My suspicion is that this is a state tracking bug in the mga driver. I looked things over a bit and there is a little overlap between lighting state and texture state in the mga driver (separate specular color).
I also reviewed Mesa's glPopAttrib() code and I don't believe the problem is there. The bug wouldn't be in glPushAttrib() since that function really doesn't change any GL state.
I think someone with an MGA card will have to solve this.
-Brian
Alex Deucher wrote:
I'm forwarding this to the devel list.
Alex
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Subject: [Dri-users] glPushAttrib() From: Domingo Fiesta Segura <[EMAIL PROTECTED]> Date: Wed, 11 Feb 2004 00:02:14 +0100 To: [EMAIL PROTECTED]
Hi all,
Recently I've discovered (after some hours of debugging) that there's a problem with glPushAttrib() which has some unexpected behaviour. Someone probably reported the bug before, see:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=180157
I suspect the problem is DRI specific because I also have a nVidia chip (with nvidia Linux drivers) and the same code behaves as it should. The problem has been encountered in two ATI cards: Radeon Mobility M6 LY (iBook 2.2) and Radeon 8500 (PC).
I was wondering, then, what to do: send a bug-report or, if someone already did or it's just fixed in current version, wait for the Debian package (btw, I use Michel Dänzer's *-dri-trunk Debian packages).
Any ideas? Thanks in advance.
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