GPL OpenGL screen flicker

I just installed GPL on my new computer with a Diamond Viper V770 32 MB AGP, I d/l the newest OpenGL driver for GPL I could find and the screen flickers ( badly) when I start to race. Doesn't make a difference what resolution I use. Any solution???

Don't know about the Viper but some graphic cards need the resolutions PLUS the colour settings at those resolutions that the game uses to be set in windows first. You only have to do this the once. 1) Run each resolution in Windows 2) each time change to the maximum refresh rate that your monitor can handle 3) keep settings for each one 4) revert back to your original windows setting. You may have to restart your computer - especially changing colour settings. When you start your game the new non-flicker settings will apply. hope this helps by the way the 'Optimal' setting for refresh rate may not work. Choose one from the drop down list. i.e. 85Hz. Alan

Please refer to the exact same thread posted on 18th January. Basically, I posted the exact same question and the answers I was very kindly given which have solved the problems are 1) Download the latest drivers for the card - go to www.diamondmm.com , here you can download a app which will check your video drivers against the latest on the web and download and install them for you. The download for the drivers is about 3meg. 2) Download the OpenGL Beta 2 driver from Papyrus www.papy.com which allows you to use OpenGL in the game instead of the crappy software video settings. Follow the instructions in the readme.txt with the OpenGL driver to install it. 3) Change the following setting in core.ini (found in the c:\sierra\GPL folder), open it in Notepad and change the line TossHighestMip = 0 to TossHighestMip = 1 and MirrorsEvery = 1 to MirrorsEvery = 8 I've fiddled with this last setting and get on well with MirrorsEvery = 6 - this setting basically makes the mirrors change in sections where 1 is changing the whole mirrors at one time and 4 is a quarter, etc. If the setting is lower the game only updates parts of the mirror at a time, so the whole thing is updated less often. The nVidia cards inc. the Diamond Viper seem to like this setting better using the OpenGL driver and you won't get the screen flicker you get with this set at MirrorsEvery = 1 Good luck. James

If you're using the Diamond drivers, switch to Nvidia drivers. If you're using nvidia 2.08, switch to 3.53, but be prepared for a performance hit on all other games. Slot

Time to repost a message from a guy called "billy" Bart Westra ---------------------------------------------------------------------------- ------------------------- I just got the GPL demo yesterday and after seeing how good it is, I plan on buying the game. There was a problem with the cars' mirrors though, which I've learned has been a long-time issue with the tnt/tnt2 cards. I searched the internet for a solution and came across a message here about using the 3.53 reference drivers with the "Use Block Transfer" setting to fix the problem, which works perfectly. The only problem is that those drivers suck hehe. I wanted to know how to enable that setting with the 2.08 drivers (the best ones imo), and discovered that this fix can be applied to any driver version by simply changing the value of the "FlippingControl" setting in the registry to "0". Depending on the driver version, this setting can be found in [HKEY_LOCAL_MACHINE\SOFTWARE\NVIDIA Corporation\RIVA TNT\OpenGL], or [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Display\0001\NVi dia\OpenGL] When doing a fresh install, the settings won't appear in the registry until an opengl game is run once. So just in case there are people out there who are looking for this type of info (since the 3.53 fix is pretty recent), here it is. :)

OK,,,I went from a full screen flicker to mirror flicker to no flicker thanks to everyones advice. I can once again run GPL!!!!! The mirrors still don't work, they are broken into bands and every other one is off center (if that makes sense). I changed my Viper V770 drivers back to 2.08 and changed the core ini TossHighestMip=1 and played with the MirrorsEvery=8 (also tried 6). Tried all the different supported resolutions, didn't make a difference. If I make the recommended changes in my registry file "flipping control=0" will this cause problems with my other sims (DTR, Nascar 3 and Legends, SCGT)?

This is the result of the MirrorsEvery setting in core.ini. I use MirrorsEvery = 4 and find that sufficient to see what is going on behind. Get 36 fps at 800*600 against 19 ai but turn a number of graphics off (arms, dynamic lighting, specular highligts, mirrors=cars only, maybe some more). System is Celeron 300A at 450MHz, 128 MB, Viper 550 (Riva TNT1 16MB) I thusfar had TossHighestMip=0, but will try setting it to 1. I don't know, but if you export the key in regedit twice, once for the value 0 and once for the value 2, you can change the filpping control value by double clicking the right .reg file. Bart Westra

Thanks for posting this. I also had the screen flicker, and still have them after effecting the changes you suggested. I tried MirrorsEvery = 4 to 8, but to no avail. Any other suggestions? Thanks for any input! My system: Intel PIII450 128 MB SDRAM MSI BxMaster mobo Creative GeForce 256 SDR video card w/nVidia 3.62 driver Win98 SE Logitech Wingman Formula Force USB GPL 1.2 at 1024x768 (Win98 Desktop also at 1024x768, 16-bit col) Papy OpenGL Beta2 patch Sunny

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> Please refer to the exact same thread posted on 18th January. > Basically, I posted the exact same question and the answers I was very > kindly given which have solved the problems are > 1) Download the latest drivers for the card - go to www.diamondmm.com , here > you can download a app which will check your video drivers against the > latest on the web and download and install them for you. The download for > the drivers is about 3meg. > 2) Download the OpenGL Beta 2 driver from Papyrus www.papy.com which allows > you to use OpenGL in the game instead of the crappy software video settings. > Follow the instructions in the readme.txt with the OpenGL driver to install > it. > 3) Change the following setting in core.ini (found in the c:\sierra\GPL > folder), open it in Notepad and change the line > TossHighestMip = 0 > to > TossHighestMip = 1 > and > MirrorsEvery = 1 > to > MirrorsEvery = 8 > I've fiddled with this last setting and get on well with MirrorsEvery = 6 - > this setting basically makes the mirrors change in sections where 1 is > changing the whole mirrors at one time and 4 is a quarter, etc. If the > setting is lower the game only updates parts of the mirror at a time, so the > whole thing is updated less often. The nVidia cards inc. the Diamond Viper > seem to like this setting better using the OpenGL driver and you won't get > the screen flicker you get with this set at MirrorsEvery = 1 > Good luck. > James > > I just installed GPL on my new computer with a Diamond Viper V770 32 MB > AGP, > > I d/l the newest OpenGL driver for GPL I could find and the screen > flickers > > ( badly) when I start to race. Doesn't make a difference what resolution I > > use. Any solution???

-- Regards Sunny Chow Airscapes Gallery ---------------------------------------------------------------- Aviation Art website: http://www.flight2000.com/hangar/airscapes ----------------------------------------------------------------

Time to repost a message from a guy called "billy" Bart Westra ---------------------------------------------------------------------------- I just got the GPL demo yesterday and after seeing how good it is, I plan on buying the game. There was a problem with the cars' mirrors though, which I've learned has been a long-time issue with the tnt/tnt2 cards. I searched the internet for a solution and came across a message here about using the 3.53 reference drivers with the "Use Block Transfer" setting [for "Buffer flipping mode" (BW)] to fix the problem, which works perfectly. The only problem is that those drivers suck hehe. I wanted to know how to enable that setting with the 2.08 drivers (the best ones imo), and discovered that this fix can be applied to any driver version by simply changing the value of the "FlippingControl" setting in the registry to "0". Depending on the driver version, this setting can be found in [HKEY_LOCAL_MACHINE\SOFTWARE\NVIDIA Corporation\RIVA TNT\OpenGL], or [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Display\0001\NVi dia\OpenGL] When doing a fresh install, the settings won't appear in the registry until an opengl game is run once. So just in case there are people out there who are looking for this type of info (since the 3.53 fix is pretty recent), here it is. :)

Get the 3.68 drivers from nvidia and set buffer flip to block transfer. > > If you're using the Diamond drivers, switch to Nvidia drivers. If you're > > using nvidia 2.08, switch to 3.53, but be prepared for a performance hit

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> on > > all other games. > > Slot > Time to repost a message from a guy called "billy" > Bart Westra > ----------------------------------------------------------------------

------ > ------------------------- > I just got the GPL demo yesterday and after seeing how good it is, I > plan on buying the game. There was a problem with the cars' mirrors > though, which I've learned has been a long-time issue with the tnt/tnt2 > cards. I searched the internet for a solution and came across a message > here about using the 3.53 reference drivers with the "Use Block > Transfer" setting to fix the problem, which works perfectly. The only > problem is that those drivers suck hehe. I wanted to know how to enable

Quoted text (7 lines)

> that setting with the 2.08 drivers (the best ones imo), and discovered > that this fix can be applied to any driver version by simply changing > the value of the "FlippingControl" setting in the registry to "0". > Depending on the driver version, this setting can be found in > [HKEY_LOCAL_MACHINE\SOFTWARE\NVIDIA Corporation\RIVA TNT\OpenGL], or

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Display\0001 \NVi Sent via Deja.com http://www.deja.com/ Before you buy.

I still had the flicker till I switched back to the 2.08 drivers for my video card (Viper V770), I could never get it to work with the newer drivers.