From 56e9efa15de5fdc952e56f04276285870214b24d Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Wed, 3 Sep 2003 23:04:02 +0000 Subject: added fbdev/DRI and MiniGLX info --- docs/fbdev-dri.html | 217 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 217 insertions(+) create mode 100644 docs/fbdev-dri.html (limited to 'docs/fbdev-dri.html') diff --git a/docs/fbdev-dri.html b/docs/fbdev-dri.html new file mode 100644 index 0000000000..df33738d91 --- /dev/null +++ b/docs/fbdev-dri.html @@ -0,0 +1,217 @@ + + +Mesa fbdev/DRI Environment + + + +

Mesa fbdev/DRI Drivers

+ + +

1. Introduction

+ +

+The fbdev/DRI sub-project within Mesa brings hardware accelerated OpenGL +rendering to the Linux fbdev environment. +The X Window System / XFree86 is not needed. +

+ +

+Basically, the DRI drivers for hardware +accelerated OpenGL for XFree86 have been ported to fbdev so that X is +not needed. +This means fbdev/DRI works in full-screen mode only. +

+ +

+DRI driver writers may find this simplified environment easier to work in, +compared to the full XFree86/DRI environment. +

+ +

+Much of the work for this project has been done by Jon Smirl and +Keith Whitwell. +

+ +

+To use fbdev/DRI, you'll need a Linux 2.4 or 2.6 kernel. +

+ +

+The fbdev/DRI Mesa code is in the Mesa CVS trunk (to be released as Mesa +5.1 in the future). +

+ + +

2. Compilation

+ +

+Assuming you're starting with a fresh Mesa CVS checkout, do the following: +

+   cd Mesa-newtree
+   cp Makefile.X11 Makefile     # or use a symlink
+   make linux-solo
+

+ +

+When this is finished, check the Mesa-newtree/lib directory +to verify that the following files were made: +

+ +

libGL.so.1.2 - the client-side OpenGL library + (and a few symlinks to it). +
libGLU.so.1.1 - the GLU library (and a few symlinks to it). +
libglut.so.3.7 - the GLUT library (and a few symlinks to it). +
mga_dri.so - DRI driver for Matrox G200/G400 cards. +
r128_dri.so - DRI driver for ATI Rage 128 cards. +
r200_dri.so - DRI driver for ATI R200 Radeon cards. +
radeon_dri.so - DRI driver for original ATI Radeon cards. +
fb_dri.so - software-only fbdev driver. +
miniglx.conf - configuration file for the MiniGLX interface +

+ + +

3. Using fbdev/DRI

+ +

+If XFree86 is currently running, exit/stop the X server so you're +working from the console. +

+ + +

3.1 Kernel Modules

+ +

+You'll need to load kernel modules specific to your graphics hardware. +The following kernel modules should be included with your kernel. +

+ + +

+If you have ATI Radeon/R200 hardware, run as root: +

+   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, run as root: +

+   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, run as root: +

+   modprobe agpgart            # the AGP GART module
+   modprobe mgafb              # the Matrox fbdev driver
+   modprobe mga                # the Matrox DRI kernel module
+

+ +

+Then run lsmod to be sure the modules are loaded. +For a Radeon card, you should see something like this: +

+Module                  Size  Used by    Not tainted
+radeon                110308   0  (unused)
+radeonfb               21900   0  (unused)
+agpgart                43072   1 
+

+ + +

3.2 Configuration File

+ +

+The Mesa-newtree/lib/miniglx.conf file should be installed +in /etc/. +

+ +

+Edit /etc/miniglx.conf to be sure it's set up correctly +for your hardware. +Comments in the file explain the options. +

+ + +

3.3 Running fbdev/DRI Programs

+ +

+Make sure your LD_LIBRARY_PATH environment variable is set to the +Mesa-newtree/lib/ directory. +

+ +

+Change to the Mesa-newtree/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. +

+ + + +

4.0 Troubleshooting

+ +

+If you try to run miniglxtest and get the following: +

+   [miniglx] failed to probe chipset
+   connect: Connection refused
+   server connection lost
+

+It means that the sample_server process is not running. +

+ + + + +

5.0 Programming Information

+ +

+The full OpenGL API is available with fbdev/DRI. +

+ +

+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. +

+ + + + + -- cgit v1.2.3