Bug 23250

Summary:	[Regression] OpenGL game is very slow with DRI2, was fast with DRI1
Product:	Mesa	Reporter:	Achim Frase <achim.frase>
Component:	Drivers/DRI/i915	Assignee:	Eric Anholt <eric>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Achim Frase 2009-08-11 05:37:41 UTC

The OpenGL game Clonk Rage gets very slow if I throw flintstones at some trees. With DRI1 everything is very fast but with DRI2 it gets really slow.

http://www.clonk.de/cr.php?lng=en

I have tested this with intel g45 (X4500HD) and gm945 the show both the same behaviour.
This problem exists since the introduction of DRI2. I have tested it against latest kernel and xorg-edgers ppa.

I have created a little demo video where you can see how big the differers between DRI1 and DRI2 is.
http://rapidshare.com/files/266164313/clonk.ogv

Regards
Achim

Comment 1 Eric Anholt 2009-10-09 14:20:52 UTC

I think I've reproduced the problem but it took me a while to get to one of the exploding items to do it.  Is there an easy level full of them I can use for debugging?

Comment 2 Achim Frase 2009-10-10 00:42:51 UTC

(In reply to comment #1)
> I think I've reproduced the problem but it took me a while to get to one of the
> exploding items to do it.  Is there an easy level full of them I can use for
> debugging?

I think the map 'Monsterkill' is the right one.

Start Game → Easy Worlds → Monsterkill

In this map you have 50 Gold. You can buy some flintsontes in you house.

Regards
Achim

Comment 3 Eric Anholt 2010-10-14 15:51:41 UTC

The current version I got from the site doesn't appear to have that map.  I went around a couple of maps, grabbing small rocks and throwing them, and didn't see the performance hit.  Could you try and see how things are for you now?

Comment 4 Achim Frase 2010-10-15 01:54:47 UTC

The game runs much better these days.
I think I can mark this bug as fixed.

Regards
Achim

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