Does anyone on the mailing list know how I can take advantage of the dam blitting (dav_dma) in directfb? Do I need the davincifb.c drivers? Are there changes in directfb? Will it work with directfb 1.1.1?
Thanks, Craig On Thursday 28 May 2009 2:22:45 pm Eric Nelson wrote: > Craig Matsuura wrote: > > 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. > > That's right. There are some patches needed to allow DFB to allocate > surfaces in contiguous memory and use the DMA driver to do blts. > > The last I checked, these were based on DFB 1.2.0, but I'll defer to others > about the current state, since I haven't touched DFB in over a year. > > > 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 > > > > > > ------------------------------------------------------------------------ > > > > _______________________________________________ > > directfb-users mailing list > > directfb-users@directfb.org > > http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-users -- 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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