Release 1.8.0

5DO 1.8.0

Released: 2026-11-11

5DO 1.8.0 adds MMPX 2x and Catmull-Rom bicubic filtering to every presenter, adds 5:4/16:9/16:10/21:9 aspect presets, and moves the build to .NET 11 / C# 15.

Download

System	Bundle
Windows x64	5do-1.8.0-win-x64.zip
Windows arm64	5do-1.8.0-win-arm64.zip
Linux x64	5do-1.8.0-linux-x64.tar.gz
Linux arm64	5do-1.8.0-linux-arm64.tar.gz
macOS x64	5do-1.8.0-osx-x64.dmg
macOS arm64	5do-1.8.0-osx-arm64.dmg

The apps are framework-dependent. Install the .NET 11 Runtime from https://dotnet.microsoft.com/download/dotnet/11.0 first; the bundles do not include the runtime.

See the release page for SHA256SUMS.txt.

Highlights

• MMPX 2x runs as a GPU rule pass in OpenGL/GLES, Direct3D 11, and Vulkan, with sharp-bilinear finishing and a CPU reference implementation.
• Bicubic adds Catmull-Rom 4x4 sampling in one pass on every presenter and in the CPU scaler.
• Aspect presets add 5:4, 16:9, 16:10, and 21:9 alongside 4:3, integer, stretch, and custom.
• .NET 11 / C# 15 with SDK 11.0.100, net11.0 projects, and DependencyInjection 11.0.0.

Fixed

• The invalid global.json SDK pin (11.0.0) is now 11.0.100.
• MMPX luma now uses the reference r + g + b + 1 term, restoring the triangle-tip and luminance tie-break rules; a regression test covers it.
• OpenGL now uses linear filtering for the MMPX intermediate so sharp-bilinear finishing matches Direct3D 11 and Vulkan.

Validation

• Full suite 2,158/2,158 passes in Debug with .NET SDK 11.0.100.
• Build, dotnet format --verify-no-changes, and jb inspectcode --severity=WARNING are clean.
• CI builds and tests on Windows, Linux, and macOS, runs trimmed and NativeAOT smoke, and publishes six framework-dependent bundles with no runtime, PDB, or XML files.