v0.1.3 — Dual gralloc backend support (standalone)

v0.1.3 Release Notes

Validated aosp_cf_arm64_only_phone_qemu build outputs with dual gralloc
backend support (minigbm + ranchu).

What Changed

• The QEMU product now ships both gralloc backends as standalone vendor
  binaries (not APEXes):
  • android.hardware.graphics.allocator-service.minigbm + mapper.minigbm
    — default for plain-QEMU/software-GL
  • android.hardware.graphics.allocator-service.ranchu + mapper.ranchu
    — gfxstream-native, for gfxstream-capable hosts
• The QEMU init fragment (init.vendor.qemu.rc) stops the default minigbm
  allocator and starts the ranchu one when ro.hardware.gralloc=ranchu.
• SELinux file_contexts added for the ranchu allocator binary and mapper.
• The goldfish allocator-service.ranchu module no longer bundles init_rc or
  vintf_fragments so it coexists with the minigbm allocator on Cuttlefish.

What Is Included

• aosp_cf_arm64_only_phone_qemu-out-2026-03-21.tar.zst
• matching manifest and SHA-256 files

How To Use It

1. Extract the archive under the repository root.
2. Place the included image files under src/out/target/product/vsoc_arm64_only.
3. Run ./scripts/prepare_plain_qemu.sh.
4. Follow docs/BOOT.md for the validated no-harness QEMU launch flow.

For gfxstream hosts, set QEMU_BOOT_HARDWARE_GRALLOC=ranchu in the launch
environment.

Validated Facts

• guest ADB: 127.0.0.1:6550
• sys.boot_completed=1
• ro.hardware.gralloc=minigbm
• ro.hardware.hwcomposer=ranchu
• debug.hwui.renderer=skiagl
• debug.renderengine.backend=skiaglthreaded
• ro.hardware.egl=angle
• ro.hardware.vulkan=pastel
• android.hardware.graphics.allocator-service.minigbm running (PID 552)
• android.hardware.graphics.allocator-service.ranchu binary present at
  /vendor/bin/hw/
• mapper.ranchu.so present at /vendor/lib64/hw/
• no SurfaceFlinger crashes
• no gralloc APEX in /vendor/apex/