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## Screenshot testing Adds visual testing infrastructure for GPUI that captures screenshots by rendering directly to Metal textures. The The screenshots end up in `target/visual_tests/` and look like this: <img width="2560" height="1600" alt="workspace_with_editor2" src="https://github.com/user-attachments/assets/54112343-4af1-4347-9bab-f099de97dd29" /> <img width="2560" height="1600" alt="project_panel2" src="https://github.com/user-attachments/assets/0cd54b61-dace-4398-a28e-0b4d7c2968f6" /> ### Key Features - **Direct texture capture**: Screenshots are captured by rendering the scene to a Metal texture and reading pixels directly from GPU memory, rather than using ScreenCaptureKit - **No visibility requirements**: Windows don't need to be visible on screen since we read directly from the render pipeline - **Deterministic output**: Captures exactly what GPUI renders, not what the OS compositor displays - **No permissions needed**: Doesn't require Screen Recording permission like ScreenCaptureKit would ### Running the Visual Tests ```bash # Run visual tests (compares against baselines) cargo run -p zed --bin visual_test_runner --features visual-tests # Update baseline images (when UI intentionally changes) UPDATE_BASELINE=1 cargo run -p zed --bin visual_test_runner --features visual-tests # View the captured screenshots open target/visual_tests/ ``` ### Implementation - `Window::render_to_image()` - Renders the current scene to a texture and returns an `RgbaImage` - `MetalRenderer::render_to_image()` - Core implementation that renders to a non-framebuffer-only texture - `VisualTestAppContext` - Test context that uses real macOS platform rendering - `VisualTestAppContext::capture_screenshot()` - Synchronous screenshot capture using direct texture rendering ### Usage ```rust let mut cx = VisualTestAppContext::new(); let window = cx.open_window(...)?; let screenshot: RgbaImage = cx.capture_screenshot(window.into())?; ``` Release Notes: - N/A --------- Co-authored-by: Amp <amp@ampcode.com>
51 lines
998 B
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51 lines
998 B
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**/cargo-target
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**/target
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**/venv
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**/.direnv
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*.wasm
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*.xcodeproj
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.DS_Store
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.blob_store
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.build
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.claude/settings.local.json
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.envrc
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.flatpak-builder
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.idea
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.netrc
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*.pyc
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.pytest_cache
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.swiftpm
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.swiftpm/config/registries.json
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.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
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.venv
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.vscode
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.wrangler
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.perf-runs
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/assets/*licenses.*
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/crates/collab/seed.json
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/crates/theme/schemas/theme.json
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/crates/zed/resources/flatpak/flatpak-cargo-sources.json
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/crates/project_panel/benches/linux_repo_snapshot.txt
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/dev.zed.Zed*.json
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/node_modules/
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/plugins/bin
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/script/node_modules
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/snap
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/zed.xcworkspace
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DerivedData/
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Packages
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xcuserdata/
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crates/docs_preprocessor/actions.json
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# Don't commit any secrets to the repo.
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.env
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.env.secret.toml
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# `nix build` output
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/result
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# Visual test baseline images (these will be stored outside
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# the repo in the future, but we don't haven't decided exactly
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# where yet, so for now they get generated into a gitignored dir.)
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/crates/zed/test_fixtures/visual_tests/
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