We were incorrectly calling this with a thread handle, additionally
changing the process priority here doesn't make sense, so just drop
this.
Release Notes:
- N/A or Added/Fixed/Improved ...
---------
Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>
## Problem
A Sentry-reported crash on Windows (Intel Iris Xe Graphics, v1.0.1):
```
index out of bounds: the len is 1 but the index is 1
```
panicking at `DirectXAtlasState::texture` in
[`crates/gpui_windows/src/directx_atlas.rs`](https://github.com/zed-industries/zed/blob/main/crates/gpui_windows/src/directx_atlas.rs):
```rust
AtlasTextureKind::Subpixel => {
&self.subpixel_textures[id.index as usize].as_ref().unwrap()
}
```
## Root cause
After a GPU device-lost recovery, GPUI's view cache replays stale
`AtlasTile`
references from the previous frame's `paint_operations` via
`Scene::replay`.
1. **Atlas grows past one texture.** A long enough session pushes
`subpixel_textures.textures.len() ≥ 2` (easy on Iris Xe at the default
1024×1024 atlas size). Top-level views in Zed use `cached(...)`, so
their
`AnyViewState.paint_range` records into
`rendered_frame.scene.paint_operations`,
referencing both index `0` and index `1`.
2. **Device lost.** `handle_device_lost` clears every `AtlasTextureList`
(`textures.len() == 0`)
and `tiles_by_key`, then sets `skip_draws = true`.
3. **`WM_GPUI_FORCE_UPDATE_WINDOW` arrives.** `mark_drawable()` flips
`skip_draws` back to `false` and `request_frame` runs with
`force_render: true`.
4. **The cache hit.** Inside `Window::draw`, `AnyView::prepaint`'s cache
check (`!dirty_views.contains(...) && !window.refreshing`) succeeds for
every cached view because the recovery doesn't touch invalidator state
and
`force_render` doesn't propagate into `Window`. `AnyView::paint` calls
`window.reuse_paint` → `Scene::replay` → `primitive.clone()`, which
(since
`SubpixelSprite`/`AtlasTile` are `Copy`) verbatim copies a
`Primitive::SubpixelSprite { tile: { texture_id: { index: 1, ... }, ...
} }`
into `next_frame.scene`.
5. **Atlas regrows to one.** Dirty/uncached parts of the same frame
(caret, animations, anything that called `cx.notify`) fall through to
`paint_glyph` → `get_or_insert_with` → `push_texture`, growing
`subpixel_textures.textures` from `0` to **`1`** with index `0` valid.
6. **Panic.** After `mem::swap`, `rendered_frame.scene` contains a mix
of
fresh `index = 0` and replayed `index = 1` sprites. `Scene::batches`
emits separate batches per `texture_id`; the `index = 1` batch reaches
`atlas.get_texture_view` → `subpixel_textures[1]` → panic with
`len = 1, index = 1`.
The two earlier related fixes do not catch this:
- **#52389 / dbd95ea7** (`if force_render { mark_drawable }`) protects
the
200 ms recovery sleep — pending `WM_PAINT`s carry `force_render = false`
and so do not clear `skip_draws`. But `WM_GPUI_FORCE_UPDATE_WINDOW`
carries `force_render = true`, so `mark_drawable` runs, then
`Window::draw`'s `reuse_paint` still reproduces stale tiles.
- The unmerged Windows draft `2e5d890e37`
(`force_render_after_recovery`)
similarly only forces the forced-render branch — it doesn't bypass the
view cache.
## Fix
Two parts:
**1. Bypass the view cache on a forced draw (cross-platform).**
In the platform-agnostic `request_frame` closure in `Window::new`, call
`window.refresh()` whenever `RequestFrameOptions::force_render` is
`true`.
`Window::refresh` is the documented escape hatch for cached views (per
the
`AnyView::cached` docs: *"The one exception is when [Window::refresh] is
called, in which case caching is ignored."*). With `refreshing = true`
every `AnyView::prepaint` cache check fails, every cached view fully
repaints, and `paint_glyph` allocates fresh tiles for every glyph, so
`rendered_frame.scene` ends up free of stale `AtlasTile`s.
**2. Add the `force_render_after_recovery` flag on Windows.**
Mirror the Linux fix from #52389: a per-window `Cell<bool>` set after
`WindowsWindowInner::handle_device_lost` succeeds and consumed at the
top
of `draw_window`. Together with the GPUI change above, the first frame
after recovery (whether a stray `WM_PAINT` during the 200 ms recovery
sleep or the explicit `WM_GPUI_FORCE_UPDATE_WINDOW`) is treated as a
forced render that both clears `skip_draws` and bypasses the view cache.
## Testing
- `script/clippy -p gpui` is clean.
- I do not have a Windows toolchain available locally, so I have not
cross-compiled `gpui_windows`. Reviewers with Windows access — please
smoke-test on a machine where the device-lost path can be exercised
(Intel iGPU, suspend/resume, or running a TDR-inducing test on a GPU
driver).
## Related
- Sentry issue ID 7457971403 (DirectX subpixel atlas crash, Intel Iris
Xe).
- Builds on / fixes the residual gap in #52389 (`gpui_linux: Force scene
rebuild after GPU device recovery"). The GPUI change here also hardens
the corresponding Linux path against the same `reuse_paint` mechanism.
Release Notes:
- Fixed a crash on Windows when the GPU device is lost and recovered
during use (typically driver crash, suspend/resume, or display
reconfiguration, most commonly on Intel iGPUs)
Fixes ZED-5K1
Release Notes:
- Fixed a panic on windows when a monitor disappears from windows
monitor enumeration
---------
Co-authored-by: John Tur <john-tur@outlook.com>
Instead of manually handing hiding the cursor on keyboard input at the
editor level, GPUI will now take care of it.
This makes it significantly easier to handle the edge cases, and allows
delegating the cursor restoration to the platform itself in the macOS
case. On Linux and Windows, we still have to restore the cursor on
movement ourselves, but this now happens at the platform-specific level.
Bugs fixed by this change:
- No cursor when "Unsaved edits" prompt appears
- Cursor disappears when clicking a panel button if it contains a search
bar (e.g. collab panel)
### Setting rename
The `hide_mouse` setting value `"on_typing_and_movement"` has been
renamed to `"on_typing_and_action"` to better reflect what it actually
does — it hides the cursor when a keystroke resolves to an action (e.g.
cursor movement, deletion). Existing settings are migrated
automatically.
### Tested platforms
- [x] macOS
- [x] Wayland
- [x] X11
- [x] Windows
- [x] Web
Self-Review Checklist:
- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [ ] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable
Release Notes:
- Renamed the `hide_mouse` setting value `on_typing_and_movement` to
`on_typing_and_action` to better describe its behavior (existing
settings are auto-migrated)
- Fixed a few situations where the mouse cursor would be incorrectly
hidden
AWS-LC registers an `atexit` handler that intentionally acquires a lock
without releasing it. AWS-LC also has `thread_local` objects which
acquire this lock in their destructor. Destructors for `thread_local`s
run under the loader lock. So, there is a race condition where, if a
thread exits after `atexit` handlers have run, the TLS destructors will
block indefinitely on this lock while holding the loader lock. Since
`ExitProcess` also requires the loader lock, process teardown will
deadlock.
Closes#54856
Release Notes:
- Fixed an issue where the Zed process wouldn't exit after closing all
windows
## Context
Fixes a bug on Windows where the Alt modifier key becomes stuck in the
pressed state after using Alt-Tab to switch away from and back to the
Zed application.
### Root Cause
In `crates/gpui_windows/src/events.rs`, when the window loses focus
during Alt-Tab, the WM_KEYUP event for the Alt key is never delivered to
the application. The pending modifier state in GPUI remains as
`alt=true`. When the window regains focus, there is no synchronization
point to reset this stale state.
## How to Review
In `handle_activate_msg()` (WM_ACTIVATE handler), when the window is
activated:
1. Reset the cached modifier tracking state (`last_reported_modifiers`
and `last_reported_capslock` set to `None`)
2. Query the actual current modifier state from Windows using
`GetKeyState()` APIs
3. Dispatch a `ModifiersChanged` event with the true state to
synchronize GPUI
## Self-Review Checklist
<!-- Check before requesting review: -->
- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [ ] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable
I think it's difficult to add tests for this because it's
platform-dependent, but I recorded a video for comparison — sorry I only
have an anime‑style app to show the key presses.
<details>
<summary>Video</summary>
https://github.com/user-attachments/assets/b545178c-b360-4e2b-8d60-d6f95a0b4b79https://github.com/user-attachments/assets/bc4d41eb-6f42-4040-a588-0fc46c576db7
</details>
Closes#45485
Release Notes:
- Fixed Alt modifier key stuck after Alt-Tab on Windows. Modifier state
is now synchronized when the window regains focus, ensuring correct key
interpretation after window switching.
Self-Review Checklist:
- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable
Release Notes:
- N/A
Relates to #5303 and
https://github.com/zed-industries/zed/issues/40826#issuecomment-3684556858
although I haven't found anywhere an actual request for `gpui` itself to
support a system alert sound.
### What
Basically, this PR adds a function that triggers an OS-dependent alert
sound, commonly used by terminal applications for `\a` / `BEL`, and GUI
applications to indicate an action failed in some small way (e.g. no
search results found, unable to move cursor, button disabled).
Also updated the `input` example, which now plays the bell if the user
presses <kbd>backspace</kbd> with nothing behind the cursor to delete,
or <kbd>delete</kbd> with nothing in front of the cursor.
Test with `cargo run --example input --features gpui_platform/font-kit`.
### Why
If this is merged, I plan to take a second step:
- Add a new Zed setting (probably something like
`terminal.audible_bell`)
- If enabled, `printf '\a'`, `tput bel` etc. would call this new API to
play an audible sound
This isn't the super-shiny dream of #5303 but it would allow users to
more easily configure tasks to notify when done. Plus, any TUI/CLI apps
that expect this functionality will work. Also, I think many terminal
users expect something like this (WezTerm, iTerm, etc. almost all
support this).
### Notes
~I was only able to test on macOS and Windows, so if there are any Linux
users who could verify this works for X11 / Wayland that would be a huge
help! If not I can try~
Confirmed Wayland + X11 both working when I ran the example on a NixOS
desktop
Release Notes:
- N/A
Linear gradients in dark color ranges (5-15% lightness) show visible
banding due to 8-bit quantization — only ~7 distinct values exist in
that range, producing hard steps instead of smooth transitions. This
affects every dark theme in Zed.
## What this does
Adds triangular-distributed dithering after gradient interpolation in
both the Metal and HLSL fragment shaders. The noise breaks up
quantization steps at the sub-pixel level, producing perceptually smooth
gradients.
## How it works
Two hash-based pseudo-random values (seeded from fragment position x
golden ratio) are summed to produce a triangular probability
distribution. This is added to the RGB channels at +/-1/255 amplitude.
- **Triangular PDF** — mean-zero, so no brightness shift across the
gradient
- **+/-1/255 amplitude** — below perceptual threshold, invisible on
bright gradients where 8-bit precision is already sufficient
- **Deterministic per-pixel** — seeded from position, no temporal
flickering
- **Zero-cost** — a couple of `fract`/`sin` per fragment, negligible vs.
the existing gradient math
### Channel-specific amplitudes
| Channel | Amplitude | Rationale |
|---------|-----------|----------------------------------------------------------------------------------------------------|
| RGB | ±2/255 | Breaks dark-on-dark banding where adjacent 8-bit values
are perceptually close |
| Alpha | ±3/255 | Alpha gradients over dark backgrounds need stronger
noise — α × dark color = tiny composited steps |
The higher alpha amplitude is necessary because when a semi-transparent
gradient (e.g., 0.4 → 0.0 alpha) composites over a dark background, the
effective visible difference per quantization step is smaller than the
RGB case. ±3/255 is still well below the perceptual threshold on
bright/opaque elements.
## Scope
Two files changed, purely additive:
| File | Change |
|------|--------|
| `crates/gpui_macos/src/shaders.metal` | 13 lines after `mix()` in
`fill_color()` |
| `crates/gpui_windows/src/shaders.hlsl` | 13 lines after `lerp()` in
`gradient_color()` |
No changes to Rust code, no API changes, no new dependencies.
## Screenshots
<img width="1886" height="1003" alt="gradient_dithering_before"
src="https://github.com/user-attachments/assets/f75ae93b-b142-4d0e-9b61-e08f30fe1758"
/>
_Before_
<img width="1902" height="1052" alt="gradient_dithering_after"
src="https://github.com/user-attachments/assets/7aee9a36-f578-4e08-a846-44d092bcf043"
/>
_After_
## Test plan
This is a shader-level fix; no Rust test harness exists for visual
output. Manual testing is appropriate here. Visual regression tests
cover UI layout, not sub-pixel rendering quality.
**Manual (macOS):**
- [x] Dark gradients (5-13% lightness range) — banding eliminated
- [x] Bright gradients — no visible difference (dither amplitude below
precision threshold)
- [x] Oklab and sRGB color spaces — both paths dithered
- [x] Solid colours, pattern fills, checkerboard — unaffected (dither
only applies to LinearGradient case)
- [x] Alpha gradients (semi-transparent over dark bg) — banding
eliminated with alpha dithering
- [x] Path gradients (paint_path) — same fill_colour() function,
dithering applies
**Windows:** HLSL change is identical logic with HLSL built-ins
(`frac`/`lerp` vs `fract`/`mix`) — not tested locally.
Release Notes:
- Improved linear gradient rendering by adding dithering to eliminate
visible banding in dark color ranges
Liam
Closes#51312
- Remove platform-specific #[cfg] gates from PinchEvent, event
listeners, and dispatch logic in GPUI
- Windows: Intercept Ctrl+ScrollWheel (emitted by precision trackpads
for pinch gestures) and convert them to GPUI PinchEvents
- Image Viewer: remove redundant platform-specific blocks
- X11: Bump XInput version to 2.4 and implement handlers for
XinputGesturePinch events
- [x] Added a solid test coverage and/or screenshots from doing manual
testing
- [x] Done a self-review taking into account security and performance
aspects
- [x] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
Release Notes:
- Pinching gestures now available on all devices.
---------
Co-authored-by: John Tur <john-tur@outlook.com>
Previously, the GPUI profiler allocates one CircularBuffer per thread,
and `CircularBuffer<N>` always preallocates space for N entries. As a
result it allocates ~20MB/thread, and on my machine about 33 threads are
created at startup for a total of 600MB used.
In this PR I change it to use a VecDeque that can gradually grow up to
20MB as data is written. At least in my experiments it seems that this
caps overall usage at about 21MB perhaps because only one thread writes
very much usage data.
Since this is fixed overhead for everyone running Zed it seems like a
worthwhile gain.
This also folds duplicated code across platforms into the common gpui
profiler.
Before:
<img width="4804" height="2192" alt="Image"
src="https://github.com/user-attachments/assets/7060ee5b-ef80-49cb-b7be-de33e9a2e7a5"
/>
After:
<img width="5052" height="1858" alt="image"
src="https://github.com/user-attachments/assets/513494df-0974-4604-9796-15a12ef1c134"
/>
I got here from #35780 but I don't think this is tree-size related, it
seems to be fixed overhead.
Release Notes:
- Improved: Significantly less memory used to record internal profiling
information.
---------
Co-authored-by: MrSubidubi <finn@zed.dev>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
After GPU device recovery clears the atlas, the next frame could
re-present a stale scene via the needs_present path (which skips scene
rebuilding). The stale scene references texture IDs that no longer exist
in the cleared atlas, causing an index-out-of-bounds panic.
Fix this by setting a force_render_after_recovery flag when device
recovery completes. The platform refresh loop reads this flag and passes
force_render: true in RequestFrameOptions, ensuring GPUI rebuilds the
scene before presenting.
Fixes ZED-5QT
Release Notes:
- N/A or Added/Fixed/Improved ...
MetalAtlas::remove() used tiles_by_key.get(key) to look up the texture
ID but only called tiles_by_key.remove(key) when the texture became
fully unreferenced. When a tile was removed while other tiles remained
on the same texture, the key stayed in tiles_by_key as a stale entry.
Once subsequent removals deleted the texture, get_or_insert_with could
return the stale tile referencing a now-deleted texture slot, causing an
unwrap panic in MetalAtlasState::texture().
Fix: change .get(key) to .remove(key) unconditionally, matching the WGPU
and DirectX atlas implementations which already do this correctly.
Closes ZED-5KV
Release Notes:
- N/A or Added/Fixed/Improved ...
- Simplify and improve Windows clipboard handler.
- Fixed components that weren't handling multiple formats on the
clipboard properly.
Closes https://github.com/zed-industries/zed/issues/51278
Release Notes:
- windows: Fixed an issue where text copied from Office applications
couldn't be pasted into Zed.
Fixes#42444
- Changed `accepts_text_input` on the editor to be more precise.
Previously, it returned `true` only in insert mode. Now it also returns
`true` when an operator is pending.
- On Windows, we disable the IME whenever there is no input handler
which `accepts_text_input`.
- How this improves Vim mode: in insert mode, the IME is enabled; in
normal mode, it is disabled (command keys are not intercepted); when an
operator is pending, the IME is re-enabled.
Release Notes:
- On Windows, the IME is disabled in Vim normal and visual modes.
Co-Authored-By: Eric Holk <eric@zed.dev>
In app drop we had been calling `.close()` on the executors. This caused
problems with the BackgroundExecutor on Linux because it raced with
concurrent work: If task A was running and about to poll task B, the
poll to task B would panic with "Task polled after completion". This
didn't really matter (because the app was shutting down anyway) but
inflated our panic metrics on Linux.
It turns out that the call to `.close()` is not needed. It was added to
prevent foreground tasks being scheduled after the app was dropped; but
on all platforms the App run method does not return until after the
ForegroundExecutor is stopped (so no further tasks will run anyway).
The background case is more interesting. In test code it didn't matter
(the background executor is simulated on the main thread so tests can't
leak tasks); in app code it also didn't really make a difference. When
`fn main` returns (which it does immediately after the app is dropped)
all the background threads will be cancelled anyway.
Further confounding debugging, it turns out that the App does not get
dropped on macOS and Windows due to a reference cycle; so this was only
happening on Linux where the app quit callback is dropped instead of
retained after being called. (Fix in #50985)
Release Notes:
- N/A
---------
Co-authored-by: Eric Holk <eric@zed.dev>
Fix regressions from https://github.com/zed-industries/zed/pull/49277:
- The fusion manifest was not being embedded for Zed.exe, making it
non-functional.
- The relative path used to load shaders in debug mode was incorrect.
Release Notes:
- N/A
Co-authored-by: Marshall Bowers <git@maxdeviant.com>
#2874 on steroids
Before you mark this PR as ready for review, make sure that you have:
- [ ] Added a solid test coverage and/or screenshots from doing manual
testing
- [ ] Done a self-review taking into account security and performance
aspects
- [ ] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
Release Notes:
- N/A
---------
Co-authored-by: Eric Holk <eric@zed.dev>
