Is TDirect2DCanvas slow or am I doing something wrong?

Question

While looking for alternatives to replace GDI, I was trying to test Delphi\'s 2010 TDirect2DCanvas performance in Windows 7.

I tested it by drawing a huge polyl

Answer 1

In all my benchmark tests OpenGL (with and without MSAA antialiasing) is faster than GDI, GDI+ or Direct2D, for the particular case of drawing 2D elements like polygons, lines, rectangles, etc.