cpuPatchTable.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_CPU_PATCH_TABLE_H
#define OPENSUBDIV3_OSD_CPU_PATCH_TABLE_H
 
#include "../version.h"
 
#include <vector>
#include "../far/patchDescriptor.h"
#include "../osd/nonCopyable.h"
#include "../osd/types.h"
 
#include <vector>
 
namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {
 
namespace Far{
    class PatchTable;
};
 
namespace Osd {

class CpuPatchTable {
public:
    static CpuPatchTable *Create(const Far::PatchTable *patchTable,
                                 void *deviceContext = NULL) {
        (void)deviceContext;  // unused
        return new CpuPatchTable(patchTable);
    }
 
    explicit CpuPatchTable(const Far::PatchTable *patchTable);
    ~CpuPatchTable() {}
 
    const PatchArray *GetPatchArrayBuffer() const {
        return &_patchArrays[0];
    }
    const int *GetPatchIndexBuffer() const {
        return &_indexBuffer[0];
    }
    const PatchParam *GetPatchParamBuffer() const {
        return &_patchParamBuffer[0];
    }
 
    size_t GetNumPatchArrays() const {
        return _patchArrays.size();
    }
    size_t GetPatchIndexSize() const {
        return _indexBuffer.size();
    }
    size_t GetPatchParamSize() const {
        return _patchParamBuffer.size();
    }
 
    const PatchArray *GetVaryingPatchArrayBuffer() const {
        if (_varyingPatchArrays.empty()) {
            return NULL;
        }
        return &_varyingPatchArrays[0];
    }
    const int *GetVaryingPatchIndexBuffer() const {
        if (_varyingIndexBuffer.empty()) {
            return NULL;
        }
        return &_varyingIndexBuffer[0];
    }
    size_t GetVaryingPatchIndexSize() const {
        return _varyingIndexBuffer.size();
    }
 
    int GetNumFVarChannels() const {
        return (int)_fvarPatchArrays.size();
    }
    const PatchArray *GetFVarPatchArrayBuffer(int fvarChannel = 0) const {
        return &_fvarPatchArrays[fvarChannel][0];
    }
    const int *GetFVarPatchIndexBuffer(int fvarChannel = 0) const {
        return &_fvarIndexBuffers[fvarChannel][0];
    }
    size_t GetFVarPatchIndexSize(int fvarChannel = 0) const {
        return _fvarIndexBuffers[fvarChannel].size();
    }
    const PatchParam *GetFVarPatchParamBuffer(int fvarChannel= 0) const {
        return &_fvarParamBuffers[fvarChannel][0];
    }
    size_t GetFVarPatchParamSize(int fvarChannel = 0) const {
        return _fvarParamBuffers[fvarChannel].size();
    }
 
protected:
    PatchArrayVector _patchArrays;
    std::vector<int> _indexBuffer;
    PatchParamVector _patchParamBuffer;
 
    PatchArrayVector _varyingPatchArrays;
    std::vector<int> _varyingIndexBuffer;
 
    std::vector< PatchArrayVector > _fvarPatchArrays;
    std::vector< std::vector<int> > _fvarIndexBuffers;
    std::vector< PatchParamVector > _fvarParamBuffers;
};
 
}  // end namespace Osd
 
}  // end namespace OPENSUBDIV_VERSION
using namespace OPENSUBDIV_VERSION;
 
}  // end namespace OpenSubdiv
 
#endif  // OPENSUBDIV3_OSD_CPU_PATCH_TABLE_H