"French people love revolutions but are afraid of change."
- Jean-Pierre Raffarin, prime minister of France
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Bullshit!
Monday, July 13, 2009 | Permalink

I'm a big fan of the Penn & Teller Bullshit! show. They usually do a great job at exposing all kinds of bullshit for what it really is. The latest episode takes a jab at everything that video games are blamed for, despite lack of scientic evidence backing up such claims. Well worth watching.

Part 1 Part 2 Part 3

[ 10 comments | Last comment by Rob L. (2009-07-25 11:58:06) ]

Yet another particle trimmer update
Wednesday, July 8, 2009 | Permalink

In the last release I messed up atlases again, so now that's fixed.

I also added an option to optimize vertex ordering in the spirit of these findings. You provide your index buffer and it outputs the vertices in the order that minimizes the internal edges. This option will probably only have a measurable effect on small particles though. But it's a trivial thing to compute, so it doesn't hurt to do it.

Finally I've changed the input options to a more standard and practical format as the number of options have increased, so now you don't need to provide all parameters just because you wanted to change the last one, but instead you can for instance do this to only change maximum hull size:
> ParticleTrimmer imagefile 4 8 -h 40

With these changes I guess the tool is pretty much "final", unless I come up with a solution to the performance problem other than by reducing the number of edges in the original convex hull to a managable number.

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Google to release an OS
Wednesday, July 8, 2009 | Permalink

This is an interesting piece of news. According to the official Google blog they are working on a new OS called "Google Chrome OS". This is excellent news. We seriously lack competition in the OS market where Windows dominates. I have always wanted Apple to release Mac OS X for PC. I'm pretty sure it would be quite successful and be able to give Microsoft a run for the money. But so far they haven't been willing to do so, because they still want to sell their hardware at premium prices. I know it's possible to run Mac OS X on a PC if you're willing to hack around and have the right hardware, but the people doing that are of course a very tiny fraction of the market.

It'll be interesting to see what Google's OS will be like. From the description so far it sounds mostly like a Linux kernel and a browser, which to me doesn't sound like an actual OS, but more like a customized Linux distribution slimmed down for netbooks. But we'll see what it really is when it's released. I for one hope that we'll see a real competitor on this market.

[ 6 comments | Last comment by Shaun (2009-11-02 05:09:54) ]

Particle trimmer updated
Tuesday, July 7, 2009 | Permalink

I have made another update to the particle trimmer. Previous revisions produced somewhat inaccurate results since it didn't take texture filtering into account. For most textures it doesn't matter much, but for low-res textures it can be a big deal. In this revision I've added a subpixel precision mode to deal with this problem (default is a 16x16 split of the area between four texels). As a result a lot more points are added to the convex hull and it now pretty much always has to apply the reduction to 50 vertices. If anyone has an idea of how to do the convex hull reduction other than by brute force I'd like to know. I haven't been able to google up any algorithms for that.

I have also made it handle edge and corner cases correctly.

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Photos of photographers
Thursday, June 25, 2009 | Permalink

I saw this awesome gallery of photographers doing their thing. Fun stuff.

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New gallery
Saturday, June 20, 2009 | Permalink

As usual I'm lagging behind with updating my galleries. The last one was from a year ago. So in an attempt to catch up I've now added another gallery. It's from last fall. So now I'm only about 7-8 months behind.

[ 3 comments | Last comment by Nadja (2009-06-24 11:29:39) ]

Back again
Friday, June 19, 2009 | Permalink

Two week without any updates, what happened?
Well, first there was vacation. Spent some time with friends and family, and in particular congratulated my niece Nadja on her graduation (that's the Nadja you see occasionally posting messages in Swedish in the comments). We went far out in the wilderness, to a camp site in Svanisträsk outside Boden in northern Sweden, with no electricy or anything. Water barrel bathing + sauna + cold lake + friends + bright around the clock makes for a perfect combination. Plus a lot of singing and playing acoustic instruments. In preparation for the event several of us also learned to play the ukulele for a short performance for Nadja. It's a surprisingly simple instrument to play. If you already know guitar it's very easy to pick up. It took me about a week to learn all the chords with relative ease. They are also dirt cheap.

That was last week, this week on the other hand has mostly been wasted on being sick. I'm feeling better now though.

[ 10 comments | Last comment by Humus (2009-07-08 20:01:10) ]

AMD shows first DX11 hardware
Wednesday, June 3, 2009 | Permalink

Some reading about it:
PC Perspective
VR-Zone
Fudzilla

And a youtube video:
AMD demonstrates tessellation on the worlds first DirectX 11 graphics processor

It's nice to see some real DX11 hardware. So I guess this settles a release date this fall. No hints on performance yet though. The question is if the chip that was demonstrated is the high-end offering or mid-range. The chip appears to be quite small, supposedly only 180mm2.

[ 5 comments | Last comment by Fmoreira (2009-06-12 15:52:13) ]

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