private void firstPass(Octree tree, BitmapData data, int width, int height)
{
byte* srcRow = (byte*)data.Scan0.ToPointer();
Int32* srcPxl;
for (int row = 0; row < height; ++row)
{
srcPxl = (Int32*)srcRow;
for (int col = 0; col < width; ++col, ++srcPxl)
tree.addColor((Color32*)srcPxl);
srcRow += data.Stride;
}
}