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[PR #4716] Scale retro terminal scan lines #25900

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opened 2026-01-31 09:12:30 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 09:12:30 +00:00
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Original Pull Request: https://github.com/microsoft/terminal/pull/4716

State: closed
Merged: Yes

Summary of the Pull Request

  • Scale the retro terminal effects (#3468) scan lines with the screen's DPI.
  • Remove artifacts from sampling wrap around.

Before & after, with my display scale set to 350%:
Scaling scan lines

Before & after showing artifact removal, with my display scale set to 100%, and image enlarged to 400%:
Sampling artifacts annotated

PR Checklist

Detailed Description of the Pull Request / Additional comments

Adds a constant buffer, which could be used for other settings for the retro terminal pixel shader.

I haven't touched C++ in over a decade before this change, and this is the first time I've played with DirectX, so please assume my code isn't exactly best practice. 🙂

Validation Steps Performed

  • Changed display scale with experimental.retroTerminalEffect enabled, enjoyed scan lines on high resolution monitors.
  • Enabled experimental.retroTerminalEffect, turned the setting off, changed display scale. Retro tabs still scale scan lines.
**Original Pull Request:** https://github.com/microsoft/terminal/pull/4716 **State:** closed **Merged:** Yes --- <!-- Enter a brief description/summary of your PR here. What does it fix/what does it change/how was it tested (even manually, if necessary)? --> ## Summary of the Pull Request - Scale the retro terminal effects (#3468) scan lines with the screen's DPI. - Remove artifacts from sampling wrap around. Before & after, with my display scale set to 350%: ![Scaling scan lines](https://user-images.githubusercontent.com/38924837/75214566-df0f4780-5742-11ea-9bdc-3430eb24ccca.png) Before & after showing artifact removal, with my display scale set to 100%, and image enlarged to 400%: ![Sampling artifacts annotated](https://user-images.githubusercontent.com/38924837/75214618-05cd7e00-5743-11ea-9060-f4eba257ea56.png) <!-- Please review the items on the PR checklist before submitting--> ## PR Checklist * [x] Closes #4362 * [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. Issue number where discussion took place: #xxx <!-- 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 Adds a constant buffer, which could be used for other settings for the retro terminal pixel shader. I haven't touched C++ in over a decade before this change, and this is the first time I've played with DirectX, so please assume my code isn't exactly best practice. 🙂 <!-- Describe how you validated the behavior. Add automated tests wherever possible, but list manual validation steps taken as well --> ## Validation Steps Performed - Changed display scale with experimental.retroTerminalEffect enabled, enjoyed scan lines on high resolution monitors. - Enabled experimental.retroTerminalEffect, turned the setting off, changed display scale. Retro tabs still scale scan lines.
claunia added the pull-request label 2026-01-31 09:12:30 +00:00
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Reference: starred/terminal#25900
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