Fields
- flags: VkSubpassDescriptionFlags
- pipelineBindPoint: VkPipelineBindPoint
- inputAttachmentCount: u32
- pInputAttachments: *VkAttachmentReference
- colorAttachmentCount: u32
- pColorAttachments: *VkAttachmentReference
- pResolveAttachments: *VkAttachmentReference
- pDepthStencilAttachment: *VkAttachmentReference
- preserveAttachmentCount: u32
- pPreserveAttachments: *u32