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-   Linux - Games (https://www.linuxquestions.org/questions/linux-games-33/)
-   -   What is direct rendering and how to enable it. (https://www.linuxquestions.org/questions/linux-games-33/what-is-direct-rendering-and-how-to-enable-it-377072/)

TruongAn 10-26-2005 09:54 AM
What is direct rendering and how to enable it.
 
I have download and install a linux-based game named: "Boson"
Someone on this forum have introduced this game but I cannot remember his name or the web address right now?

When I launch this game it said direct rendering is not enbale. The game will be very slow. And it asked me to enable direct rendering.
When the game is load, it was too slow that my mouse cannot move, and I have no choices but exit it.
How to fix this please. I think boson is not a huge game and eventhogh my PC is slow, it mustn't be too slow like this.!!!

KimVette 10-26-2005 10:33 AM
In a nutshell: DRI includes card/chipset-specific commands which enables the X server to talk directly to the video card - natively - without having to resort to a VESA compatibility mode. That's not exactly accurate but a fair brief explanation.

If you really want to learn more about it check out http://dri.freedesktop.org/wiki/

With that said: to enable DRI you generally have to compile the kernel module for the video chipset in your computer, then download and install (or compile and install) the specific X server for your video chipset/video card.

Could you post some specifics for your computer (post some specifications!) and we'll point you at a good HowTo specific to your chipset.

--Kim

shazam75 10-30-2005 10:15 PM
Answer: YOU do not have 3d acceleration (3D Card)

regards

KimVette 10-30-2005 11:19 PM
shazam75,

How can you know that when he hasn't posted his configuration?

cs-cam 10-31-2005 12:10 AM
Quote:
Originally posted by KimVette
shazam75,

How can you know that when he hasn't posted his configuration?
KimVette: Oh can't you read minds yet? ;)

TruongAn: Could you post the output of these two commands?
Code:
lspci
cat /etc/X11/xorg.conf | grep -i driver
Then we'll know what kind of video card you have and what driver X.org is using :)

shazam75 10-31-2005 12:17 AM
Hi Kim

It sounds like he does not have 3D acceleration.

Regards
Shelton.

TruongAn 10-31-2005 03:49 AM
Yes, I don't have 3D acceleration, Do you have any suggest to make the game play???

ciotog 10-31-2005 11:27 AM
How about posting the output of the commands cs-cam gave so someone can help you?
You'll probably need to run /sbin/lspci rather than just lspci though...

TruongAn 11-01-2005 05:03 AM
I don't think you need my lspci output because I used onboard video card.
However I posted it here in order to seek for help
Code:
00:00.0 Host bridge: Intel Corporation 82810E DC-133 GMCH [Graphics Memory Controller Hub] (rev 03)
00:01.0 VGA compatible controller: Intel Corporation 82810E DC-133 CGC [Chipset Graphics Controller] (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801AA PCI Bridge (rev 02)
00:1f.0 ISA bridge: Intel Corporation 82801AA ISA Bridge (LPC) (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801AA IDE (rev 02)
00:1f.2 USB Controller: Intel Corporation 82801AA USB (rev 02)
00:1f.3 SMBus: Intel Corporation 82801AA SMBus (rev 02)
00:1f.5 Multimedia audio controller: Intel Corporation 82801AA AC'97 Audio (rev 02)
01:00.0 Ethernet controller: 3Com Corporation 3c905 100BaseTX [Boomerang]
And the cat /etc/X11/Xorg.conf | grep -i driver said:
[code ]
Driver "kbd"
Driver "mouse"
Driver "i810"
[/code]
So, what I have to do next?

ciotog 11-01-2005 02:25 PM
On the contrary, we now know that you indeed have a i810 graphics and you're using the correct driver. Try adding
Code:
Option "DRI"
to the Device section of xorg.conf, start X, then
Code:
cat /var/log/Xorg.0.log | grep dri
to see if it gets enabled. I have an older computer with a Blaster Banshee card that can't use DRI at higher resolutions and/or colour depths, maybe you need to lower the resolution. If so, you could create a script to start X at a lower resolution just for playing the game.

TruongAn 11-03-2005 07:46 AM
OK, I will try your suggestion later.
and by the way, I have 1152x864 resolution, 24-bit color depth and 75Hz refresh rate. Will it matter me?

ciotog 11-03-2005 09:21 AM
Yes, you have to use 16 bit colour for 3d acceleration. See the man page for i810
Code:
man i810

TruongAn 11-04-2005 08:32 AM
I hav done what you said the command
Code:
cat /var/log/Xorg0.log | grep dri
give that output (after I start the game)
Code:
        X.Org XInput driver : 0.4
(II) LoadModule: "dri"
(II) Loading /usr/X11R6/lib/modules/extensions/libdri.a
(II) Module dri: vendor="X.Org Foundation"
(II) Loading /usr/X11R6/lib/modules/drivers/i810_drv.o
        ABI class: X.Org XInput driver, version 0.4
        ABI class: X.Org XInput driver, version 0.4
(II) Loading sub module "dri"
(II) LoadModule: "dri"
(II) Reloading /usr/X11R6/lib/modules/extensions/libdri.a
(II) UnloadModule: "dri"
(EE) I810: Failed to load module "dri" (once-only module, 0)
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: node name is /dev/dri/card0
(II) I810(0): [drm] created "i810" driver at busid "pci:0000:00:01.0"
But the game still complain that Direct rendering is not enabled.
It run a little bit faster but still too slow to play.
Why?

ciotog 11-05-2005 11:58 PM
I think it's clear from the log that X was unble to load the dri module. I'd recommend reading the lines around the error message to see if they give more information about the failure. Did you set the colour depth to 16?

TruongAn 11-06-2005 01:53 AM
Quote:
Originally posted by ciotog
Did you set the colour depth to 16?
Yes I did.


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