KytyPlus v1.9 — Cross-Platform Performance & Infrastructure Release

Tag: v1.9 · License: GPL-2.0

Downloads

• Windows: KytyPlus-v1.9-windows-x64.zip
• macOS: KytyPlus-v1.9-macOS-x86_64.zip
• Linux: KytyPlus-v1.9-linux-x86_64.zip

All three builds are produced and verified automatically by CI on every tagged release (see Infrastructure below).

What's new vs v1.8

Performance

• Translation-block cache keyed by guest PC (src/core/ICache.hpp).
  Translated guest code blocks are cached by their guest address and looked up on subsequent execution of the same address, so a block is translated once and reused rather than re-translated each time it is reached. Blocks are stored in a page-aligned executable memory pool allocated once at startup, avoiding repeated executable-memory syscalls per block. A Flush() primitive is provided to invalidate cached blocks when guest code is modified or unloaded.

  Note: This is an address-keyed block cache with a single executable pool. It is not an LRU cache, has no fixed entry cap, and no eviction policy. No performance multiplier is claimed for this release.

• 60 FPS frame-pacing target (src/graphics/presentation/window/window.cpp).
  The render loop now targets a 16.67 ms per-frame interval. This is a pacing target in the render loop; it is not a measured gameplay framerate and does not guarantee 60 FPS in any title. Actual framerate depends on the emulated title, the host hardware, and I/O (see Benchmarks).

Launcher

• Direct QProcess launch (src/launcher/src/mainDialog.cpp).
  The launcher now spawns kyty_emulator directly via QProcess instead of wrapping it in cmd.exe /K. This removes the stray console window and avoids the path-separator issues that previously affected launching from external drives.

Infrastructure

• Cross-platform CI releases (.github/workflows/build.yml).
  CI now builds and verifies Windows, macOS, and Linux artifacts on every push and pull request, and automatically packages and publishes all three zips as GitHub release assets when a v* tag is pushed. Each platform job verifies its own binary (e.g. ldd/readelf checks on Linux, file checks on macOS) before the release job uploads anything.

Bug fixes carried forward from v1.8

• Event-flag Clear() bitmask inversion fixed.
• Thread-unsafe singleton fixed.
• ELF loader compile error fixed.
• HD haptics support for DualSense.
• Ray-tracing extension loading.
• Launcher external-drive path fix.
• Various stability fixes (CloseAll, FillRandomBuffer, quick_exit, UniqueFunction, event queue).

Expectations

This release is a performance and infrastructure milestone, not a performance result. It ships the engineering for cross-platform CI and a direct-launch launcher, and lays groundwork (address-keyed block cache, frame-pacing target) for future measurement. It does not claim a framerate improvement, because no v1.9 measurement exists yet.