flutter/flutter@8bdce07...b7cb925

2026-06-12 engine-flutter-autoroll@skia.org Roll Skia from cadbde1ec4b7 to 8c89bf2b0ee3 (5 revisions) (flutter/flutter#187926)
2026-06-12 engine-flutter-autoroll@skia.org Roll Packages from 1b56cde to b78ad83 (5 revisions) (flutter/flutter#187928)
2026-06-12 engine-flutter-autoroll@skia.org Roll Dart SDK from f3441f2067ae to f6c31f4c3a63 (17 revisions) (flutter/flutter#187924)
2026-06-12 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from 2KosSR4ONUjIB7tP_... to A3eaUn9mQ_EkSNxVI... (flutter/flutter#187923)
2026-06-12 engine-flutter-autoroll@skia.org Roll Skia from a2228b926c68 to cadbde1ec4b7 (9 revisions) (flutter/flutter#187921)
2026-06-12 kustermann@google.com Remove dynamic module loading code in flutter web engine (flutter/flutter#187777)
2026-06-12 matt.kosarek@canonical.com Remove EnableTransparentWindowBackground because it did nothing important and because Windows 10 does not support DWMWA_SYSTEMBACKDROP_TYPE (flutter/flutter#187848)
2026-06-12 engine-flutter-autoroll@skia.org Roll Fuchsia Test Scripts from dQ4PjIJB5kZFU8Y32... to EmfiOMUge_nnNS33B... (flutter/flutter#187912)
2026-06-12 mvincentong@gmail.com Clarify RichText selection docs (flutter/flutter#186844)
2026-06-12 1063596+reidbaker@users.noreply.github.com Custom KGP task and migration to AGP api for geting kgp version (flutter/flutter#182788)
2026-06-12 engine-flutter-autoroll@skia.org Roll Skia from f61acb31edf8 to a2228b926c68 (5 revisions) (flutter/flutter#187896)
2026-06-12 bdero@google.com [Flutter GPU] Expose ASTC HDR texture formats (flutter/flutter#187715)
2026-06-12 awolff@google.com Expand coverage of android_hardware_smoke_test. Add image, text, blend mode, and blur tests. (flutter/flutter#187600)
2026-06-11 bdero@google.com [Flutter GPU] Add blit operations (flutter/flutter#187289)
2026-06-11 bkonyi@google.com [flutter_tools] Fix version cache git fallback performance regression (flutter/flutter#187400)
2026-06-11 nshahan@google.com Rewrite `-d web-server` hot reload/restart tests (flutter/flutter#187453)
2026-06-11 bdero@google.com [Impeller] Allow sampling textures with manually-uploaded mip levels (flutter/flutter#187729)
2026-06-11 154381524+flutteractionsbot@users.noreply.github.com Sync CHANGELOG.md from stable (flutter/flutter#187884)
2026-06-11 47866232+chunhtai@users.noreply.github.com iOS a11y sets header trait based on heading level (flutter/flutter#186916)
2026-06-11 engine-flutter-autoroll@skia.org Roll Skia from 9f02102df298 to f61acb31edf8 (19 revisions) (flutter/flutter#187869)
2026-06-11 engine-flutter-autoroll@skia.org Roll ICU from ee5f27adc28b to d578f2e8b7bd (8 revisions) (flutter/flutter#187829)

If this roll has caused a breakage, revert this CL and stop the roller
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Please CC louisehsu@google.com,stuartmorgan@google.com on the revert to ensure that a human
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Adds explicit Flutter GPU texture copy commands on `CommandBuffer`:

- `copyBufferToTexture`
- `copyTextureToBuffer`
- `copyTextureToTexture`

This makes texture uploads and copies part of command-buffer recording,
so renderers can order transfer work with render passes and batch
adjacent copy commands internally. `Texture.overwrite` is now deprecated
and implemented through a staging `DeviceBuffer` plus
`CommandBuffer.copyBufferToTexture`.

This also fixes the GLES texture-to-texture blit encoder to pass right
and bottom coordinates to `glBlitFramebuffer`, instead of width and
height. The new Flutter GPU copy tests cover this case.

## Examples

Upload pixels from a staging buffer into a texture:

```dart
final gpu.CommandBuffer commandBuffer = gpu.gpuContext.createCommandBuffer();
commandBuffer.copyBufferToTexture(
  gpu.BufferView(stagingBuffer, offsetInBytes: 0, lengthInBytes: byteLength),
  gpu.TextureRegion(texture, width: width, height: height),
);
commandBuffer.submit();
```

Read pixels from a texture into a buffer:

```dart
final gpu.CommandBuffer commandBuffer = gpu.gpuContext.createCommandBuffer();
commandBuffer.copyTextureToBuffer(
  gpu.TextureRegion(texture, width: width, height: height),
  gpu.BufferView(readbackBuffer, offsetInBytes: 0, lengthInBytes: byteLength),
);
commandBuffer.submit();
```

Copy a region between two textures:

```dart
final gpu.CommandBuffer commandBuffer = gpu.gpuContext.createCommandBuffer();
commandBuffer.copyTextureToTexture(
  gpu.TextureRegion(sourceTexture, width: width, height: height),
  gpu.TextureDestinationRegion(destinationTexture, x: destinationX, y: destinationY),
);
commandBuffer.submit();
```

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [AI contribution guidelines] and understand my
responsibilities, or I am not using AI tools.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[AI contribution guidelines]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#ai-contribution-guidelines
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md