/// <param name="corners">Must be counter-clockwise.</param>
public void DrawRectangle(Span <Vertex2d> corners)
{
foreach (ref var vertex in corners)
{
vertex.normal = new Vector4(0, 0, -1, 0);
}
// Copy the vertices
_device.UpdateBuffer <Vertex2d>(vertexBuffer, corners);
_device.SetVertexShaderConstant(0, StandardSlotSemantic.UiProjMatrix);
bufferBinding.Resource.Bind();
_device.SetIndexBuffer(indexBuffer);
_device.DrawIndexed(PrimitiveType.TriangleList, 4, 6);
}
