Eric, I assume there are changes to directfb to take advantage of the dma blit. Is this currently a patch or is it in directfb? I am using version 1.2 of directfb.
Thanks, Craig On Thursday 28 May 2009 1:48:18 pm Eric Nelson wrote: > Hello Craig, > > Craig Matsuura wrote: > > I am also curious about the progress. I am also interested in speeding > > up blitting in directfb. I am currently on directfb 1.2, I am using the > > fbdev not the mem mapping as I need it for an app that runs on the vid0 > > in rgb24 bit mode. > > The latest driver can be found in our Git repository > (file drivers/misc/dav-dma.c) > http://git.boundarydevices.com/git-repos?p=linux-bd > > > I can not run on the osd0 as resolutions higher than 640x480 on the OSD > > will cause video tearing. I run the vid0 at 1280x720 (720p). > > Using DMA for blts will help with tearing, but you'll likely also need to > sync with the vertical refresh interrupt. > > > I have contemplated using the /dev/mem but was unsure if it was really > > worth the effort. I am also using the DSP with Codec Engine 2 from TI so > > I can not use the c64 acceleration. > > The "blt" operations in dav-dma should inter-operate with CE2 just fine > without the acceleration code in DFB. > > > On Wednesday 02 January 2008 8:36:20 pm Sriram Neelakandan wrote: > > > Hi Eric, > > > > > > I stumbled on this posting recently.. > > > > http://mail.directfb.org/pipermail/directfb-users/2007-November/000123.ht > >ml > > > > > I am looking to use the driver .. > > > Do u have any latest updates ? > > > Also it will be of great help, if you could post a sample user space > > > program, that demos the usage of your driver. > > Sorry for that, Sriram. I haven't had time to keep up with the Direct-FB > mailing list and didn't notice your post. > > I also haven't touched base with the DFB team to know whether they've > been keeping the DMA blt support up-to-date. > > When integrated with Direct-FB, the standard DFB demos will work (only > faster). > > Eric -- Craig Matsuura - Principal Engineer Control4 11734 South Election Road - Suite 200 Salt Lake City, UT 84020-6432 PH: 801-523-3161 FX: 801-523-3199
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