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Old 08-15-04, 04:32 PM   #1
jlacroix
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Posts: 57
Default How Can I Speed Up Hardware Acceleration?

How can I tweak my xorg.conf for the fastest possible performance?
Namely ZSNES and TVTime. Both are jerky and appear to miss frames at times.

Basically what I want to achieve is removing the jerkiness of my SNES and TVTime and tweak xorg so everything is perfect, maybe there are some options I can include to boost things?

Computer:
Fedora Core 2
768MB Ram
500mhz PIII
Geforce FX 5200 128MB AGP
Driver: nvidia (NOT NV)


GLX Gears:
-------
2257 frames in 5.0 seconds = 451.400 FPS
3028 frames in 5.0 seconds = 605.600 FPS
3926 frames in 5.0 seconds = 785.200 FPS
3671 frames in 5.0 seconds = 734.200 FPS
4209 frames in 5.0 seconds = 841.800 FPS
4053 frames in 5.0 seconds = 810.600 FPS
3911 frames in 5.0 seconds = 782.200 FPS
(I only let it run for a short time)

xorg:
--------------------------------------------------

# XFree86 4 configuration created by pyxf86config

Section "ServerLayout"
Identifier "Default Layout"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"

# RgbPath is the location of the RGB database. Note, this is the name of the
# file minus the extension (like ".txt" or ".db"). There is normally
# no need to change the default.
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, Red Hat 6.0 and later now use a font server independent of
# the X server to render fonts.
RgbPath "/usr/X11R6/lib/X11/rgb"
FontPath "unix/:7100"
EndSection

Section "Module"
Load "dbe"
Load "extmod"
Load "fbdevhw"
Load "glx"
Load "record"
Load "freetype"
Load "type1"
EndSection

Section "InputDevice"

# Specify which keyboard LEDs can be user-controlled (eg, with xset(1))
# Option "Xleds" "1 2 3"
# To disable the XKEYBOARD extension, uncomment XkbDisable.
# Option "XkbDisable"
# To customise the XKB settings to suit your keyboard, modify the
# lines below (which are the defaults). For example, for a non-U.S.
# keyboard, you will probably want to use:
# Option "XkbModel" "pc102"
# If you have a US Microsoft Natural keyboard, you can use:
# Option "XkbModel" "microsoft"
#
# Then to change the language, change the Layout setting.
# For example, a german layout can be obtained with:
# Option "XkbLayout" "de"
# or:
# Option "XkbLayout" "de"
# Option "XkbVariant" "nodeadkeys"
#
# If you'd like to switch the positions of your capslock and
# control keys, use:
# Option "XkbOptions" "ctrl:swapcaps"
# Or if you just want both to be control, use:
# Option "XkbOptions" "ctrl:nocaps"
#
Identifier "Keyboard0"
Driver "keyboard"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "IMPS/2"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "yes"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Compaq V700 Color Monitor"
DisplaySize 320 240
HorizSync 30.0 - 85.0
VertRefresh 50.0 - 160.0
Option "dpms"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
VendorName "Videocard vendor"
BoardName "NVIDIA GeForce FX (generic)"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1024x768" "800x600" "640x480"
EndSubSection
EndSection

# Section "DRI"
# Group 0
# Mode 0666
# EndSection
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Old 08-15-04, 04:51 PM   #2
Thunderbird
 
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Location: Netherlands, Europe
Posts: 2,105
Default Re: How Can I Speed Up Hardware Acceleration?

There are no tweaks.
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Old 08-15-04, 05:01 PM   #3
jlacroix
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Default Re: How Can I Speed Up Hardware Acceleration?

Anyone know what could be causing it then?
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Old 08-15-04, 05:28 PM   #4
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Default Re: How Can I Speed Up Hardware Acceleration?

You could try if the nv driver is quicker as what you request are basicly 2d features. Further the only way to speed things up is to upgrade your computer. Although even your fx5200 isn't the fastest card its performance is severly limited by your cpu which isn't modern enough anymore. I know you don't want to hear it but it is the only way to speed things up.
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Old 08-15-04, 06:13 PM   #5
FreeCatalonia
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Default Re: How Can I Speed Up Hardware Acceleration?

I think I could get a smooth experience with snes in my old 500 mhz computer.

I can think of many issues here:

-Recompile snes for your cpu.
-Use zsnes or another emulator.
-Your window manager is too much for your cpu/memory, try just starting x and launching snes.
-Try another distribuition to see if it helps.
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Old 08-15-04, 07:49 PM   #6
jlacroix
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Default Re: How Can I Speed Up Hardware Acceleration?

Thanks everyone, I don't think its my processor, because with windows both the TV and ZSNES work very smoothly. Only Linux has a problem so it has to be a Linux thing.
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Old 08-15-04, 08:34 PM   #7
tiangha
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Default Re: How Can I Speed Up Hardware Acceleration?

Perhaps you could enable double buffering in ZSNES? It could help smooth out some of that jerkiness.
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Old 08-17-04, 07:18 AM   #8
chrismortimore
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Default Re: How Can I Speed Up Hardware Acceleration?

Try updating your Mesa library *shrug*
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Old 08-17-04, 04:59 PM   #9
energyman76b
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Default Re: How Can I Speed Up Hardware Acceleration?

Hi,

stop using the xfs (x font server).
This is not needed anymore.
Remove this line:
FontPath "unix/:7100"

and add the path to your fonts.

remove this lines:
Load "fbdevhw"
Load "record"

stop using DGA and start using Xv for tv (like with xawdecode).
Reduce default depht to 16 instead of 24.

And updating your mesa-lib will change nothing, because the nvidia driver is using the nvidia opengl-lib
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Old 08-17-04, 05:04 PM   #10
chrismortimore
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Default Re: How Can I Speed Up Hardware Acceleration?

It was a guess, hence the *shrug* :P I was tired and in need of breakfast when I posted that.
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Old 08-17-04, 08:09 PM   #11
energyman76b
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Default Re: How Can I Speed Up Hardware Acceleration?

Hi,

well, minutes before you posted, I wrote something stupid to a mailing-list, my excuse is, that I had eaten way to much.. no blood left for the brain ;o)
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Old 08-18-04, 05:59 AM   #12
chrismortimore
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Default Re: How Can I Speed Up Hardware Acceleration?

Hehe, thats a good excuse, I'll need to remember it :P
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