EAX decreases game speed

PITmaster · Dec 11, 2003, 11:13 AM

Playing games with EAX option (no 3D, surround or quadro or anything similar available), graphics is slowing down. The normal stereo have to be selected to increase gfx speed.
Example - Call Of Duty
What is the reason?

No problem with CL drivers.

PITmaster
SBLive, Radeon7500, C900@1125, Win98

Rogacz · Dec 11, 2003, 12:00 PM

Yeah! You`re right. I was wondering why COD is slowing down to approx. 20 FPS on my machine (AMD Barton 2500+, 512 DDR, GF FX 5600 Ultra, SB Audigy2) until I`ve installed kX.

HunterZ · Dec 11, 2003, 12:05 PM

kX doesn't support most (if any) EAX features anyways, so there's not much point in having it enabled. kX does support DirectSound3D however.

Rogacz · Dec 11, 2003, 12:47 PM

It doasn`t support reverberating and so on, but it does audio possitioning, without having EAX turned on in CoD for example my 6.1 sound system was useless.

PITmaster · Dec 11, 2003, 03:33 PM

Yes, exactly.
Eugene explain, please.

PITmaster

HunterZ · Dec 11, 2003, 11:06 PM

That sucks - are you sure there's no way to have it use DirectSound3D instead of EAX for the positional sound? Most other games have the option to still use "hardware accelerated" sound even without EAX enabled (including Knights of the Old Republic that I'm playing now, which has specific support for EAX).

It's just a guess, but maybe kX does something weird when CoD asks kX to do advanced EAX things?

Being more of a gamer than a musician, I'm also interested to hear Eugene's input on this one.

**Eugene Gavrilov** · Dec 12, 2003, 12:53 AM

at the moment, kX doesn't support EAX at all -- however, it handles EAX requests, stores and pre-calculates certain EAX-related parameters (although they are just ignored by the 3-D engine at the moment)
there might be certain inefficient / unoptimized code dealing with EAX that causes problems...

you need to disable EAX in your game (note that 'DirectSound 3D' and 'EAX' are two different things, so, it is not really necessary to disable hardware acceleration unless you really need this)

/E

p.s.
btw, EAX enabled -> 20 fps
EAX disabled -> ? fps

Dec 11, 2003, 11:13 AM	#1
PITmaster DriverHeaven Addict Join Date: Sep 2003 Posts: 266 Rep Power: 0	EAX decreases game speed Playing games with EAX option (no 3D, surround or quadro or anything similar available), graphics is slowing down. The normal stereo have to be selected to increase gfx speed. Example - Call Of Duty What is the reason? No problem with CL drivers. PITmaster SBLive, Radeon7500, C900@1125, Win98

Dec 11, 2003, 12:00 PM	#2
Rogacz Porcupine Floyd Join Date: Oct 2003 Location: Poland Posts: 422 Rep Power: 0	Yeah! You`re right. I was wondering why COD is slowing down to approx. 20 FPS on my machine (AMD Barton 2500+, 512 DDR, GF FX 5600 Ultra, SB Audigy2) until I`ve installed kX. __________________

Dec 11, 2003, 12:05 PM	#3
HunterZ DriverHeaven Addict Join Date: May 2003 Location: Seattle, USA Posts: 257 Rep Power: 0	kX doesn't support most (if any) EAX features anyways, so there's not much point in having it enabled. kX does support DirectSound3D however. __________________ Athlon XP 3200+, Gigabyte GA7N-400Pro2 Rev 2.0 (nVidia nForce2 chipset), 1 GB DDR400 (CAS 2.0, dual-channel), ATI Radeon 9800 Pro 256MB AGP 8x, WinXP Pro SP2, DX9.0c., Logitech Z-5500 5.1 speakers

Dec 11, 2003, 12:47 PM	#4
Rogacz Porcupine Floyd Join Date: Oct 2003 Location: Poland Posts: 422 Rep Power: 0	It doasn`t support reverberating and so on, but it does audio possitioning, without having EAX turned on in CoD for example my 6.1 sound system was useless. __________________

Dec 11, 2003, 11:06 PM	#6
HunterZ DriverHeaven Addict Join Date: May 2003 Location: Seattle, USA Posts: 257 Rep Power: 0	That sucks - are you sure there's no way to have it use DirectSound3D instead of EAX for the positional sound? Most other games have the option to still use "hardware accelerated" sound even without EAX enabled (including Knights of the Old Republic that I'm playing now, which has specific support for EAX). It's just a guess, but maybe kX does something weird when CoD asks kX to do advanced EAX things? Being more of a gamer than a musician, I'm also interested to hear Eugene's input on this one. __________________ Athlon XP 3200+, Gigabyte GA7N-400Pro2 Rev 2.0 (nVidia nForce2 chipset), 1 GB DDR400 (CAS 2.0, dual-channel), ATI Radeon 9800 Pro 256MB AGP 8x, WinXP Pro SP2, DX9.0c., Logitech Z-5500 5.1 speakers

Dec 11, 2003, 03:33 PM	Thread Starter #5
PITmaster DriverHeaven Addict Join Date: Sep 2003 Posts: 266 Rep Power: 0	Yes, exactly. Eugene explain, please. PITmaster

Dec 12, 2003, 12:53 AM	#7
Eugene Gavrilov kX Project Lead Programmer and Coordinator Join Date: Dec 2002 Posts: 3,106 Rep Power: 73	at the moment, kX doesn't support EAX at all -- however, it handles EAX requests, stores and pre-calculates certain EAX-related parameters (although they are just ignored by the 3-D engine at the moment) there might be certain inefficient / unoptimized code dealing with EAX that causes problems... you need to disable EAX in your game (note that 'DirectSound 3D' and 'EAX' are two different things, so, it is not really necessary to disable hardware acceleration unless you really need this) /E p.s. btw, EAX enabled -> 20 fps EAX disabled -> ? fps