libjpeg-turbo
Tetra
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libjpeg-turbo | Tetra | |
---|---|---|
15 | 6 | |
3,582 | 885 | |
1.3% | - | |
8.4 | 4.2 | |
14 days ago | 29 days ago | |
C | Rust | |
GNU General Public License v3.0 or later | MIT License |
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libjpeg-turbo
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Jpegli: A New JPEG Coding Library
> all decoders will render the same pixels
Not true. Even just within libjpeg, there are three different IDCT implementations (jidctflt.c, jidctfst.c, jidctint.c) and they produce different pixels (it's a classic speed vs quality trade-off). It's spec-compliant to choose any of those.
A few years ago, in libjpeg-turbo, they changed the smoothing kernel used for decoding (incomplete) progressive JPEGs, from a 3x3 window to 5x5. This meant the decoder produced different pixels, but again, that's still valid:
https://github.com/libjpeg-turbo/libjpeg-turbo/commit/6d91e9...
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My personal C coding style as of late 2023
Last vestiges of this fact AFAIK were libjpeg, which had a macro NEED_SHORT_EXTERNAL_NAMES that shortens all public identifiers to have unique 6-letter-long prefixes. Libjpeg-turbo nowadays has removed them though [1].
[1] https://github.com/libjpeg-turbo/libjpeg-turbo/commit/52ded8...
- Libjpeg-Turbo 3.0.0
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Why there may never be a libjpeg-turbo 3.1
While I think the move to safer code through Rust and other alternatives is a nice breath of fresh air, I doubt you can get these kinds of optimization without using unsafe code in Rust. These optimized implementations often require some kind of safety-bypassing memory modifications to work as efficiently ad they do.
There's a reason https://github.com/libjpeg-turbo/libjpeg-turbo/tree/main/sim... is filled with assembly files with conditional loading.
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Learn x86-64 assembly by writing a GUI from scratch
Sure. You'll see it very often in codec implementations. From rav1e, a fast AV1 encoder mostly written in Rust: https://github.com/xiph/rav1e/tree/master/src/x86
Large portions of the algorithm have been translated into assembly for ARM and x86. Shaving even a couple percent off something like motion compensation search will add up to meaningful gains.
Or the current reference implementation of JPEG: https://github.com/libjpeg-turbo/libjpeg-turbo/tree/main/sim...
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Announcing zune-jpeg: Rust's fastest JPEG decoder
zune-jpeg is 1.5x to 2x faster than jpeg-decoder and is on par with libjpeg-turbo.
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JDK 21 - Image Performance Improvements
This is interesting from the standpoint of how new JVM features can be used to improve performance (what I presume the article's main purpose to have been), but the image processing improvement itself isn't head-turning. Also, we've found that libjpeg-turbo (https://libjpeg-turbo.org/) is ~5x (IIRC, can re-run my JMH benchmark if anyone wants me to) as fast for decoding JPEGs as ImageIO, so we wouldn't even benefit from this change in 21 much.
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Convenient CPU feature detection and dispatch in the Magnum Engine
libjpeg-turbo: https://github.com/libjpeg-turbo/libjpeg-turbo/blob/main/simd/x86_64/jsimdcpu.asm
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Implementing SVE2 for Open Source Project
libjpeg-turbo
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How to go about implementing file encoding [Question]
For all but the simplest formats (basically BMP), the difficulty of implementing encoding/decoding from scratch is significant - well beyond a beginner's ability, and challenging/time-consuming even for senior developers. So, libraries are used in practice - e.g. libpng and libjpeg-turbo.
Tetra
- Not only Unity...
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What are some less popular but well-made crates you'd like others to know about?
Tetra 2D game library. It's very easy to pick up and use. I'd like to bring more attention to it. https://tetra.seventeencups.net/
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Ray casting tutorial with Tetra engine (everything works now)
Tetra crate link: https://crates.io/crates/tetra
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Is there any 2d only game library with high stuff. I think it would be light-er than bevy and won't crash my PC. Like pygame for python for an instance, supporting collision and stuff in Rust!!!!?
I've also used GGEZ and heard good things about Tetra.
- Minimal graphics crate for Rust
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Looking for an open-source project to join part-time
and speaking of game engines, tetra is a really nice one. it's kind of the opposite of bevy - it doesn't tell you how to architect your game, it just gives you some basic graphics/input/audio tools, and you're on your way.
What are some alternatives?
ImageMagick - 🧙♂️ ImageMagick 7
Silent-Gear - Modular tool/armor mod (formerly part of Silent's Gems)
libwebp - Mirror only. Please do not send pull requests. See https://chromium.googlesource.com/webm/libwebp/+/HEAD/CONTRIBUTING.md.
ggez - Rust library to create a Good Game Easily
orion - Usable, easy and safe pure-Rust crypto
bevy - A refreshingly simple data-driven game engine built in Rust
bloom - The simplest way to de-Google your life and business: Inbox, Calendar, Files, Contacts & much more
macroquad - Cross-platform game engine in Rust.
virtualgl - Main VirtualGL repository
Amethyst - Data-oriented and data-driven game engine written in Rust
Rustup - The Rust toolchain installer
RG3D - 3D and 2D game engine written in Rust [Moved to: https://github.com/FyroxEngine/Fyrox]