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PrismaUI 2.1.1

Release date: 2026-09-20

PrismaUI 2.1.1 is the platform update that 2.2.0 builds on. It introduced the current controller, localization, modern API, rendering recovery, DevTools, focus/input, packaging, and ModelPreview execution contracts.

Native controller support​

  • Native flat-provider controller conversion is validated for Fallout 4 1.10.163 and Anniversary Edition 1.11.240.
  • Unsupported or unverified controller runtimes fail closed rather than installing guessed hooks.
  • Controller actions are delivered only to the focused Prisma view.
  • Cross-chain duplicate input is filtered so one physical sample does not activate the same action twice.
  • A/B/X/Y, shoulders, triggers, stick clicks, Back/Start, and D-pad directions can be mapped per view.
  • LT/RT use deterministic hysteresis.
  • Native Gamepad mode exposes live stick and trigger state through navigator.getGamepads().
  • Shared Xbox/PlayStation prompts remain presentation-only; canonical action names do not change with controller style.
  • Shared controller glyphs are constrained to the framework prompt size even when a consumer forgets the shared stylesheet, preventing full-size artwork from escaping into the UI.

Localization​

  • Added the V4 JSON localization API.
  • Files load through Fallout's resource system, covering loose files and BA2 archives.
  • The selected game language is detected from Fallout configuration with English fallback.
  • Flat and dotted keys are supported.
  • {{variable}} interpolation is exposed through window.PrismaL10N.
  • Malformed, oversized, or excessively deep files fail predictably.
  • The older translation path remains available for compatibility.

Public API​

  • Added the preferred PrismaUI_F4_Modern_API.h discovery surface.
  • Current feature tables are Core, Controller, GameThread, Meta, View, Interop, Localization, Render, Input, and Menu.
  • Consumers can discover only the feature contracts they require.
  • The existing PrismaUI_F4_API.h V1-V12 ABI remains compatible.
  • VR advertises only the modern features it implements and rejects unsupported feature requests.

Graphics and rendering​

  • Added cooperative recovery for compatible foreign Present and ResizeBuffers hooks.
  • Added mixed-ownership handling when Present and ResizeBuffers are owned by different compatible injectors.
  • Unreadable, malformed, conflicting, or self-owned hook targets remain fail-closed.
  • Fixed the focus watchdog so a focused static view does not need fake animation to retain focus.
  • Added per-view cursor ownership.
  • Improved Anniversary Edition and Proton cursor diagnostics without consuming input.
  • Removed the retired CEF backend and its build/runtime dependencies.

Ultralight DevTools​

  • Restored the packaged in-game Ultralight inspector on F12 when DevTools are enabled.
  • Includes Elements, Sources, Console, Network, Timelines, Storage, Graphics, Layers, and Audit panels.
  • Inspector assets are packaged and provenance-checked with the framework.
  • Focus, cursor, pause, teardown, callback lifetime, and reopen behavior were hardened.

Focus, input, and window activation​

  • Serialized game-window input-subclass installation through one route.
  • Added retry when the window is not yet ready.
  • Alt-Tab and window reactivation restore focused Prisma views without resurrecting views that were closed while inactive.
  • Full-focus versus overlay pass-through state, input regions, and cursor ownership are restored with activation.
  • Generic Escape, Dock input targeting, and deactivation capture behavior were hardened.
  • Prisma Dock compatibility was improved for pages supplied by other mods.

Installer and release packaging​

  • Added the versioned FOMOD installer.
  • Developer headers are optional.
  • Flat and VR release artifacts are published separately.
  • Boot and Dock assets are shipped from validated copies.
  • The Ultralight runtime is staged from the pinned release package.
  • Release archives carry SHA-256/provenance data tied to the exact source commit.
  • Optional controller, localization, and SVG raster test mods are available through the installer where applicable.
  • The retired PrismaOnMesh demo is no longer part of the package.

ModelPreview and internal execution​

The Ultralight backend was split into focused modules for dispatch, views, callbacks, frames, presentation, input, runtime loading, inspector, file-system, and document handling without changing the public behavior contract.

ModelPreview engine-backed file reads are serviced through the verified game-thread dispatcher after Present unwinds. This keeps blocking engine reads out of the active Present stack while preserving the existing public ModelPreview bridge.

Compatibility​

Existing V1-V12 consumers do not need to rebuild solely for 2.1.1. New integrations should prefer the Modern API, and existing consumers can remain on the compatibility ABI they already use.