internal override uint Search(RenderEventArgs arg,
int x, int y,
uint lastVertexId, ZeroIndexRenderer modernRenderer)
{
OneIndexBuffer buffer = Buffer.Create(IndexBufferElementType.UInt, 4, DrawMode.Points, BufferUsage.StaticDraw);
unsafe
{
var array = (uint*)buffer.MapBuffer(MapBufferAccess.WriteOnly);
array[0] = lastVertexId - 0;
array[1] = lastVertexId - 1;
array[2] = lastVertexId - 2;
array[3] = lastVertexId - 3;
buffer.UnmapBuffer();
}
modernRenderer.Render4InnerPicking(arg, buffer);
uint id = ColorCodedPicking.ReadStageVertexId(x, y);
buffer.Dispose();
if (lastVertexId - 3 <= id && id <= lastVertexId - 0)
{ return id; }
else
{ throw new Exception("This should not happen!"); }
}