Oscilloscope Vector Game: Live on Dirty Rectangles Online Allen P. 2020-05-14 | I've been attending the Dirty Rectangles video game meetup in Ottawa for almost 10 years. We just had the first online meetup during the pandemic where I showed off my progress on the vector video game engine that I'm creating!Small correction: at 11:30 I meant Y coordinates, not X coordinates :)Here are some relevant links:http://www.dirty-rectangles.comhttp://allenwp.com/blogtwitter.com/AllenPestalukyoscilloscopemusic.commonogame.net
Godot Game Engine Rendering to an Oscilloscope Allen P. 2024-09-13 | I have ported my vector display rendering engine to the Godot game engine. The audio is the X axis video signal. In this recording, I play around with different post processing effects to make interesting sounds and visuals.I recorded this after showing off the tech at the Dirty Rectangles Toronto game dev meetup where we discovered it can be fun to use this tooling as an audio synthesizer!Credit to Jerobeam Fenderson of Oscilloscope Music for figuring out you can use a DC coupled audio device as a DAC for this sort of thing!
Grapple Racer Allen P. 2023-02-28 | 3D Video Game Engine with Sample GameTechnology: C/C++, OpenGLResources: GLUTDate: Winter Term, 2008Grapple Racer was created as a sample game for a racing game engine designed as a term project in a third year 3D Computer Graphics class at Carleton. Using only low-level APIs and toolkits, Allen learned the fundamentals of 3D graphics programming, right down to manipulation of vectors and matrices to create captivating high speed game physics with tight and fluid acceleration-based control.More details here: allenwp.com/game-dev
Splatoon 3: Splatfest World Premiere 1.1.0 Input Lag Allen P. 2022-08-26 | Input Lag in Splatoon 3 is basically the same as Splatoon 2: http://aresplatooncontrolsfixed.com
Dirty Rectangles Online: Measuring HDMI Audio Input Lag Using a Wii U Allen P. 2021-05-21 | At the May, 2021 online Dirty Rectangles meetup, I presented my method of measuring HDMI Audio Input Lag (aka Audio Latency or Audio Delay). You can find the blog post that details this approach here: allenwp.com/blog/2021/05/12/how-to-measure-hdmi-audio-input-lag-using-a-wii-u
Subtleties of Rendering to a Vector Display: Live on Ottawa Tech Sphere Online Allen P. 2020-07-15 | In June, 2020, I made this presentation at a local game dev meetup called Tech Sphere, which was hosted online during the pandemic. This demonstration and talk was a little bit rambley (I only spent an hour preparing), but I go over a lot of the details and challenges working with a vector display for video games.For a summarized talk, check out my earlier presentation at the Dirty Rectangles Online: youtu.be/t2i9rZ1DvGoHere are some related links:http://allenwp.com/blogtwitter.com/AllenPestaluky
MIDI Controller for my Game Engine: Live on Dirty Rectangles Online Allen P. 2020-07-15 | At this Dirty Rectangles Online event I showcased my work on integrating a MIDI controller into my video game engine to tweak properties while running my game.
16 hr Game Jam: Moon Dance to Anamanaguchis Air On Line Allen P. 2019-11-21 | I liked Anamanaguchi's song "Air On Line", so I game jammed a little visualization of it during a 16 hour game jam. The player can create the pink/purple cubes by clicking and moving the mouse around, giving the player a way to interact and "dance" while the song plays. Check out the song/music video here: youtube.com/watch?v=nnq1ApucY4g
Switch Pro vs. GameCube Latency Test for Super Smash Bros Ultimate Allen P. 2018-12-10 | This video compares the lag/latency between a GameCube and Switch Pro Controller in Super Smash Bros. Ultimate.http://octategaming.comYou can find my other video that compares USB wired vs. wireless Switch Pro Controller in detail here: youtube.com/watch?v=avvmck40cIw---* SUMMARY *---- USB Wired vs. Wireless latency remains unchanged since the last test: Most presses from wired USB mode register at least one frame later than from wireless mode.Wireless Switch Pro Controller vs. GameCube:- 83% of wireless Pro Controller button presses registered on the same frame as the GameCube controllers.- 14% of wireless Pro Controller button presses registered one frame later than the GameCube controllers.- 3% of wireless Pro Controller button presses registered one frame earlier than the GameCube controllers.- Of 1010 button presses, both GameCube controllers always registered on the same frame.- Wireless Pro Controllers varied by 1 frame 10% of the time.---* DETAILED RESULTS *---* Wired vs. Wireless Test: *Total button presses: 250Newer Pro Controller Wired faster by 2 frames: 1Newer Pro Controller Wired faster by 1 frames: 1Newer Pro Controller Wired same: 48Newer Pro Controller Wired slower by 1 frames: 184Newer Pro Controller Wired slower by 2 frames: 16* Wireless vs. GameCube Test: *Between each test, I changed:- The position of the dock relative to the wireless pro controllers- The USB port that the GameCube Adapter was plugged into- The GameCube Adapter port that each GameCube controller was plugged into- The port of my circuit that each controller was attached toTotal button presses: 1,010Test 1 (249 button presses):[Black GC Adapter plugged into bottom side USB port]Older Pro Controller faster by 1 frames: 0 = 0%Older Pro Controller same: 171 = 69%Older Pro Controller slower by 1 frames: 78 = 31%Newer Pro Controller faster by 1 frames: 1 = 0%Newer Pro Controller same: 189 = 76%Newer Pro Controller slower by 1 frames: 59 = 24%Older Pro Controller faster than Newer Pro Controller: 1Newer Pro Controller faster than Older Pro Controller: 21Test 2 (260 button presses):[Black GC Adapter plugged into top side USB port]Older Pro Controller faster by 1 frames: 13 = 5%Older Pro Controller same: 216 = 83%Older Pro Controller slower by 1 frames: 31 = 12%Newer Pro Controller faster by 1 frames: 14 = 5%Newer Pro Controller same: 222 = 85%Newer Pro Controller slower by 1 frames: 24 = 9%Older Pro Controller faster than Newer Pro Controller: 15Newer Pro Controller faster than Older Pro Controller: 23Test 3 (251 button presses):[Black GC Adapter plugged into back/inside USB port]Older Pro Controller faster by 1 frames: 0 = 0%Older Pro Controller same: 213 = 85%Older Pro Controller slower by 1 frames: 38 = 15%Newer Pro Controller faster by 1 frames: 7 = 3%Newer Pro Controller same: 218 = 87%Newer Pro Controller slower by 1 frames: 26 = 10%Older Pro Controller faster than Newer Pro Controller: 0Newer Pro Controller faster than Older Pro Controller: 18Test 4 (250 button presses):[Black GC Adapter plugged into top side USB port]Older Pro Controller faster by 1 frames: 5 = 2%Older Pro Controller same: 223 = 89%Older Pro Controller slower by 1 frames: 22 = 9%Newer Pro Controller faster by 1 frames: 14 = 6%Newer Pro Controller same: 224 = 90%Newer Pro Controller slower by 1 frames: 12 = 5%Older Pro Controller faster than Newer Pro Controller: 2Newer Pro Controller faster than Older Pro Controller: 21---* VERSION INFO *---System version: 6.2.0Super Smash Bros. Ultimate version: 1.1.0Controllers: Up to date firmware as of system version 6.2.0GameCube Controller Adapter: Nintendo Switch refresh purchased Nov 2018Player 3 GameCube Controller: Super Smash Bros. Ultimate refresh purchased Nov 2018Player 4 GameCube Controller: Original GameCube controller purchased around 2002"Newer" Pro Controller: New stock purchased Nov 2018"Older" Pro Controller: Original Switch controller purchased between March and June 2017
Switch Input Lag: Splatoon 2 is the Worst Allen P. 2017-09-16 | http://aresplatoon2controlsfixed.comThis test was performed with a Dell U2312HM monitor that has 1.6ms of input lag according to the Leo Bodnar input lag testing device. Video was taken at 400fps and played back at 14.985fps. Latency was calculated by measuring the time between the button press and the end of the resulting output frame (latency includes the entire duration of the resulting output frame). Many button presses were analysed to discover the expected 16.6ms spread and the minimum latency was recorded and reported in this video.There are many reasons that the input to output latency of a game may be greater than the latency reported in the video. Here is a brief explanation of some of these reasons:- A TV/monitor may add additional latency from video processing - Input will be polled once per frame. This means that it matters when a button is pressed. Sometimes you will press a button right before the input state is polled, meaning no additional latency. Other times you will press a button right after the input state is polled, meaning your input will be delayed an entire frame (16.67ms) before it is processed. Because of this, a variance of somewhere between 0 and 16.67ms of additional latency is normal for any 60fps console game. - Wireless interference may require a retransmission, which takes additional time (I'm not sure how much time this takes, but I would expect it is generally negligible)
Splatoon 2 vs. 1 Motion Controls & Latency Comparison Allen P. 2017-07-23 | Both monitors were identical model with the same settings.Versions:Switch 3.0.0Splatoon 2 1.1.1Wii U 5.5.2 USplatoon 1 2.12.0
任天堂SwitchのProコントローラー： 有線通信vs.無線通信の遅延研究テスト Allen P. 2017-07-12 | 見てくれてありがとう！通訳はDJKC校正してくれたみかちゃんねるのみかちゃんにありがとうございます！ youtube.com/user/mikachanne/about概要ノイズの少ない場所で有線コントローラーの押しが無線より１フレーム遅く記録するチャンスが６３％有線コントローラーの押しが無線より２フレーム遅く記録するチャンスが８％ドックに無関係ノートウルIIもテストしてみたけどけっかが同じだった。ARMSの問題じゃなさそうだ。同じ: 41/102 = ~40%無線より１フレーム遅く記録した: 42/102 = ~41%無線より２フレーム遅く記録した: 19/102 = ~17%Proコントローラーの有線通信方法1.ACアダプターを接続したNintendo Switchドックに、USB充電ケーブルでProコントローラーをつなぐ。2.Switch本体をドックにセットして起動し、HOMEメニューで「設定」を選択する。3.「コントローラーとセンサー」→「Proコントローラーの有線通信」を選び、決定ボタンで「OFF」から「ON」に切り替える。support.nintendo.co.jp/app/answers/detail/a_id/34532/~/【switch】nintendo-switch-proコントローラーを有線で接続して操作することはできますか前にWiiUのProコントローラーとゲームキューブの有線コントローラーをスマブラで同じ研究をしたyoutu.be/xtCgo7YR-LQ （英語のみ）データテスト１プレーヤー１がドックの上のポートに繋がるプレーヤー２が無線結果同じ: 56無線より１フレーム遅く記録した: 164無線より２フレーム遅く記録した: 30テスト２プレーヤー１がドックの上のポートに繋がるプレーヤー２が無線コントローラーと回路のポジションがテスト１の逆結果同じ: 32無線より１フレーム遅く記録した: 60無線より２フレーム遅く記録した: 7テスト３プレーヤー１が無線プレーヤー２がドックの上のポートに繋がる結果同じ: 82無線より１フレーム遅く記録した: 130無線より２フレーム遅く記録した: 8テスト４プレーヤー１がスイッチに繋がるプレーヤー２が無線結果同じ: 49無線より１フレーム遅く記録した: 147無線より２フレーム遅く記録した: 24テスト５プレーヤー１が無線プレーヤー２がスイッチに繋がる結果同じ: 71無線より１フレーム遅く記録した: 130無線より２フレーム遅く記録した: 12その他ARMSの1.1.0もテストしたけど何も変わらなかったUSBケーブルやドックと回路のポートを変わっても結果が同じ
Switch Pro Controller: Wired vs. Wireless Latency Test Allen P. 2017-06-29 | (Correction: this circuit pressed the X button, not the A button)* SUMMARY *In a low wireless noise environment:Approx. 63% chance a wired Pro Controller will register 1 frame later than a wireless Pro Controller.Approx. 8% chance a wired Pro Controller will register 2 frames later than a wireless Pro Controller.The Switch Dock does not affect wired latency.* NOTES *I also performed a much smaller test with Ultra Street Fighter II to find similar results, proving this is not a problem exclusive to ARMS:Tie: 41/102 = ~40%Wired 1 frame later: 42/102 = ~41%Wired 2 frames later: 19/102 = ~17%To enable wired communication on Switch Pro Controller: head to System Settings - Controllers and Sensors - Pro Controller Wired Communication [source: http://en-americas-support.nintendo.com/app/answers/detail/a_id/22525/~/nintendo-switch-system-updates-and-change-history ]This same test was previously performed to compare Wii U Pro controller with wired GameCube controllers for Smash Bros for Wii U: youtu.be/xtCgo7YR-LQ* DETAILED RESULTS **Test 1*Player 1 wired to dock top portPlayer 2 wirelessResults:Tie: 56Wireless 1 frame faster: 164Wireless 2 frames faster: 30*Test 2*Player 1 wired to dock top portPlayer 2 wireless(Compared to Test 1: controllers and lag test circuit have been swapped)Results:Tie: 32Wireless 1 frame faster: 60Wireless 2 frames faster: 7*Test 3*Player 1 wirelessPlayer 2 wired to dock top port Results:Tie: 82Wireless 1 frame faster: 130Wireless 2 frames faster: 8*Test 4*Player 1 wired directly to switchPlayer 2 wirelessResults:Tie: 49Wireless 1 frame faster: 147Wireless 2 frames faster: 24*Test 5*Player 1 wirelessPlayer 2 wired directly to switchResults:Tie: 71Wireless 1 frame faster: 130Wireless 2 frames faster: 12Additional Tests:- I have tested again with ARMS version 1.1.0 and there are no differences in results.- I have tested with different USB cables and different ports on my test circuit and the Switch Dock. No cables or ordering changes make a difference on results.
iOS 10 Touch Screen Problem (All devices) Allen P. 2017-02-17 | This video shows a software problem with how iOS 10 registers (or does not register) tap gestures near the right and left sides of the screen. This problem was likely introduced to mitigate accidental touches on the side of the screen caused by the palm of your hand on larger "plus" sized phones, but proves to be simply frustrating for smaller phones like the SE.I've tried with demo units in the Apple Store -- it happens on all devices.I've tried with alternate keyboards, like GBoard, and it still happens.
Chevy Volt LT 2017 Audio System Problems Allen P. 2016-12-04 | Audio output problem with auxiliary input and bluetooth audio in 2017 Chevy Volt LT. Software version 84089006 Gracenote 23199236. See this description for lots of details:Forum thread here: http://gm-volt.com/forum/showthread.php?268097-Chevy-Volt-LT-2017-Audio-System-Problems-(Aux.-input-BloothoothOccurrence test results:1:36:11iPhone 4S version info:1:32:54Android Nexus LG 5x version info:1:35:04---*** PROBLEM 1 ***- Audio output does not work -Both auxiliary input audio and bluetooth audio output do not work at all when the car is started and will not work until the car is turned off. This problem appears to happen randomly, but happens regardless of whether a bluetooth device is paired.Demonstrations:When starting car with iOS bluetooth connection:1:5810:5915:5428:14When starting car with no auxiliary input and NO bluetooth connections:53:441:23:521:30:05When starting car with Android bluetooth connection:1:06:561:17:43---*** PROBLEM 2 ***- Auxiliary input audio makes glitch sounds -Both auxiliary input audio and bluetooth audio output do not work at all when the car is started and will not work until the car is turned off. This problem appears to happen randomly, but happens regardless of whether a bluetooth device is paired.Demonstrations:41:54---*** PROBLEM 3 (minor issue) ***- Audio takes abnormal time to start -Sometimes, regardless of whether a bluetooth device is connected, the audio system takes an abnormal amount of time to start. Before it starts, a fan somewhere behind the main console can be heard spinning briefly. Audio playback will start after the fan finishes spinning. This is a minor issue to me, but I thought this might be relevant information to pass on. (To me, it sounds like a part of the HMI module has crashed when trying to boot followed by a restart where the fan can be heard spinning... But that's just a guess I'm making about what's happening.)Demonstrations:13:1436:591:14:30(and many more through the test process)---*** PROBLEM 4 (minor issue) ***- Chime sounds are staticy/glitchy -Sometimes the "bluetooth connected" chime sounds staticy/glitchy. This is a minor issue to me, but I thought this might be relevant information to pass on.Demonstrations:17:01(and many more through the test process)---A GM T.A.C case has been opened by my dealer regarding this issue (opened on Nov. 29, 2016).This video was taken after the HMI module was replaced. Replacing the HMI module appears to have made no change to the behaviour and problems.HMI module was replaced during a service visit to my dealer (Myers, 1200 Baseline Road, Ottawa, Canada) to attempt to resolve the problem. The third party "York Electronics" has been dealing with this issue.
SSB Wii U Speed test: GameCube VS. Wii U Pro controller - Which is faster? Allen P. 2015-09-13 | This video compares the lag/latency between a GameCube and Wii U Pro controller in Super Smash Bros. for Wii U.Check out further discussion at Smashboards: http://smashboards.com/threads/wii-u-controller-latency-comparison-gc-vs-gamepad-pro-etc.372697---* SUMMARY *In a low wireless noise environment:Approx. 55% chance a Wii U Pro controller will register 1 frame later than a GameCube controller.A less than 1% chance a Wii U Pro controller will register 2 frames later than a GameCube controller.* DETAILED RESULTS *- 438 / 1002 button presses registered on the same frame for all controllers (~44%)- 556 / 1002 button presses registered the Wii U Pro controller one frame later than the GameCube controllers (~55%)- 7 / 1002 button presses registered the Wii U Pro controller two frames later than the GameCube controllers (less than 1%)- 1 / 1002 button presses registered a single GameCube controller one frame earlier (much less than 1%)
Note 4 Gear VR Scaning 1200fps Allen P. 2015-05-25 | This is a 1200fps video, played back at 30fps, of the Samsung Note 4 when running in VR mode (low persistence progressive scan).You can see here that the scanning happens in "portrait" mode, even though the device is in "landscape" mode. That is, the screen is scanned left to right, starting at the top if the device was held in a portrait orientation... This results in alternating drawing between left and right eye. If the game is running at 60fps, then the frame will be "more stale" for the right eye -- but TimeWarp takes care of this by re-projecting for each eye individually, so it's ends up not being a problem.But TimeWarp doesn't continuously re-project as an eye is scanning, so this means that the right side of /each/ eye ends up being more stale than the left. Not by a considerable amount, though... about max 8ms variance from left-to-right side of an eye (half of a 60fps frame).
Why SteamVR + HTC Vive blows away (current) competition Allen P. 2015-03-23 | I'm a VR developer who got to try SteamVR + HTC Vive at GDC 2015. There are two key reasons why SteamVR is so groundbreaking and I describe them in this video.I'm a developer on the award winning VR game Keep Talking and Nobody Explodes (www.keeptalkinggame.com)
Jump-Up-A is different than other Jump-A attacks in Smash Bros Allen P. 2014-10-26 | Discussion here: http://smashboards.com/threads/mechanics-techniques-general-q-a.368206/page-7#post-17855867This is old news, but for those who weren't aware yet, there is a difference between a rapid Jump-Up-A and all of the other Jump-A attacks. I didn't test N64 version, but this behaviour has been around since Melee at least.Video shows 3DS. This is the exact same behaviour as Brawl.This is similar behaviour to Melee -- except that in Melee, your A attack would simply not register at all if it happened soon enough after your jump unless it was an Up-A attack (in which case it would register as a Flick-Up-A, similar to Brawl and 3DS).
SSB 3DS Responsiveness Test Allen P. 2014-10-11 | This is a proof of concept towards a test that I might do comparing Gamecube and Gamepad/Pro controller latency on the Wii U version. All the details on my plans can be found here:http://smashboards.com/threads/wii-u-controller-latency-comparison-gc-vs-gamepad-pro-etc.372697
Visualising the OpenGL 3D Transform Pipeline Using Unity Allen P. 2013-10-12 | http://allenwp.com/blog/2013/10/12/visualising-the-opengl-3d-transform-pipeline-using-unityThis tool was designed to provide a quick visual refresher on the coordinate systems used during the 3D transform pipeline in OpenGL and Unity. If you're planning on doing any advanced non-standard vertex transformations, especially in the vertex shader, this tool might help you refresh your memory and will enable you to simulate your transforms in a visualized, debuggable environment rather than blinding coding in the vertex shader. Or, if you're new to 3D graphics, this tool might help you gain a better visual understanding of 3D graphics theory.
Windows 8 Consumer Preview with a mouse Allen P. 2012-03-12 | Why Windows 8 Consumer Preview with a mouse sucks and one way that Microsoft could make it better. I believe the only way to send feedback right now is through the Microsoft Answers Forum: http://answers.microsoft.com/en-us/windows/forum/windows_8
IGDA Ottawa: Indies in the Classroom Allen P. 2011-03-20 | This video will make a lot more sence if you have the slides that go along with it -- You can find them here:http://allenwp.com/blog/2011/04/22/igda-ottawa-indies-in-the-classroom-talkThis meetup was focused on students going above and beyond class requirements and taking their games to the next level. The audience was comprised mainly of students in game development programs or recent graduates. The topics covered include the following:- Porting from Windows to Xbox 360 with XNA- Xbox Live "Indie Games"- Other general game design topics for Hideout!
Hideout! for Xbox 360 Allen P. 2010-08-16 | Initially developed as a single term fourth year project in Interactive Multimedia and Design at Carleton University by 5 students, Hideout! has now been remastered and made available on Xbox Live Indie Games. Find out more details at allenwp.com/hideout
Toy Factory RTS Promo Video Allen P. 2010-05-27 | Download now at allenwp.com/toyfactory!In Toy Factory, the player takes the role of a child in a toy room battling against friends by building an army of custom designed toys. These toys can be anything from hammer wielding vacuums to dart gun equipped airplanes -- the only limit is your imagination!
Allen Pestaluky: Black and White Balance Allen P. 2010-03-26 | Download here: allenwp.com/bawb (requires a computer that can run XNA games)
Hideout! Allen P. 2009-12-19 | Fourth year term project completed from initial concept to final implementation in only three months! This was during the busiest term of our schooling in Interactive Multimedia and Design at Carleton University. Download and find out more about the game here:http://hideout.allenwp.com
3D Video Game Controller Allen P. 2008-08-02 | Created for a third year 3D modeling class created in Maya.
Grapple Racer Allen P. 2008-07-30 | Grapple Racer video game programmed in OpenGL using GLUT and a tonne of math. :) Check the projects page to download: http://allenwp.com
Spatula-man [Episode 1] Trailer Allen P. 2006-08-29 | It's time to get ready for the first installment of this spatulus new mini-series!
