Tag: events

Entries for tag "events", ordered from most recent. Entry count: 121.

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19:41
Sat
24
Sep 2016

Pitfalls of Floating-Point Numbers - Slides

Just as I announced in my previous blog post, today I gave a lecture on a "Kariera IT" event - organized by CareerCon, dedicated to IT jobs.

Here you can find slides from my presentation, in Polish. It's called "Pułapki liczb zmiennoprzecinkowych" ("Pitfalls of floating-point numbers").

Here are links to the Floating-Point Formats Cheatsheet (in English) that I mentioned in my presentation:

Comments (2) | Tags: events teaching math | Author: Adam Sawicki | Share

14:28
Fri
19
Aug 2016

Pitfalls of Floating-Point Numbers - My Lecture on CareerCon

CareerCon is an event organized in various cities in Poland, dedicated to IT jobs, e.g. for programmers. You can find there many companies advertising their job offers. Entrance is free, but requires previous registration on their website. There are also some presentations every time.

24 September 2016 the event will take place in Sopot, where I will give a lecture "Pułapki liczb zmiennoprzecinkowych" ("Pitfalls of floating-point numbers"). I will talk about properties of floating-point data types, which are the same regardless of the programming language you use. I will show their limitations, common mistakes to avoid and some good practices. If you are a professional programmer or a student interested in career in IT, I'd like to invite you to come and listen.

Comments (3) | Tags: events teaching | Author: Adam Sawicki | Share

00:51
Thu
09
Jun 2016

Pixel Heaven and Bajtek Special Issue

Do you remember "Bajtek" magazine? I don't, because I was a little kid back then, but older colleagues told me that in 80's and 90's it was a popular Polish magazine about computers (like Atari, Commodore or Amiga - platforms that were in use at that time). Archival issues can be downloaded for free from atarionline.pl.

Now, 20 years after last one, a new issue has been released. It's a single, special issue - Wydanie specjalne: Bajtek. There is my article inside - "Programowanie grafiki dzi¶" ("Graphics Programming Today"). The article describes briefly a history of graphics cards (from first 3D games, through 3Dfx Voodoo and S3 ViRGE, cards from NVIDIA and ATI/AMD, appearance of OpenGL and DirectX, to invention of shaders), shows graphics pipeline of modern GPU-s and mentions the new generation of graphics API-s (Direct3D 12 and Vulkan).

Many people who were interested in graphics programming, games or demoscene at the time of Bajtek magazine, now have a more "serious" job, whether in software development or something completely different, and they no longer have time for this hobby, so they are not up-to-date with advancements in this technology. So I thought they may like a short update on this subject.

The new issue of Bajtek was first shown on Pixel Heaven - a party that took place 3-5 June 2016 in Warsaw. I've been there and I had a great time. There were many different activities, like indie games exhibition, retro gaming zone, lectures and discussion panels.

Comments (1) | Tags: gpu events teaching productions history | Author: Adam Sawicki | Share

20:34
Thu
31
Mar 2016

Sztukato 2016 - Festival of Arts and Fashion

18-20 March 2016 in Protokultura club in Gdańsk, Poland, an interesting event took place: Sztukato - festival of arts and fashion (Website, Facebook Event). It involved arts gallery, fair of handmade clothes and accessories, fashion shows, concerts and many other activities. I was doing visualizations during the whole event. It was new and interesting experience for me, as I learned a lot during the event, as well as while preparing for it. I especially gained lots of experience in video editing, as I prepared some prerendered video footage. Depending on the circumstances sometimes I played these videos in a loop, sometimes just showed logos of organizers and sponsors and sometimes launched the abstract/psychedelic visuals generated procedurally by my program.

Here is full gallery of my photos from the festival: SZTUKATO 2016 Festiwal Sztuki i Mody @ Facebook.

I can see many VJ-s use Resolume, but for simple displaying images or videos I used Screen Monkey. It's a free program that I came across when browsing VJ Forums. It has some problems (GUI has some minor bugs and it even stops playing videos sometimes), but it also has many useful features (layers, fade in/out, linking clips in a sequence, Schedule and many more).

The biggest problem I had with Screen Monkey is that it didn't want to play any videos after installation. (My environment was: Windows 7 x64 with latest updates, K-Lite Codec Pack Full in latest version, Screen Monkey version 3.7, video files format: MP4 container + MPEG4 Video (H264) video stream) Solution to this turned out to be:

  1. Add any video clip to Screen Monkey Dashboard.
  2. Right-click on this clip, select: Video Options.
  3. Uncheck: Prefer ffdshow Video Decoder.

After going back to my work, I had a thought that there is one big difference between creative work and doing software engineering. When creating something, whether it's an art, writing a book or even coding a small program, you can always come up with SOMETHING even if you lack knowledge, experience or time and the deadline is close. It may be better or worse, client may like it or not, but at least you have SOMETHING and the rest is just a matter of negotiation. When working in software, it's more binary - all-or-nothing. You either meet the specification or not, pass all unit tests or not, you fixed the bug or not. Sure you can also write better or worse code, your solution can be more robust, efficient or better architected, but this has its own problem: Writing bad code increases technical debt, which makes it harder to work with the code in the future while being quite invisible to the client and your manager. On the other hand, when assigned some creative task, you probably launch your editor and start from a blank document every time.

Comments (1) | Tags: vj events | Author: Adam Sawicki | Share

20:21
Mon
19
Oct 2015

Poznań Game Arena + Game Industry Conference 2015

Last weekend Poznań Game Arena together with Game Industry Conference (former ZTG - Zjazd Twórców Gier) took place in Poznań, Poland. I have been there, just like in previous years and I liked it a lot. PGA is advertised as "biggest multimedia and entertainment event in this region of Europe." There were multiple halls filled with exhibitors of various kinds, of course all related to gaming. Lots of gaming hardware have been shown, as well as T-shirts and other fan accessories. I had an opportunity to try Oculus Rift and Samsung Gear VR. Samsung's product seems to have higher resolution, but bigger lag between accelerometer and displayed image. Unfortunately I didn't try HTC Vive (the queue was too long), while they say it is the best of all virtual reality solutions. There was also one hall dedicated to indie games, with lots of productions available to play and discuss with their creators.

While PGA was targeted mostly to gaming fans, game developers gathered in the same time and place for GIC, which consisted of almost 100 talks, panels, workshops and other activities. Industry professionals talked about their games, academics showed their research, enthusiasts discussed their ideas and prototypes... Traditionally, most of the topics were not technical, but rather related to game design or business. Well, most games are made in Unity these days anyway, so probably there is not need to discuss quirks of DirectX or OpenGL for an average game developer. But I still believe that the opportunity for expanding knowledge beyond everyday work, for networking, catching new ideas and getting motivation boost make such events worth attending.

Comments (1) | Tags: events | Author: Adam Sawicki | Share

23:44
Mon
14
Sep 2015

Music Visualizations - Plans for the Future

Last weekend I was showing my music visualizations on two parties. First one was in a club, projected on flat screen, while the second one was an open-air party (my 7th and last one in this summer season :) with the image projected on trees. For this one I had to prepare something different - simple, contrast shapes and single color only, so it could be clearly visible. Here is a small video:

It doesn't look like this because I wanted it exactly this way or because that was my "artistic vision", but just because showing some rotating images downloaded from the Internet and blending transformed feedback from previous frame was the easiest way to start with something interestingly looking.

Now I have tons of ideas to improve this program as soon as I find some free time. Next to some small technical tasks like refactoring code or simply adding new graphical effects, I plan following big TODO-s (with no particular order decided yet):

Comments (2) | Tags: events music psytrance vj | Author: Adam Sawicki | Share

20:28
Fri
03
Apr 2015

My visuals on Headrush party in Protokultura, Gdańsk

Next Saturday, 2015-04-11, you can see my music visualizations on Headrush party in Protokultura club in Gdańsk. There will be 3 scenes with various genres of electronic dance music, and the club is big and very good, so I'm sure it will be great party. My visuals will be shown on psytrance scene. Unfortunately I can't be there myself, but I'm sure my friends Wooffer and Brain Massage will handle setup of this system very well. Some random screenshots:

Comments (12) | Tags: events music psytrance | Author: Adam Sawicki | Share

23:20
Tue
03
Mar 2015

IGK 2015 Conference

On 10-12 April 2015 the 12th edition of IGK gamedev conference is taking place in Siedlce, Poland (see also topic on forum.warsztat.gd). Registration is now open.

I will be there, giving a lecture "On the other side of graphics API. How does graphics driver and chip look like?" (It will be in Polish. Actual title: "Po drugiej stronie API graficznego. Czyli jak wygl±da sterownik i układ graficzny?")

Abstract: A programmer developing games or other applications that utilize GPU uses one of API-s for 3D graphics (e.g. DirectX, OpenGL) or GPGPU (e.g. OpenCL). With examples based on the Intel products, the lecture shows what is on the other side of that API: characteristics and components of graphics driver (especially shader compiler), architecture of a GPU and its instruction set.

Comments (10) | Tags: intel igk events | Author: Adam Sawicki | Share

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