[ydl-gen] Video Monitors--2

[David Seikel]

On Tue, 09 Jan 2007 16:05:37 -0500 Ted Zlatanov <tzz at lifelogs.com>
wrote:

> On  9 Jan 2007, onefang at gmail.com wrote:
> 
> > You are correct about the PS3's hypervisor, it controls all access
> > to the hardware, except USB which seems to go direct.  I have no
> > clue about the Xbox 360.
> >
> > The hypervisor only allows access to a framebuffer, and even then
> > it's not direct access.  The linux side writes to a frame buffer in
> > main memory, then uses the hypervisor to trigger a DMA transfer
> > that copies this to the real frame buffer on the GPU.
> 
> OK, but has there been a definite "no, forget direct video and 2D
> acceleration" statement from Sony/nVidia/YDL?  It seems like this is
> the current state of affairs, but not necessarily the end of the
> story.

I think TSS has to put up with whatever Sony gives them.  YDL has to go
through the hypervisor just like every other Linux.  Sony obviously has
a proper driver for the GPU in the GameOS, they get full use of it
there.  So I don't think nVidia has anything to do with it.  It's all
on Sony IMHO.

On the other hand, since TSS and Sony seem to have some sort of special
relationship, it would not surprise me if YDL gets it before any other
distro.

> > It should be possible for applications to use the SPE's to
> > accelerate rendering to this internal frame buffer, but that will
> > likely have to be done one app at a time.  This could probably be
> > done for both 2D and 3D.  An SPE port of the OpenGL software
> > renderer could do good things for 3D apps for instance.
> 
> As clever as this is, it's kind of silly to go that route considering
> the graphics device is right there on the motherboard.  If I could
> pick one program to get that acceleration, though, it would be
> mplayer :)

I'll be doing it to E17 first, simply because I'm more familiar with
E17 code.  Then I might have a go at porting mplayer.
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