Seth Yastrov wrote:
> In data/config/gldrivers.xml there is a rule "Disable VBO for
> GNU/Linux ATI drivers". The comment above states that the problem was
> on 64-bit drivers and the check was added nearly two years ago. First,
> the rule should not be applied to 32-bit drivers because the problem
> was not identified there. Second, it's likely that the 64-bit ATI
> drivers have been fixed by now.
>
> So I am calling for all people with ATI cards on Linux (running 32-bit
> or 64-bit) to test by removing that rule and see if they don't
> actually get improved performance. If the 64-bit driver still has the
> problems, then the rule should check that the driver is 64-bit before
> disabling VBO for all users running 32-bit machines.
>
> I have tested with VBO enabled on 32-bit Linux for Radeon 9600 and
> 9700 and it gives nearly double the FPS in certain areas of the castle
> (e.g. the left room with the windows and light rays).
>
> Hopefully we can remove this, so people with ATI on Linux (running
> 32-bit, at least) can get good performance.
>   
Tested CS revision: 27318 and 27718.

- Walktest start position:
  - VBO: ~66 to ~69
  - noVBO: ~71 to ~73

- Left room with windows and lightrays:
  - VBO: ~38 to ~41
  - noVBO: ~21 to ~23

=============================================================

Linux cyanoxLappy 2.6.22-11-generic #1 SMP Mon Sep 17 03:45:58 GMT 2007 
i686 GNU/Linux

=============================================================

crystalspace.system:
  Crystal Space version 1.3.0 [Unix-x86-GCC] (Thu 24-May-2007).

crystalspace.canvas.glx2d:
  Opening GLX2D
  Video driver GL/X version (direct renderer)
  Visual ID: 0x00000027, 24bit TrueColor
  R8:G8:B8:A8,
  level 0, double buffered

crystalspace.canvas.openglcommon:
  OpenGL renderer: ATI Mobility Radeon X1400 (vendor: ATI Technologies Inc.)
  version 2.0.6473 (8.37.6)
  Using windowed mode at resolution 640x480.
  Pixel format: Color: 24 Alpha: 8 Depth: 24 Stencil: 8 AccumColor: 0
  AccumAlpha: 0 MultiSamples: 0
  Multisample: disabled

(stripped out some useless stuff)

=============================================================


Greetings,

Mark Sanders (CyaNox).

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