auto PerformAlphaBlending(const AlphaBlendingInputLayer& bg, const AlphaBlendingInputLayer& fg, const AlphaBlendingOutput& out, size_t num_pixels, bool alpha_is_premultiplied, bool clamp) -> void

auto PerformAlphaBlending(const float* bg, const float* bga, const float* fg, const float* fga, float* out, size_t num_pixels, bool alpha_is_premultiplied, bool clamp) -> void