cpuEvalLimitContext.h

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//
//   Copyright 2013 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.
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#ifndef OSD_CPU_EVAL_LIMIT_CONTEXT_H
#define OSD_CPU_EVAL_LIMIT_CONTEXT_H

#include "../version.h"

#include "../osd/evalLimitContext.h"
#include "../osd/vertexDescriptor.h"
#include "../far/patchTables.h"
#include "../far/patchMap.h"

#include <map>
#include <stdio.h>

namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {

namespace Osd {

class CpuEvalLimitContext : public EvalLimitContext {
public:

    static CpuEvalLimitContext * Create(Far::PatchTables const &patchTables,
                                           bool requireFVarData=false);

    virtual ~CpuEvalLimitContext();


    const Far::PatchTables::PatchArrayVector & GetPatchArrayVector() const {
        return _patchArrays;
    }
    
    const std::vector<Far::PatchParam::BitField> & GetPatchBitFields() const {
        return _patchBitFields;
    }

    const std::vector<unsigned int> & GetControlVertices() const {
        return _patches;
    }

    Far::PatchTables::VertexValenceTable const & GetVertexValenceTable() const {
        return _vertexValenceTable;
    }

    Far::PatchTables::QuadOffsetTable const & GetQuadOffsetTable() const {
        return _quadOffsetTable;
    }
    
    std::vector<float> const & GetFVarData() const {
        return _fvarData;
    }
    
    int GetFVarWidth() const {
        return _fvarwidth;
    }

    Far::PatchMap const & GetPatchMap() const {
        return *_patchMap;
    }

    int GetMaxValence() const {
        return _maxValence;
    }

protected:
    explicit CpuEvalLimitContext(Far::PatchTables const & patchTables, bool requireFVarData);

private:

    // Topology data for a mesh
    Far::PatchTables::PatchArrayVector     _patchArrays;    // patch descriptor for each patch in the mesh
    Far::PatchTables::PTable               _patches;        // patch control vertices
    std::vector<Far::PatchParam::BitField> _patchBitFields; // per-patch parametric info
    
    Far::PatchTables::VertexValenceTable   _vertexValenceTable; // extra Gregory patch data buffers
    Far::PatchTables::QuadOffsetTable      _quadOffsetTable;

    std::vector<float>                   _fvarData;

    Far::PatchMap * _patchMap;           // map of the sub-patches given a face index

    int _maxValence, 
        _fvarwidth;
};


} // end namespace Osd

} // end namespace OPENSUBDIV_VERSION
using namespace OPENSUBDIV_VERSION;

} // end namespace OpenSubdiv

#endif /* OSD_CPU_EVAL_LIMIT_CONTEXT_H */