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Adds Impeller availability to the impeller README.md - #190671

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jtmcdole merged 6 commits into
flutter:masterfrom
gaaclarke:impeller-availability
Aug 7, 2026
Merged

jtmcdole merged 6 commits into
flutter:masterfrom
gaaclarke:impeller-availability

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@gaaclarke

@gaaclarke gaaclarke commented Aug 6, 2026 •

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source: https://docs.google.com/spreadsheets/d/1AebMvprRkxP-D6ndx920lbvDBbhg-sNNRJ64XY2P2t0/edit?gid=0#gid=0

We are going to deprecate that sheets doc and rely on this markdown section.

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@flutter-dashboard flutter-dashboard Bot added the CICD Run CI/CD label Aug 6, 2026
@gaaclarke
gaaclarke requested review from andywolff and jtmcdole August 6, 2026 17:21

@gemini-code-assist gemini-code-assist Bot left a comment

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Code Review

This pull request updates the Impeller README documentation by adding an availability matrix across various platforms and releases, and updating the macOS, Linux, and Windows sections to reflect that Impeller is now enabled by default, including instructions on how to disable it. The review feedback points out a copy-paste artifact in the Windows code block language specifier that should be cleaned up.

Comment thread engine/src/flutter/impeller/README.md Outdated
| Releases | iOS | Android | Embedder API (Metal) | Embedder API (Vulkan) | Embedder API (OpenGL) | macOS | Windows | Linux | Web |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| **main** | ⭐ | ✅ | 🧪 | 🚧 | 🚧 | ✅ | ✅ | ✅ | 🚫 |
| **3.47** | ⭐ | ✅ | 🧪 | 🚧 | 🚧 | ✅ | ✅ | ✅ | 🚫 |

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Should Embedder API (OpenGL) be 🧪?

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That's not what it is in the doc. I have no information to suggest it's wrong. You guys are looking at the embedder stuff, probably better if you initiate the change in a followup.

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Given Windows and Linux are using Impeller OpenGL through the embedder API, I'd hope it's not experimental any more :)

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There are no more considerations for generic embedder usage?

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Potential considerations:

  1. We should add more docs to the OpenGL APIs to explain Impeller's requirements (eg, you need depth and stencil buffer attachments)
  2. Flutter Windows and Flutter Linux don't exercise all the OpenGL APIs available on the embedder API, so it's possible there are bugs, or feature gaps. We might want to do a pass on the engine's tests.

Regardless, I'd say we've entered the preview phase by shipping stuff to production.

@gaaclarke gaaclarke added the autosubmit Merge PR when tree becomes green via auto submit App label Aug 6, 2026
@auto-submit auto-submit Bot removed the autosubmit Merge PR when tree becomes green via auto submit App label Aug 6, 2026
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auto-submit Bot commented Aug 6, 2026

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autosubmit label was removed for flutter/flutter/190671, because - The status or check suite Dashboard Checks has failed. Please fix the issues identified (or deflake) before re-applying this label.

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