Version 4.155.0

M155 engine and interoperability · NuGet (prerelease)

API changes · SkiaSharp API diff · HarfBuzzSharp API diff

Highlights

SkiaSharp 4.155.0 advances to Skia m155 with servicing fixes and refreshed HarfBuzzSharp support. It also updates GLES interop for pointer-based platform calls and disables RAW and DNG decoding while retaining source and binary compatibility.

Breaking Changes

None in this preview line.

Engine

• Skia updated to milestone M155 — Updates the bundled renderer to Chrome milestone M155 and incorporates later upstream fixes, including corrections for failed-flush cache entries and FontConfig family matching. (#5081, #5196, #5286)

API Surface

• GLES platform interop uses explicit pointers — GLES and WinUI EGL interop now use blittable pointer-based calls, with existing platform callers pinned explicitly instead of relying on managed array and string marshalling. (#5155)
• HarfBuzzSharp 14.4 OpenType tags exposed — The HarfBuzzSharp update provides documented OpenType bit and number tag enums for usable native tag values without exposing raw native-shaped APIs. (#5135)

Bug Fixes

• RAW and DNG decoding disabled — The bundled decoder no longer accepts RAW or DNG images. The SKEncodedImageFormat.Dng value remains available for source and binary compatibility, but it does not indicate codec support. (#5162)

HarfBuzzSharp 14.4.0

HarfBuzzSharp now ships with HarfBuzz 14.4.0 and adds documented OpenType bit and number tag enums while keeping raw native fetch helpers internal.

Release Candidate 1 (October 12, 2026)

Release Candidate 1 incorporates the final M155 servicing fixes before the stable release.

Full changelog

Preview 2 (September 29, 2026)

Preview 2 updates HarfBuzzSharp, adopts pointer-based GLES interop, and disables RAW and DNG image decoding.

Full changelog

Preview 1 (September 22, 2026)

Preview 1 opens the 4.155 line with the Skia M155 renderer.

Full changelog