public int CompareTo(BatchKey other)
{
if (Object.ReferenceEquals(other, null))
{
return(1);
}
// Draw transparent objects later.
if (_transparency && !other._transparency)
{
return(1);
}
if (!_transparency && other._transparency)
{
return(-1);
}
if (_shader != other._shader)
{
return(_shader.GetType().Name.CompareTo(other._shader.GetType().Name));
}
if (_texture != other._texture)
{
if (_texture == null && other._texture != null)
{
return(1);
}
if (_texture != null && other._texture == null)
{
return(-1);
}
return(_texture.Index.CompareTo(other._texture.Index));
}
if (_index == -1 || other._index == -1)
{
return(0);
}
return(_index.CompareTo(other._index));
}
