/// <summary>
/// Automatic setup of frequency data from a vertices group (eg, geometry and instance data in two buffers)
/// </summary>
/// <param name="vertices"></param>
/// <param name="layout"></param>
public StreamFrequency(VerticesGroup vertices, DataLayout layout)
{
this.layout = layout;
this.frequency = new int[vertices.ChildCount];
this.indexFrequency = new int[vertices.ChildCount];
this.dataFrequency = new int[vertices.ChildCount];
if (layout == DataLayout.Stream0Geometry_Stream1InstanceData)
{
if (vertices.Count < 2)
{
throw new ArgumentException("vertices.Count");
}
RepeatCount = vertices.GetChild(1).Count;
}
}
public Graphics.VerticesGroup Fill(Graphics.IVertices vertices, int count)
{
if (this.instanceBuffer == null)
{
this.instanceBuffer = new Graphics.VerticesGroup(vertices, this.instanceMatrices);
}
bufferActive = false;
this.instanceBuffer.Count = vertices.Count;
this.instanceBuffer.SetChild(0, vertices);
this.instanceBuffer.SetIndexOffset(1, index);
this.instanceMatrices.SetDirtyRange(index, count);
this.index += count;
return(this.instanceBuffer);
}