100644 blob 40d2a6c30c9c428fb27ec9a803bf46db5c728557	fetch_sources.py
040000 tree 8501891b76353b683f0c9a754c3198ca5ec34120	glslang
040000 tree 61cce8890695e498604f32df6ec51c5fd1310a5b	libpng
040000 tree 9a7f448cdd32d4a4bd8f3627d6527f5d1dae7b4d	spirv-tools
040000 tree 1e1bea7a567f5aa71634b6dadc7ba7911955cb69	vulkancts
040000 tree 36b6e0af84ce4e2af172f51f1240460da470ceac	zlib