rec.autos.simulators

F12002 - Is it worth it?

David G Fishe

F12002 - Is it worth it?

by David G Fishe » Wed, 19 Jun 2002 12:21:08



Uh, I can sure as hell tell the difference between 24/36fps, and 80 fps.

80fps looks much better.

David G Fisher

Gerry Aitke

F12002 - Is it worth it?

by Gerry Aitke » Wed, 19 Jun 2002 15:31:45


> I've been playing around with the FOV and I think Jason is right - GPL and
> N2002 do appear to be correctly scaled, it's simply a combination of low
> detail track textures, stuttery frame rates and wide FOVs that gives the
> wrong impression of speed...

Sounds like your pc isn't setup right. Wide FOV give a better impression
of speed as far as i'm concerned. Can you explain why you think the
inverse is true?

Gerry

na_bike

F12002 - Is it worth it?

by na_bike » Wed, 19 Jun 2002 18:16:28





>>GPL = 36fps - That's bad enough, but I also get the impression of incorrect
>>3D scaling a la GP3 (also happens in the NASCAR series)   People often
>>comment that F1200X has a good sensation of speed.   It's not really - it's
>>just a correct sensation due to the correct 3D scaling.  The future of sims
>>is locked at at least 60fps to allow real-world motion visual feedback.  ISI
>>are already there.   A good physics engine demands a proper 3D graphics
>>physics engine to allow full visual feedback.

>What do you need more than 36fps for? The human eye can't notice individual
>images at 24fps or more (we perceive them as a fluent motion). No, TV doesn't
>use 50 or 60 frames per second - that's 50 or 60,*fields* per second they use,
>since the image is interlaced, it's divided into an odd and an even field
>(the odd and even-numbered lines of the image) because of design, it's easier
>to draw half the image and later the other half from top to bottom each time
>than having to draw the whole image from top to bottom in a single sweep.
>(Don't make me go into the technical details here, it'd be too much of an OT)

[sigh]
Goy Larse

F12002 - Is it worth it?

by Goy Larse » Wed, 19 Jun 2002 18:47:48






> >>GPL = 36fps - That's bad enough, but I also get the impression of incorrect
> >>3D scaling a la GP3 (also happens in the NASCAR series)   People often
> >>comment that F1200X has a good sensation of speed.   It's not really - it's
> >>just a correct sensation due to the correct 3D scaling.  The future of sims
> >>is locked at at least 60fps to allow real-world motion visual feedback.  ISI
> >>are already there.   A good physics engine demands a proper 3D graphics
> >>physics engine to allow full visual feedback.

> >What do you need more than 36fps for? The human eye can't notice individual
> >images at 24fps or more (we perceive them as a fluent motion). No, TV doesn't
> >use 50 or 60 frames per second - that's 50 or 60,*fields* per second they use,
> >since the image is interlaced, it's divided into an odd and an even field
> >(the odd and even-numbered lines of the image) because of design, it's easier
> >to draw half the image and later the other half from top to bottom each time
> >than having to draw the whole image from top to bottom in a single sweep.
> >(Don't make me go into the technical details here, it'd be too much of an OT)

> [sigh]

LOLOL

Beers and cheers
(uncle) Goy

"The Pits"    http://www.theuspits.com/

"A man is only as old as the woman he feels"
--Groucho Marx--

Damien Smit

F12002 - Is it worth it?

by Damien Smit » Wed, 19 Jun 2002 21:47:50

Ha!  I'm sure the movie studios would love you to believe that!

Correct, but even 50 fields per second gives a much more fluent motion than
25 frames per second.  You'll notice that on game consoles, some games run
at 25(or 30) fps and others run at 50 (or 60) fps and look dramatically
better IMO.

OT)

I would recommend that you learn the technical details yourself first. ; )

Damien Smit

F12002 - Is it worth it?

by Damien Smit » Wed, 19 Jun 2002 22:27:56

Your PC runs GPL and N2002 v-synced, liquid-smooth at 60fps?

Yeah, I think you may be right on this one, when using the same FOV and
***pit position, the scenary in GPL and F12002 move past at about the same
speed.  I can only suggest that it's purely the frame-rate thing that makes
F12002's motion seem so much better.   It's a bizarre setting, FOV - you
start playing around with it and after a while nothing seems right. : )

Ruud van Ga

F12002 - Is it worth it?

by Ruud van Ga » Wed, 19 Jun 2002 23:38:59

On Tue, 18 Jun 2002 23:27:56 +1000, "Damien Smith"


>> Sounds like your pc isn't setup right.

>Your PC runs GPL and N2002 v-synced, liquid-smooth at 60fps?

>> Wide FOV give a better impression
>> of speed as far as i'm concerned. Can you explain why you think the
>> inverse is true?

>Yeah, I think you may be right on this one, when using the same FOV and
>cockpit position, the scenary in GPL and F12002 move past at about the same
>speed.  I can only suggest that it's purely the frame-rate thing that makes
>F12002's motion seem so much better.   It's a bizarre setting, FOV - you
>start playing around with it and after a while nothing seems right. : )

That's because no FOV *is* right. It's all a compromise between sense
of speed and more severe distortion of the picture.

Ruud van Gaal
Free car sim: http://www.racer.nl/
Pencil art  : http://www.marketgraph.nl/gallery/

David Powel

F12002 - Is it worth it?

by David Powel » Thu, 20 Jun 2002 00:03:52

people only use 10% gas on brake to allow use of sub 52% bias brakes...just
exploiting the fact GPL is old and doesnt model brake fade....



> > GPL is one of my favourite sims.  It's still the best all-round sim
> > available.  However.....

> > GPL = 36fps - That's bad enough, but I also get the impression of
incorrect
> > 3D scaling a la GP3

> An example from GLP please? What do I look for to see this 'effect' you
> describe?

> > (also happens in the NASCAR series)

> Example from 2002 too please?

> > People often
> > comment that F1200X has a good sensation of speed.   It's not really -
it's
> > just a correct sensation due to the correct 3D scaling.  The future of
sims
> > is locked at at least 60fps to allow real-world motion visual feedback.
ISI
> > are already there.   A good physics engine demands a proper 3D graphics
> > physics engine to allow full visual feedback.

> Can you thoroughly explain what you mean? That is a '3D graphics physics
> engine'?

> > I could also mention the exaggerated braking in GPL when throttle is
applied

> I don't understand what you mean here. Do you mean the brakes work
> better if you keep your 'foot in' under braking?

> I don't dispute that you say is true, with regard to any of the above
> (I've not noticed it though) but your statements are somewhat vague and
> woolly. I'm here to be convinced if adequate description and example can
> be provided.

> TIA

> Gerry

David Powel

F12002 - Is it worth it?

by David Powel » Thu, 20 Jun 2002 00:05:43

Actually stopping distances are longer with gas used, but times are faster
as using both pedals you can trailbake more effectively right to the
apex...try that without using gas on 50% BB youll rotate of the track
everytime...


Gerry Aitke

F12002 - Is it worth it?

by Gerry Aitke » Thu, 20 Jun 2002 01:22:49


> people only use 10% gas on brake to allow use of sub 52% bias brakes...just
> exploiting the fact GPL is old and doesnt model brake fade....

Not me, Dave, too busy heel & toeing. <G>

Gerry

Joe6

F12002 - Is it worth it?

by Joe6 » Thu, 20 Jun 2002 09:22:43



Must ... resist ... urge ... to correct ... oldest ... usenet ....
myth ...

Whew, barely made it out of this thread without my *** pressure
rising!

Dave Henri

F12002 - Is it worth it?

by Dave Henri » Thu, 20 Jun 2002 09:48:32




> >What do you need more than 36fps for? The human eye can't notice
individual
> >images at 24fps or more (we perceive them as a fluent motion).

> Must ... resist ... urge ... to correct ... oldest ... usenet ....
> myth ...

> Whew, barely made it out of this thread without my *** pressure
> rising!

   You mean you passed on commenting how English folks score one goal in 4
years and they are happy/ecstatic about it???   Your self control IS
amazing!  :>
dave henrie
jason moy

F12002 - Is it worth it?

by jason moy » Fri, 21 Jun 2002 02:05:21


> Sounds like your pc isn't setup right. Wide FOV give a better impression
> of speed as far as i'm concerned. Can you explain why you think the
> inverse is true?

I agree with you, too.  The reason Papy sims seem slow is the lack of
of peripheral vision because of the narrow FOV.

I tend to prefer Papy's FOV, but really IMHO the ultimate setup for
those who need the 'sense of speed' feeling would be 3 monitors.
Didn't someone manage to get GPL running with 3 monitors and a wide
FOV?  I remember seeing a post or article about it a little while
ago...  I would think the sense of speed would be impressive (and
probably distracting from the task at hand, really).

Jason

Gerry Aitke

F12002 - Is it worth it?

by Gerry Aitke » Fri, 21 Jun 2002 04:38:22



> > Sounds like your pc isn't setup right. Wide FOV give a better impression
> > of speed as far as i'm concerned. Can you explain why you think the
> > inverse is true?

> I agree with you, too.  The reason Papy sims seem slow is the lack of
> of peripheral vision because of the narrow FOV.

> I tend to prefer Papy's FOV, but really IMHO the ultimate setup for
> those who need the 'sense of speed' feeling would be 3 monitors.
> Didn't someone manage to get GPL running with 3 monitors and a wide
> FOV?  I remember seeing a post or article about it a little while
> ago...  I would think the sense of speed would be impressive (and
> probably distracting from the task at hand, really).

I've tried the three monitor setup you're talking about. It wasn't the
better impression of speed it gave, more, the MUCH better situation
awareness it afforded, that really impressed me.

Gerry

mach

F12002 - Is it worth it?

by mach » Fri, 21 Jun 2002 13:16:43





>> On Mon, 17 Jun 2002 00:22:39 +1000, "Damien Smith"

>> What do you need more than 36fps for? The human eye can't notice
>individual
>> images at 24fps or more (we perceive them as a fluent motion).

>Uh, I can sure as hell tell the difference between 24/36fps, and 80 fps.

>80fps looks much better.

>David G Fisher

Well, I asked a perfectly rational question and so far this has been
the only decent answer to it... (everyone else, please read again what
I wrote, and do it more carefully this time)
So I started a mental exercise by myself. What do you get with a higher
framerate? Well, you're feeding your retinas more images than it can discern,
so in effect what you're seeing is blurred. Hmmm... Now about the computers:
they render highly detailed images. Why would you want to perceive them blurred?
But of course, IRL, when you're driving at high speeds, you *do* see everything
(that is moving at a very different speed than yours, of course) around you
blurred. Bingo. But wouldn't it be easier to just blur the image drawn on the
screen? A quick Google search turned out that apparently they haven't found
a way to do right that, so the only way they can actually "fool" the eye
is by reproducing the process that actually takes place, that is, feeding
the retinas the highest possible amount of images the monitor scan frequency
(and the video rendering algorithms) allow to reproduce the motion blur.
So, it turns out that the illusion of high speed is otherwise missing...
but frankly, that's an aspect of real driving I'd rather see as in GPL.

--
__________   ____---____       Marco Antonio  Checa  Funcke
\_________D /-/---_----'      Santiago de Surco, Lima, Peru
       _H__/_/                      http://machf.tripod.com
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