Specifying attachments descriptions

A render pass represents a set of resources (images) called attachments, which are used during rendering operations. These are divided into color, depth/stencil, input, or resolve attachments. Before we can create a render pass, we need to describe all the attachments used in it.

How to do it...

1. Create a vector with elements of type VkAttachmentDescription. Call the vector attachments_descriptions. For each attachment used in a render pass, add an element to the attachments_descriptions vector and use the following values for its members:
   • 0 value for flags
   • The selected format of a given attachment for format
   • The number of per pixel samples for samples
   • For loadOp, specify the type of operation that should be performed on an attachment's contents when a render pass is started--a VK_ATTACHMENT_LOAD_OP_CLEAR value if the attachment contents should be cleared, a VK_ATTACHMENT_LOAD_OP_LOAD value if its current contents should be preserved or a VK_ATTACHMENT_LOAD_OP_DONT_CARE...