[Johnny569]

You are correct. There's no real OpenGL HW acceleration.

I have the 2 XBMC binaries: XBMC.exe.gl for OpenGL and XBMC.exe.dx for DirectX. I just rename to XBMC.exe the version I want to use.

I've been running some comparison and monitoring results with GPU-Z. Although the OpenGL decoding is taking place on the GPU, GPU load and GPU power consumption is about twice as high with OpenGL than with DirectX.

Also, selecting software decoding with OpenGL, does not give any different results. This all seems to indicate that it's a software based OpenGL decoding taking place on the GPU, not hardware based as you mention. Since the OpenGL decoding is software based, it's also causing higher CPU usage. But, it works without any stuttering! The picture is also a little darker with OpenGL.

This OpenGL build is the only way to get interelaced 3D working at the moment.