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From: Chris H. <ch...@gm...> - 2002-05-31 12:03:01
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=2D----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I seem to have discovered a nasty interaction between framebuffer and DRI/D= RM=20 in OpenGL applications. I can reproduce this problem in at least Return to= =20 Castle Wolfenstein (version 1.1b) and Tux Racer. I am using a 32 MB ATI Rage Pro 128 on Debian woody (XFree86 4.1). If I run= =20 Tuxracer or RTCW, and wait for the game to load, everything is alright.=20 However if I switch to a spare virtual terminal, and switch back to X, the= =20 fonts become illegible -- they just appear as coloured boxes with no=20 outlines, making things unplayable. The problem does not occur when using software based OpenGL rendering which= is=20 why I believe DRI/DRM is involved. This problem only occurs when framebuffe= r=20 is enabled in the kernel, if framebuffer is disabled the problem disappears= ,=20 so I believe framebuffer is also at fault. Greatful for any help... Chris Howells =2D----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE892SKF8Iu1zN5WiwRAgMbAJ0V5bWa85Lfsgu4FFtKeIj4c/YX8gCcCrn6 YU1lq0HuQpefLVGsDvFzN4E=3D =3DqzHZ =2D----END PGP SIGNATURE----- |
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From: Chris H. <ch...@gm...> - 2002-05-31 12:05:55
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Hi, On Friday 31 May 2002 12:54 pm, Chris Howells wrote: > I seem to have discovered a nasty interaction between framebuffer and > DRI/DRM in OpenGL applications. I can reproduce this problem in at least > Return to Castle Wolfenstein (version 1.1b) and Tux Racer. Meant to say this before... I can reproduce this under both kernel 2.4.17 and 2.4.18. |
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From: Keith W. <ke...@tu...> - 2002-05-31 12:09:49
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Chris Howells wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi, > > I seem to have discovered a nasty interaction between framebuffer and DRI/DRM > in OpenGL applications. I can reproduce this problem in at least Return to > Castle Wolfenstein (version 1.1b) and Tux Racer. > > I am using a 32 MB ATI Rage Pro 128 on Debian woody (XFree86 4.1). If I run > Tuxracer or RTCW, and wait for the game to load, everything is alright. > However if I switch to a spare virtual terminal, and switch back to X, the > fonts become illegible -- they just appear as coloured boxes with no > outlines, making things unplayable. It sounds like the texture cache is getting wiped out, but the DRI drivers aren't realizing that it's happened. This shouldn't be too hard to fix if someone has time. Keith |
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From: Geert U. <ge...@li...> - 2002-05-31 12:10:50
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On Fri, 31 May 2002, Chris Howells wrote:
> I seem to have discovered a nasty interaction between framebuffer and DRI/DRM
> in OpenGL applications. I can reproduce this problem in at least Return to
> Castle Wolfenstein (version 1.1b) and Tux Racer.
>
> I am using a 32 MB ATI Rage Pro 128 on Debian woody (XFree86 4.1). If I run
> Tuxracer or RTCW, and wait for the game to load, everything is alright.
> However if I switch to a spare virtual terminal, and switch back to X, the
> fonts become illegible -- they just appear as coloured boxes with no
> outlines, making things unplayable.
>
> The problem does not occur when using software based OpenGL rendering which is
> why I believe DRI/DRM is involved. This problem only occurs when framebuffer
> is enabled in the kernel, if framebuffer is disabled the problem disappears,
> so I believe framebuffer is also at fault.
Do you use `option UseFBDev' in your XF86Config?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@li...
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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From: Chris H. <ch...@gm...> - 2002-05-31 18:42:56
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=2D----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, On Friday 31 May 2002 1:08 pm, Geert Uytterhoeven wrote: > Do you use `option UseFBDev' in your XF86Config? No I'm not. Should I be? Cheers =2D----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE898NRF8Iu1zN5WiwRAiU5AJ95WKTct4sFOXe+ruIMvlICGxyhFACggQvB 0RaUngCVTJQdFTS3H3ceb7c=3D =3D/n6Q =2D----END PGP SIGNATURE----- |
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From: Geert U. <ge...@li...> - 2002-05-31 20:11:11
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On Fri, 31 May 2002, Chris Howells wrote:
> On Friday 31 May 2002 1:08 pm, Geert Uytterhoeven wrote:
>
> > Do you use `option UseFBDev' in your XF86Config?
>
> No I'm not. Should I be?
Yes. Without that option, the X server will change the graphics chip's
registers behind the back of aty128fb.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@li...
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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