PS1 Emulation vs PS1 on the PS2

[Ilya-v]

So... The plugins and the EPSXE emulation is "Almost perfect"

But I have a few Problems/Questions for you expert guys.

Numero Uno (#1): Compared to playing the games on my PS2,
The floors and polygons are SHAKING (Vibrating) all the time (epsxe),
whether on the ps2 they are "Floor Solid".
They are also changing in Shading while Shaking.
All the plugins in the world would NOT solve the "Shaking floors/Polygons"
problem.
Common guys YOU CAN DO IT (more stable and solid polygon emulation).

You know what I'm talking about (Ps2 Backwards Compatibility is more solid).

YES I have an ATI
and YES, ATI SUCKS

[Hard core Rikki]

.... oh, these "artefacts" (texture warping and such ones... doesnt happen with software-based plugins, btw)

Name a game.
Specify plugins.
Specify settings.

btw, Catalyst 8.5 or higher is very recommended.

[Ilya-v]

Games Above...

Especial Ape Escape and Tomb Raider, floors and walls are shaking (every polygon separatlly) when there is movement.
On all 3D games.
NOT 2D.

The plugin is VERY FINE (Pete's OpenGL2 2.9). Its not the plugin, I don't see any glitches or bugs.
I think the problem is how the GPU is translating the game...

On the PS2 the Floors are Solid, and not made of x polygons(actually they are but you CAN'T see it) that move separatlly independent of each other, they seem more like one unit.

*NOTE
The shaking/moving effect of the polygons is very minute!
But still effects the pleasure of playing a perfect game.
Try the game on your PS2 and see the Difference.
Yes it does happen on the Software plugin, It happens on ALL plugins (NOT a PLUGIN PROB)

[Hard core Rikki]

You're comparing software-base emulation (of the PS2) to hardware-accelerated emulation (with PeteOGL2), when the PEOPS would be the more accurate compareason (while also still better than PS2's).
Software-based graphic rendering itself does not have the "shortcomings" you mention (you can check so either through usage of the internal soft-renderer or PEOPS)

Which Catalyst drivers do you have? version 8.5 or later are very recommended for a reason...

[Ilya-v]

Catalyst 8.6, June 18 2008.

The Soft (PEOPS) Plugin reacts the same.
Its not a Plugin problem, its the TOO ACCURATE PS1 emulation.
On the ps1 the polygons ARE shaking like on the epsxe, But on the Ps2 they are more solid (not moving).

I guess I'll have to wait.

[hanibal81]

Doesn't seem like a problem within emulation or something, mostly a request to coders

[Ilya-v]

yes !!!!!!

[Kazuya Mishima]

Lol, nobody knows about this anymore?

There is no "C'mon guys, you can do it". Please investigate first as it's been answered too many times. You could have found this searching for shaking polygons.

The Psx lacks z-buffer so it doesn't know the depth of the polygons and thus they are shaking. Let's not mention the lack of subpixel accuracy too which also causes the shaking.

It's not the Ps2, it's not even the Psone. The one thing that makes it seem as if the polygons are in their place it's the TV. It's blurry look will make it seem normal but when you use a monitor you will notice the real graphics.

Try tv-out while using epsxe and you'll see. Or you could also try the option to emulate the blurryness of the tv available in Pete's plugins.

[hanibal81]

Or he may also use Scanlines and set their number to <100.

[maurocds]

wtf

the ps2 only has bilineal filter and speed loading options for better emulation of psx games

the wall and floor shaking is called perspective correction, so you can´t fix it because the psx cannot do it

in the ps2 there is the same shaking, you just need lo look better

maybe it´s because the ps2 works at 640*480, while epsxe works at very high res

[hushypushy]

To clarify:

The polygons distort (extremely noticeable in FF8/9, for example) due to the lack of a Z-buffer. Essentially they're creating the illusion of 3D with only two dimensions, which works pretty well...by late 90's standards. It tends to look fairly primitive today, look at MGS for a visual example.

The polygons skip around due to lack of subpixel accuracy. When you're using a Playstation, you see it on your TV as 320x240. Each polygon moves one pixel. When you're playing on your PC at 1280x960, it moves three times as far, and nowhere in between. Thus, it looks like it's skipping around. As Kazuya Mishima mentioned, the relative sharpness of a monitor versus a TV is also a factor.

These are inherent flaws or quirks or whatever you want to call them of the Playstation architecture itself. You can get rid of the problem by using a software graphics plugin and/or playing at the lowest possible resolution.

[Shendo]

You should put that into FAQ hushy as it's asked every once in a while.

[Squall-Leonhart]

using an interlaced resolution can also help.

[Kazuya Mishima]

And how do you choose between interlaced and progresive?

[Squall-Leonhart]

you would have to create it in the video card cp.

using scanlines set to 100 also helps.

[NexXxus]

yes its a known problem since the PS1 was born.
The GPU just can't handle Z clipping and perspective correction well.

and this happens afaik on the PS2 too.