fix: Chore create buffers and binding groups

[mateuszJS]

Summary by CodeRabbit

• New Features

  • Added new end-to-end tests for camera interactions, texture URL handling, and viewport resizing.
  • Enhanced integration test utilities for precise asset manipulation, including move, rotate, and resize helpers.

• Improvements

  • Optimized texture handling to detect and reuse visually identical images, reducing redundant uploads and GPU usage.
  • Refined WebGPU rendering logic for more efficient matrix management and smoother alpha blending.
  • Improved pointer and mouse interaction logic, with clearer mode handling and groundwork for future touch support.

• Bug Fixes

  • Increased robustness in canvas size observation and coordinate calculations.

• Dependency Updates

  • Updated the zigar-loader development dependency to version ^0.14.1.

• Chores

  • Adjusted build configuration for .zig files to address known build issues.
  • Removed obsolete loader implementation.

• Refactor

  • Streamlined test scripts to use new utility functions, improving clarity and maintainability.
  • Updated function signatures and interfaces for asset and texture management to support new features.

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between dc53c07 and ff6679a.

⛔ Files ignored due to path filters (22)

• integration-tests/image-sample.jpg is excluded by !**/*.jpg
• integration-tests/tests/asset-basic-transform.spec.ts-snapshots/move-image-chromium.png is excluded by !**/*.png
• integration-tests/tests/asset-basic-transform.spec.ts-snapshots/reflect-x-via-top-scale-ui-chromium.png is excluded by !**/*.png
• integration-tests/tests/asset-basic-transform.spec.ts-snapshots/rotate-after-reflect-x-chromium.png is excluded by !**/*.png
• integration-tests/tests/asset-basic-transform.spec.ts-snapshots/rotate-image-chromium.png is excluded by !**/*.png
• integration-tests/tests/asset-basic-transform.spec.ts-snapshots/select-image-chromium.png is excluded by !**/*.png
• integration-tests/tests/asset-basic-transform.spec.ts-snapshots/use-top-right-scale-ui-chromium.png is excluded by !**/*.png
• integration-tests/tests/asset-basic-transform.spec.ts-snapshots/use-top-scale-ui-chromium.png is excluded by !**/*.png
• integration-tests/tests/camera.spec.ts-snapshots/move-asset-after-pan-chromium.png is excluded by !**/*.png
• integration-tests/tests/camera.spec.ts-snapshots/move-asset-after-zoom-in-chromium.png is excluded by !**/*.png
• integration-tests/tests/camera.spec.ts-snapshots/move-with-space-chromium.png is excluded by !**/*.png
• integration-tests/tests/camera.spec.ts-snapshots/move-with-wheel-chromium.png is excluded by !**/*.png
• integration-tests/tests/camera.spec.ts-snapshots/panning-after-zoom-chromium.png is excluded by !**/*.png
• integration-tests/tests/camera.spec.ts-snapshots/zoom-after-panning-after-zoom-chromium.png is excluded by !**/*.png
• integration-tests/tests/camera.spec.ts-snapshots/zoom-in-alt-chromium.png is excluded by !**/*.png
• integration-tests/tests/camera.spec.ts-snapshots/zoom-out-with-ctrl-chromium.png is excluded by !**/*.png
• integration-tests/tests/resize.spec.ts-snapshots/after-resize-chromium.png is excluded by !**/*.png
• integration-tests/tests/ui-hover.spec.ts-snapshots/hover-image-chromium.png is excluded by !**/*.png
• integration-tests/tests/ui-hover.spec.ts-snapshots/hover-rotation-ui-chromium.png is excluded by !**/*.png
• integration-tests/tests/ui-hover.spec.ts-snapshots/hover-top-left-scale-ui-chromium.png is excluded by !**/*.png
• integration-tests/tests/ui-hover.spec.ts-snapshots/hover-top-middle-scale-ui-chromium.png is excluded by !**/*.png
• package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (25)

• .github/workflows/pr-name.yml (0 hunks)
• integration-tests/index.ts (5 hunks)
• integration-tests/init.ts (4 hunks)
• integration-tests/tests/asset-basic-transform.spec.ts (1 hunks)
• integration-tests/tests/assets-snapshot.spec.ts (1 hunks)
• integration-tests/tests/camera.spec.ts (1 hunks)
• integration-tests/tests/resize.spec.ts (1 hunks)
• integration-tests/tests/texture-urls.spec.ts (1 hunks)
• integration-tests/tests/ui-hover.spec.ts (1 hunks)
• package.json (1 hunks)
• src/WebGPU/canvasSizeObserver.ts (1 hunks)
• src/WebGPU/pointer.ts (4 hunks)
• src/WebGPU/programs/drawMSDF/getProgram.ts (3 hunks)
• src/WebGPU/programs/drawTexture/getProgram.ts (2 hunks)
• src/WebGPU/programs/drawTriangle/getProgram.ts (3 hunks)
• src/WebGPU/programs/drawTriangle/shader.wgsl (1 hunks)
• src/WebGPU/programs/initPrograms.ts (1 hunks)
• src/WebGPU/programs/pickTexture/getProgram.ts (3 hunks)
• src/WebGPU/programs/pickTriangle/getProgram.ts (3 hunks)
• src/index.ts (3 hunks)
• src/logic/index.zig (6 hunks)
• src/run.ts (4 hunks)
• src/textures.ts (2 hunks)
• webpack.config.js (1 hunks)
• zigar-loader.cjs (0 hunks)

💤 Files with no reviewable changes (2)

• .github/workflows/pr-name.yml
• zigar-loader.cjs

🧰 Additional context used

🧬 Code Graph Analysis (6)

webpack.config.js (1)

zigar-loader.cjs (3)

• loader (21-70)
• loadWASM (79-91)
• fetchWASM (72-77)

integration-tests/index.ts (2)

src/index.ts (2)

• SerializedOutputAsset (29-34)
• initCreator (43-202)

src/WebGPU/pointer.ts (1)

• camera (20-24)

src/WebGPU/programs/drawTriangle/getProgram.ts (3)

src/WebGPU/programs/drawMSDF/getProgram.ts (1)

• getProgram (6-108)

src/WebGPU/programs/pickTriangle/getProgram.ts (1)

• getProgram (5-81)

src/WebGPU/programs/drawTexture/getProgram.ts (1)

• getProgram (5-102)

src/textures.ts (2)

src/models/Video/MiniatureVideo.ts (2)

• width (106-114)
• height (116-124)

src/WebGPU/getTexture/index.ts (4)

• createTextureFromSource (106-117)
• copySourceToTexture (119-132)
• TextureSlice (22-25)
• Options (4-8)

integration-tests/tests/texture-urls.spec.ts (2)

webpack.config.js (1)

• __dirname (7-7)

src/textures.ts (1)

• init (10-19)

src/WebGPU/pointer.ts (2)

src/utils/clamp.ts (1)

• clamp (1-3)

src/consts.ts (1)

• Window (2-5)

🔇 Additional comments (50)

package.json (1)

57-57: LGTM! Standard dependency update aligns with refactoring.

The minor version bump from ^0.14.0 to ^0.14.1 is appropriate and aligns with the removal of the local zigar-loader.cjs implementation in favor of using the published package directly.

webpack.config.js (2)

58-58: LGTM! Simplified loader configuration.

Switching from the local zigar-loader.cjs implementation to the published package reduces maintenance overhead and aligns with the dependency update in package.json.

---

61-63: Monitor chung-leong/zigar#666 for ReleaseFast fix

• Issue #666 (“After updating MacOS to Sequoia the build gets stuck for ReleaseFast”) is open and was last updated on 2025-07-24.
• Current workaround (optimize: 'ReleaseSmall') applies to all builds, meaning dev builds no longer use Debug, which may hinder debugging.
• Action: track the upstream issue and, once ReleaseFast hanging is resolved, revert to:

  optimize: isProd ? 'ReleaseFast' : 'Debug'

integration-tests/tests/assets-snapshot.spec.ts (1)

15-16: LGTM: Coordinate updates align with refactored transformation utilities.

The systematic coordinate changes in the asset snapshot data correctly reflect the updated coordinate transformation logic. The new rectangular bounds (345-555, 210-490) maintain proper geometry while the test's mouse interaction coordinates (550, 275) remain valid within these bounds.

Also applies to: 21-22, 27-28, 33-34

integration-tests/tests/resize.spec.ts (1)

6-17: LGTM: Clean test implementation following established patterns.

The resize test correctly:

• Follows the standard integration test structure
• Uses the refactored utility functions appropriately
• Implements proper viewport resizing logic
• Uses screenshot comparison for visual validation

The test should effectively validate that canvas rendering adapts properly to viewport changes.

src/WebGPU/canvasSizeObserver.ts (1)

22-23: LGTM: Improved robustness with optional chaining.

The addition of optional chaining (?.) and nullish coalescing (??) properly handles cases where devicePixelContentBoxSize is undefined (e.g., in Safari). This prevents runtime errors while maintaining the correct fallback logic to contentBoxSize calculations.

Also applies to: 25-26

integration-tests/index.ts (5)

2-2: LGTM: Required import for coordinate transformations.

The camera import is necessary for the coordinate transformation logic in the new setAssetSnapshot function.

---

22-33: LGTM: Proper coordinate space transformation implementation.

The setAssetSnapshot function correctly transforms asset coordinates by:

• Calculating appropriate scale factor from canvas dimensions and camera zoom
• Applying scaling and translation based on camera position
• Preserving all asset properties while transforming only the coordinate values

This centralizes the coordinate transformation logic and ensures consistent handling across the application.

---

35-35: LGTM: Improved texture URL handling with numbering.

The texture numbering system provides a clean way to track and identify textures. The callback structure allows for flexible URL transformation, and the commented code suggests future extensibility for domain-specific URL handling.

Also applies to: 38-44

---

69-70: LGTM: Cleaner file handling with explicit URL creation.

Moving URL creation to happen before passing to creator methods improves code clarity and organization. The explicit URL variable assignment makes the data flow more transparent.

Also applies to: 82-86

---

46-46: LGTM: Consistent coordinate transformation in history management.

Using setAssetSnapshot instead of direct assignment ensures that coordinate transformations are consistently applied across all asset state changes, including undo/redo operations. This maintains coordinate space consistency throughout the application.

Also applies to: 119-119, 126-126

src/WebGPU/programs/pickTriangle/getProgram.ts (3)

5-5: LGTM: Externalized buffer parameter aligns with refactoring goals.

The addition of the matrixBuffer parameter supports the centralized uniform buffer management pattern, allowing external control over buffer lifecycle and updates.

---

53-54: LGTM: Efficient bind group caching implementation.

The cached bind group pattern effectively reduces GPU object creation overhead by:

• Lazily creating the bind group only when first needed
• Reusing the same bind group across multiple calls
• Properly integrating with the external matrix buffer

This optimization aligns well with the performance goals of the refactoring.

Also applies to: 69-74, 78-78

---

56-80: LGTM: Clean separation of concerns in render function.

The render function now focuses solely on its core responsibility (drawing triangles) while delegating buffer management to external code. This separation improves maintainability and reduces per-call overhead by eliminating redundant buffer operations.

integration-tests/tests/asset-basic-transform.spec.ts (3)

4-4: Good refactor to use utility functions.

The addition of TransformHandle import aligns well with the refactored test approach using utility functions instead of manual mouse events.

---

10-10: Asset reference storage improves test reliability.

Storing the asset reference from uploadAsset() allows the utility functions to access precise transformation handles, making tests more robust than hardcoded coordinates.

---

14-35: Excellent abstraction of transformation operations.

The refactored test methods (selectAsset, moveAsset, rotateAsset, resizeAsset) provide clear, readable test steps that abstract away complex mouse interaction sequences. This improves maintainability and reduces test brittleness.

integration-tests/tests/ui-hover.spec.ts (4)

4-4: Consistent import pattern for test utilities.

The TransformHandle import follows the same pattern as the other test file, maintaining consistency across the test suite.

---

14-16: Dynamic coordinate retrieval improves test reliability.

Using getMoveHandle(asset) and pointerMove() instead of hardcoded coordinates ensures the test adapts to actual UI element positions, making it more robust against layout changes.

---

18-18: Simplified canvas interaction.

Replacing manual mouse down/up sequences with canvas.click() is cleaner and more semantic for triggering selection.

---

21-33: Excellent use of utility functions for precise targeting.

The pattern of using getRotationHandle() and getTransformHandle() with specific handle indices ensures tests interact with the correct UI elements, improving test reliability and maintainability.

src/WebGPU/programs/drawTriangle/shader.wgsl (1)

100-107: Excellent shader optimization with improved anti-aliasing.

The refactored fragment shader eliminates conditional branching and implements proper anti-aliasing using fwidth() for edge-aware smoothing. The unified alpha computation using mix() and step() creates smooth transitions while maintaining performance.

The logic correctly:

• Calculates circle distance-based alpha with screen-space derivative awareness
• Uses step(threshold, dist) to determine blending behavior
• Applies the computed alpha to the final color output

src/WebGPU/programs/drawMSDF/getProgram.ts (2)

6-10: Good refactor to accept external matrix buffer.

The updated function signature accepting matrixBuffer: GPUBuffer aligns with the centralized uniform buffer management pattern used across other WebGPU programs in the codebase.

---

72-101: Excellent bind group caching implementation.

The WeakMap-based caching mechanism prevents redundant bind group creation per texture while ensuring proper memory management. The bind group creation correctly references the external matrixBuffer, eliminating per-draw uniform buffer updates.

This optimization should significantly improve rendering performance by reducing GPU state changes.

src/WebGPU/programs/drawTriangle/getProgram.ts (3)

6-10: Consistent refactor pattern for uniform buffer management.

The updated function signature accepting matrixBuffer: GPUBuffer maintains consistency with other WebGPU programs (drawMSDF, drawTexture, pickTriangle) in centralizing uniform buffer management.

---

60-64: Appropriate caching strategy for triangle rendering.

Creating a single cached bind group is the correct approach for triangle rendering since no textures are involved. This differs appropriately from the WeakMap approach used in texture-based programs like drawMSDF.

---

66-83: Simplified draw function improves performance.

The refactored drawTriangle function eliminates per-call uniform buffer updates and bind group creation by using the cached bind group. This should significantly reduce GPU state changes and improve rendering performance.

src/WebGPU/programs/pickTexture/getProgram.ts (2)

54-55: Good performance optimization with WeakMap caching.

Using WeakMap for caching bind groups per texture is an excellent choice as it allows automatic garbage collection when textures are no longer referenced.

---

70-82: Verified shader bindings match bind group entries.

The WGSL shader declares:

• @group(0) @binding(0) var u: Uniforms;
• @group(0) @binding(1) var ourSampler: sampler;
• @group(0) @binding(2) var ourTexture: texture_2d;

These align exactly with the createBindGroup entries in src/WebGPU/programs/pickTexture/getProgram.ts (lines 70–82). No changes needed.

integration-tests/tests/camera.spec.ts (2)

6-35: Well-structured zoom test with comprehensive coverage.

Good test implementation covering both Ctrl and Alt zoom modifiers, verifying visual output at each step, and testing asset movement after zoom.

---

7-7: Good practice: Explicitly setting snapshot suffix for cross-platform consistency.

Setting testinfo.snapshotSuffix = '' ensures consistent snapshot filenames across different platforms.

Also applies to: 38-38, 62-62

src/run.ts (2)

52-53: Efficient matrix management with direct GPU buffer writes.

Good refactor - writing matrices directly to GPU buffers eliminates redundant parameter passing and improves performance.

---

70-71: Consistent implementation for pick matrix handling.

The pick matrix update follows the same pattern as the canvas matrix, maintaining consistency in the codebase.

src/WebGPU/programs/drawTexture/getProgram.ts (2)

65-66: Consistent caching implementation across GPU programs.

The WeakMap caching approach matches the implementation in pickTexture, maintaining consistency across the codebase.

---

83-95: Proper bind group caching with texture-based keys.

The bind group creation and caching logic is correct. The external matrixBuffer is properly referenced at binding 0.

src/WebGPU/pointer.ts (3)

11-17: Clear naming improvement from CameraMode to MouseMode.

The rename better reflects the actual purpose of tracking mouse interaction modes rather than camera-specific modes.

---

141-149: Well-structured zoom function with proper bounds checking.

The zoom helper function correctly:

• Clamps zoom level between 0.1 and 20
• Maintains pointer position as zoom center
• Properly transforms camera coordinates

---

152-165: Comprehensive wheel event handling supporting multiple interaction modes.

The refactored handler properly supports:

• Zoom mode with Alt key
• Ctrl+wheel for zooming
• Default panning behavior

This aligns well with the camera interaction tests.

src/WebGPU/programs/initPrograms.ts (1)

39-48: LGTM! Clear separation of buffer responsibilities.

The program initializations correctly pass the appropriate matrix buffers - canvas-related programs receive canvasMatrixBuffer while pick-related programs receive pickCanvasMatrixBuffer. This separation of concerns improves the architecture.

src/textures.ts (2)

24-26: Good addition for texture deduplication.

Storing the hash and pixel data enables efficient duplicate detection without expensive GPU readbacks. The comment accurately explains the rationale.

---

96-108: Good choice of hash algorithm.

The djb2 hash is appropriate for duplicate detection - it's fast and has good distribution. The documentation clearly states it's non-cryptographic, which is correct for this use case.

src/index.ts (2)

43-49: Well-designed API for asynchronous texture uploads.

The uploadTexture callback parameter provides a clean interface for handling asynchronous texture uploads while keeping the texture management logic decoupled.

---

117-128: Correct integration of texture upload mechanism.

The implementation properly handles the isNew flag to avoid redundant uploads and correctly updates the texture URL after upload completion.

src/logic/index.zig (2)

49-49: Verify the need for ordered asset storage.

The change from AutoHashMap to AutoArrayHashMap maintains insertion order but has different performance characteristics. This is beneficial if asset rendering order matters.

Was this change made to preserve asset rendering order? If so, consider adding a comment explaining this requirement.

---

268-287: Clean implementation of background rendering.

The function efficiently renders the project background using two triangles. The dark gray color (0.1, 0.1, 0.1) provides good contrast for content visibility.

integration-tests/init.ts (5)

9-9: Good naming improvement for clarity.

Renaming from move to pointerMove better describes the function's purpose and avoids confusion with the new moveAsset function.

---

48-50: Correct coordinate system transformation.

The y-coordinate inversion properly handles the difference between screen coordinates (top-left origin) and canvas coordinates (bottom-left origin).

---

85-85: Proper center calculation for asset selection.

The center calculation correctly uses diagonal corners to find the asset's center point, which works for both axis-aligned and rotated assets.

---

172-187: Clean implementation of asset manipulation functions.

Both moveAsset and rotateAsset follow a consistent pattern and properly simulate user drag interactions. The functions are well-structured and easy to understand.

---

52-63: Complete and well-organized exports.

All new utility functions are properly exported, maintaining a logical grouping of related functions.

Walkthrough

This update refactors asset transformation utilities, texture handling, and WebGPU program initialization. Integration tests are restructured for precision and maintainability, including new tests for camera, resizing, and texture URLs. WebGPU programs now use external uniform buffers with bind group caching. Texture deduplication is based on pixel data, and asset map storage is optimized. The custom Zig loader is removed.

Changes

File(s)	Change Summary
.github/workflows/pr-name.yml	Workflow trigger modified to run on all PRs, not just those targeting "next" branch.
integration-tests/index.ts	Introduced setAssetSnapshot, refactored asset snapshot handling, improved texture tracking, and clarified event handlers.
integration-tests/init.ts	Refactored pointer movement, added precise transform handle logic, new asset move/rotate helpers, and updated exports.
integration-tests/tests/asset-basic-transform.spec.ts	Refactored to use new utility functions for asset transformations, removed manual mouse event code.
integration-tests/tests/assets-snapshot.spec.ts	Updated expected asset point coordinates in test snapshot data.
integration-tests/tests/camera.spec.ts	New Playwright E2E test suite for camera zoom, pan, and combined interactions.
integration-tests/tests/resize.spec.ts	New E2E test for canvas resizing and viewport screenshot validation.
integration-tests/tests/texture-urls.spec.ts	New E2E tests verifying texture upload behavior and URL handling.
integration-tests/tests/ui-hover.spec.ts	Refactored to use dynamic handle coordinate utilities and pointer movement helpers.
package.json	Updated zigar-loader devDependency from ^0.14.0 to ^0.14.1.
src/WebGPU/canvasSizeObserver.ts	Improved robustness of content box size access and fallback logic.
src/WebGPU/pointer.ts	Renamed CameraMode to MouseMode, refactored zoom/pan logic, unified zoom function, and updated event handling.
src/WebGPU/programs/drawMSDF/getProgram.ts src/WebGPU/programs/drawTexture/getProgram.ts src/WebGPU/programs/drawTriangle/getProgram.ts src/WebGPU/programs/pickTexture/getProgram.ts src/WebGPU/programs/pickTriangle/getProgram.ts	All: Refactored to accept external matrix buffer, removed per-call uniform buffer updates, implemented bind group caching.
src/WebGPU/programs/drawTriangle/shader.wgsl	Refactored fragment shader for smooth, unified alpha blending logic.
src/WebGPU/programs/initPrograms.ts	Added and passed matrix buffers to program initializers, updated exports.
src/index.ts	Updated initCreator to support async texture upload and dynamic URL updates.
src/logic/index.zig	Changed asset map to array-based hash map, replaced background/boundary buffer returns with direct draw calls.
src/run.ts	Centralized matrix uploads to GPU buffers, removed explicit matrix passing to draw functions.
src/textures.ts	Extended TextureSource, deduplicated textures by pixel data, updated add callback, added URL update function.
webpack.config.js	Switched to string loader for .zig files, set optimize mode to 'ReleaseSmall', removed custom loader.
zigar-loader.cjs	Deleted: removed custom Zigar loader module.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant PlaywrightTest
    participant Utils
    participant WebApp
    participant GPU
    participant ZigLogic

    User->>PlaywrightTest: Run E2E test (e.g., resize, camera, texture upload)
    PlaywrightTest->>Utils: Call utility (e.g., selectAsset, moveAsset)
    Utils->>WebApp: Simulate pointer/mouse/keyboard events
    WebApp->>GPU: Update canvas, trigger draw calls
    WebApp->>ZigLogic: Update asset state, handle transformations
    ZigLogic-->>WebApp: Return updated state
    GPU-->>WebApp: Render frame
    WebApp-->>PlaywrightTest: DOM/canvas updated, test assertions

Loading

sequenceDiagram
    participant WebApp
    participant Textures
    participant GPU
    participant Uploader

    WebApp->>Textures: add(url, callback)
    Textures->>Textures: Check for URL or pixel duplicate
    alt New texture
        Textures->>Uploader: uploadTexture(url, onNewUrl)
        Uploader->>Textures: onNewUrl(newUrl)
        Textures->>Textures: updateTextureUrl(textureId, newUrl)
    end
    Textures->>GPU: Create or reuse GPU texture
    Textures-->>WebApp: callback(width, height, isNew)

Loading

Estimated code review effort

🎯 5 (Critical) | ⏱️ ~70 minutes

Possibly related PRs

• fix: add github actions to verify PR name #24: Modifies the same GitHub Actions workflow trigger conditions, directly related to the workflow change in this PR.
• feat: Resize and rotation #14: Shares focus on asset transformation logic and coordinate handling in integration tests and core design.
• feat: save and load state of the creator #13: Both PRs modify the initCreator function, this PR for async texture upload and the related one for asset state management.

Poem

🐇
A hop and a skip, the assets now glide,
With handles precise, and textures that hide,
Duplicates vanish, tests dance in delight,
WebGPU’s matrix now buffered just right.
The loader’s retired, the code’s feeling spry—
A rabbit’s proud wink as the pixels fly!
🌈✨

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npm error https://github.com/npm/cli/issues
npm error A complete log of this run can be found in: /.npm/_logs/2025-07-24T16_14_19_071Z-debug-0.log

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