On Wed, 23 Apr 2008 18:28:40 +0200 thomasg <[EMAIL PROTECTED]> babbled:
yup. those 7m/sec (that's write to video ram) is also shared with SD card IO. 7m/sec for VGA graphics is not much. QVGA is 1/4 the pixel count of VGA. this will be slower on the gta02 than gta01. gta01 get you about 43m/sec to video memory. xglamo only accelerates a small subset of 2d operations and no 3d. 3d itself is very limited even if we did it - it would be QVGA only for starters. 256x256 max texture size also isn't very useful. so as such if you are reading data from SD CARD and doing graphics - it will be problematic - likely SD card IO will lose out big-time. > I guess the problem is, that the samsung s3c doesn't have enough interfaces > for all the hardware freerunner has. > So the Glamo ended up on the SDIO-port (used for the SD-slot in gta01), and > the SD-slot is no connected to the glamos own SD-interface. > > On Wed, Apr 23, 2008 at 6:20 PM, christopher bradski < > [EMAIL PROTECTED]> wrote: > > > Just curious how the gfx chip ended up sharing the same bus as the > > sd-slot? How slow would a video be on this device? Ie. Would a downcoded > > video be watchable since the freerunner has more available memory and cpu > > power available to do software decoding? > > Sent via BlackBerry by AT&T > > > > -----Original Message----- > > From: Ian Stirling <[EMAIL PROTECTED]> > > > > Date: Wed, 23 Apr 2008 16:54:02 > > To:List for Openmoko community discussion <community@lists.openmoko.org> > > Subject: Re: Video of Qt 4.4 on Neo1973: brings iPhone like graphics > > > > > > James Olney wrote: > > > looks nice, obviously the freerunner with it's improved hardware and > > > grfx chip will really start to shine. > > > > Unfortunately, not quite obviously. > > For example, the memory bus bandwidth to the GPU is some 7M/s, compared > > to 60+M/s for the GTA01, and the 3D hardware will not have drivers. > > > > > > _______________________________________________ > > Openmoko community mailing list > > community@lists.openmoko.org > > http://lists.openmoko.org/mailman/listinfo/community > > > > _______________________________________________ > > Openmoko community mailing list > > community@lists.openmoko.org > > http://lists.openmoko.org/mailman/listinfo/community > > > > > -- Carsten Haitzler (The Rasterman) <[EMAIL PROTECTED]> _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community