>>12114031
>you're using some new renderer or something
Technically it is "something", but it's very subtle and basically only noticeable in static.
It's a reshade port of CRT-Guest shader (the original shader is probably the most popular shader used in emulators nowadays). I edited the settings trying to make it look like 2% more CRT-ish than the original picture, and while of course it's not perfect, it does make difference sometimes.
Also the screenshots are .jpg because original .png are too big, so the compression artifacts might also affect the look since it's a shitload of microscopic details on the picture.
Other than that it's just Ironwail with chunky vanilla look, no antisotropic filtering or anti-aliasing or anything like that, and of course GL_NEAREST texture mode because even the default "Classic" option, GL_NEAREST_MIPMAP_LINEAR, blurs the shit out of the textures in the distance.

tl;dr It's just Quake. Thanks uncle Carmack.