Cargo Features

[dependencies]
blend2d-sys = { version = "0.3.0", default-features = false, features = ["avx", "avx2"] }
default = avx, avx2, sse2, sse3, sse4_1, sse4_2, ssse3

These default features are set whenever blend2d-sys is added without default-features = false somewhere in the dependency tree.

sse2 sse3 ssse3 sse4_1 sse4_2 avx default
avx2 default

blend2d-sys has 3 features without comments.