Manx Posted May 29, 2002 Share Posted May 29, 2002 I know there is a long standing issue with Fog, ATI and CMBO -- namely: it don't work! So a few questions, Does anyone know why this is? ...and perhaps more importantly -- will this still be an issue with CMBB? Also, what fog graphics mode is used in CMBO? I have just started using a tweaking utility for my Radeon 8500 and a couple of the tweaks available for it are "Enable Table Fog", "Enable W Fog", and "Enable Z Fog". I was hoping that setting one of these might cure the problem, but alas no. Anyone have any further info on this problem and maybe a possible fix? TIA 0 Quote Link to comment Share on other sites More sharing options...
Schrullenhaft Posted May 29, 2002 Share Posted May 29, 2002 Fog tables don't work with ATI video cards and DirectX. They work in RAVE on the Mac, but ATI has never gotten to the point of supporting fog tables to the proper extent in DirectX. Tweaker programs will not fix the problem. The driver code just isn't there to properly support fog tables. This, unfortunately, will probably remain a problem with CMBB. The only recourse to this is to use a different method of generating fog, but that can be a significant framerate/performance hit (vertex fog, a.k.a. w-fog ?) and it won't be supported by quite a few cards (though that is becoming less of an issue since NVidia and ATI almost completely dominate the market). ATI made patches in the past to their drivers (I remember specifically beta drivers for the Rage 128 and early Radeon chips) to 'fix' problems with fog-tables, but they never worked in CMBO. I don't expect that ATI will really fix this issue at any point. Since it isn't a feature used in most FPS/Action games it doesn't really register with them as something that needs to be addressed. [ May 29, 2002, 01:46 AM: Message edited by: Schrullenhaft ] 0 Quote Link to comment Share on other sites More sharing options...
Manx Posted May 29, 2002 Author Share Posted May 29, 2002 Schrullenhaft, Thanks for the detailed explanation...i was afraid this might be the case. If it is right that CMBB will also probably not support fog with ATI cards then i will just have to get another card. Alternatively, and considering how popular ATI cards are, i hope BTS can sort out some sort of work-around for this problem. Thanks Again! 0 Quote Link to comment Share on other sites More sharing options...
MrNoobie Posted June 16, 2002 Share Posted June 16, 2002 yea i want to play in a nice foggy area... EDIT: so no matter what i upgrade the ATI thingy to the fog option wont work? [ June 16, 2002, 03:56 PM: Message edited by: MrNoobie ] 0 Quote Link to comment Share on other sites More sharing options...
Mikeydz Posted June 17, 2002 Share Posted June 17, 2002 Just tried the newest Radeon drivers dated 6/12/02, and still no dice as far as fog. 0 Quote Link to comment Share on other sites More sharing options...
MrNoobie Posted June 17, 2002 Share Posted June 17, 2002 thnx for the update mike [ June 17, 2002, 01:48 PM: Message edited by: MrNoobie ] 0 Quote Link to comment Share on other sites More sharing options...
Agua Posted June 18, 2002 Share Posted June 18, 2002 Just get a Geforce 2 or above. You can probably get a Geforce2 with 64mb DDR for realllllllly cheap nowadays. 0 Quote Link to comment Share on other sites More sharing options...
MrNoobie Posted June 19, 2002 Share Posted June 19, 2002 going to Geforce for me is a step back...i have the top of the line Radeon..i think 0 Quote Link to comment Share on other sites More sharing options...
Manx Posted June 20, 2002 Author Share Posted June 20, 2002 What gets me is that Radeon cards seem to be quite capable of displaying fog in every other game i have that features it...so, what fog table is Charles coding with that every other games producer isn't? 0 Quote Link to comment Share on other sites More sharing options...
MrNoobie Posted June 20, 2002 Share Posted June 20, 2002 agreed.... 0 Quote Link to comment Share on other sites More sharing options...
Schrullenhaft Posted June 20, 2002 Share Posted June 20, 2002 Which games do you play that show fog ? Are they DirectX or OpenGL ? It's possible that these games aren't using fog-tables, but vertex-fog (W & Z fog ?). I'm not sure what the visual or actual coding differences are between the two, but I know that ATI has had problems with other games that support fog-tables. I know Charles chose to use fog-tables rather than vertex-fog because more cards (at the time) supported fog-tables. There may also be performance or appearance reasons for using fog-tables (not sure on that). On the Mac it is no problem and I'd guess under OpenGL they may have no problems there either. Since ATI has 'rededicated' itself to release more frequent driver updates (for at least the Radeon family) maybe one day we'll see fog-table support under DirectX. 0 Quote Link to comment Share on other sites More sharing options...
Agua Posted June 20, 2002 Share Posted June 20, 2002 Originally posted by MrNoobie: going to Geforce for me is a step back...i have the top of the line Radeon..i thinkYa, but if you want fog in CM, get the cheap GeForce. 0 Quote Link to comment Share on other sites More sharing options...
MrNoobie Posted June 21, 2002 Share Posted June 21, 2002 Since ATI has 'rededicated' itself to release more frequent driver updates (for at least the Radeon family) maybe one day we'll see fog-table support under DirectX.lets hope so Ya, but if you want fog in CM, get the cheap GeForce.ive been playing this game for over a week now and im having fun, fog or no fog im enjoying this purchase 0 Quote Link to comment Share on other sites More sharing options...
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