[ydl-gen] Direct Rendering support for PS3

[Warren Nagourney]

Running glxgears on the PS3 using ssh to my Powerbook resulted in a  
claim of ~1500 fps and much faster apparent speed (even over my slow  
LAN - ~1 Mb/s). Of course, the Powerbook does have acceleration for  
OpenGL which makes up for the slow network (so the rendering is done  
on the Mac's server). I still don't believe the reported numbers.

-wn

On Nov 28, 2007, at 8:20 PM, Sanders, Rob M. wrote:

> I thought the graphics under *any* linux on the PS3 was double  
> buffered, and
> depended on the hypervisor to pull one buffer and push that to the  
> RSX, then
> at some point later in time pull the other buffer.  Depending on  
> that update
> rate graphics are going to be somewhat ragged, even if glxgears is  
> reporting
> a significantly higher rate.  I've been known to be wrong though,  
> so find a
> suitablely sized grain of salt....
>
>
> Rob
>
>
> -----Original Message-----
> From: yellowdog-general-bounces at lists.terrasoftsolutions.com on  
> behalf of Warren Nagourney
> Sent: Wed 11/28/2007 10:34 PM
> To: Discussion List for General Yellow Dog Linux User Topics
> Subject: Re: [ydl-gen] Direct Rendering support for PS3
>
> It is claiming about 300 fps, which I take with a grain of salt. The
> gear display is a but jumpy, which the gears rotating in bursts about
> 1 second apart. It is hard to believe that each burst involves 300
> frames, but it is possible.
>
> -wn
>
>
> On Nov 28, 2007, at 7:27 PM, Reese, Shawn S. wrote:
>
>> Thank for the reply Warren,
>>
>> That's what I meant by direct rendering, using the graphics
>> acceleration.
>>
>> But you say you can run OpenGL programs at a good rate.  Could you
>> do me a favor?  Can you run the "glxgears" program, and tell me the
>> frame rate you are getting?
>>
>> With the direct rendering on an x86 with a Radeon 9250 I get 265
>> fps.  Without direct rendering, I only get 25 fps.
>>
>> With no direct rendering on a G5 PowerMac running YellowDog, using
>> a Radeon 9600, I get 70 fps.  YellowDog doesn't support direct
>> rendering for the G5, or at least I can't get the drivers right.
>>
>> That's what got me wondering about the PS3 graphics.  If it has
>> pretty good fps without rendering, it may be worth it to get one
>> and hope YellowDog supports those drivers later.  Or at least maybe
>> Nvidia will.
>>
>> Thanks again.
>>
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