// New items
/// <summary> Make a new entry of this type with an optional name </summary>
public GLVertexArray NewArray(string name = null)
{
GLVertexArray b = new GLVertexArray();
items[EnsureName(name)] = b;
return(b);
}
/// <summary> Make a new entry of this type with an optional name </summary>
public GLVertexArray NewVertexArray(string name = null)
{
var b = new GLVertexArray(); // a standard buffer returned is not for uniforms do not suffer the std140 restrictions
items[EnsureName(name)] = b;
return(b);
}
/// <summary>Bind buffer to vertext array at this bindingindex, with the start position stride and divisor</summary>
public void Bind(GLVertexArray va, int bindingindex, int start, int stride, int divisor = 0) // set buffer binding to a VA
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
System.Diagnostics.Debug.Assert(mapmode == MapMode.None); // catch unmap missing. Since binding to VA can be done before buffer is full, then don't check BufferSize
va.Bind();
GL.BindVertexBuffer(bindingindex, Id, (IntPtr)start, stride); // this buffer to binding index
GL.VertexBindingDivisor(bindingindex, divisor);
GLStatics.Check();
//System.Diagnostics.Debug.WriteLine("BUFBIND " + bindingindex + " To B" + Id + " pos " + start + " stride " + stride + " divisor " + divisor);
}
/// <summary> Add this type with an optional name </summary>
public GLVertexArray Add(GLVertexArray disp, string name = null)
{
System.Diagnostics.Debug.Assert(!items.ContainsValue(disp));
items.Add(EnsureName(name), disp);
return(disp);
}