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[PR #2959] Reduce text layout CPU usage when DWrite analysis is not needed #25173

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opened 2026-01-31 09:07:45 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 09:07:45 +00:00
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Original Pull Request: https://github.com/microsoft/terminal/pull/2959

State: closed
Merged: Yes

Summary of the Pull Request

It takes many CPU cycles to calculate text layout & font fallback even it's not really necessary. This may seem a little aggresive but it indeed dramatically boost performance.

References

#806

PR Checklist

  • CLA signed. If not, go over here and sign the CLA
  • Tests added/passed
  • Requires documentation to be updated
  • I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan.

Detailed Description of the Pull Request / Additional comments

With the help of #2937 and this PR, vim performance is way more smooth than before.

**Original Pull Request:** https://github.com/microsoft/terminal/pull/2959 **State:** closed **Merged:** Yes --- ## Summary of the Pull Request It takes many CPU cycles to calculate text layout & font fallback even it's not really necessary. This may seem a little aggresive but it indeed dramatically boost performance. ## References #806 <!-- Please review the items on the PR checklist before submitting--> ## PR Checklist * [X] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA * [ ] Tests added/passed * [ ] Requires documentation to be updated * [ ] I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan. <!-- Provide a more detailed description of the PR, other things fixed or any additional comments/features here --> ## Detailed Description of the Pull Request / Additional comments With the help of #2937 and this PR, vim performance is way more smooth than before.
claunia added the pull-request label 2026-01-31 09:07:45 +00:00
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Reference: starred/terminal#25173
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