[MPlayer-dev-eng] Writing a brand new D3D video output to fix Vista Aero disabling

[Reimar Döffinger]

On Wed, Jun 04, 2008 at 02:56:28AM +0300, Ivan Kalvachev wrote:
> On 6/3/08, Reimar Döffinger <Reimar.Doeffinger at stud.uni-karlsruhe.de> wrote:
> > On Tue, Jun 03, 2008 at 02:07:43PM -0500, compn wrote:
> >> vlc's d3d output mentions something about using hardware yuv...
> >> http://git.videolan.org/?p=vlc.git;a=blob;f=modules/video_output/msw/direct3d.c;h=829882062ca161623ccf415736f57e370c503600;hb=HEAD
> >
> > AFAICT, this
> > 1) still will end up doing software conversion from YV12 to UYVY or YUY2
> > 2) on some hardware may end up still using software YUV->RGB if you are
> > unlucky
> > 3) D3D10 does not seem to provide UYVY/YUY2 formats, so it may be a dead-end
> > in addition (though in the end using D3D probably always implies that
> > long-term compatibility while providing new features will be a huge
> > pain).
> >
> > Obviously I was thinking of doing the conversion as with the OpenGL vo,
> > though since my knowledge on D3D is very limited that might also be a
> > bad idea...
> > Oh, and the reference to MPC might be much more useful, it has a far
> > more advanced D3D renderer, including quite a few custom filters (if
> > that is a goal, it was a big part of my work on the OpenGL vo and
> > should be less effort with D3D).
> 
> Reimar, I actually wonder if you have ever come to know
> what GL_SGIX_ycrcb,  GL_YCRCB_SGIX are about?
> Googling about them didn't reveal much info.

I guess they are the same or similar to the Apple-extension. Not really
much point in them, doubly so since they still require a colourspace
conversion usually, not to mention that unless you are running OSX they
usually are not available. So whatever they are exactly, I am quite
confident they are useless for MPlayer.

Greetings,
Reimar Döffinger