[lazarus] New gtkglarea demo
Magus
kirby-2 at web.de
Sun Oct 21 14:44:18 EDT 2001
Am Donnerstag, 18. Oktober 2001 21:44 schrieb Shane Miller:
Well, good question.
I guess it should be part of XFree86. Which Linux distribution do you use? In
Debian the package might be xlibmesa or something like that (you can download
Debian packages at http://packages.debian.org/). If you use an RPM based
system, I suggest you just search for "libglx.a" on http://www.rpmfind.net/.
Mata ne,
Magus
> OK, then where do I get that? I don't have that on my system. I went to
> http://dri.sourceforge.net/ but it appears they only have it for 2.4.5
> kernel (http://www.xfree86.org/~alanh/)
>
> Shane
>
> >>> kirby-2 at web.de 10/18/01 12:51PM >>>
>
> Am Donnerstag, 18. Oktober 2001 20:02 schrieb Shane Miller:
> > Right, but is there a .so file or something I can look for to determine
> > where glx is installed to set to my modulespath in the x congif file?
>
> Ah :)
> Yeah, I just looked in my /usr/X11/lib/modules directory. There's a
> "/usr/X11/lib/modules/extensions/libglx.a" there. So you should look for a
> "libglx.a" :)
>
> Mata ne,
> Magus
>
> > Right, but is there a .so file or something I can look for to determine
> > where glx is installed to set to my modulespath in the x congif file?
> >
> > I need to see that to verify that I actually have glx installed.
> > SHane
> >
> > >>> kirby-2 at web.de 10/18/01 11:32AM >>>
> >
> > The OpenGL module's name is "glx".
> > For Direct Rendering you also need "dri" and "drm" (maybe one of these
> > starts the other one automatically... maybe...).
> >
> > Mata ne,
> > Magus
> >
> > > What is the module's actual name? Where should it be located. I
> > > didn't have a MODULE section so I created one but now it says it can't
> > > find that module. Is the file the libGL.so or is it something else?
> > >
> > > Shane
> > >
> > > >>> kirby-2 at web.de 10/18/01 06:29AM >>>
> > > >
> > > > How do I determine my Kernel version.
> > >
> > > Try "uname -r".
> > > For example:
> > > mulk at mulkomp:~ > uname -r
> > > 2.4.11-pre5
> > > mulk at mulkomp:~ >
> > >
> > > > Do I really need to compile something into the kernel
> > > > to get this to work? Is loading modules enough?
> > >
> > > Usually you just have to load the module. But I prefer compiling all my
> > > stuff into the kernel :)
> > > Besides, you only need to do something about the kernel (be it loading
> > > modules or recompiling) if you want to use hardware acceleration.
> > >
> > > Just do what Mattias told you.
> > > You may want to redirect startx's output to some logfile and read it
> > > afterwards, i.e.: startx >x.log 2>x.err
> > > One of the two files (x.log or x.err) will be empty because X writes
> > > everything to stderr (or stdout, respectively), but I can't recall
> > > which one
> > >
> > > :-)
> > >
> > > Just look for something like "Direct Rendering" or "GLX".
> > > If you read "Direct rendering enabled" somewhere, hardware acceleration
> > > works; if not, then not. At least that's the case for me (XFree86
> > > 4.1.0).
> > >
> > > Maybe it's not important (probably it is for hardware acceleration),
> > > but I also have the lines:
> > > Load "dri"
> > > Load "drm"
> > > in the modules section of my XF86Config file (besides 'Load "glx"').
> > >
> > > Also, if you want to use hardware accelerated OpenGL as a normal user
> > > (which is likely, isn't it?), you have to put this in the XF86Config
> > > file too:
> > >
> > > Section "DRI"
> > > Group "video"
> > > Mode 0666
> > > EndSection
> > >
> > > This allows all users in group "video" to use OpenGL hardware
> > > acceleration. Or so I think ;)
> > > You might want to create the group "video" and put yourself in it, or
> > > change "video" to "users" or something.
> > > I don't know if you need all this if you want to use software
> > > rendering, though...
> > >
> > > In X, you can check if OpenGL is enabled quite easily: open a terminal
> > > window and type "glxinfo".
> > >
> > > Mata ne,
> > > Magus
> > >
> > > Am Mittwoch, 17. Oktober 2001 21:58 schrieb Shane Miller:
> > > > No I didn't. I'm not sure how to do that. :-) I looked at that
> > > > site dri.sourceforge.net and it said I needed kernel 2.4.5. How do I
> > > > determine my Kernel version. Do I really need to compile something
> > > > into the kernel to get this to work? Is loading modules enough?
> > > > ..too many questions.
> > > >
> > > > :-) SHane
> > > > :
> > > > >>> kirby-2 at web.de 10/17/01 08:21AM >>>
> > > >
> > > > Hi.
> > > >
> > > > Have you enabled DRI/GLX in your XF86Config file and compiled DRI/DRM
> > > > support into your kernel (or installed the appropriate module)?
> > > > It took me a while to set up OpenGL support, but it works for my ATI
> > > > Rage 128 card.
> > > > If your card isn't supported by X or the Linux kernel, you will have
> > > > to use software rendering (which is slooooooooooow).
> > > >
> > > > For more information see http://dri.sourceforge.net/.
> > > >
> > > > Mata ne,
> > > > Magus
> > > >
> > > >
> > > > Am Mittwoch, 17. Oktober 2001 14:57 schrieb Shane Miller:
> > > >
> > > > -- > After linking libGL.so.1 to libGL.so and installing gtkgl RPM I
> > > > get
> > > >
> > > > > XLIb: extension "GLX" missing on display ":0.0".
> > > > >
> > > > > when I run it. THen it quits. Could it be my video card doesn't
> > > > > support GL?
> > > > >
> > > > > Shane
> > > > >
> > > > > >>> nc-gaertnma at netcologne.de 10/16/01 09:19AM >>>
> > > > >
> > > > > Hi all,
> > > > >
> > > > > Thx to satan, there is a new gtkglarea demo which demonstrates
> > > > > lighting, blending and animation. Simply compile and start it:
> > > > >
> > > > > cd <lazarusdir>/components/gtk/gtkglarea
> > > > > make
> > > > > ./gtkglarea_demo
> > > > >
> > > > > It's amazing!
> > > > >
> > > > > There is also an improved opengl unit with a lot of nvidia
> > > > > extensions (nvgl.pp).
> > > > >
> > > > >
> > > > > Normal bugfixes:
> > > > > - Buttons now react to Return key.
> > > > > - MessageDialogs have now a default Button.
> > > > > - Splashform is more visible.
> > > > > - reduced lcl output
> > > > >
> > > > > Mattias
> >
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