v1.0.0-android-ahb — AHardwareBuffer frame generation for Android/Turnip

LSFG-VK Android AHB Build

Prebuilt Vulkan implicit layer for Lossless Scaling frame generation on Android (arm64-v8a).

What changed from upstream

• Uses AHardwareBuffer-based image sharing instead of OPAQUE_FD (Turnip/Mesa doesn't support OPAQUE_FD)
• Uses vkGetImageMemoryRequirements instead of vkGetAndroidHardwareBufferPropertiesANDROID (bypasses Vortek ICD wrapper gap)
• Sync via presentContext(-1, {}) + waitIdle() instead of semaphore FD export
• Uses TMPDIR env var instead of hardcoded /tmp
• AHB function pointer made optional — device layer init doesn't fail if unavailable

Build config

• NDK 27, arm64-v8a, API 26, c++_static STL, Release
• LSFGVK_ANDROID_WINE=ON, VK_USE_PLATFORM_ANDROID_KHR=1
• Linked: libdl, libm, libc, libandroid

Files

• liblsfg-vk-layer.so — stripped, 2.4MB. Install to ~/.local/lib/ in container
• VkLayer_LS_frame_generation.json — Vulkan layer manifest. Install to ~/.local/share/vulkan/implicit_layer.d/

Runtime requirements

• Lossless.dll (user-supplied, auto-discovered from Steam app 993090)
• Vulkan 1.3+ device with VK_ANDROID_external_memory_android_hardware_buffer support