/// <summary>
/// Draw the vertices in the bound buffer, using this buffer for the indices.
/// </summary>
/// <param name="buffer">Vertex buffer. Must be bound.</param>
/// <param name="elements">Number of elements to draw</param>
public void DrawIndexed(VertexArrayBuffer <T> buffer, int elements)
{
if (buffer == null)
{
throw new ArgumentNullException(nameof(buffer));
}
if (elements <= 0)
{
throw new ArgumentOutOfRangeException(nameof(elements));
}
Gl.DrawElements(buffer.Primitive, elements, DrawElementsType.UnsignedInt, null);
}
/// <summary>
/// Create a new vertex array object
/// </summary>
/// <param name="buffer">The buffer the metadata applies to. Does not need to be bound.</param>
/// <param name="pipeline">The shader pipeline for the drawing operation.</param>
/// <param name="attributes">Vertex attribute definitions</param>
public VertexArrayObject(VertexArrayBuffer <T> buffer, ShaderPipeline pipeline, params VertexAttributeDescription[] attributes)
{
if (attributes == null || buffer == null || pipeline == null)
{
throw new ArgumentNullException();
}
this.buffer = buffer;
Handle = Gl.GenVertexArray();
Verify.VerifyResourceCreated(Handle);
this.pipeline = pipeline;
Bind();
buffer.Bind();
foreach (var attr in attributes)
{
SetAttribute(attr);
}
Unbind();
buffer.Unbind();
}
