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[PR #12554] Fix Windows 10 support for nearby font loading #29107

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opened 2026-01-31 09:32:51 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 09:32:51 +00:00
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Original Pull Request: https://github.com/microsoft/terminal/pull/12554

State: closed
Merged: Yes

By replacing IDWriteFontSetBuilder2::AddFontFile with
IDWriteFactory5::CreateFontFileReference and
IDWriteFontSetBuilder1::AddFontFile we add nearby
font loading support for Windows 10, build 15021.

This commit also fixes font fallback for AtlasEngine,
which was crashing during testing.

Finally it fixes a bug in DxEngine, where we only created a "nearby" font
collection if we couldn't find the font in the system collection. This doesn't
fix the bug, if the font is locked or broken in the system collection.

This is related to #11648.

PR Checklist

Validation Steps Performed

  • Build a Debug version of Windows Terminal
  • Put Jetbrains Mono into the writeable AppX directory
  • Jetbrains Mono is present in the settings UI ✅
  • DxEngine works with Jetbrains Mono ✅
  • AtlasEngine works with Jetbrains Mono ✅
**Original Pull Request:** https://github.com/microsoft/terminal/pull/12554 **State:** closed **Merged:** Yes --- By replacing `IDWriteFontSetBuilder2::AddFontFile` with `IDWriteFactory5::CreateFontFileReference` and `IDWriteFontSetBuilder1::AddFontFile` we add nearby font loading support for Windows 10, build 15021. This commit also fixes font fallback for AtlasEngine, which was crashing during testing. Finally it fixes a bug in DxEngine, where we only created a "nearby" font collection if we couldn't find the font in the system collection. This doesn't fix the bug, if the font is locked or broken in the system collection. This is related to #11648. ## PR Checklist * [x] Closes #12420 * [x] I work here * [x] Tests added/passed ## Validation Steps Performed * Build a Debug version of Windows Terminal * Put Jetbrains Mono into the writeable AppX directory * Jetbrains Mono is present in the settings UI ✅ * DxEngine works with Jetbrains Mono ✅ * AtlasEngine works with Jetbrains Mono ✅
claunia added the pull-request label 2026-01-31 09:32:51 +00:00
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Reference: starred/terminal#29107
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