rec.autos.simulators

GPL Framerate Hit Caused by AI, not graphics

Alison Hi

GPL Framerate Hit Caused by AI, not graphics

by Alison Hi » Fri, 25 Sep 1998 04:00:00



>Sometimes when watching a replay at the Nurburgring it looks almost
>lifelike, with the incredibly crisp graphics at 1024x768, the
>light-sourcing and shading on the cars, the road snaking through the
>Eifel mountains and the cacophany of engines howling by. I'm probably
>not entitled to an unbiased opinion given my association with GPL, but
>sometimes it's hard to stop myself getting poetic :-)

I feel the same way, John!  GPL is simply fabulous.

The way I look at the cost of the hardware to run GPL is something like
this:

Where else could I, for roughly US$1200, get to drive, not one, but any
one of seven different incredible Grand Prix cars, on any one of eleven
of the most fantastic race courses ever built?  

And not just for a few laps on one special day, but any time I want, for
as long as I want.  And race against people all over the world, while
never leaving my home.

What a deal!  $1200 for seven Grand Prix cars, unlimited access rights
to eleven Grand Prix circuits, and all the superb racing I could ever
want!

Frank Williams, go home.  Sayonara, Jim Russell.  Bernie Ecclestone, eat
your heart out.

Alison



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Alison Hi

GPL Framerate Hit Caused by AI, not graphics

by Alison Hi » Fri, 25 Sep 1998 04:00:00

On Tue, 22 Sep 1998 18:25:43 +0100, "Mike Laskey"



>>the great graphics and other superlative design features will make GPL the
>>most impressive driving sim. ever to be released in my opinion.  Moving the

>It _is_ the most impressive driving sim that any of the testers have
>experienced, and as I said in another message, I've been involved with GPL
>for a good fair while now and I STILL feel as enthusiastic about it as I did
>when I first heard about it.  I'm not going to tell you that it's a perfect
>flawless game because such a beast doesn't and will never exist, but it's
>the closest thing yet to hacking round a real race track.  As a general
>comment to folks, if you're willing to put the time and effort into it in
>order to learn how to setup and drive the cars, you'll love it.  Having said
>that, you've probably played the demo a fair bit and if you can drive that,
>you'll be ok - although driving closely amongst the traffic requires never
>ending practise!!  :-)

Very true!  It's so easy to get overly optimistic and make a dive for a
hole that isn't there.

I totally agree with what Mike says here.  GPL is far and away the most
realistic racing experience I've ever encountered outside of a real race
course.  And, like real racing, you've got to put in the time to learn
the skills in order to really be quick, but when you do, it's immensely
rewarding.

Alison


Alison Hi

GPL Framerate Hit Caused by AI, not graphics

by Alison Hi » Fri, 25 Sep 1998 04:00:00



Me too!

Amen, brother!  Insanity - but glorious, gut-wrenching, pulse-pounding
screaming maniacal fun when you get it right!

In my report of the Nurburgring Papy Cup, there is a screen shot of
Scott Sanford flinging his Ferrari through Antoniusbuche.  The car's
longitudinal axis is offset from its direction of travel by at least 5
degrees.  The speed indicator on the replay reads 175 mph.  If you look
carefully, you can see air under all four wheels.  

Alison



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John Walla

GPL Framerate Hit Caused by AI, not graphics

by John Walla » Fri, 25 Sep 1998 04:00:00





>>I do have to say that the Nurburgring is a totally awesome piece of
>>work, and I would buy GPL and be delighted even if the Nordschleife
>>was the only track you could race on.
>Seconded.

>> I've done god knows how many
>>laps now and my sphincter STILL tightens everytime I approach
>>Anteniusbuche - that is one goddam scary corner. Airborne and sideways
>>at 170mph on a snaking country road is as mental as it gets.
>BTW: "Only" in GPL - or on the real thing? Bike or car?  

Oh by far the most laps in GPL! A friend drove me two laps in his 911
turbo a couple of years ago though, and it was stunning. He wouldn't
let me drive though, which didn't make me happy at the time. Mind you,
looking back I'd have to say that if I were him I'm sure I wouldn't
have let a racing nutter drive my 911 turbo around an insanely
complicated track which he'd never been on before...

GPL really gives you a good experience of the Ring though, having
extremely complex sections where precision is rewarded. Sections like
Monaco where bravery will gain you big time (or you lose it big
time...), power sections, the lot. One of the corners just past
Hohe-Acht is a favourite of mine - as you descend sharply toward the
right hander the road goes dramatically off-camber in mid-turn. To get
a good turn-in and run along the following straight you need to have
the weight of the car moving into the turn at the right moment to
counteract the change in camber, while at the same time not turning in
too early. These technical parts buried among jumps, flat out sections
and the corners that favour the brave and the committed mingle
together to make the Ring an enormously rewarding drive. I would also
say that IMO it's not _too_ difficult to learn, and five or six laps
gives the general layout. To know all the corners and to drive it well
though is a different proposition, quite apart from the normal
sim-racing difficulty of trying to string together a "perfect" mistake
free lap. I look forward to seeing who is going to be the sim-world
"Ringmeister".....

Cheers!
John

Matthias Fla

GPL Framerate Hit Caused by AI, not graphics

by Matthias Fla » Fri, 25 Sep 1998 04:00:00



>>BTW: "Only" in GPL - or on the real thing? Bike or car?  
>Oh by far the most laps in GPL! A friend drove me two laps in his 911
>turbo a couple of years ago though, and it was stunning.

I enjoyed a lap last year as one of 3 passenger of the Ring-Taxi, a
BMW M5 driven by the 2-time 24hours-race winner Sabine Reck. She
"raced" against two 911 from Bergwerk all the way to the Doettinger
Hoehe straight. The Carrera accelerated past the heavy limo after
Bergwerk, but she managed to keep the Turbo behind all the way while
*** on to the rear of the Carrera, which fired big flames out of
the exhaust, especially when braking for Pflanzgarten. Big fun!

The descent  IMHO would be Eschbach, with a left hander, followed by a
tighter right-hander into Bruennchen. The wrong camber is a challenge
especially for bikers, and the people watching there make some drivers
go over their limit. Some go too quick through the left-hander, and
arrive at the right, inner side of the right-hand turn, where they
have to brake hard. Within a few minutes, I saw a biker falling of
there, and a car scratching along the armco on the *inside* after
getting surprise oversteer under braking. Others manage to get round
the corner, but then run over the curbs into the grass on the
straight.

Nowadays, there is a big open space on the left side of Bruennchen,
just near the street. In GPL, the track is probably in the middle of
the forest as it used to be.

--
   _____
 /_______\              .\\ a t t h e a d
I  XT /~~~~                    
I  500\_____       1977' Yamaha XT.Rex 500 Enduro
 \____/\__I_I      http://www.racesimcentral.net/

Mike Laske

GPL Framerate Hit Caused by AI, not graphics

by Mike Laske » Fri, 25 Sep 1998 04:00:00


>Very true!  It's so easy to get overly optimistic and make a dive for a
>hole that isn't there.

I was enjoying a good race at Kyalami last night, putting in some real fast
laps in my endeavour to make up some positions after a poor qualifying
effort.  I had a Ferrari behind, clearly much faster, all over my gearbox
and I'd been shadowing old Brucey for about 3 laps... then as I watched him
outbrake himself slightly I got a run and made a move to take him on the
outside of the next bend.  Well I'll be damned because he gave no ground,
and in my attempts to intimidate him into backing off, I left my braking
just a half-metre too late and despite literally throwing the car sideways
to try to make the bend, I just dropped the left front on the grass - no
coming back from there - and McLaren carried on, most likely with a grin of
satisfaction as he watched me in his mirrors slide off sideways through the
dust into the retaining wall.  Damn! :-)

Mike.

John Walla

GPL Framerate Hit Caused by AI, not graphics

by John Walla » Sat, 26 Sep 1998 04:00:00



That's the section - the right hander between Eschbach and Brunnchen.

Open space? WHAT open space...? :-)

Cheers!
John

John Walla

GPL Framerate Hit Caused by AI, not graphics

by John Walla » Sat, 26 Sep 1998 04:00:00



Why "Antoniusbuche", I believed it to be "Anteniusbuche"? At least
that's what's on my old circuit guide. Anyone know?

Cheers!
John

Wolfgang Prei

GPL Framerate Hit Caused by AI, not graphics

by Wolfgang Prei » Sat, 26 Sep 1998 04:00:00




>>In my report of the Nurburgring Papy Cup, there is a screen shot of
>>Scott Sanford flinging his Ferrari through Antoniusbuche.

>Why "Antoniusbuche", I believed it to be "Anteniusbuche"? At least
>that's what's on my old circuit guide. Anyone know?

"Antoniusbuche" is correct, I believe. "(Der heilige) Antonius" is the
german version of "(St.) Anthony" (the unfashionable first name
derived from it is "Anton".) "Buche" is some kind of tree. I never
heard of anything called "Antenius" in German. Must have been a typo
in your circuit guide.

--
Wolfgang Preiss   \ E-mail copies of replies to this posting are welcome.


rob

GPL Framerate Hit Caused by AI, not graphics

by rob » Sun, 27 Sep 1998 04:00:00

That's my experience precisely.  I'm running an AMD k6 233 and Pure3d.  I
get
exactly the same framerates whether running with all graphic options turned
off
in 640x480 or everything turned on (including in rear-view mirrors) in
800x600.
No difference.  Only the number of opponents and whether I'm currently
sliding
down the track on my rollbar make any difference :)

I will be very interested to hear if the actual game is better.  If I can
only get 15-20
fps with 0-2 opponents onscreen, I'll just have to wait until about next
February
when I get a better computer to buy the game.

As far as the graphics go, I think Sierra did a great job, making wise
compromises
where possible.  At first I thought the graphics were lousy because the
trackside
objects looked bad up close.  As my ability to stay on the track for more
than a second or
two increased, I realized that the trackside objects look ok so long as you
are
flying by them rather than ramming them.  Overall, I don't this is the best
looking game
ever released, and perhaps the sensation of speed could be greater, but it's
still really
good and of course I'm holding out my hopes for the actual game rather than
judging it by what Sierra never meant for us to see.

rob.


>Except that the whole point of my thread was that graphics options amount
to
>twiddle.  The only way to achieve any frame rate results is to lower the #
>of cars in the field (and to avoid driving anywhere near them on the track
>:) ).  That can't be done (nor would we expect or want to) on the fly.

<snip>
>Marc.

Clark Arch

GPL Framerate Hit Caused by AI, not graphics

by Clark Arch » Tue, 29 Sep 1998 04:00:00


>someone said:

>> And please recall that a while ago Intel supposedly tried to put game
>> publishers under pressure to make excessive use of floating point in

I find that hard to believe.  How would Intel "pressure" a software
house?  About all I can think they might have done is point out that
their FPU was fast enough to handle the task better than traditional
integer methods.


>things more complex With Intel CPU's it's actually quicker to use floating
>point than fixed point calculations, so the decision being faced is whether
>to code in the simpler way and a way that will work fine with Intel CPU's,
>but will or incur a slight performance problem with AMD et al. Or.. Use the

Perhaps AMD could be coaxed to deliver a 3DNow! patch like for Quake
II.  Who knows what they could wring out of the engine with those
instructions.  Also, if you own a K6-2, keep your fingers crossed that
the next V2 drivers deliver better performance.

Clark

Matthias Fla

GPL Framerate Hit Caused by AI, not graphics

by Matthias Fla » Tue, 29 Sep 1998 04:00:00



>>In my report of the Nurburgring Papy Cup, there is a screen shot of
>>Scott Sanford flinging his Ferrari through Antoniusbuche.

Compared to the track as it is now, the GPL version of Antoniusbuche
is too extreme. I don't believe it was changed in 1970 apart form the
wider track, and jumping is nowadays IMHO impossible even at 200mph.
Bikers have to be brave there, though, if they want to take it flat
out.

"O" is right. The name derives from a  big "Buche" tree that old
legends linked to St. Antonius. It was cut in the 1930s when the
street left oft the track was build - farmers feared that the old tree
might topple over any day.

--
   _____
 /_______\              .\\ a t t h e a d
I  XT /~~~~                    
I  500\_____       1977' Yamaha XT.Rex 500 Enduro
 \____/\__I_I      http://matthead.home.pages.de/

Matthias Fla

GPL Framerate Hit Caused by AI, not graphics

by Matthias Fla » Tue, 29 Sep 1998 04:00:00



>>The descent  IMHO would be Eschbach, with a left hander, followed by a
>>tighter right-hander into Bruennchen.
>That's the section - the right hander between Eschbach and Brunnchen.

In GPL, the "Brnnchen" sign is placed at the wrong place: approx. 1/2
mile too "soon", somewhere in Wippermann.

Actually, in GPL there are some trees and crowds scattered there.

See http://home.sol.no/~espenm3/pictures_t08_Brnnchen-2.html

Nowadays, an open field, as big as two football fields or so, is on
the left side of the track at the "Brnnchen" straight. A popular
place for fans, because it's directly near the main street, and offers
a lot of space to park (unlike Pflanzgarten). Used as a camp ground
during the 24hours race, but camping is "verboten" on other times.
Last year, I parked a campmobil there over night, and the first thing
I saw the next morning were race cars coming down Eschbach,  warming
up for the VLN race. ;-)

--
   _____
 /_______\              .\\ a t t h e a d
I  XT /~~~~                    
I  500\_____       1977' Yamaha XT.Rex 500 Enduro
 \____/\__I_I      http://matthead.home.pages.de/

asgeir nes?e

GPL Framerate Hit Caused by AI, not graphics

by asgeir nes?e » Thu, 01 Oct 1998 04:00:00

You don't have to be concerned, and I'll explain why:
The combination of a CPU-hungry 3dfx card and a CPU hungry racing sim is a
baaaaad combination, in particular when you have a slowish P133. The 3dfx cards
are simply not the best around for the slow processors! The 3dfx cards put a
heay workload on your CPU. When the AI cars are simulated as well, things just
seems to stop. Put in a rendition card and you'll see things will change...

Could be interesting to see some statistic performance material on how much time
GPL spends in the different sections: How much time spent in the graphics dept,
how much time is spent in the physics dept, the i/o etc... I am one hundred %
sure that Papy has done this analysis, because it is imperative in real time
apps... Anyway, these figures would certainly reveal some info on the invention
of this game, but it would also give valuable info on where your systems sucks,
or where dollars are best spent...

On hardware requirements, I think I might be able to sum things up:
1) The slow processors (I'd say up to around P200) positively need Rendition
cards in order to play at any decency (I think the Stealth II and Thriller might
work even with your P133...)
2) The faster processors (PII) can use Voodoo I and II, and Rendition with great
success, doesn't matter which graphics card!
3) The slow non-Intel CPUs might be even slower than slower Intel CPUs because
they lack fast floating point operations, if they're supported at all!

If this is the price for the most advanced physics around, I am more than
willing to pay it! The constraint of running on old computers would retard the
games development, you cannot possibly mean that Papy should make games playable
on yesterdays computers...

---Asgeir---


> <snipped>
> I am concerned for two reasons:


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