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Nothing has really changed versus the Clutter 0.8 version but the port has provided the opportunity to resolve some performance issues and copy Neil Roberts' clever texture cache from Aisleriot's experimental Clutter backend to Gnometris. Also, as a result of the libgames-support addition of libcanberra-gtk for sound, the sdl-mixer is no longer required for audio mixing of the sound effects (as long as you have PulseAudio). I tried to record sound for this screen cast, but PulseAudio would not allow recording from the sink monitor without some nasty buffer under-runs and 100% CPU utilization.

On the topic of CPU utilization, it's less than 5% while playing--so it turned out battery friendly. Also, note that I'm running this in a compositor. So, DRI2 seems to be quite happy with this.

This resembles very closely what you'll see in GNOME 2.28. Clutter is mandatory for Gnometris for 2.28. In a later post, I will discuss which games are slated for Clutter in 2.30.

There are a number of small, cosmetic issues that need to be resolved. If I have time, I may add a few additional effects.

Enjoy!

The screen cast is here (updated MIME type).

Comments

jasondclinton
Aug. 28th, 2009 02:46 pm (UTC)
Re: Performance without hardware accelerated OpenGL?
I tried it with LIBGL_ALWAYS_SOFTWARE=1 and it is unplayable. If anyone cares about software rendering, someone needs to spend time on the Mesa software renderer performance. There's no technical reason why it should be as slow as it is; it's there as a kind of conformity test and not really intended to be used as a primary rendering method--that could change. I suspect that no one will care, though.

Realistically, everyone should have hardware acceleration except for a people running a GNOME desktop on server motherboards (the kind that, for example, make it in to 1U and 2U systems). This one use case should obviously not care about playing games. Workstation motherboards typically do not have on-board graphics and rely on an ATI or NVidia card for video--these are supported by Linux well.

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jasondclinton
Jason D. Clinton

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