Actually I only had an image but here it is: http://www.quaddicted.com/software-vs-glquake/software-vs-glquake-non-square-pixels/ 

makes sense! 

GLQuake

resamples all of them using a crappy "nearest pixel" filter. The result is that you see specific rows or columns of pixels being repeated. Spirit's screenshot shows this, you can see what looks like columns of double-wide pixels but actually that's just two columns with the same exact pixel colors.

Fitzquake

1. hud/menu graphics, model skins, and sprite frames: images are padded with empty pixels to make them powers of two, and texture coordinates are modified so you only see the actual artwork part of the image. This means they look as good as power-of-two textures, since there is no resampling or distortion.

2. world textures: since they have to be able to tile, these textures can't be padded, so they are resampled using bilinear sampling to be a power-of-two size. This still degrades the image somewhat, but looks better than glquake's resampling.

Aguirre's glquake

Aguirre does bilinear resampling, similar to fitzquake, but for all images. So menu/hud/skins/sprites are also somewhat degraded, but not as bad as glquake.

Other engines

not sure, i haven't researched other engines. 

Hello there, I was making some maps for Quake and Hexen 2, but in one of my maps, in some places when I crouch I fall through the floor and keep falling. I tried everything...Anybody here experienced such thing? I�m using Unofficial Quake engine(UQE). 

I was fooling around with my new machine trying to get Hammer to work. The same shit was happening again with the selection bug in the 3D view. I couldn't believe it. REALLY?! Still?

But, if you install the latest Catalyst drivers from the ATI site the bug goes away! So if you're an ATI user who has been wanting to use Hammer, you're all clear! It finally works. 

Mathuzzz some times when we rotate textures and objects some of then give some weardo leaks is that the case? 

you can't crouch in quake..? are you using a mod? it's possible it's a bug in the mod or something. 

Actually it happenes in Hexen, where you can crouch.

Trinca, yes I made some texture scaling/manipulating there, but when I deleted all those brushes, the problem remained. 

Made of wedges?

It could be an off-grid collision bug. 

If there's complicated brushwork for the walls / floor that's not on the grid it can cause hull issues - the player being able to move outside hull0. 

OK, so I found out that there were some complicated brushes, it took me the whole day to trace them. It is really a pain to make a little realistic and complicated outdoor place there with Quark. 

For complicated stuff you can make it a .mdl - but chances are you don't have the software, knowhow or that Hexen doesn't support placement of .mdls and would have to be coded in (I haven't made anything in it).

If you can place .mdl then you can also place .bsp. This is something I've been experimenting with recently and having good results.

You'll probably need to code it into the game though, or ask someone to do it for you. I do have a piece of code that will do it, but I don't know how compatible it will be with Hexen, and it's not finished yet either - doesn't have collision. 

OK ... so which light compiler is the one to use on Windows these days? I'd like something with sunlight and colored lighting support... 

Tyrann's - sorry no link.

But its very limited compared to AguirRe's (which doesn't have coloured light) in that it only supports so many light entities so big maps aren't feasible.

I think one of Spirit's bounties is to add coloured light support to AguirRe's tools. 

Tyrlite 0.99e

You are allowed 1 sun, unlike AguirRe's tool which lets you have more than one sun.

As for the entity limit, someone posted a link to a hacked version that was made on my request (!) but I havent had a chance to use yet :O

I forget where it was too 

OK ... am I missing this feature? Does Worldcraft/Hammer have a quick way to automatically link up entities via target/targetname? It must, right? I don't have to manually label them all, do I? 

Though there's copy paste. 

Really? Huh. I thought that was a standard feature in Quake based editors these days. 

Is very cumbersome in many ways. In modern hammer (Source hammer) you can auto-complete a lot of the names if you have already named your entities, which is alright, but no shortcuts afaik for targeting those entities. Not sure about HL1 hammer. 

ability to have one field open in the enitity window and select point entities in the 2D biew in the background without having to shut the dialogue down.

Dont use it Willem. 

Very useful, though it doesn't provide you any sort of graphical representation, like a trigger tree or anything. 

i can't stand the auto targetting stuff. i used it a bit in doom3edit but when i'd go back and try to check entity links, i could never figure out where t73 matched and what the heck does t94 go to?? o.0 :P
but then, when i look at the q1 source maps, i saw (to some dismay) that id used that for all their maps. o.o
i guess it's just one of my weird things that i do, but i prefer to spend an extra second to name my entity 'mainRoom_bigDoor2_left' than 't44'. :P 

BspEditor allows you to highlight your trigger and then CTRL/left-click your target to auto complete, but like necros, I prefer to give myself (er, my map elements) meaningful target names. 

i should mention that doom3edit does the auto targeting right at least. i learnt later than if you name your targeted entity first, then autotarget a trigger at it, it will assign a 'target' key that matches the targetname (instead of rewriting) 

So it does in BspEditor. Well, you live and learn.