endif