From 01df5d59e56a1b060568f8cad2e89f7eea22fc70 Mon Sep 17 00:00:00 2001
From: marha
-The fbdev/DRI environment supports hardware-accelerated 3D rendering without
-the X window system. This is typically used for embedded applications.
-
-Contributors to this project include Jon Smirl, Keith Whitwell and Dave Airlie.
-
-Applications in the fbdev/DRI environment use
-the MiniGLX interface to choose pixel
-formats, create rendering contexts, etc. It's a subset of the GLX and
-Xlib interfaces allowing some degree of application portability between
-the X and X-less environments.
-
-Note that this environment is not well-supported and these instructions
-may not be completely up to date.
-
-
-Mesa fbdev/DRI Drivers
-
-
-
-1. Introduction
-
-
-
-
-
-2. Compilation
-2.1 glxproto
-
-Get glxproto.h. Copy it to the /mesa/include/GL/ directory.
-
-Check if you have libpciaccess installed: -
- -pkg-config --modversion pciaccess --
-If not you can download the latest code from: -
-git clone git://anongit.freedesktop.org/git/xorg/lib/libpciaccess --
-Run autogen.sh to generate a configure file. autogen.sh uses autoconf -utility. This utility may not be installed with your linux distro, -check if it is available. if not you can use your package manager or -type: -
-sudo apt-get install autoconf --The next step is to install the libpciaccess library. -
make -make install --
Now your libpciaccess.a file is saved into /usr/local/lib -directory. If you have a libpciaccess.a in /usr/lib you may simply copy -and overwrite these files. Don't forget to copy libpciaccess.pc file to -/usr/lib/pkgconfig, which is also located in /usr/local/lib/pkgconfig/. -Or you may use the following system variables: -
-export LD_LIBRARY_PATH=/usr/local/lib -export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig -- -
The next step is to compile the drm. DRM consists of two seperate parts, -the DRM client library(lindrm.so) and kernel device module(such as -radeon.ko). We need to make a small change in kernel device module. So -you need to download the kernel source. You may choose the nearest -mirror from www.kernel.org, or you are using Fedora Core 5, for -example, you may need to install RPMs such as: -kernel-smp-devel-2.16.15-1.2054_FC5.i686.rpm -kernel-devel-2.6.15-1.2054_FC5.i686.rpm -etc. You can find a detailed information here. -
- -You will find drm_drv.c at /usr/src/LINUX-VERSION/drivers/char/drm/. Edit this code and comment out the following part: -
- -- /* || - ((ioctl->flags & DRM_MASTER) && !priv->master)*/ --Now you are ready to compile your kernel. If your kernel version is -identical to the version you have compiled, you can simply over write -your new "ko" files over older ones. If you have compiled a different -kernel, you must configure your grub or lilo to be able to boot your -new kernel.
-You'll need fbdev header files. Check with: -
-- ls -l /usr/include/linux/fb. --
This file may be missing if you have not installed linux header files. - - -
Get latest development Mesa sources from git repository -(currently 7.1-prerelease) -
-- git clone git://anongit.freedesktop.org/git/mesa/mesa -- -
You will need the makedepend utility which is a part of mesa project -to build your linux-solo. You probably wont have this utility. You can -download its source from following git repulsitory: -
-- git clone git://anongit.freedesktop.org/git/xorg/util/makedepend -- -
Get the latest stable mesa version from SourceForge (currently 7.0.3) -http://sourceforge.net/project/showfiles.php?group_id=3 -
- -Copy the miniglx folder from 7.1-prerelease to 7.0.3. -You may also extract GLUT to 7.0.3 version at this step. -
- -Edit linux-solo.conf at /conf directory, just only compile the -graphics driver you need, delete the unwanted drivers names from the -list(some drivers are causing problems...) -
-- while(build==0) - { - make linux-solo - - There will be some missing header files, copy them from 7.1-prerelease - } -- -
-When complete you should have the following: -
-- make install -- -Now your openGL libraries are copied to /usr/local/lib and -miniglx.conf is copied to /etc. You may copy them to /usr/lib and -overwrite your old GL libraries. Or you may export following variable: - -
- export LIBGL_DRIVERS_PATH=/usr/local/lib --
-If an X server currently running, exit/stop it so you're working from -the console. Following command shuts down the x window and also the multi user support. -
-- init 1 -- -
Also you may define the runlevel as 1 in "/etc/inittab". Your system -will always start in single user mode and without x-window with this -option set. -
-You'll need to load the kernel modules specific to your graphics hardware. -Typically, this consists of the agpgart module, an fbdev driver module -and the DRM kernel module. -
--As root, the kernel modules can be loaded as follows: -
- --If you have Intel i915/i945 hardware: -
-modprobe agpgart # the AGP GART module - modprobe intelfb # the Intel fbdev driver - modprobe i915 # the i915/945 DRI kernel module -- -
-If you have ATI Radeon/R200 hardware: -
-modprobe agpgart # the AGP GART module - modprobe radeonfb # the Radeon fbdev driver - modprobe radeon # the Radeon DRI kernel module -- -
-If you have ATI Rage 128 hardware: -
-modprobe agpgart # the AGP GART module - modprobe aty128fb # the Rage 128 fbdev driver - modprobe r128 # the Rage 128 DRI kernel module -- -
-If you have Matrox G200/G400 hardware: -
-modprobe agpgart # the AGP GART module - modprobe mgafb # the Matrox fbdev driver - modprobe mga # the Matrox DRI kernel module -- -
-To verify that the agpgart, fbdev and drm modules are loaded: -
-ls -l /dev/agpgart /dev/fb* /dev/dri --
-Alternately, use lsmod to inspect the currently installed modules. -If you have problems, look at the output of dmesg. -
- - --review/edit /etc/miniglx.conf. -Alternately, the MINIGLX_CONF environment variable can be used to -indicate the location of miniglx.conf -
- -To determine the pciBusID value, run lspci and examine the output. -For example: - -/sbin/lspci: - 00:02.0 VGA compatible controller: Intel Corporation 82915G/GV/910GL Express Chipset Family Graphics Controller (rev 04) --
-00:02.0 indicates that pciBusID should be PCI:0:2:0 -
- - - - --Make sure your LD_LIBRARY_PATH environment variable is set to the -location of the libGL.so library. You may need to append other paths -to LD_LIBRARY_PATH if libpciaccess.so is in a non-standard location, -for example. -
- -
-Change to the Mesa/progs/miniglx/
directory and
-start the sample_server program in the background:
-
./sample_server & -- -
-Then try running the miniglxtest
program:
-
./miniglxtest --
-You should see a rotating quadrilateral which changes color as it rotates. -It will exit automatically after a bit. -
- --If you run other tests in the miniglx/ directory, you may want to run -them from a remote shell so that you can stop them with ctrl-C. -
-[miniglx] failed to probe chipset - connect: Connection refused - server connection lost --It means that the sample_server process is not running. -
-OpenGL/Mesa is interfaced to fbdev via the MiniGLX interface. -MiniGLX is a subset of Xlib and GLX API functions which provides just -enough functionality to setup OpenGL rendering and respond to simple -input events. -
- --Since MiniGLX is a subset of the usual Xlib and GLX APIs, programs written -to the MiniGLX API can also be run on full Xlib/GLX implementations. -This allows some degree of flexibility for software development and testing. -
- --However, the MiniGLX API is not binary-compatible with full Xlib/GLX. -Some of the structures are different and some macros/functions work -differently. -See the GL/miniglx.h header file for details. -
- - - - - -- cgit v1.2.3