Am Sonntag, 15. April 2012, 16:44:43 schrieb Florian Philipp: > Am 15.04.2012 16:22, schrieb Michael Mol: > > On Sun, Apr 15, 2012 at 10:09 AM, Florian Philipp <li...@binarywings.net> wrote: > >> Am 15.04.2012 15:18, schrieb Walter Dnes: > >>> On Wed, Apr 11, 2012 at 06:30:02PM +0200, Volker Armin Hemmann wrote > >>> > >>>> Am Mittwoch, 11. April 2012, 02:11:35 schrieb Walter Dnes: > >>>>> If it's PCIe, so be it. Actually, a post that prevents me wasting > >>>>> > >>>>> money is helpful <G>. Would PCIe be significantly better on the same > >>>>> CPU+GPU, or is it hype? > >>>> > >>>> a lot, lot lot lot better. No hype. > >>>> > >>> I've done some looking, and I'm back with more questions. I've also > >>> > >>> read the Nouveau-versus-NVIDIA thread. Questions... > >>> > >>> 1) Will PCIe 2.0 cards work in a PCIe 1.0 slot? I'm not expecting 2.0 > >>> performance, I just want full backwards compatability. PCIe 1.0 cards > >>> seem to be rare, and have to be ordered online, while I can pick up a > >>> 2.0 card locally at a store. > >> > >> PCIe-2.0 is fully downward compatible to 1.1 and 1.0. > >> > >>> 2) My main "torture test" will be HD fullscreen video. Will there be > >>> major improvement in that? That's 2D. Forget 3D. > >> > >> 2D video is still rendered using OpenGL if your video player supports it. > > > > I'm not aware of any video decoders using CUDA, OpenCL, or pixel > > shaders for video decoding; AFAIK, unless you're using VDPAU you're > > still using the CPU to render the video to a frame buffer. The most a > > video player is going to use OpenGL for is stretching that frame > > buffer to fit a window or screen, and possibly as a compositor to > > place overlays like subtitles or playback control elements.. > > Agreed. Decoding is still usually done in software but offloading > scaling and YUV to RGB conversion helps none the less. Mplayer, for > example, allows a lot of customization depending on the amount of > texture units. With high resolution displays and slow CPUs, this can > have surprisingly large effects. >
and with vlc you can use vaapi which can make use of the video decoding engine of the graphic chip. If the movie is using the right codec, of course. -- #163933
