/// <summary>Create a new OpenGlRenderer ready to start rendering a model.</summary>
/// <param name="modelContext">OpenGL model context instance containing details about the OpenGL state.</param>
public OpenGlRenderer(OpenGlModelContext modelContext)
{
this.modelContext = modelContext;
this.modelRoot = null;
this.currentObject = null;
this.currentObjectHasOwnCommands = false;
this.materialDefs = new Dictionary <int, OpenGlMaterial>();
}