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fix(ui): disable modal backdrop blur under software rendering (#1092)

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With hardware acceleration disabled, Chrome rasterizes in software and a
full-viewport backdrop-filter forces a per-frame CPU blur over everything
behind the modal, freezing the whole browser.

Detect software rendering via the unmasked WebGL renderer string at app
startup and drop the backdrop blur in that case. Also route the download
modal's sticky toolbar through the shared --modal-backdrop-blur variable
instead of a hardcoded blur(8px).
This commit is contained in:
Will Miao
2026-09-02 12:24:32 +08:00
parent bc33e32c6f
commit b37238d790
5 changed files with 143 additions and 3 deletions
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static/css/components/modal/_base.css
+10
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@@ -13,6 +13,16 @@
overflow: auto; /* Change from hidden to auto to allow scrolling */
}
/* Software-rendering fallback (set by applyModalBackdropBlurPolicy): a
full-viewport backdrop-filter forces per-frame CPU rasterization of
everything behind the modal and freezes the browser (issue #1092) */
html.no-modal-backdrop-blur .modal,
html.no-modal-backdrop-blur .delete-modal,
html.no-modal-backdrop-blur .batch-preview-select-all {
backdrop-filter: none;
-webkit-backdrop-filter: none;
}
/* Prevent body scroll when modal is open */
body.modal-open {
position: fixed;