clPatchTable.h

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//
//   Copyright 2015 Pixar
//
//   Licensed under the terms set forth in the LICENSE.txt file available at
//   https://opensubdiv.org/license.
//
 
#ifndef OPENSUBDIV3_OSD_CL_PATCH_TABLE_H
#define OPENSUBDIV3_OSD_CL_PATCH_TABLE_H
 
#include "../version.h"
 
#include "../osd/opencl.h"
#include "../osd/nonCopyable.h"
#include "../osd/types.h"
 
#include <vector>
 
namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {
 
namespace Far{
    class PatchTable;
};
 
namespace Osd {

class CLPatchTable : private NonCopyable<CLPatchTable> {
public:
    static CLPatchTable *Create(Far::PatchTable const *patchTable,
                                cl_context clContext);
 
    template <typename DEVICE_CONTEXT>
    static CLPatchTable * Create(Far::PatchTable const *patchTable,
                                 DEVICE_CONTEXT context) {
        return Create(patchTable, context->GetContext());
    }

    ~CLPatchTable();

    cl_mem GetPatchArrayBuffer() const { return _patchArrays; }

    cl_mem GetPatchIndexBuffer() const { return _indexBuffer; }

    cl_mem GetPatchParamBuffer() const { return _patchParamBuffer; }

    cl_mem GetVaryingPatchArrayBuffer() const { return _varyingPatchArrays; }

    cl_mem GetVaryingPatchIndexBuffer() const { return _varyingIndexBuffer; }

    int GetNumFVarChannels() const { return (int)_fvarPatchArrays.size(); }

    cl_mem GetFVarPatchArrayBuffer(int fvarChannel = 0) const { return _fvarPatchArrays[fvarChannel]; }

    cl_mem GetFVarPatchIndexBuffer(int fvarChannel = 0) const { return _fvarIndexBuffers[fvarChannel]; }

    cl_mem GetFVarPatchParamBuffer(int fvarChannel = 0) const { return _fvarParamBuffers[fvarChannel]; }
 
protected:
    CLPatchTable();
 
    bool allocate(Far::PatchTable const *patchTable, cl_context clContext);
 
    cl_mem _patchArrays;
    cl_mem _indexBuffer;
    cl_mem _patchParamBuffer;
 
    cl_mem _varyingPatchArrays;
    cl_mem _varyingIndexBuffer;
 
    std::vector<cl_mem> _fvarPatchArrays;
    std::vector<cl_mem> _fvarIndexBuffers;
    std::vector<cl_mem> _fvarParamBuffers;
 
};
 
}  // end namespace Osd
 
}  // end namespace OPENSUBDIV_VERSION
using namespace OPENSUBDIV_VERSION;
 
}  // end namespace OpenSubdiv
 
#endif  // OPENSUBDIV3_OSD_CL_PATCH_TABLE_H