On Mon, 6 Dec 2010 23:05:10 +0100 Xavier Chantry <[email protected]> wrote:
> On Mon, Dec 6, 2010 at 7:35 PM, Mikhail Ramendik <[email protected]> > wrote: > > Hello, > > > > http://nouveau.freedesktop.org/wiki/FeatureMatrix lists "Decode > > videos" as WIP for NV30 and NV40 seies. > > > > As I have an NV44, I would really like to know - what is this > > feature going to be? VDPAU support for these cards, or XvMC, or > > something else? > > > > According to > http://lists.freedesktop.org/archives/nouveau/2010-August/006142.html > and the following mails/patches : XvMC. > > Not sure what is possible on nv40 but that subject was discussed > quickly here: > http://lists.freedesktop.org/archives/nouveau/2010-May/005726.html Initially I would say XVMC. VDPAU expects full hw bitstream decode. XVMC only does decode starting at idct/mb. I am guessing it is possible to support VDPAU by doing the earlier stages in software then handling the reset to hw. Well, unless someone figures out some way to handle the full pipeline in hw via shaders which is something I have no time or knowledge. The latest version of the video decode/vpe/nv40 patches are here: http://people.freedesktop.org/~jb17bsome/vpe/ddx/ddx_nouveau_vpe_v1.patch http://people.freedesktop.org/~jb17bsome/vpe/drm/drm_nouveau_vpe_v5.patch http://people.freedesktop.org/~jb17bsome/vpe/kernel/kernel_nouveau_vpe_v6.patch http://people.freedesktop.org/~jb17bsome/vpe/mesa/mesa_pipe_video_nouveau_vpe_v3.patch For mesa you need to pull the pipe-video branch. All the others apply fine against the latest branches for the ddx, drm, nouveau kernel. The current patches integrate vpe better with gem/ttm. This means that relocs/fences are emitted and it doesn't just pin all memory like before. Though, it does runs much slower compared to my last non-gem version located under the old directories in (ddx/drm/kernel/mesa). I am fairly certain from oprofile dumps that it is because of too many relocs emitted or something, but I haven't followed up. Anyway hopes this helps. Jimmy _______________________________________________ Nouveau mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/nouveau
