On Wed, 2007-11-21 at 18:26 +0000, brian m. carlson wrote: > On Wed, Nov 21, 2007 at 12:19:25PM +0100, Michel Dänzer wrote: > >Not really; the problem is that GLX_EXT_texture_from_pixmap is > >implemented inefficiently. XaaNoOffscreenPixmaps just happens to make it > >usable, at the cost of basically disabling 2D acceleration. While the > >same workaround could be implemented for EXA, there's little point in > >using it (or XAA, for that matter) at all in that case. So there's > >really no point in implementing such an option for EXA, compared to just > >switching to XAA. > > Ah. That explains a lot. However, XVideo doesn't work with XAA, while > it does with EXA. Upstream has no intention of fixing this, AFAIK. > Which means that programs (like miro) that don't allow disabling XVideo > don't work with XAA. Oops.
It's not a matter of intention but simply not fixable reliably with XAA. (Textured video also can't work without offscreen memory) > >With the i915tex Mesa driver (or the i915 driver from upstream Git, but > >that also requires xserver Git), EXA allows for more efficient > >GLX_EXT_texture_from_pixmap together with 2D acceleration, but > >unfortunately this is difficult to set up. > > How do I enable the i915tex driver? It seems it's already present in > libgl1-mesa-dri. At the very least, you need libdrm and the i915 kernel module from the drm Git branch i915tex-compat. I'm not sure it'll work without rebuilding Mesa and/or xf86-video-intel (2.1; 2.2 is incompatible with i915tex, it requires the i915 driver from mesa Git master for this) though. Then you'll need Option "Legacy3D" "off" to make it use i915tex instead of i915. -- Earthling Michel Dänzer | http://tungstengraphics.com Libre software enthusiast | Debian, X and DRI developer
