Version 4.150.0

Skia m150 and new filter APIs · Released July 7, 2026 · NuGet · GitHub Release

API changes · SkiaSharp API diff · HarfBuzzSharp API diff

Highlights

SkiaSharp 4.150.0 upgrades to Skia m150 and adds image filter, color filter, and fast-bounds APIs. This release lands three new image-processing APIs, a performance improvement for SKSurface, and HarfBuzz 14.2.1. It also completes the v4 breaking change story by promoting remaining obsoletes to compile errors and removing .NET Interactive support.

Breaking Changes

Remaining pre-v4 obsolete members promoted to compile errors — SKPaint text/font members and enum values that were marked [Obsolete] in v3 now emit compile errors in v4. Migration: switch to SKFont for text sizing and typeface assignment and remove any references to the removed enum values. (#4195)
.NET Interactive (Polyglot Notebooks) support removed — The SkiaSharp .NET Interactive / Polyglot Notebooks integration package has been removed. If you depend on it, pin to 4.148.x or migrate to the standard SkiaSharp NuGet package. (#4186)

Engine

Skia upgraded to milestone m150 — The bundled Skia engine is now built from chrome/m150, bringing upstream rendering bug fixes and performance improvements across all platforms. (#4146, #4190)

API Surface

SKPaint.GetFastBounds() for quick-reject culling — A new GetFastBounds() method returns a conservative bounding box for a paint, enabling fast visibility culling without a full draw pass. (#4271)
New image filter factories: CreateCrop and CreateEmpty — SKImageFilter gains two new factory methods — CreateCrop() to crop the output of a filter chain, and CreateEmpty() to produce a no-op transparent filter. (#4229, #4228)
SKColorFilter.CreateOverdraw() for overdraw visualization — A new overdraw color filter maps pixel overdraw counts to a configurable color ramp, making it easy to visualize rendering hotspots. (#4227)
HarfBuzz updated to 14.2.1 — The bundled HarfBuzz library is updated to 14.2.1, picking up upstream shaping bug fixes. (#4167)

Bug Fixes

Small-sigma raster blur regression fixed — A regression introduced in an upstream sync caused incorrect raster-pipeline blur results for small sigma values. The fix defines SK_AVOID_SLOW_RASTER_PIPELINE_BLURS, restoring the correct fast path. — ❤️ @ramezgerges (#4269)

Lifecycle & Internals

SKSurface.Canvas wrapper cached across calls — SKSurface now caches its Canvas wrapper instead of creating a new managed object on every access, eliminating repeated allocations in render loops. — ❤️ @ramezgerges (#4247)

HarfBuzzSharp 14.2.1

HarfBuzzSharp 14.2.1 ships with this release, updating the bundled HarfBuzz library to 14.2.1 with upstream shaping bug fixes.

Community Contributors ❤️

Thank you to everyone who contributed to this release!

Contributor	Contributions
@ramezgerges	Raster blur regression fix, SKSurface canvas-wrapper caching, and Uno sample updates (#4195, #4247, #4269)

Release Candidate 1 (June 29, 2026)

Release Candidate 1 added SKPaint.GetFastBounds(), the three new filter factory methods (CreateCrop, CreateEmpty, CreateOverdraw), the SKSurface canvas-wrapper cache, and the small-sigma blur regression fix.

Full changelog

Preview 2 (June 24, 2026)

Preview 2 promoted remaining v4 obsoletes to compile errors, removed .NET Interactive support, and updated HarfBuzz to 14.2.1.

Full changelog

Preview 1 (June 13, 2026)

Preview 1 opened the 4.150 line with the Skia m150 milestone upgrade.

Full changelog