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On Windows Tauri, use devicePixelRatio directly to convert getBoundingClientRect CSS pixels to physical pixels. This is more reliable than combining desktopZoomScale (from PhStore) with the OS DPI scale factor (from Tauri) separately, as those two values can disagree on some devices due to stale zoom state, multi-monitor DPI mismatches, or DPI compatibility shims. macOS Tauri and Electron paths unchanged — they use desktopZoomScale since their capture APIs take logical coordinates.
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On Windows Tauri, use devicePixelRatio directly to convert getBoundingClientRect CSS pixels to physical pixels. This is more reliable than combining desktopZoomScale (from PhStore) with the OS DPI scale factor (from Tauri) separately, as those two values can disagree on some devices due to stale zoom state, multi-monitor DPI mismatches, or DPI compatibility shims.
macOS Tauri and Electron paths unchanged — they use desktopZoomScale since their capture APIs take logical coordinates.