[Dri-devel] radeon 9000 bug from outer space (related to alpha channel ?)

[Cedric C. <ri...@ha...>]

Hi list !

If a post something that have been reported many times, Im sorry.
But I searched to google and to this ML's archive and didn't find
anything close to what I got.

Ive coded a little game (ensemblist, hosted at savannah), and I just
realized that the game does not work on my new laptop (dell d600, with a
radeon 9000 vide card).

Ive spent my week end to get a simple code that reveal the bug, and
there it is n attachment.

Symptom : after several call to the display function (about 30), the
computer start freezing (strace last words : mmaping something).

The incredible thing here is how the bug is related to the alpha channel
: in the exemple below, if I change the glColor4f by a glColor3f or,
more incredibly by a glcolor4f(r,g,b, 1.), then there is no freeze
anymore. I hope this rings a bell.

Here is the code (wich display nothing, but quit without freezing on
all computers I tested it on, except the dell with the radeon card.
If you want to know if DRI is installed OK on the dell : yes, and quake
3 runs incredibly smooth :-)