How to compile for the Metal backend:
cd $SKIA_ROOT_DIRECTORY mkdir -p out/ios_arm64_mtl cat > out/ios_arm64_mtl/args.gn <<EOM target_os="ios" target_cpu="arm64" skia_use_metal=true skia_use_expat=false skia_enable_pdf=false EOM tools/git-sync-deps bin/gn gen out/ios_arm64_mtl ninja -C out/ios_arm64_mtl skottie_example
Then install the out/ios_arm64_mtl/skottie_example.app
bundle.
How to compile for the CPU backend:
cd $SKIA_ROOT_DIRECTORY mkdir -p out/ios_arm64_cpu cat > out/ios_arm64_cpu/args.gn <<EOM target_cpu="arm64" target_os="ios" skia_enable_gpu=false skia_enable_pdf=false skia_use_expat=false EOM tools/git-sync-deps bin/gn gen out/ios_arm64_cpu ninja -C out/ios_arm64_cpu skottie_example
Then install the out/ios_arm64_cpu/skottie_example.app
bundle.
How to compile for the OpenGL backend:
cd $SKIA_ROOT_DIRECTORY mkdir -p out/ios_arm64_gl cat > out/ios_arm64_gl/args.gn <<EOM target_cpu="arm64" target_os="ios" skia_enable_gpu=true skia_use_metal=false skia_enable_pdf=false skia_use_expat=false EOM tools/git-sync-deps bin/gn gen out/ios_arm64_gl ninja -C out/ios_arm64_gl skottie_example
Then install the out/ios_arm64_gl/skottie_example.app
bundle.