The powered-preview iframe can finish loading while its viewport is
still 0x0 (hidden/animating dialog). Every WebGL example sized its
canvas once at init plus on window resize, so when no resize event is
delivered after the dialog settles, the drawing buffer stays 0x0 and
the preview renders black until something (e.g. opening the plugin-info
panel) changes the iframe width.
Guard each resize handler to no-op when dimensions are unchanged and
call it from the render loop, so the canvas self-heals within one frame
of the iframe getting its real size — no reliance on resize events.
Applies to all 15 webgl-* examples.
Reported by QA: preview stays black until fullscreen/plugin-info is
toggled.
Co-authored-by: Tuola Ge <gexingli@refly.ai>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
* feat(powered-preview): implement cross-origin isolation for WebGL and Worker artifacts
- Introduced a new powered preview feature that allows rendering HTML artifacts in a cross-origin-isolated iframe, enabling the use of Web Workers, WASM, and SharedArrayBuffer.
- Added API endpoint `/api/preview/isolation` to report the daemon's directly-reachable HTTP origin for rendering.
- Implemented logic in the file viewer to determine if an artifact requires powered preview based on its content.
- Updated the file serving routes to support powered preview, ensuring proper headers are set for cross-origin isolation.
- Enhanced the user interface to include new scenarios for WebGL and Worker visualizations in the home hero section, with corresponding translations and descriptions.
This feature addresses the limitations of the opaque-origin preview sandbox, allowing for more complex GPU and compute applications to function correctly.
* feat(preview): add WebGL templates and lazy HTML previews
* test(web): stabilize project back routing assertion
* fix(preview): address powered preview review blockers
* fix(preview): isolate powered preview origin
XingliGe