Why input attachment still needs VkDescriptorSet.

Why input attachment still needs VkDescriptorSet. Can’t we just use input attachment without VkDescriptorSet

It’s funny. If you type this exact title into Google, Bing, or Duck-Duck-Go, your first hit is this Stack Overflow question.

Sorry didn’t taught this question already answered on SO. How to delete this thread. I can’t find the delete button.Thank you.