OpenSubdiv/opensubdiv/osd/cpuDispatcher.h

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#ifndef OSD_CPU_DISPATCHER_H
#define OSD_CPU_DISPATCHER_H

#include "../osd/kernelDispatcher.h"

#include <GL/glew.h>

// Including omp.h makes sure we link against the correct OpenMP run-time
// library.  This is Windows specific, but we want a given header file to
// include the same set of files across all platforms if possible.
#include <omp.h>

namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {

class OsdCpuKernelDispatcher : public OsdKernelDispatcher
{
public:
    OsdCpuKernelDispatcher(int levels, int numVertexElements, int numVaryingElements);
    virtual ~OsdCpuKernelDispatcher();

    virtual void ApplyCatmarkFaceVerticesKernel(FarMesh<OsdVertex> * mesh, int offset,
                                                int level, int start, int end, void * data) const;
    virtual void ApplyCatmarkEdgeVerticesKernel(FarMesh<OsdVertex> * mesh, int offset,
                                                int level, int start, int end, void * data) const;
    virtual void ApplyCatmarkVertexVerticesKernelB(FarMesh<OsdVertex> * mesh, int offset,
                                                   int level, int start, int end, void * data) const;
    virtual void ApplyCatmarkVertexVerticesKernelA(FarMesh<OsdVertex> * mesh, int offset,
                                                   bool pass, int level, int start, int end, void * data) const;

    virtual void ApplyLoopEdgeVerticesKernel(FarMesh<OsdVertex> * mesh, int offset,
                                             int level, int start, int end, void * data) const;
    virtual void ApplyLoopVertexVerticesKernelB(FarMesh<OsdVertex> * mesh, int offset,
                                                int level, int start, int end, void * data) const;
    virtual void ApplyLoopVertexVerticesKernelA(FarMesh<OsdVertex> * mesh, int offset,
                                                bool pass, int level, int start, int end, void * data) const;


    virtual void CopyTable(int tableIndex, size_t size, const void *ptr);

    virtual void BeginLaunchKernel();
    virtual void EndLaunchKernel();

    virtual void BindVertexBuffer(GLuint vertexBuffer, GLuint varyingBuffer);
    virtual void UpdateVertexBuffer(size_t size, void *ptr);
    virtual void UpdateVaryingBuffer(size_t size, void *ptr);
    virtual void MapVertexBuffer();
    virtual void MapVaryingBuffer();
    virtual void UnmapVertexBuffer();
    virtual void UnmapVaryingBuffer();

    virtual void Synchronize();

    static OsdKernelDispatcher * Create(int levels, int numVertexElements, int numVaryingElements){
        return new OsdCpuKernelDispatcher(levels, numVertexElements, numVaryingElements);
    }
    static void Register() {
        Factory::GetInstance().Register("omp", Create);
    }

protected:
    
    struct DeviceTable 
    {
        DeviceTable() : devicePtr(NULL) {}
        ~DeviceTable();

        void Copy(int size, const void *ptr);
        void *devicePtr;
    };

    std::vector<DeviceTable> _tables;

    GLuint _vertexBuffer, _varyingBuffer;
    float *_vbo, *_varyingVbo;
    int _vboSize, _varyingVboSize;
    int _numVertexElements, _numVaryingElements;
};

} // end namespace OPENSUBDIV_VERSION
using namespace OPENSUBDIV_VERSION;

} // end namespace OpenSubdiv

#endif /* OSD_CPU_DISPATCHER_H */