b799462745
This is a big'un. - **Glyph constraint logic is now done fully on the CPU** at the rasterization stage, so it only needs to be done once per glyph instead of every frame. This also lets us eliminate padding between glyphs on the atlas because we're doing nearest-neighbor sampling instead of interpolating-- which ever so slightly increases our packing efficiency. - **Special constraints for nerd font glyphs** are applied based roughly on the constraints they use in their patcher. It's a simplification of what they do, the largest difference being that they scale groups of glyphs based on a shared bounding box so that they maintain relative size to one another, but that would require loading all glyphs on the group and I'd want to do that on font load TBH and at that point I'd basically be re-implementing the nerd fonts patcher in Zig to patch fonts at load time which is way beyond the scope I want to have. (Fixes #7069) - These constraints allow for **perfectly sized and centered emojis**, this is very nice. - **Changed the default embedded fonts** from 4 copies (regular, italic, bold, bold italic) of a patched (and outdated) JetBrains Mono to a single JetBrains Mono variable font and a single Nerd Fonts Symbols Only font. This cuts the weight of those down from 9MB to 3MB! - **FreeType's `renderGlyph` is significantly reworked**, and the new code is, IMO, much cleaner- although there are probably some edge case behavior differences I've introduced. > [!NOTE] > One breaking change I definitely introduced is changing the `monochrome` freetype load flag config from its previous completely backwards meaning to instead the correct one (I also changed the default, so this won't affect any user who hasn't touched it, but users who set the `monochrome` flag will find their fonts quite crispy after this change because they will have no anti-aliasing anymore) ### Future work Following this change I want to get to work on automatic font size matching (a la CSS [`font-size-adjust`](https://developer.mozilla.org/en-US/docs/Web/CSS/font-size-adjust)). I set the stage for that quite some time ago so it shouldn't be too much work and it will be a big benefit for users who regularly use multiple writing systems and so have multiple fonts for them that aren't necessarily size-compatible.
Packages
This folder contains packages written for and used by Ghostty that could potentially be useful for other projects. These are in-tree with Ghostty because I don't want to maintain them as separate projects (i.e. get dedicated issues, PRs, etc.). If you want to use them, you can copy and paste them into your project.
License
This license only applies to the contents of the pkg folder within
the Ghostty project. This license does not apply to the rest of the
Ghostty project.
Copyright © 2024 Mitchell Hashimoto, Ghostty contributors
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.