Hello,
Apparently ATI drivers have been completely rewritten recently, and new versions have serious bugs, that cause the following problems in Glest:
- Trying to select units or place buildings makes the game slow down a lot.
- Projected shadows are really slow (shadow maps are okay).
We will try work around these bugs in case ATI don't fix them, but by now there are a couple of possible solutions:
a) Revert your video card drivers to Catalyst 7.9 or earlier. The bug seems to be there from catalyst 7.10 to 8.2 (latest version at the moment I write this post). The last working Linux version seems to be 8.40.4. The Linux open source diver seems to work too.
b) If you don't want to do that, and you are under Windows, you just copy the atioglxx.dll file from the 7.9 Catalyst into the Glest folder. A step by step install description is stated
here.
c) As stated before, under Linux you can use the open source drivers, that seem to work fine.
The problem is caused by OpenGL
selection mode being implemented in software. Additionally the problem seems to be better in 8.2 compared to 7.12, so it seems to indicate that ATI knows that this is a serious issue and they are trying to fix it (it doesn't affect Glest only but also Maya and other CAD software apparently).
Everything works fine on NVidia cards which have better drivers. Anyway, we already have a partial fix for it in the svn, and we will work around it eventually if we see ATI doesn't do anything about it.
Martiño.