Re: [Tuxmath-devel] Repost??? sdl & fullscreen

[Samuel H. <cri...@ge...>]

On Monday 10 September 2001  5:57pm, Calvin Arndt wrote:
> heres a picture of it on this system taken with my camera its not a
> good
> shot the screen is very clear but you can see the two lines thick one
> running down left side of screen and thin one running across top...

This is because your modelines aren't set correctly under XFree86. (As I said 
before)

> this is across the board on all sdl apps I've tested! It does seem to
> be
> specfic to hardware since the video cards it does it on , it always
> does it
> on, sometimes these line are left on the screen after the programs
> exit...

It is not specific of your hardware, but due to your set up.

As I recall, you have X 3.3.6, which means that setting up your modelines is 
a bit tricky (so it's no wonder that they aren't set correctly... this is one 
of the last great arcane X issues to be resolved by the 4.0 release ;-)

But basically, you want to look in your XF86Config file (which is usually in 
/etc/X11) and find the "Modeline" lines. What you should have is a serious of 
settings for various resolutions (really, any resolutions you want to 
support). Here's what mine used to look like in X 3.3.6:

Modeline "1152x864"    135.00   1152 1456 1584 1760    864  864  876  908

Modeline "1024x768"     65.00   1024 1068 1212 1248    768  779  785  870 
-hsync -vsync

Modeline "800x600"      50.00    800  820  940 1068    600  601  607  622 
+hsync +vsync

Modeline "640x480"      31.50    640  652  716  840    480  481  484  500 
-hsync -vsync

Then you want to check and make sure that all resolutions you want to support 
are listed in your "Screen" section. Again, mine looked like this in X 3.3.6:

Section "Screen"
    Driver      "accel"
    Device      "Sam's Card"
    Monitor     "Sam's Monitor"
    DefaultColorDepth 16
    Subsection "Display"
        Depth       8
        Modes       "1152x864" "1024x768" "800x600" "640x480"
        ViewPort    0 0
    EndSubsection
EndSection

Now, figuring out your modelines is the real hard part, and I'd recommend 
taking a look at the "Video Timings Howto":
http://www.linuxdoc.org/HOWTO/XFree86-Video-Timings-HOWTO/index.html

You might also want to try and learn how to use "xvidtune" (which should 
already be installed) which can allow you to tweak these settings and which 
spits out the modelines ready for you to insert into your XF86Config file.

However, if you update to X 4.0, you probably don't need to worry about all 
of this junk. X 4.0 is supposed to take care of this for you.

> IMHO perf or not (and at 500mhz perf is not an issue) windowed is
> better!

If your fullscreen mode was setup properly, and if your hardware is 
supported, you'd see a noticable difference in performance.

-- 
Sam "Criswell" Hart <cri...@ge...> AIM, Yahoo!: <criswell4069>
Homepage: < http://www.geekcomix.com/snh/ >
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