Vertex Buffer

smarty2 · Post by **smarty2** » Sat Apr 16, 2011 1:08 pm

I am getting a lot of these error messages of late what does it mean?

iceman2117 · Post by **iceman2117** » Sat Apr 16, 2011 3:20 pm

hi, ...

smarty, ...
I think DirectX, Graphiccarddriver Problem.

DirectX and Carddriver new install.

g'ice

smarty2 · Post by **smarty2** » Sat Apr 16, 2011 3:40 pm

Thanks iceman, trouble is I have the latest card drivers, not sure about DX though?

rivimey · Post by **rivimey** » Sat Apr 16, 2011 5:40 pm

Hi Smarty,
A vertex in graphics is the point where two or more lines meet; the models and terrain etc in the sim are made from shapes built from lines, so this is a fundamental element in 3d graphics. The vertex buffer is an area of memory (probably on the gfx card itself) that is used to remember each vertex while the screen is drawn.

The fact you're seeing errors relating to this suggests strongly that the basic gfx software is messed up. It could be the graphics card driver (ATI Catalyst, etc) or DirectX (included with your OS, probably, though RW includes a copy).

I'd suggest you
(a) if possible, download latest applicable version of the gfx card software from the manufacturer's website (don't do to 3rd parties!!)
(b) reinstall the gfx card driver software,
(c) install the copy of DirectX that RW uses. Look here:
C:\Program Files (x86)\Steam\steamapps\common\railworks\Install\DirectX9\DXSETUP.exe

[note: on a 32bit OS, your Steam folder won't include " (x86)" ]

HTH,
Ruth

smarty2 · Post by **smarty2** » Sun Apr 17, 2011 8:34 am

Thanks Ruth for the explanation. I let windows download and install the graphics card driver for my 8800 gtx and went to the microsoft website for the latest end user runtime of Direct X, this problem seems mainly to happen on WCMLN?

Wikkus · Post by **Wikkus** » Sun Apr 17, 2011 1:07 pm

smarty2 wrote:Thanks Ruth for the explanation. I let windows download and install the graphics card driver for my 8800 gtx and went to the microsoft website for the latest end user runtime of Direct X, this problem seems mainly to happen on WCMLN?

Curiously enough, Mart, I don't let MS update my graphics drivers as on the occasions that I have, it's ballsed-up something. I just go to the Nvidia site and download direct.

As an aside, I too still use 8800GTXs and am on an older driver version (257.21) because of compatibility issues with some titles.

Cheers, Rik.

rivimey · Post by **rivimey** » Sun Apr 17, 2011 4:44 pm

smarty2 wrote:Thanks Ruth for the explanation. I let windows download and install the graphics card driver for my 8800 gtx and went to the microsoft website for the latest end user runtime of Direct X, this problem seems mainly to happen on WCMLN?

The latest MS code for DirectX would be v11 I think, but RW needs v9.0c IIRC - the one it needs is the one it includes in the directory I mentioned.

However, with MS stuff all sorts of weird things can happen and it could be that the disturbance caused by installing something else could fix, or unfix, the problem... very frustrating sometimes!

Regards,
Ruth

Wikkus · Post by **Wikkus** » Sun Apr 17, 2011 6:16 pm

rivimey wrote:The latest MS code for DirectX would be v11 I think, but RW needs v9.0c IIRC - the one it needs is the one it includes in the directory I mentioned.

Can of worms alert!

DX11 is only truly relevant if the card supports it (which the 8800GTX most certainly does not) and running Vista SP2 or Win 7. Later versions are backward compatible (a different discussion...) so if you're on 11 and a game requires 9, it will work (that's the theory, at least). To be honest, it's a whole topic in itself

Rik.

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