SkiaShift

SkiaShift is an advanced, root-level Android rendering engine manager built as an LSPosed module. It allows granular control over the hardware-accelerated 2D rendering engine (HWUI), giving users the ability to force Vulkan (skiavk) or OpenGL (skiagl) on a per-app basis.

SkiaShift directly addresses issues where certain apps crash or suffer severe performance degradation (SIGSEGV) under specific rendering backends, allowing you to maximize battery efficiency and performance dynamically.

Features

• Per-App Rendering Override: Force OpenGL or Vulkan explicitly on any installed application.
• Native Memory Hooking: Utilizes ByteHook and ShadowHook to intercept and override system properties natively in memory. Bypasses Android's read-only (ro.*) restrictions dynamically without modifying the system partition.
• Miuix Design System: A clean, modern, and fluid user interface powered by top.yukonga.miuix.kmp featuring dynamic day/night theming.
• Storage Access Framework (SAF): Easily backup and restore your configuration to JSON files directly onto your device's storage.
• Global Fallback Control: Set a system-wide default rendering engine, with granular overrides for problematic applications.

Screenshots

Prerequisites

• Android Version: Android 12 to 16.
• Root Access: Magisk or KernelSU.
• LSPosed Framework: Required to inject the native hooks into target applications.

Installation

1. Download the latest app-debug.apk release or compile the project from source.
2. Install the APK on your device.
3. Open LSPosed Manager.
4. Enable the SkiaShift module.
5. In the module scope, select all applications you wish to apply custom rendering rules to.
6. Reboot your device (or perform a soft reboot) to apply the hooks.

Usage

1. Open the SkiaShift app.
2. Under the Global Default Renderer, choose your preferred system-wide backend (Vulkan or OpenGL).
3. Scroll through the application list and select specific rendering engines for any app requiring overrides (e.g., forcing OpenGL on a legacy game that crashes under Vulkan).
4. Tap the Save floating action button to apply the global properties via Root.
5. (Optional) Use the Export Configuration and Import Configuration options to backup your settings via the system file picker.

How It Works

Android 12+ transitioned HWUI to Skia, bringing both Vulkan (skiavk) and OpenGL (skiagl) pipelines. Some system implementations default to Vulkan for efficiency, which can cause older apps to instantly crash due to Buffer Age or Task Splitting incompatibilities.

Since the ro.hwui.use_vulkan property is read-only, SkiaShift leverages ShadowHook and ByteHook written in native C++ to intercept __system_property_get, property_get, and android::base::GetProperty at runtime. When an injected application queries the system rendering backend, SkiaShift seamlessly feeds it the specific ro.hwui.use_vulkan and debug.hwui.renderer values assigned to it via the configuration file, forcing the GPU to compile the correct HWUI pipeline.