enricobuehlerandClaude Opus 4.8
6cbc3eec8b
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Parity with the Apple client (35c2c145): the SDL/Linux presenter built the
host-forwarded cursor as an OS cursor at its native bitmap size, so the
on-screen pointer tracked the HOST's display scaling — a 4K/high-DPI virtual
display forwards a 96 px bitmap that then rendered huge on the client.
SDL cursors are fixed-size from their surface (no draw-time scaling), so
cache the shapes RAW and resample each by the live video-fit factor
(min(window_px / mode) — the same aspect-fit `finger_to_content` uses) at
install time, rebuilding when the serial OR the fit changes (a resize). The
resample area-averages on premultiplied alpha so a transparent pixel's
colour can't bleed into the fringe. The pointer now stays sized to the
streamed desktop at any host scaling.
Not yet eyeballed on a Deck/Linux box — SDL's HiDPI cursor sizing is
version-dependent; validate on glass.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>