clVertexBuffer.h

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//
//   Copyright 2013 Pixar
//
//   Licensed under the terms set forth in the LICENSE.txt file available at
//   https://opensubdiv.org/license.
//
 
#ifndef OPENSUBDIV3_OSD_CL_VERTEX_BUFFER_H
#define OPENSUBDIV3_OSD_CL_VERTEX_BUFFER_H
 
#include "../version.h"
#include "../osd/opencl.h"
 
namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {
 
namespace Osd {

class CLVertexBuffer {
 
public:
    static CLVertexBuffer * Create(int numElements, int numVertices, cl_context clContext);
 
    template <typename DEVICE_CONTEXT>
    static CLVertexBuffer * Create(int numElements, int numVertices,
                                   DEVICE_CONTEXT context) {
        return Create(numElements, numVertices, context->GetContext());
    }

    ~CLVertexBuffer();

    void UpdateData(const float *src, int startVertex, int numVertices, cl_command_queue clQueue, 
        cl_event* startEvents = NULL, unsigned int numStartEvents = 0, cl_event* endEvent = NULL);
 
    template<typename DEVICE_CONTEXT>
    void UpdateData(const float *src, int startVertex, int numVertices,
                    DEVICE_CONTEXT context, 
                    cl_event* startEvents = NULL, unsigned int numStartEvents = 0, cl_event* endEvent = NULL) {
        UpdateData(src, startVertex, numVertices, context->GetCommandQueue(), startEvents, numStartEvents, endEvent);
    }

    int GetNumElements() const;

    int GetNumVertices() const;

    cl_mem BindCLBuffer(cl_command_queue queue);
 
protected:
    CLVertexBuffer(int numElements, int numVertices, cl_context clContext);

    bool allocate(cl_context clContext);
 
private:
    int _numElements;
    int _numVertices;
    cl_mem _clMemory;
};
 
}  // end namespace Osd
 
}  // end namespace OPENSUBDIV_VERSION
using namespace OPENSUBDIV_VERSION;
 
}  // end namespace OpenSubdiv
 
#endif  // OPENSUBDIV3_OSD_CL_VERTEX_BUFFER_H