Hacker News: Kleptine

New comment by Kleptine in "Bilinear interpolation on a quadrilateral using Barycentric coordinates"

Kleptine — Fri, 11 Apr 2025 21:14:55 +0000

To answer some of the questions here, the reason this has not been used before is because this technique requires being able to access the quad definitions (ie. which 4 vertices makeup each quad) within the gpu.

Up until recently with Mesh Shaders, there's really just been no good way to send this data to the GPU and read back the barycentric coordinates you need in the fragment shader for each pixel.

The article offers several options, to support older GPUs, like Geometry Shaders and Tesselation shaders. This is good, but these are really at best Terrible Hacks(tm). Proof of the ability to contort old extensions is not proof of reasonable performance!

Notably, geometry shaders are notorious for bad performance, so the fact that they list them as a viable strategy for older devices makes it pretty clear they aren't thinking much about performance, just possible compatibility.

Still, I think this is very cool, and now that GPUs are becoming much more of a generic computing device with the ability to execute arbitrary code on random buffers, I think we are nearly at the point of being able to break from the triangle and fix this! We hit this triangulation issue several times on the last project, and it's a real pain.

New comment by Kleptine in "Issues with color spaces and perceptual brightness"

Kleptine — Sat, 18 Jan 2025 01:10:05 +0000

Yeah, B/W film was definitely not all that accurate. It was a common practice to use weird makeup, lighting, colors, in order to create a B/W film image that looked correct (see chocolate used for blood).

So in those cases, filmmakers had to counteract the limitations of the b/w transformations in the actual sets.

New comment by Kleptine in "Issues with Color Spaces and Perceptual Brightness"

Kleptine — Sat, 18 Jan 2025 01:08:19 +0000

This is actually a very good point that nobody else has commented on. The very definition of lightness is somewhat ambiguous. I would argue that vividness itself is a unique axis, separate from saturation.

But which axis you care about is very context specific.

New comment by Kleptine in "Issues with Color Spaces and Perceptual Brightness"

Kleptine — Sat, 18 Jan 2025 00:32:15 +0000

This is an incredible reference, thanks.

Composability: Designing a Visual Programming Language

Kleptine — Wed, 24 Apr 2024 06:47:41 +0000

Article URL: https://johnaustin.io/articles/2024/composability-designing-a-visual-programming-language

Comments URL: https://news.ycombinator.com/item?id=40141416

Points: 3

# Comments: 1

Lattice now compiles to .NET IL

Kleptine — Mon, 01 Apr 2024 07:19:29 +0000

Article URL: https://johnaustin.io/articles/2024/lattice-now-compiles-to-net-il

Comments URL: https://news.ycombinator.com/item?id=39891608

Points: 1

# Comments: 0

A Gameplay Programming Puzzle for ECS

Kleptine — Sat, 23 Sep 2023 01:54:50 +0000

Article URL: https://johnaustin.io/articles/2023/a-gameplay-programming-brain-teaser-for-ecs

Comments URL: https://news.ycombinator.com/item?id=37619963

Points: 3

# Comments: 0

Writing a Fast C# Code-Search Tool in Rust

Kleptine — Fri, 07 Apr 2023 04:33:04 +0000

Article URL: https://old.reddit.com/r/rust/comments/12e9rid/writing_a_fast_c_codesearch_tool_in_rust/

Comments URL: https://news.ycombinator.com/item?id=35478055

Points: 1

# Comments: 0

New comment by Kleptine in "Buttondown is a small, elegant tool for producing newsletters"

Kleptine — Tue, 03 May 2022 13:19:20 +0000

Heartily recommend it! We've been using it for a while and it's been great.

The support is great too.

A userstyle to make GitHub diffs more compact

Kleptine — Sat, 23 May 2020 15:32:42 +0000

Article URL: https://github.com/Kleptine/github-compact-style/blob/master/README.md

Comments URL: https://news.ycombinator.com/item?id=23283741

Points: 2

# Comments: 0

RGB to XYZ: The Science and History of Color

Kleptine — Mon, 16 Sep 2019 20:45:12 +0000

Article URL: https://www.youtube.com/watch?v=AS1OHMW873s

Comments URL: https://news.ycombinator.com/item?id=20988405

Points: 2

# Comments: 0

The Unity Timestep (Gamedev)

Kleptine — Tue, 28 May 2019 16:27:27 +0000

Article URL: https://johnaustin.io/articles/2019/fix-your-unity-timestep

Comments URL: https://news.ycombinator.com/item?id=20031662

Points: 2

# Comments: 0

Hacking Unity to Run Hidden Methods

Kleptine — Mon, 14 Dec 2015 01:27:17 +0000

Article URL: http://astrangergravity.com/hacking-unity-from-the-command-line/

Comments URL: https://news.ycombinator.com/item?id=10728851

Points: 1

# Comments: 0

New comment by Kleptine in "[dead]"

Kleptine — Wed, 30 Jul 2014 17:31:13 +0000

For the record, I am on this list.

1. I was not aware this was public. 2. I was told that all rankings should be taken in context compared to others in the 2015 graduating class. Clearly none of these people are any contender to be best in the world at anything.

The people I know on the list are certainly some of the smartest people I know, but take this with a grain of salt.

New comment by Kleptine in "Show HN: Simple group contact sharing"

Kleptine — Sat, 05 Jul 2014 21:35:07 +0000

Made this app while I was learning AngularJS. It's quite useful for getting the contact information of everyone in a group (instead of having to pass around phones and risk missing numbers, etc).

Figured I would throw it out here instead of it sitting around on my hard drive! Comments and feedback welcome!

Show HN: Simple group contact sharing

Kleptine — Sat, 05 Jul 2014 21:33:52 +0000

Article URL: http://numblee.com/

Comments URL: https://news.ycombinator.com/item?id=7993036

Points: 1

# Comments: 1

New comment by Kleptine in "CBS to adapt Zynga game 'Draw Something' for TV"

Kleptine — Fri, 15 Jun 2012 21:54:04 +0000

That hasn't stopped anyone before.

New comment by Kleptine in "The Oatmeal v. FunnyJunk, Part III"

Kleptine — Fri, 15 Jun 2012 21:44:03 +0000

Agreed, while he generally posts with the best of intentions, I can see him easily incriminating himself unintentionally with a haphazard response.

The charity idea was brilliant though.

New comment by Kleptine in "EEG Brainwave-Controlled Pong Game"

Kleptine — Tue, 01 May 2012 02:36:39 +0000

Very cool!