The Android headless build only did software rendering. Vulkan takes the
offscreen path desktop headless already uses, and OpenGL ES renders into an
EGL pbuffer, so both run from adb shell with no window. Assets are found next
to the executable, like on desktop, instead of in an APK path that no longer
exists.
frametests.py --adb pushes the binary, assets and dumps to a device, runs each
dump there with Vulkan and GLES, and compares the screenshots with the host's
Vulkan render using Tools/image_compare.py.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
