poor drawpoint performance on exa accel
Submitted by weiqi
Assigned to Xorg Project Team
Description
Machine : x86 (Dell PC) OS : RHEL6 (Qt 4.6.2) kernel version : 2.6.32-431 Graphic card : ATI E6460 Xorg driver : use radeon
Attachments: xorg.conf /var/log/Xorg.0.log qt-test.tar.gz
run Qt test program "./DrawPoint -graphicssystem native"
if enable exa 2D accel (default is enable): the resule of DrawPoint is :0.01 FPS (very long time to get result.., Just need to know it's very very slow)
However, if disalbe exa accel through /etc/X11/xorg.conf "Section Device": OPtion NoAccel "True" DrawPoint has a normal performance: 11.4 FPS
I also test Draw long lines with Qt, or x11perf's PutImage, MoveWindow.. they are all better than disable exa-accel. why drawpoint slow?
Version: git