Difference between revisions of "Mesa"

Revision as of 18:33, 7 December 2009

Page under construction... Informations on this page are not guaranteed !!

Installation

• To compile, mesa requires makedepend installed on your Host:

$ sudo apt-get install xutils-dev

• Select it in Buildroot menu:

 armadeus$ make menuconfig

• Choose Mesa

Requires GPM too !!

• Rebuild your rootfs:

 $ make

• and then reflash it.

• copy some demo or examples on your target:

$ cp buildroot/build_armvXX/Mesa-7.0/progs/demos/gears /tftpboot/

# cd
# mkdir -p mesa/demos/
# cd mesa/demos/
# tftp -g -r gears 192.168.1.2  (Host IP)
# chmod a+x gears

Usage

• Prevent framebuffer from going to sleep and cursor from blinking:

# echo -e '\033[9;0]' > /dev/tty1
# echo 0 > /sys/class/graphics/fbcon/cursor_blink

• Launch your demos:

# cd mesa/demos/
# ./gears
....
Defaulting to stdin input
48 frames in  5.034 seconds =  9.535 FPS

• With only ~10fps (on APF27) for the gears demo, you will learn that ARM9 cores without 3D nor Floating points unit really suffer to render 3D scenes in software.
• Demos that are worth to launch: gears, spriteblast, stex3d (long to start), tunnel (textures & fog disactivated)
• Samples that are worht to launch: wave, sphere, olympic
• Demo will take control of the serial console. To quit each demo, press "ESC" on your console.

Note: If you get a "Segmentation Fault" when launching your OpenGL demos, try to do an # export LD_PRELOAD=/lib/libpthread.so.0 just before.

Links

• Mesa Website
• http://www.mesa3d.org/glfbdev-driver.html