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Berlin Packages Released For Debian
A reader writes: "Berlin ? testing packages for Debian are available from the Debian website and should soon be moved to unstable, according to their the Berlin consortium website." The Berlin website (which looks great, IMHO) has an excellent architecture FAQ - the Berlin vs. X is very well done.Update: 09/01 12:41 PM GMT by H : A number of people have e-mailed me about some....wonkiness...if you view the Berlin vs X page using Internet Explorer. I'd advise using something else.
Some of the advantages touted for Berlin vs. X actually sound like disadvantages to me.... In other words, Berlin takes the Mac approach of taking UI decisions away from app developers.
There is a reason the Mac is considered a good user interface and all X Window UI's bad. Funny how that works.
Seriously, though, if nothing else, a user experience must be consistent. All X Window UI's are nothing close to consistent. Windows is at least somewhat consistent. The Mac, of course, deals best with consistency.
> It's a combination windowing system with ...and I thought X was bloated. No thanks, guys.
> toolkits for a consisten user interface?
>
The X server is quite lightweight, but the clients are not: think at the number of toolkit you use simultaneously: Qt, GTK+, Tk, Lesstiff..
This is memory bloat!!
Worse, those toolkit has usually some troubles working with the others: cut-copy-paste problems sometimes, poor look&feel integration etc..
And think about communications between the client and the server:
- with X you have LOTS of very low level communications between the client and the server (draw a rectangle here, etc..).
Have you done XLib programming?
If no, you'd be surprised to see how many events the X server send to the clients..
- with Berlin, usually a client would use higher level primitives that the server which would manage: less bandwith usage, improved latency.
X main's advantage is that it works now, but I feel that Berlin's design is cleaner IMHO.
You talk about the amazing (my word) performance of your 2D hardware and how using OpenGL will toss all that out the window.
Well, I'm gonna let you on to a little secret that game programmers know all too well. Doing 2D graphics is usually faster if you use the 3D hardware to do it. Now, it does depend on what you're doing, but overall, putting sprites onto polygons and blitting the polygons to the screen is faster than drawing the sprites on the screen directly.
I know these seems odd, but it's really just a fact of the video cards being great for 3D (or bad for 2D, if you want to look at it that way). There's just been so much of a push for 3D in cards, and not too many people have been asking for better 2D performance, so the current crop of video cards is kinda lop-sided.
Microsoft even stopped developing new versions of DirectDraw. They say that if you want to make 2D applications, use Direct3D. This wasn't because DirectDraw was done, or because they want all new games to be 3D, but because 2D graphics API's are becoming insufficient.
Unless i missed something, no one was talking about moving the windows around in 3D. It's strictly a performance thing.
ben.c
I don't think there's a need for an replacement for X. It's great, and it works. But, most of the time I deal with X, I find it confusing, difficult to install and really hard to handle. First of all, it needs good setup tools. Correct me if I'm wrong, but I haven't found any good, complete ones for XFree86 4.1.0. There's xf86cfg but that didn't really work, uses the highest screen res it finds which makes it flicker and almost unreadable and is far from complete. It doesn't cover all features of X. There's XFsetup, but the readme said that it wasn't compatible with 4.1.0. There's of course xf86config but that's a joke in terms of usability. And the config generated by XFree86 -configure - a config file doesn't tell me what I have to do, it doesn't help me in any way.
Setting up DRI must be easy. Like copy binary, tell which driver to load. But, I have to recompile stuff and get Glide3 for Voodoos. That's annoying.
X needs better mouse support, I think it's just ridiculus that I have to edit config files just to get my mouse wheel working. And for the mouse pointers, where's color, alpha blending, shadows and whatso ever?
My last point is that X has all this stuff for exporting a screen over a network included. Much of the (great) functionalty of X is not used on home computers because people usually don't need it. What about a cut down version of XFree86, streamlined, compact with a decent setup tool that uses NCurses? That would, in my opinion, be sufficent to eliminate the need for things like Berlin. I respect those peoples work but I think they shouldn't "re-invent the wheel", like they taught me in my OOP class :-)
Um... I didn't do it!
Secondly, the idea of running EVERYTHING through OpenGL is particularly bothering. Most video hardware has some very specific optimisations for 2D work and by going through a specific 3D interface you are tossing all those performance advantages out the window.
As Yokaze mentioned, a rectangular window is two triangles. Two. The fact that DirectX 8's 2D API is simply Direct3D 8 with orthographic projection shows that Microsoft has begun to understand this, as Shelrem mentioned. Besides, "OpenGL" != "3D"; OpenGL is just a Graphics Language with an Open specification.
The only difference between rotation and scaling of textures in 2D and in 3D is that in 3D perspective projection, there's a divide by z every few pixels to fixup textures if the plane isn't parallel to the x axis. In 3D parallel projection (of which 2D is a special case), or in 3D perspective with the triangle's plane parallel to the x axis (reminiscent of Super NES Mode 7), it's just an affine transformation (two adds per pixel), that is, unless you count elliptical filtering.
Most people have a hard enough time keeping a 2D desktop organised that they'd hardly want things at arbitrary 3D angles!!
You'd be surprised what you can do with the middle mouse button mapped to toggle between the x-y and x-z plane, especially if you map the mouse's x-axis to theta and rotate the view. With the typical 90 degree field-of-view of most FPS game engines, you already have four desktops.
Will I retire or break 10K?
An application demanding that a double-right-click behave in a particular fashion is only an innovation in the Microsoft sense of the term.
Berlin's message is this: application software micromanaging the user interface is a dead end, and rude too. Introducing a level of indirection gives the user control by plugging and unplugging toolkits to do things the app programmer never thought of. If the UI toolkit becomes scriptable, every well-formed Berlin client program becomes scriptable. If the UI toolkit supports blind users' I/O devices, every well-formed Berlin client supports blind users' I/O devices.If you want to innovate, then innovate a new toolkit. I suspect you're less interested in innovation than shoving your ideas down the users' throats.
-jhp
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