Bug#901409: Very low FPS in Nexuiz after Darkplaces upgrade

[Simon McVittie]

Control: retitle -1 darkplaces: Performance regression in nexuiz on Intel GM45 (~ 2008)
Control: found -1 0~20170829~beta1-1

On Tue, 12 Jun 2018 at 23:16:44 +0300, Evgeny Kapun wrote:
> On 12.06.2018 22:28, Simon McVittie wrote:
> > On Tue, 12 Jun 2018 at 21:27:06 +0300, Evgeny Kapun wrote:
> > > After I upgraded Darkplaces to version 0~20180412~beta1-2 (from
> > > 0~20140513+svn12208-7), Nexuiz slowed down to about 8 frames per second
> 
> Video hardware: Mobile Intel GM45 Express Chipset.
> Software: X.Org X Server 1.19.6.
> Desktop environment: LXDE.

That's approximately 10 year old hardware (the same chipset is in the
Lenovo X200/X200s, released in 2008 with a Core 2 Duo CPU) so it wouldn't
surprise me if the darkplaces developers have brought in a dependency
on an OpenGL feature that is accelerated on newer hardware, but has to be
emulated (slowly) on the GM45.

(Note that CPUs of that generation are no longer supported by Intel and
will not be receiving microcode updates for the Spectre and Meltdown
vulnerabilities.)

    smcv