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camsim99 and others added 14 commits May 28, 2026 18:09
…mode (#187207)

Resets system UI visibility flags before setting edge-to-edge mode if
requested.

System UI visibility flags will be set if the developer requests a
non-edge-to-edge `SystemUiMode`, which can (and does in practice)
conflict with [laying out a window
edge-to-edge](https://developer.android.com/develop/ui/views/layout/edge-to-edge-manually#lay-out-in-full-screen).
This is why [the
docs](https://developer.android.com/reference/androidx/core/view/WindowCompat#setDecorFitsSystemWindows(android.view.Window,boolean))
warn against setting system UI visibility flags altogether; see
#133074 for details.

Fixes #186723.

## Pre-launch Checklist

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Progress on #154145.

Instanced drawing was started in Impeller long ago but remains
incomplete to today. A command could carry an instance count, Metal and
Vulkan honored it, but OpenGL ES ignored it, no backend had per-instance
vertex data, and there was zero test coverage.

This fills those gaps in a fully portable way that works _everywhere_,
including emulation on rare GLES 2 drivers that don't support the
required extensions! No capability checks required to safely use.

Super useful for Flutter GPU-based renderers, but I think some stuff in
Impeller's 2D renderer may be able benefit from this too. One of the
original early motivations we started implementing this years ago was to
reduce the vertex load for glyph atlas rendering, for example.

## Example usage

On the shader side there is nothing instancing-specific. Per-instance
values are declared as ordinary vertex `in` attributes, identical to
per-vertex ones; the shader does no indexing and never references
`gl_InstanceIndex`.

```glsl
uniform FrameInfo {
  mat4 mvp;
}
frame_info;

in vec2 vertex_position;  // supplied per vertex
in vec2 instance_offset;  // supplied per instance
in vec4 instance_color;   // supplied per instance

out vec4 v_color;

void main() {
  gl_Position = frame_info.mvp * vec4(vertex_position + instance_offset, 0.0, 1.0);
  v_color = instance_color;
}
```

On the Impeller side, instancing is driven through the existing pipeline
and render pass APIs. The only new surface is the per-binding input
rate: a binding is marked instance-rate on the `VertexDescriptor`,
geometry and per-instance data are bound as separate vertex buffers, and
the draw carries an instance count.

```cpp
// Binding 0 advances once per vertex; binding 1 advances once per instance.
auto vertex_desc = std::make_shared<VertexDescriptor>();
vertex_desc->SetStageInputs(
    /*inputs=*/{position_slot, instance_offset_slot, instance_color_slot},
    /*layouts=*/{
        ShaderStageBufferLayout{.stride = sizeof(Vector2),
                                .binding = 0,
                                .input_rate = VertexInputRate::kVertex},
        ShaderStageBufferLayout{.stride = sizeof(InstanceData),
                                .binding = 1,
                                .input_rate = VertexInputRate::kInstance},
    });
pipeline_desc->SetVertexDescriptor(std::move(vertex_desc));

// One draw call renders `instance_count` copies of the geometry.
pass.SetVertexBuffer({geometry_view, instance_data_view});
pass.SetElementCount(vertex_count);
pass.SetInstanceCount(instance_count);
pass.Draw();
```

A complete, runnable version is the new
[`CanRenderInstancedWithVertexAttributes`](https://github.com/bdero/flutter/blob/8f835895165add4f0e628d775b9d28c55ae3663a/engine/src/flutter/impeller/renderer/renderer_unittests.cc#L545-L640)
test, paired with the
[`instanced_attributes.vert`](https://github.com/bdero/flutter/blob/8f835895165add4f0e628d775b9d28c55ae3663a/engine/src/flutter/impeller/fixtures/instanced_attributes.vert)
fixture shown above.

Note that the `VertexDescriptor` is assembled by hand rather than from
`impellerc`'s reflected shader structs. Whether a binding is
per-instance is pipeline state, not something expressible in shader
source, so there is no static codegen for it: generating it would first
require deciding how to annotate which shader inputs are per-instance,
which is something we could add down the road if we find it'd be
convenient for stuff in the entities framework.

## Pre-launch Checklist

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[test-exempt].
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This results in a ~10x speedup of opengles golden tests.

issue: #187233

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
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responsibilities, or I am not using AI tools.
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we expect every widget to implement].
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above.
- [x] I updated/added relevant documentation (doc comments with `///`).
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[test-exempt].
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https://skia.googlesource.com/skia.git/+log/5493e4c144cd..fcfe5975c945

2026-05-28 kjlubick@google.com Use exclusive mutex in
SkFontMgr_android_ndk.cpp
2026-05-28 thomsmit@google.com [graphite] BufferSubAllocator respects
failed mapping on reset
2026-05-28 skia-autoroll@skia-public.iam.gserviceaccount.com Roll
vulkan-deps from a8f28255baa4 to 000daaa61385 (1 revision)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
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…, Linux, web (#160664) (#186642)

`MediaQueryData.alwaysUse24HourFormat`'s dartdoc previously documented
only Android and iOS behavior. Extended the platform-behavior list to
cover macOS, Windows, Linux, and web, mirroring what the engine reports
for each: `FlutterHourFormat.isAlwaysUse24HourFormat` on macOS,
`GetUserTimeFormat()`/`Prefer24HourTime()` on Windows,
`org.gnome.desktop.interface.clock-format` on Linux/GNOME, and a hard
`false` default in the web engine's `platform_dispatcher.dart`.

Fixes #160664.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
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responsibilities, or I am not using AI tools.
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responsibilities.
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we expect every widget to implement].
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above.
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[test-exempt].
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Fixes] where supported.
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Documentation-only change, so I am claiming the [test-exempt] policy.

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---------

Co-authored-by: Kate Lovett <katelovett@google.com>
Co-authored-by: Mohellebi Abdessalem <116356835+AbdeMohlbi@users.noreply.github.com>
Work towards dart-lang/sdk#59226

The analyzer will start reporting cases where a super parameter could be
used, and the type of the supar parameter is tightened in the subclass
constructor. This is still a perfectly valid super parameter use case.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
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we expect every widget to implement].
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[test-exempt].
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Fixes] where supported.
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…t diffing (#185197)

Fixes #13787

## Pre-launch Checklist

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Issue: fixes #23206

The `PageRouteBuilder` and `RouteTransitionsBuilder` docs pointed
readers to `ModalRoute.buildTransitions`, but the callback docs
themselves did not explain the practical difference between the primary
`animation` and `secondaryAnimation` parameters.

Fix:

Clarify that `animation` drives the route's own push/pop transition,
while `secondaryAnimation` lets the route coordinate with a route pushed
above it. The docs now also mention that `secondaryAnimation` only runs
when the adjacent routes allow transition coordination through
`canTransitionTo`/`canTransitionFrom`.

Tests:

- `./bin/dart format --output=none --set-exit-if-changed
packages/flutter/lib/src/widgets/routes.dart
packages/flutter/lib/src/widgets/pages.dart`
- `./bin/flutter analyze packages/flutter/lib/src/widgets/routes.dart
packages/flutter/lib/src/widgets/pages.dart`
- `git diff --check`

Risk:

Docs-only change in two route API comments. No runtime behavior changes.
https://dart.googlesource.com/sdk.git/+log/082191101fcc..683322426411

2026-05-28 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com
Version 3.13.0-148.0.dev
2026-05-28 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com
Version 3.13.0-147.0.dev

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
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Please CC codefu@google.com,dart-vm-team@google.com on the revert to
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is aware of the problem.

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Updates the uber SDF shader pipeline to support complex RSEs with
asymmetric corner radii.

This works by breaking the RSE into four quadrants, and evaluating them
separately.

Separates the rendering paths for symmetric and asymmetric RSEs so
symmetric RSEs don't need as much branching.

Also tucks the parameter unpacking into uber_sdf_contents.cc, because
the canvas code was getting bloated.

Adds unit tests and a golden.

Will need to update malioc

## Pre-launch Checklist

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https://skia.googlesource.com/skia.git/+log/fcfe5975c945..f93ed13d77fb

2026-05-28 thomsmit@google.com Reconstruct subRun bounds from glyphs
2026-05-28
recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com
Roll recipe dependencies (trivial).
2026-05-28 ashwinpv@google.com Add core_skills.json for skia
2026-05-28 jmbetancourt@google.com Migrate SKGPU_LOG calls to SKIA_LOG

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC codefu@google.com,fmalita@google.com,kjlubick@google.com on
the revert to ensure that a human
is aware of the problem.

To file a bug in Skia: https://bugs.chromium.org/p/skia/issues/entry
To file a bug in Flutter:
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To report a problem with the AutoRoller itself, please file a bug:
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…ch` (#186564)

Fixes #180569
Fixes #177693

- Moves `_RenderDeferredLayoutBox` from
`Element.activate`/`Element.deactivate` to
`RenderObject.attach`/`RenderObject.detach`.
- Makes `_addDeferredChild`/`_removeDeferredChild` reentrant.

Before this `OverlayPortalElement.deactivate` removes the overlay child
render object from `Overlay`. This is fine but in
`OverlayPortalElement.activate` the `OverlayPortal`'s render object has
not reattach yet so the RO mutation check fails because it couldn't find
the ancestor actively doing layout for the overlay child render object,
when it tries to re-attach.

## Pre-launch Checklist

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@pull pull Bot locked and limited conversation to collaborators May 29, 2026
@pull pull Bot added the ⤵️ pull label May 29, 2026
@pull pull Bot merged commit becfd1a into g-star1024:master May 29, 2026
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