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authormarha <marha@users.sourceforge.net>2011-05-16 08:06:12 +0000
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- DRI Compilation Guide
-
- VA Linux Systems, Inc. Professional Services - Graphics.
-
- 21 April 2001
-
-1. Preamble
-
-1.1 Copyright
-
-Copyright 2000-2001 by VA Linux Systems, Inc. All Rights Reserved.
-
-Permission is granted to make and distribute verbatim copies of this document
-provided the copyright notice and this permission notice are preserved on all
-copies.
-
-1.2 Trademarks
-
-OpenGL is a registered trademark and SGI is a trademark of Silicon Graphics,
-Inc. Unix is a registered trademark of The Open Group. The `X' device and X
-Window System are trademarks of The Open Group. XFree86 is a trademark of
-The XFree86 Project. Linux is a registered trademark of Linus Torvalds.
-Intel is a registered trademark of Intel Corporation. 3Dlabs, GLINT, and
-Oxygen are either registered trademarks or trademarks of 3Dlabs Inc. Ltd.
-3dfx, Voodoo3, Voodoo4, and Voodoo5 are registered trademarks of 3dfx Inter-
-active, Incorporated. Matrox is a registered trademark of Matrox Electronic
-Systems Ltd. ATI Rage and Radeon is a registered trademark of ATI Technolo-
-gies, Inc. All other trademarks mentioned are the property of their respec-
-tive owners.
-
-2. Introduction
-
-This document describes how to download, compile and install the DRI. The
-DRI provides 3D graphics hardware acceleration for the XFree86 project. This
-information is intended for experienced Linux developers. Beginners are
-probably better off installing precompiled packages.
-
-Edits, corrections and updates to this document may be mailed to <brian@tung-
-stengraphics.com>.
-
-Last updated on 13 February 2002 by Brian Paul.
-
-3. Prerequisites
-
-You'll need the following:
-
- o An installation of XFree86 4.1 or later. The DRI tree has been pruned
- down to minimize its size. But in order to build the DRI tree you need
- to have recent X header files, etc. already installed. If you don't
- have XFree86 4.1 (or later) installed you can probably install it from
- RPMs (or another package format). Or, you can download XFree86 as
- sources and compile/install it yourself.
-
- o At least 200MB of free disk space. If you compile for debugging (the -g
- option) then you'll need about 600MB.
-
- o GCC compiler and related tools.
-
- o ssh (secure shell) if you're a DRI developer and don't want to use
- anonymous CVS download.
-
- o A 2.4.x Linux Kernel. See below for details.
-
- o FreeBSD support is not currently being maintained and may not work.
-
-The DRI 3D drivers generally work on systems with Intel or AMD CPUs. How-
-ever, limited support for Alpha and PowerPC support is underway.
-
-For 3dfx Voodoo hardware, you'll also need the Glide3 runtime library
-(libglide3-v3.so for Voodoo3 or libglide3-v5.so for Voodoo4/5). These can be
-downloaded from the DRI website. You can compile them yourself, but it's
-often a painful process.
-
-For Matrox G200/G400, Intel i810/i830 or ATI Rage128/Radeon hardware, you'll
-also need AGP support in your Linux kernel, either built-in or as a loadable
-module.
-
-4. Linux Kernel Preparation
-
-Only the Linux 2.4.x kernels are currently supported by the DRI hardware
-drivers. 2.5.x kernels may work, but aren't tested.
-
-Most of the DRI drivers require AGP support and using Intel Pentium III SSE
-optimizations also requires an up-to-date Linux kernel. Configuring your
-kernel correctly is very important, as features such as SSE optimizations
-will be disabled if your kernel does not support them. Thus, if you have a
-Pentium III processor, you must configure your kernel for the Pentium III
-processor family.
-
-Building a new Linux kernel can be difficult for beginners but there are
-resources on the Internet to help. This document assumes experience with
-configuring, building and installing Linux kernels.
-
-Linux kernels can be downloaded from www.kernel.org
-
-Here are the basic steps for kernel setup.
-
- o Download the needed kernel and put it in /usr/src. Create a directory
- for the source and unpack it. For example:
-
- cd /usr/src
- rm -f linux
- mkdir linux-2.4.x
- ln -s linux-2.4.x linux
- bzcat linux-2.4.x.tar.bz2 | tar xf -
-
- It is critical that /usr/src/linux point to your new kernel sources,
- otherwise the kernel headers will not be used when building the DRI.
- This will almost certainly cause compilation problems.
-
- o Read /usr/src/linux/Documentation/Changes. This file lists the minimum
- requirements for all software packages required to build the kernel.
- You must upgrade at least gcc, make, binutils and modutils to at least
- the versions specified in this file. The other packages may not be
- needed. If you are upgrading from Linux 2.2.x you must upgrade your
- modutils package for Linux 2.4.x.
-
- o Configure your kernel. You might, for example, use make menuconfig and
- do the following:
-
- o Go to Code maturity level options
-
- o Enable Prompt for development and/or incomplete code/drivers
-
- o hit ESC to return to the top-level menu
-
- o Go to Processor type and features
-
- o Select your processor type from Processor Family
-
- o hit ESC to return to the top-level menu
-
- o Go to Character devices
-
- o Disable Direct Rendering Manager (XFree86 DRI support) since we'll
- use the DRI code from the XFree86/DRI tree and will compile it
- there.
-
- o Go to /dev/agpgart (AGP Support) (EXPERIMENTAL) (NEW)
-
- o Hit SPACE twice to build AGP support into the kernel
-
- o Enable all chipsets' support for AGP
-
- o It's recommended that you turn on MTRRs under Processor type and
- Features, but not required.
-
- o Configure the rest of the kernel as required for your system (i.e. Eth-
- ernet, SCSI, etc)
-
- o Exit, saving your kernel configuration.
-
- o Edit your /etc/lilo.conf file. Make sure you have an image entry as
- follows (or similar):
-
- image=/boot/vmlinuz
- label=linux.2.4.x
- read-only
- root=/dev/hda1
-
- The important part is that you have /boot/vmlinuz without a trailing
- version number. If this is the first entry in your /etc/lilo.conf AND
- you haven't set a default, then this will be your default kernel.
-
- o Compile the new kernel.
-
- cd /usr/src/linux-2.4.x
- make dep
- make bzImage
- make modules
- make modules_install
- make install
-
- Note that last make command will automatically run lilo for you.
-
- o Now reboot to use the new kernel.
-
-5. CPU Architectures
-
-In general, nothing special has to be done to use the DRI on different CPU
-architectures. There are, however, a few optimizations that are CPU-depen-
-dent. Mesa will determine at runtime which CPU-dependent optimizations
-should be used and enable them where appropriate.
-
-5.1 Intel Pentium III Features
-
-The Pentium III SSE instructions are used in optimized vertex transformation
-functions in the Mesa-based DRI drivers. On Linux, SSE requires a recent
-kernel (such as 2.4.0-test11 or later) both at compile time and runtime.
-
-5.2 AMD 3DNow! Features
-
-AMD's 3DNow! instructions are used in optimized vertex transformation func-
-tions in the Mesa-based DRI drivers. 3DNow! is supported in most versions of
-Linux.
-
-5.3 Alpha Features
-
-On newer Alpha processors a significant performance increase can be seen with
-the addition of the -mcpu= option to GCC. This option is dependent on the
-architecture of the processor. For example, -mcpu=ev6 will build specifi-
-cally for the EV6 based AXP's, giving both byte and word alignment access to
-the DRI/Mesa drivers.
-
-To enable this optimization edit your xc/config/host.def file and add the
-line:
-
-#define DefaultGcc2AxpOpt -O2 -mcpu=ev6
-
-Additional speed improvements to 3D rendering can be achieved by installing
-Compaq's Math Libraries (CPML) which can be obtained from http://www.sup-
-port.compaq.com/alpha-tools/software/index.html
-
-Once installed, you can add this line to your host.def to build with the CPML
-libraries:
-
-#define UseCompaqMathLibrary YES
-
-The host.def file is explained below.
-
-6. Downloading the XFree86/DRI CVS Sources
-
-The DRI project is hosted by SourceForge. The DRI source code, which is a
-subset of the XFree86 source tree, is kept in a CVS repository there.
-
-The DRI CVS sources may be accessed either anonymously or as a registered
-SourceForge user. It's recommended that you become a registered SourceForge
-user so that you may submit non-anonymous bug reports and can participate in
-the mailing lists.
-
-6.1 Anonymous CVS download:
-
- 1. Create a directory to store the CVS files:
-
- cd ~
- mkdir DRI-CVS
-
- You could put your CVS directory in a different place but we'll use
- ~/DRI-CVS/ here.
-
- 2. Check out the CVS sources:
-
- cd ~/DRI-CVS
- cvs -d:pserver:anonymous@cvs.dri.sourceforge.net:/cvsroot/dri login
- (hit ENTER when prompted for a password)
- cvs -z3 -d:pserver:anonymous@cvs.dri.sourceforge.net:/cvsroot/dri co xc
-
- The -z3 flag causes compression to be used in order to reduce the down-
- load time.
-
-6.2 Registered CVS download:
-
- 1. Create a directory to store the CVS files:
-
- cd ~
- mkdir DRI-CVS
-
- You could put your CVS directory in a different place but we'll use
- ~/DRI-CVS/ here.
-
- 2. Set the CVS_RSH environment variable:
-
- setenv CVS_RSH ssh // if using csh or tcsh
- export CVS_RSH=ssh // if using sh or bash
-
- 3. Check out the CVS sources:
-
- cd ~/DRI-CVS
- cvs -z3 -d:ext:YOURID@cvs.dri.sourceforge.net:/cvsroot/dri co xc
-
- Replace YOURID with your CVS login name. You'll be prompted to enter
- your sourceforge password.
-
- The -z3 flag causes compression to be used in order to reduce the down-
- load time.
-
-6.3 Updating your CVS sources
-
-In the future you'll want to occasionally update your local copy of the DRI
-source code to get the latest changes. This can be done with:
-
- cd ~/DRI-CVS
- cvs -z3 update -dA xc
-
-The -d flag causes any new subdirectories to be created and -A causes most
-recent trunk sources to be fetched, not branch sources.
-
-7. Mesa
-
-Most of the DRI 3D drivers are based on Mesa (the free implementation of the
-OpenGL API). The relevant files from Mesa are already included in the
-XFree86/DRI source tree. There is no need to download or install the Mesa
-source files separately.
-
-Sometimes a newer version of Mesa will be available than the version included
-in XFree86/DRI. Upgrading Mesa within XFree86/DRI is not always straightfor-
-ward. It can be an error-prone undertaking, especially for beginners, and is
-not generally recommended. The DRI developers will upgrade Mesa when appro-
-priate.
-
-8. Compiling the XFree86/DRI tree
-
-8.1 Make a build tree
-
-Rather than placing object files and library files right in the source tree,
-they're instead put into a parallel build tree. The build tree is made with
-the lndir command:
-
- cd ~/DRI-CVS
- ln -s xc XFree40
- mkdir build
- cd build
- lndir -silent -ignorelinks ../XFree40
-
-The build tree will be populated with symbolic links which point back into
-the CVS source tree.
-
-Advanced users may have several build trees for compiling and testing with
-different options.
-
-8.2 Edit the host.def file
-
-The ~/DRI-CVS/build/xc/config/cf/host.def file is used to configure the
-XFree86 build process. You can change it to customize your build options or
-make adjustments for your particular system configuration
-
-The default host.def file will look something like this:
-
- #define DefaultCCOptions -Wall
- (i386) #define DefaultGcc2i386Opt -O2
- (Alpha) #define DefaultGcc2AxpOpt -O2 -mcpu=ev6 (or similar)
- #define LibraryCDebugFlags -O2
- #define BuildServersOnly YES
- #define XF86CardDrivers vga tdfx mga ati i810
- #define LinuxDistribution LinuxRedHat
- #define DefaultCCOptions -ansi GccWarningOptions -pipe
- #define BuildXF86DRI YES
- /* Optionally turn these on for debugging */
- /* #define GlxBuiltInTdfx YES */
- /* #define GlxBuiltInMga YES */
- /* #define GlxBuiltInR128 YES */
- /* #define GlxBuiltInRadeon YES */
- /* #define DoLoadableServer NO */
- #define SharedLibFont NO
-
-The ProjectRoot variable specifies where the XFree86 files will be installed.
-We recommend installing the DRI files over your existing XFree86 installation
-- it's generally safe to do and less error-prone. This policy is different
-than what we used to recommend.
-
-If XFree86 4.x is not installed in /usr/X11R6/ you'll have to add the follow-
-ing to the host.def file:
-
- #define ProjectRoot pathToYourXFree86installation
-
-Note the XF86CardDrivers line to be sure your card's driver is listed.
-
-If you want to enable 3DNow! optimizations in Mesa and the DRI drivers, you
-should add the following:
-
- #define MesaUse3DNow YES
-
-You don't have to be using an AMD processor in order to enable this option.
-The DRI will look for 3DNow! support and runtime and only enable it if appli-
-cable.
-
-If you want to enable SSE optimizations in Mesa and the DRI drivers, you must
-upgrade to a Linux 2.4.x kernel. Mesa will verify that SSE is supported by
-both your processor and your operating system, but to build Mesa inside the
-DRI you need to have the Linux 2.4.x kernel headers in /usr/src/linux. If
-you enable SSE optimizations with an earlier version of the Linux kernel in
-/usr/src/linux, Mesa will not compile. You have been warned. If you do have
-a 2.4.x kernel, you should add the following:
-
- #define MesaUseSSE YES
-
-If you want to build the DRM kernel modules as part of the full build pro-
-cess, add the following:
-
- #define BuildXF86DRM YES
-
-Otherwise, you'll need to build them separately as described below.
-
-8.3 Compilation
-
-To compile the complete DRI tree:
-
- cd ~/DRI-CVS/build/xc/
- make World >& world.log
-
-Or if you want to watch the compilation progress:
-
- cd ~/DRI-CVS/build/xc/
- make World >& world.log &
- tail -f world.log
-
-With the default compilation flags it's normal to get a lot of warnings dur-
-ing compilation.
-
-Building will take some time so you may want to go check your email or visit
-slashdot.
-
-WARNING: do not use the -j option with make. It's reported that it does not
-work with XFree86/DRI.
-
-8.4 Check for compilation errors
-
-Using your text editor, examine world.log for errors by searching for the
-pattern ***.
-
-After fixing the errors, run make World again. Later, you might just compile
-parts of the source tree but it's important that the whole tree will build
-first.
-
-If you edited your host.def file to enable automatic building of the DRI ker-
-nel module(s), verify that they were built:
-
- cd ~/DRI-CVS/build/xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel
- ls
-
-Otherwise, build them now by running
-
- cd ~/DRI-CVS/build/xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel
- make -f Makefile.linux
-
-For the 3dfx Voodoo, you should see tdfx.o. For the Matrox G200/G400, you
-should see mga.o. For the ATI Rage 128, you should see r128.o. For the ATI
-Radeon, you should see radeon.o. For the Intel i810, you should see i810.o.
-
-If the DRI kernel module(s) failed to build you should verify that you're
-using the right version of the Linux kernel. The most recent kernels are not
-always supported.
-
-If your build machine is running a different version of the kernel than your
-target machine (i.e. 2.2.x vs. 2.4.x), make will select the wrong kernel
-source tree. This can be fixed by explicitly setting the value of LINUXDIR.
-If the path to your kernel source is /usr/src/linux-2.4.x,
-
- cd ~/DRI-CVS/build/xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel
- make -f Makefile.linux LINUXDIR=/usr/src/linux-2.4.x
-
-or alternatively, edit Makefile.linux to set LINUXDIR before the ifndef LIN-
-UXDIR line.
-
-8.5 DRI kernel module installation
-
-The DRI kernel modules will be in ~/DRI-CVS/build/xc/pro-
-grams/Xserver/hw/xfree86/os-support/linux/drm/kernel/.
-
-To load the appropriate DRM module in your running kernel you can either use
-ismod and restart your X server or copy the kernel module to /lib/mod-
-ules/2.4.x/kernel/drivers/char/drm/ then run depmod and restart your X
-server.
-
-Make sure you first unload any older DRI kernel modules that might be already
-loaded.
-
-Note that some DRM modules require that the agpgart module be loaded first.
-
-9. Normal Installation and Configuration
-
-Most users will want to install the new X server and use it in place of their
-old X server. This section explains how to do that.
-
-Developers, on the other hand, may just want to test the X server without
-actually installing it as their default server. If you want to do that, skip
-to the next section.
-
-9.1 Installation
-
-Here are the installation commands:
-
- su
- cd ~/DRI-CVS/build/xc
- make install
-
-9.2 Update the XF86Config File
-
-You may need to edit your XF86Config file to enable the DRI. The config file
-is usually installed as /etc/X11/XF86Config-4. See the DRI User Guide for
-details, but basically, you need to load the "glx" and "dri" modules and add
-a "DRI" section.
-
-On the DRI web site, in the resources section, you'll find example XF86Config
-files for a number of graphics cards. These configuration files also setup
-DRI options so it's highly recommended that you look at these examples.
-
-The XFree86 4.x server can generate a basic configuration file itself. Sim-
-ply do this:
-
- cd /usr/X11R6/bin
- ./XFree86 -configure
-
-A file named /root/XF86Config.new will be created. It should allow you to
-try your X server but you'll almost certainly have to edit it. For example,
-you should add HorizSync and VertRefresh options to the Monitor section and
-Modes options to the Screen section. Also, the ModulePath option in the
-Files section should be set to /usr/X11R6/lib/modules.
-
-9.3 Start the New X Server
-
-The new X server should be ready to use now. Start your X server in your
-usual manner. Often times the startx command is used:
-
- startx
-
-10. Testing the Server Without Installing It
-
-As mentioned at the start of section 9, developers may want to simply run the
-X server without installing it. This can save some time and allow you to
-keep a number of X servers available for testing.
-
-10.1 Configuration
-
-As described in the preceding section, you'll need to create a configuration
-file for the new server. Put the XF86Config file in your ~/DRI-
-CVS/build/xc/programs/Xserver directory.
-
-Be sure the ModulePath option in your XF86Config file is set correctly.
-
-10.2 A Startup Script
-
-A simple shell script can be used to start the X server. Here's an example.
-
- #!/bin/sh
- export DISPLAY=:0
- ./XFree86 -xf86config XF86Config & \
- sleep 2
- fvwm2 &
- xset b off
- xmodmap -e "clear mod4"
- xsetroot -solid "#00306f"
- xterm -geometry 80x40+0+0
-
-You might name this script start-dri. Put it in your ~/DRI-CVS/build/xc/pro-
-grams/Xserver directory.
-
-To test the server run the script:
-
- cd ~/DRI-CVS/build/xc/programs/Xserver
- ./start-dri
-
-For debugging, you may also want to capture the log messages printed by the
-server in a file. If you're using the C-shell:
-
- ./start-dri >& log
-
-11. Where To Go From Here
-
-At this point your X server should be up and running with hardware-acceler-
-ated direct rendering. Please read the DRI User Guide for information about
-trouble shooting and how to use the DRI-enabled X server for 3D applications.
-
- Generated from XFree86: xc/programs/Xserver/hw/xfree86/doc/sgml/DRIcomp.sgml,v 1.19 dawes Exp $
-
-