OpenSubdiv/opensubdiv/osd/cpuVertexBuffer.cpp

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#include "../osd/cpuVertexBuffer.h"

#include <string.h>

namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {

OsdCpuVertexBuffer::OsdCpuVertexBuffer(int numElements, int numVertices)
    : _numElements(numElements),
      _numVertices(numVertices),
      _cpuBuffer(NULL) {

    _cpuBuffer = new float[numElements * numVertices];
}

OsdCpuVertexBuffer::~OsdCpuVertexBuffer() {

    delete[] _cpuBuffer;
}

OsdCpuVertexBuffer *
OsdCpuVertexBuffer::Create(int numElements, int numVertices) {

    return new OsdCpuVertexBuffer(numElements, numVertices);
}

void
OsdCpuVertexBuffer::UpdateData(const float *src, int startVertex, int numVertices) {

    memcpy(_cpuBuffer + startVertex * _numElements,
           src, GetNumElements() * numVertices * sizeof(float));
}

int
OsdCpuVertexBuffer::GetNumElements() const {

    return _numElements;
}

int
OsdCpuVertexBuffer::GetNumVertices() const {

    return _numVertices;
}

float*
OsdCpuVertexBuffer::BindCpuBuffer() {

    return _cpuBuffer;
}

}  // end namespace OPENSUBDIV_VERSION
}  // end namespace OpenSubdiv