Nun, ich denke dem Otto-Normal-Verbraucher gehts nicht darum wie akkurat ein Emulator ist, sondern das ein Spiel läuft und gut aussieht.

I like PlayStation, its games an everything connected with it,
looks like I have some good memories left from childhood.
I didn't liked emulation precise and, in general, wanted to
do something by myself.

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Target.
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The target is to make a plugin, which emulates the PSX GPU
with maximum precision, and using of all the methods of
grapics improvement.

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Realization.
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Setup dialogue.

GUI is written on gtk, this, of course, requires installation
of gtk-runtime, I've seen lots of comments of this, I can
only say, that if you can download an updated version of
DirectX every month, so you can download GTK as well and use
the GUI, if only you want it. If not - i won't insist on it.

Why GTK? It's an easy question. Because the plugin is
cross-platform and I'm not going to write a GUI on a native API
for _every_ OS, I'd better use this time for emulation improvement.

Emulation.

You should already understood this by reading the Target section,
but I'll better write it directly: I don't care, how much
resources will be needed for emulation and that the plugin is
already slow enough.

People often ask, if the plugin will be faster.
I swear, that it will be slower.
For now only the geometry is rendered correctly, PSX GPU implements some exotic
blending algorithm and my research shows that we'll need noticeably more
operations per pixel as we approach the correct color rendering.

Precise rendering timings are not implemented either.
The calculations are available, but there is no appropriate interface in the emulator,
plus, if implemented, it would make rendering even slower.

Implemented, though disabled, a texture cache emulation.
There is no visible improvement, just an increase in CPU load.

Picture enhancement methods.

Internal resolution.
The most powerful method is an increase of the internal resolution.
This method allows you to increase the resolution of the image independently
in width and height by an arbitrary integer factor. In the manual I wrote that
the best in my opinion is the resolution of 2x2.
This does not mean that I cannot add larger factors, although it is somewhat inconvenient.
I believe that further increase in resolution degrades the image, as "soapy" textures
with perfect geometry leave a bad impression. Generally there is no restriction,
I can make it 8x8, which is equal to setting "Ultra / Ultra" (I guess)
in the hardware plugin OGL2 by Pete Bernert, but I doubt you can find a
computer capable of at least 3 fps in this resolution.

24-bit renderer.
Console has a 15-bit renderer, that's why Gouraud-shaded polygons have so
unpleasant colors. When you turn this mode, renderer goes into 24-bit mode
and the picture in this case is not only looks as good as on hardware plugins,
but also doesn't have their drawbacks, you should turn "Gouraud shaded primitives"
option for this. If you turn the "All primitives" mode, I'll tear your hands away ,
because in this case you'll see the artefacts similar to hardware plugins, like
various different colored borders around the picture.

Filters.
Then goes filters, btw, very good ones: Super Eagle, Sal, Hq, Scale.
For those who like them, I don't.
But there are 'fans' of them, so I've decided to add them.
I should say, that they're also very hardware-dependant, especially while
working in pair with the increased internal resolution.

Shaders.
Realized a partial support for shaders written for gpuPeteOGL2,
"partial" - because I don't know exact interface, but even at this stage
the result is very good.
Only glsl shaders are supported.

Issues.

Possible aspect ratio issues.
TV is something %), it's totally useless to test an output on some particular
TV, because every TV has a slightly (or totally) different picture (in terms
of aspect and picture position), due to different factory settings and custom
user settings, I've tried to make the picture "like on some average TV",
but I'm not sure in anything, some output measurements should also be redone.

Some interlacing issues,
because the counters are hidden from gpu, it's not possible to determine
some moments precisely, which may affect/affects the picture.