Choose your own font and size #1154
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What happens if fonts don't fit in a texture within max Tex size? |
Each font only allocates the glyph it actually uses (*), so a font texture of e.g. 4096x4096 can fit a lot of glyphs. If it gets full, the atlas is cleared and filled in again. The atlas can still get full if you use a lot of glyphs of different types and font sizes at the same time. For that to realistically happen though, you are filling your screen with all kinds of different text (or have a lot of varying text of varying sizes in a scroll area). Anyway, if this happens: an error is printed to stderr (I will likely start using the I believe this could happen if you load a big font (which supports tens of thousands of glyphs) and open the Font Book in the demo (which will paint all glyphs in the font), but otherwise I hope this will be extremely rare. For now I think this is a reasonable limitation, as a more robust solution would require multiple font textures which will complicate text painting (needing to switch textures mid-mesh), or require a completely different way of rendering text. (*) All of ASCII is currently pre-cached for each font, but this might change |
In #1154 the default was set to 16k x 512, which is way excessive, as most of it will be blank. This PR changes it to 8k x 64, which will make egui use less RAM and VRAM, and load quicker again. This also decreases the max size from 16k² to 8k². That should be enough.
In #1154 the default was set to 16k x 512, which is way excessive, as most of it will be blank. This PR changes it to 8k x 64, which will make egui use less RAM and VRAM, and load quicker again. This also decreases the max size from 16k² to 8k². That should be enough.
This PR rewrites a lot of the font and
TextStylerelated code so that you can now no longer limited to what's inTextStyle. Now you can use any font size and any font family in all widgets and painting.TextStylestill exists, but has been moved fromepainttoegui, with a look-up-table inegui::Style. It has also been extended withTextStyle::Nameso you can create your own named text styles.FontFamilyalso has aFontFamily::Namevariant so you can name any of your custom font families (ifFontFamily::ProportionalandFontFamily::Monospaceare not enough for you).FontIdis a newstructthat contains aFontFamilyand a size.TODO: