Recent changes to bugs

CPU-bound

Peter Cordes — Sat, 03 Nov 2007 08:28:52 -0000

gl-117 is much more CPU-bound than most other games. This is a problem on my Athlon64 3200+ (Newcastle core, overclocked from 2.2 to ~2.4GHz, but with single-channel DDR333) w/ NVidia 7600GT. At max quality setting (5/150), I get at best 35 fps at 1680x1050. Depending on terrain complexity, sometimes down to 20 fps at worst. This is after compiling with -O3 -ffast-math -mfpmath=sse. I'm running i386 Debian.
Backing of the quality to 4 raises the frame rates to ~40. By comparison, my Core 2 Duo E6600 (2.4GHz, 4MB, dual channel DDR2-800) with g965 graphics hardware gets similar or worse frame rates at quality 4/150 at 1680x1050. I run 64bit Ubuntu on it. In most games, I get way better fps at higher quality settings on my slower CPU with the NVidia 7600GT. A 7600GT has maybe 10 times the fill rates of a g965, and probably shader power, too. I was thinking before I started writing this that gl-117 was actually faster on the core 2 with g965 graphics, but I guess it isn't at equal resolution and quality. Maybe last time I checked it was before I'd upgraded my nvidia drivers and overclocked my Athlon64. And with the Debian i386 binary on the Athlon64, vs. my -march=k8 -O3 -ffast-math -mfpmath=sse
binary from the debian sources. Just recompiling actually made a difference of several fps.

The fact remains that gl-117 seems a lot more CPU-bound than most games. My Athlon64 can run Nexuiz, ut2004, TA Spring, etc. etc. at high frame rates, and they're more graphically complex than gl-117. BTW, I really enjoy gl-117.

I used oprofile to find the hot spots.

opreport:
~2.4GHz Athlon64, 512kB L2. NVidia drivers.
Counted CPU_CLK_UNHALTED events (Cycles outside of halt state) with a unit mask of 0x00 (No unit mask) count 100000
Counted DATA_CACHE_MISSES events (Data cache misses) with a unit mask of 0x00 (No unit mask) count 1100000
Counted L2_CACHE_MISS events (L2 Cache Misses) with a unit mask of 0x07 (multiple flags) count 500000
CPU_CLK_UNHALT...|DATA_CACHE_MIS...|L2_CACHE_MISS:...|
samples| %| samples| %| samples| %|
------------------------------------------------------
3184691 61.4894 1123 57.2084 657 24.8206 gl-117
1077926 20.8124 592 30.1579 1529 57.7635 zero
557517 10.7644 113 5.7565 96 3.6267 libGLcore.so.100.14.19
193498 3.7360 57 2.9037 113 4.2690 no-vmlinux
59218 1.1434 41 2.0886 204 7.7068 libc-2.6.1.so

from opannotate --assembly src/gl-117
GLLandscape::drawTexturedQuad(int, int) total: 1003180 31.5001 287 25.5565 317 48.249

(32% of total CPU cycles on the machine, 26% of L1 Data cache misses, and 48% of L2 cache misses happened in this function.)

and using 25% of total CPU is:

08087950 <_ZN11GLLandscape4drawEii>: /* GLLandscape::draw(int, int) total: 779997 24.4921 73 6.5004 89 13.5464 */

Is that what openGL display lists are good for? So gl-117 wouldn't have to run through the geometry of the terrain itself every frame? I don't know openGL programming...

Another one is
08076160 <_ZN9Landscape7isWaterEi>: /* Landscape::isWater(int) total: 64735 2.0327 1 0.0890 2 0.3044 */

This should be in the .h, so it can be inlined. Pushing the frame pointer in this function uses .7% of the whole machine's CPU time...

thrust control isn't working when joystick enabled

Anonymous — Tue, 21 Nov 2006 20:09:50 -0000

When I set the joystick as a control device, neither "x" , "s" buttons or numeric keys is not working.

The reason could be the fact, that my joystick (below) is detected as a 4 button's (actually it has only two buttons) and actions of thrust are mapped on non-existing buttons. The next problem is that any manual change (as deleting appropriate lines like "joystick_incthrust = A4") in conf.interface file is not reflected and the file is changed back after the first start.

--- Distro:
Ubuntu Edgy Eft
--- Joystick:
QuickShot QS-209 detected by jscal like 2 buttons; I use ns558, analog and joydev modules.

Joystick Buttons not working

Andre Michel Gauthier — Thu, 02 Nov 2006 14:01:03 -0000

I have been trying to use this game with a new joypad
that I have aquired. The debug info appears to detect a
two axis 8 button device and the game options suggest
that buttons 4 and 5 should increase and decrease
thrust respectively but it does not appear to work.
Altering the config to use 6 and 7 does not help
either. Attempting to set the throttle axis setting to
N/A does not help either and actually seems to pair the
throttle to the Ailerons.

Version Info: 1.3 on Ubuntu Edgy.

gl-117 or SDL problem??

Anonymous — Tue, 24 May 2005 17:14:27 -0000

Installed gl-117 on Fedora Core 3 with yum, but get the
error message at start:

Info: Found gl-117 data directory /usr/share/gl-117
Info: Startup gl-117, V1.3 ...
Info: Loading /home/fkauff/.gl-117/conf
Info: Saving /home/fkauff/.gl-117/conf
Info: Loading /home/fkauff/.gl-117/conf.interface
Info: Saving /home/fkauff/.gl-117/conf.interface
Warning: Could not load saves/pilots
Warning: Could not load pilot
Info: Using SDL and GLUT
Info: Using SDL_mixer
Fatal: Cannot open winner.s3m: Unrecognized music format

SDL versions used:

SDL_mixer-1.2.6-1
SDL_net-devel-1.2.5-2
SDL_net-1.2.5-2
SDL_ttf-2.0.7-1
SDL_mixer-devel-1.2.6-1
SDL-1.2.8-1
SDL_image-1.2.4-1
SDL-devel-1.2.8-1
SDL_image-devel-1.2.4-1
SDL_ttf-devel-2.0.7-1

is that an SDL bug, or an gl-117 problem?

Won't even bounce when opened in Mac OSX

Anonymous — Wed, 16 Mar 2005 01:50:33 -0000

getting no response at all when opening app in Mac OSX 10.3.7...
why no documentation with download?

Graphic Bug in 1.3 on Linux

Anonymous — Sun, 26 Dec 2004 21:14:12 -0000

I experience heavy graphic Bugs when playing gl-117 v.1.3 (and
1.3.1). I do not know how to name it, but terrain-textures
disappear and reappear randomly in a very high frequency and the
fighter-models when choosing the fighter before the mission are
totally corrupted. This happens with all graphic-settings. I do not
have problems with v. 1.2 or when playing 1.3 on Windows XP.
My system:
ATI Radeon 9800Pro
SuSe Linux 9.1 Professional
XFree86 4.3.99.902-43.28
XFree86-mesa 4.3.99.902-40
SDL 1.2.7-1
freeglut 2.2.0-78
fglrx 3.14.6-1

If you have questions, e-mail me at lysia_@freenet.de or via ICQ:
169793898

skipping missions in campain possible

Anonymous — Thu, 09 Dec 2004 20:44:28 -0000

[reported by Marcel Sebek <sebek64@post.cz> to the
Debian gl-117 package ]

Package: gl-117
Version: 1.3.0-2
Severity: normal

I've found way how to play particular mission in
campain without completing previous missions. Buttons
with mission names is hidden after processing clicks on
them. So when you finish a mission, double click on
right side of "Return to main menu" allows to play one
of the "moon" missions.

error

Anonymous — Wed, 28 Jul 2004 22:43:35 -0000

i download g.117 win32.exe but when i run this program
i received an error : that is sdl.dll isn't found

GL-117 died at beginning of mission "defend sam"

thespecialist — Tue, 20 Jul 2004 22:51:30 -0000

Programm stops a few seconds after starting "defend
sam"-mission.
No error was displayed.

Game version 1.3
OS: Win2000 Pro SP 4 German

mg sound stops when accelerating

Anonymous — Sat, 19 Jun 2004 12:13:41 -0000

see summary