Release 1.3.0

5DO 1.3.0

Released: 2026-11-06

5DO 1.3.0 is a presentation feature update on the 1.2.2 performance/library release. The six-bundle packaging model is unchanged: Windows, Linux, and macOS on x64 and arm64, with the CLI and desktop app in one framework-dependent bundle.

Highlights

• 480i/240p field handling. Settings > Video now selects Auto (detect 480i fields and weave them), Bob (present every field unchanged), Weave (always combine two fields), or Blend (average two fields into one flicker-free frame). The desktop defaults to Auto; the CLI and emulation core default to Bob.
• Auto detection. The detector compares same-index rows in adjacent fields with the vertical difference inside the current field. A verdict persists for 12 fields before weaving starts and 30 progressive fields before it stops. Per-game profiles and --deinterlace override detection.
• Correct aspect and integer scaling. Woven frames carry VdlFrame.PixelAspect = 0.5; OpenGL, Vulkan, Direct3D 11, and the CPU presenter keep the source display geometry. PAL 288-line fields weave to 576 lines.
• Screenshots and GIFs. Captures use the presented frame; sidecars record deinterlace and interlaced. GIFs rescale a mid-recording 240↔480 change instead of dropping frames.
• High-resolution safe. The opt-in 640x480 line-doubled mode is progressive and ignores weave/blend, so its output is unchanged.
• No 240p regression. Bob and auto hashes match over 3,000 frames on Road Rash, Space Ace, and Alone in the Dark, and 300 frames on Wolfenstein 3D and Lemmings.

Bundles

System	Bundle
Windows x64	5do-1.3.0-win-x64.zip
Windows arm64	5do-1.3.0-win-arm64.zip
Linux x64	5do-1.3.0-linux-x64.tar.gz
Linux arm64	5do-1.3.0-linux-arm64.tar.gz
macOS x64	5do-1.3.0-osx-x64.tar.gz
macOS arm64	5do-1.3.0-osx-arm64.tar.gz

Each bundle contains the desktop app, the CLI, README.md, LICENSE, THIRD-PARTY-NOTICES.md, whatsnew.md, the release notes, and the legal/OpenAL notices. SHA256SUMS.txt is attached to the release.

The apps are framework-dependent single-file executables. Install the .NET 10 Runtime from https://dotnet.microsoft.com/download/dotnet/10.0; no runtime is embedded in the bundle.

Verification

• Full suite: 1,833 tests passing in Debug and Release.
• dotnet format --verify-no-changes clean; frontend --smoke-test passed.
• Forced weave produced a 320x480 frame; forced blend stayed at 320x240; high-resolution Lemmings remained 640x480.
• Six bundles build; x64 runtime smoke tests pass; arm64 apphosts are architecture-verified.

Known issues

• Auto is a content heuristic, not a hardware mode bit. No local title is confirmed 480i, so synthetic complementary-field tests are the current 480i evidence.
• Woven captures are 320x480 (PAL 320x576) with half-height pixels; square-pixel viewers show them taller than 4:3.
• Crash 'n Burn (Japan) remains the single known no-video case in the 594-disc sweep.
• Linux GPU presentation is preview/best-effort under llvmpipe.
• Arm64 bundles are architecture-validated but not executed on arm64 hardware in CI.

See the full release notes and What's new.