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I just came back from Revision - world's biggest pure demoscene party. It was held in Saarbrücken, Germany. That was first time I attended a demoparty abroad, as I've been going only to the ones in Poland so far, like RiverWash, WeCan, Silly Venture, or AmiWaWa.
I don't like the fact that it happens during Easter, when I usually go visit my parents, but I wanted to see it at least once. Revision was big, with around 700 participants, according to the page with non-mandatory registration - Visitors. There were various kinds of activities - from Seminars to techno party, and of course most importantly - competitions. Revision is a multiplatform demoparty, so there were compo categories dedicated to retro platforms (like Amiga, pixel art or tracker music), as well as modern PCs (like modern graphics, streaming music, PC 4K/8K/64K intro and demo). Entries can be found here: Revision 2017 @ pouet.net.
Many people said that PC 4K Intro category had best quality this year, so it's worth checking. Other than that, productions that I remembered the most are:
Most exciting for me was watching Shader Showdown - a competition where two programmers had to write a pixel shader live on stage, without any documentation or other help, in a time frame of 25 minutes per round. Winner moved on to semifinals and then the final. During each round a DJ was playing some music and its live FFT was available as one of the inputs to the shader. It's amazing to see how good knowledge of programming, graphics and math allows to develop some nice looking visualizations in such a short period of time. I've also heard opinions that watching it gave a good glimpse of how graphics programming looks like and what does it take to make a demo, even for non-technical people.
Here is a gallery of my photos from the event: