bench(b, color.RGBAModel, color.RGBAModel, color.AlphaModel, Over)
}

func BenchmarkGrayMaskOver(b *testing.B) {
	bench(b, color.RGBAModel, color.GrayModel, color.AlphaModel, Over)
}

func BenchmarkRGBA64ImageMaskOver(b *testing.B) {
	bench(b, color.RGBAModel, color.RGBA64Model, color.AlphaModel, Over)
}

func BenchmarkRGBA(b *testing.B) {
	bench(b, color.RGBAModel, color.RGBA64Model, nil, Src)
}