mtlVertexBuffer.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_MTL_VERTEX_BUFFER_H
#define OPENSUBDIV3_OSD_MTL_VERTEX_BUFFER_H
 
#include "../version.h"
#include "../osd/mtlCommon.h"
 
@protocol MTLDevice;
@protocol MTLBuffer;
 
namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {
 
namespace Osd {
 
class CPUMTLVertexBuffer {
public:
    static CPUMTLVertexBuffer* Create(int numElements, int numVertices, MTLContext* context);
 
    void UpdateData(const float* src, int startVertex, int numVertices, MTLContext* context);
 
    int GetNumElements() const
    {
        return _numElements;
    }
 
    int GetNumVertices() const
    {
        return _numVertices;
    }
 
    float* BindCpuBuffer();
    id<MTLBuffer> BindMTLBuffer(MTLContext* context);
 
    id<MTLBuffer> BindVBO(MTLContext* context)
    {
        return BindMTLBuffer(context);
    }
 
protected:
 
    CPUMTLVertexBuffer(int numElements, int numVertices);
 
    bool allocate(MTLContext* context);
 
private:
    int _numElements;
    int _numVertices;
    id<MTLBuffer> _buffer;
    bool _dirty;
};
 
} //end namespace Osd
 
} //end namespace OPENSUBDIV_VERSION
    using namespace OPENSUBDIV_VERSION;
 
} //end namespace OpenSubdiv
 
#endif // OPENSUBDIV3_OSD_MTL_VERTEX_BUFFER_H