> On 6/21/05, Thomas Hellström <[EMAIL PROTECTED]> wrote: >> While this will probably work today it will leave little room for future >> applications of DRI. > > Can XvMC needs be handled via the V4L interface? I would expect an > some point relevant V4L drivers will also get integrated into the > DRM/fbdev composite driver. >
I haven't actually looked into the V4L interface, but in VIA's own solution they end up with a proprietary decoder interface that uses their V4L kernel driver and needs to be run as root. Imagine a vulnerable media player that accesses remote URLs and needs to be run as root. i810 XvMC (from which the unichrome driver initially was derived) is also using drm, but I think nobody is really using it. > Is 8K of memory not enough for VIA? Or is the problem that there are > three structures being placed in sarea: DRM, via DRM, via XvMC. With > three structures you can't tell the offset to load the third one at. > Could the three structures problem be fixed by just combining the > structure defs for via DRM and via XvMC? It is sufficient today. My point is that we'll be restricting the generality of drm. After som continous development of OpenGL and XvMC the private part of the sarea would look like ------------- OpenGL stuff ------------- XvMC stuff ------------- XvmC lock array ------------- More OpenGL stuff ------------- Continuation of XvMC lock array _____________ Even More OpenGL stuff ______________ and therefore IMHO the cleanest solution is to have an XvMC private sarea of it's own, and I'd like to be able to reserve shared memory pages for authenticated clients only, and I believe the DRM is the right place for this. Since nobody AFAIK is using this possibility today, it might not worth preserving and I can of course always implement a driver-specific IOCTL for this when / if it's going into the unichrome drivers. /Thomas > > Another solution is to create another shared memory type. > > -- > Jon Smirl > [EMAIL PROTECTED] > ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_idt77&alloc_id492&op=click -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
