[psychonauts] Expected performance on Intel Sandybridge?

[jvoss at altsci.com]

Hi,

It seems like at least part of the blit was done in software. The part I commented out converted a depth buffer.

I reported this to mesa and they fixed it a week ago. I guess they play Psychonauts too. It is in git and I tested it this morning. It works well. For reference, the bug and the commit:
https://bugs.freedesktop.org/show_bug.cgi?id=51328
http://cgit.freedesktop.org/mesa/mesa/commit/?id=75f409d75cacf90df2d6f1d718251a5d5cd92f7f

Thank you for porting Psychonauts to Linux.

Regards,
Javantea

-----Original Message-----
Subject: Re: [psychonauts] Expected performance on Intel Sandybridge?
From: "Ryan C. Gordon" <icculus at icculus.org>
To: psychonauts mailing list <psychonauts at icculus.org>
Cc: jvoss at altsci.com, Jeremy Fitzhardinge <jeremy at goop.org>
Date: Fri, 22 Jun 2012 12:05:56 -0400

> The stack trace for what is calling these functions are:
I may be reading this wrong, but it looks like glBlitFramebufferEXT() is 
doing the blit in software? That's painful.

(That being said, we're way more blitty in Psychonauts than we strictly 
need to be, so fixing this in-game will help everyone...especially these 
drivers, apparently.)

Also: anyone that sees an OpenGL issue and sends in a driver patch is my 
hero.  :)

--ryan.