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[PR #9026] Add animated shader samples #27384

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opened 2026-01-31 09:21:39 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 09:21:39 +00:00
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Original Pull Request: https://github.com/microsoft/terminal/pull/9026

State: closed
Merged: Yes

Summary of the Pull Request

  • Adds two simple animated shaders to the pixel shaders sample folder
  • Updates the readme in the pixel shaders sample folder to add a section explaining the animated shaders
  • Modifies some comments in existing shader samples

PR Checklist

  • CLA signed. If not, go over here and sign the CLA
  • 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: #8994

Detailed Description of the Pull Request / Additional comments

The two shaders I wrote are not especially pretty or interesting, but they should hopefully serve as simple examples for anyone looking to do animated effects. One simply draws a line of inverted pixels that scrolls down the screen, and the other fades the background back and forth between two colors.

I've added a new section to the readme explaining how the shaders work to achieve animated effects.

I've also updated the comments on the existing shaders to clear up a couple of things:

  1. Be more explicit that Time represents seconds since the shader loaded. Though obvious in hindsight, this was not clear to me when I was first learning/experimenting
  2. Explain that tex ranges from 0,0 to 1,1. This is important because, when trying to port GLSL shaders from shadertoy, I at first assumed fragCoord and tex are the same thing but the former actually ranges from 0,0 to the resolution of the canvas, so some of the math doesn't work out if you just substitute it with tex.

Any and all feedback welcome.

Validation Steps Performed

I ran the shaders manually in a dev build of the Terminal. I auto-spellchecked and manually proofread my additions to the readme and verifed the markdown rendering on github.

**Original Pull Request:** https://github.com/microsoft/terminal/pull/9026 **State:** closed **Merged:** Yes --- ## Summary of the Pull Request - Adds two simple animated shaders to the pixel shaders sample folder - Updates the readme in the pixel shaders sample folder to add a section explaining the animated shaders - Modifies some comments in existing shader samples ## PR Checklist * [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA * [x] 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: #8994 ## Detailed Description of the Pull Request / Additional comments The two shaders I wrote are not especially pretty or interesting, but they should hopefully serve as simple examples for anyone looking to do animated effects. One simply draws a line of inverted pixels that scrolls down the screen, and the other fades the background back and forth between two colors. I've added a new section to the readme explaining how the shaders work to achieve animated effects. I've also updated the comments on the existing shaders to clear up a couple of things: 1. Be more explicit that `Time` represents seconds since the shader loaded. Though obvious in hindsight, this was not clear to me when I was first learning/experimenting 2. Explain that `tex` ranges from 0,0 to 1,1. This is important because, when trying to port GLSL shaders from shadertoy, I at first assumed `fragCoord` and `tex` are the same thing but the former actually ranges from 0,0 to the resolution of the canvas, so some of the math doesn't work out if you just substitute it with `tex`. Any and all feedback welcome. ## Validation Steps Performed I ran the shaders manually in a dev build of the Terminal. I auto-spellchecked and manually proofread my additions to the readme and verifed the markdown rendering on github.
claunia added the pull-request label 2026-01-31 09:21:39 +00:00
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Reference: starred/terminal#27384
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