Images mapped on polygons

[DustyPorViva]

Well, I was messing around with polygons, and I noticed something. I haven't dug deep into 3D enough to know how mapping textures on polygons work and what not, so excuse my ignorance...
Either way, take note of my attachments. The first image is of an image mapped on a 3 point polygon. See how clear and sharp the resize is? It's almost like a vector image... then add another point to the polygon, and see the difference.
Someone just tell me if this is possible or not, I'd like the same texturing method done with 4 point polygon's as done with the 3 point. The mapping is so much clearer and appealing to the eye on the first attachment. I take it though, that this is all being done the same way a 3D engine handles mapping and polygons, so I don't know if it's possible to change this.

[zokemon]

Odd...

[Admins]

Your door is a special case. Usually zooming pixel graphics will make it look quite awful because you see all the pixels as big rectangles, or pixels or lines of pixels are disappearing if you just zoom it to 90% of it's original size. That's why Graal is using options for smoothing if it's drawing a single image as a rectangle on the screen. If you only draw a part of an image or only triangles then it will use the non-smoothed methods.

[DustyPorViva]

I've used different images and they all do the same thing. Triangles will zoom them in really nice, while a full square smooths it out.
And to be honest, I kind of like nearest-neighbor over smoothing it out.

[zokemon]

this.render = ?
(Idea)