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Pixel shader enabled = filtering problems, odd?

Discussion in 'ATI' started by Martin Crozier, Jan 12, 2004.

  1. Hi wondering if anyone's seen this - REALLY odd:
    I have an A-Tek radeon 9100 128mb DDR (card, not the IGP version) -
    latest catalyst drivers (3.10), latest XP patches etc. On Call of Duty I
    notice that on any level that uses the pixel shader effects in openGL (which
    isn't all of them, but usually most of the SP levels and some of the MP
    levels that have water effects etc..) the texture filtering appears to
    disable itself; i.e. no bilinear or trilinear effect, just jagged unsmoothed
    "raw" textures... The game speed is slightly effected due to this, I lose
    about 20-30 fps on SP levels and about 10fps on MP levels. When i edit the
    video config in CoD and change a value and reenter the game, the textures
    are fixed for some time until i come across more pixel shader effects on
    screen and then the textures "snap back" to their jagged unfiltered states
    again. This only seems to happen in Call of Duty since I upgraded the video
    drivers, however ive tried older releases of the catalyst (3.7, 3.8) and
    nothing seems to fix it!

    Any ideas anyone? This is annoying me.

    Martin Crozier, Jan 12, 2004
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  2. Martin Crozier

    Sleepy Guest

    I've reported this here and in the Rage3d forums-
    a grainy unfiltered look on some textures (not all)
    in CoD and Knights of the Old Republic with 3.10s
    - both games are OpenGL. I've gone back to the 3.7s
    and all seems okay tho performance in KotoR is poor.
    I didnt know CoD used pixel shaders - KotoR does and thats one reason it
    performs badly but mainly I think ATI
    can't produce a decent OpenGL driver.
    Sleepy, Jan 12, 2004
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  3. Martin Crozier

    Andrew Guest

    It would be rather more productive to report it to ATI.
    That would be why ATI usually outperforms NVidia with OpenGL & D3D
    benchmarks then.
    Andrew, Jan 12, 2004
  4. Martin Crozier

    Les Guest

    OpenGL guy will probably read it. He may have posted the poblem in Catalyst
    Makers "Unofficial" problem thread.

    LOL :)
    Les, Jan 12, 2004
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