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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 $
+ 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 $
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 04:06:06 +0000