Fw: (no subject)

[kr992]

----- Original Message ----- 
From: Jerome Glisse 
To: kr992 
Sent: Thursday, August 31, 2006 7:05 PM
Subject: Re: (no subject)


On 8/31/06, kr992 <kr992 at interia.pl> wrote:
  yes , glxinfo tell me that i have direct rendering (without this performance
  was worse and 3dmark wasnt end without errors)
  i was put glxgears score to show that opengl working and for compare with
  boards who have other memory speed (i have 512Mb ddr 333) 

  i suspect now that performance is low cause in windows was implemented in
  drivers code to emulate T&L and vertex shader , and maybe wine and programs
  in opengl have to emulate this ...

  could be implement in intel drivers code which would be emulate opengl 
  functions of T&L and vertex shader?


915 and above chipset have pixel shader (2.0 following directx spec) but no
vertex shader and no T&L stage. Under linux with mesa when the card haven't
a feature it's emulated by software (mesa stuff).

I don't know much about the intel 3d driver (i830, i915, ...) but i would have
think that it was on pair or even better than the windows one, seems i am
wrong.

Anyway there is still a lot of developement and improvement in the linux intel 3d
driver mostly thanx to intel because they pay people for this. You could also
try man intel or man i915 (ddx driver name) and see what option you got,
tweaking some option might give you a performance boost. There is also
drioption try driconf tools to see what you can tweak for intel.

best,
Jerome Glisse


=>  so ... i have to wait for improvments of mesa emulating , or wait for intel merge in drivers the same emulation like in windows ...

Thanx
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