[Bf-taskforce25] Blender 2.5 GUI extremely slow on my computer

[Brecht Van Lommel]

Hey,

Thanks for the info. There seems to be more than enough graphics card
memory to store the third buffer. As a guess, maybe the driver claims to
support extensions but then has to do them in software? You could test
this by commenting out code:

source/blender/windowmanager/intern/wm_draw.c:
wm_triple_gen_textures, lines 372:386
(so that it always uses the third option)

Also, the output of running "glxinfo" would be useful.

Thanks,
Brecht.

On Thu, 2009-03-12 at 20:47 +0900, Dietrich Bollmann wrote:
> On Wed, 2009-03-11 at 12:33 -0400, Shaul Kedem wrote:
> > can u update to latest drivers (if u can) and use lower resolution?
> > see if that helps?
> 
> When using 640x480 and the default scene (one cube) it is ok.
> 
> But already 832x624 is kind of slow.
> 
> Cheers, Dietrich
> 
> 
> > On Wed, Mar 11, 2009 at 12:12 PM, GSR <gsr.b3d at infernal-iceberg.com> wrote:
> > > Hi,
> > > brecht at blender.org (2009-03-11 at 1216.50 +0100):
> > >> On Wed, 2009-03-11 at 13:21 +0900, Dietrich Bollmann wrote:
> > >> > But it is also extremely slow on my computer (IBM Thinkpad x60s).  When
> > >> > moving the grid / empty scene with the middle mouse in the 3D-View, the
> > >> > delay is incredibly long and disturbing.  It reminds me the delay when
> > >> > viewing a very complex scene filled with lots of objects with the
> > >> > standard / old Blender.
> > >
> > > Here it happens too.
> > >
> > >> It's not normal, though there have been changes that might cause issues.
> > >> Could you try:
> > >> * Test with a fullscreen area if it is only the 3D-view or any other
> > >> view that is slow.
> > >
> > > All the interface is slow.
> > >
> > >> * Under Outliner > User Preferences > System & OpenGL > Window Draw
> > >> Method, enable Overlap and Full and test if they are slow as well.
> > >
> > > Triple buffer is unusable, full is a bit laggy, and overlap behaves
> > > like in previous versions.
> > >
> > >> Alo, please mention your graphics card, how much memory it has, and your
> > >> screen resolution.
> > >
> > > 9600XT, 256MB, 1600*1200.
> > >
> > > GSR
> > >
> > > PS: I tried adding RNA_def_property_enum_default(prop,
> > > USER_DRAW_OVERLAP); to change the default, and confirmed the 1 appears
> > > in the generated C files, but it always starts with triple buffer
> > > anyway.
> > >
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> 
> 
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