Vulkan Render Pass and Attachments

Write a C program that models a Vulkan-style render pass with two subpasses (deferred rendering).

Requirements:

• Define structs for Attachment, AttachmentReference, and Subpass
• Define 4 attachments:
  • Color 0: G-buffer position (RGBA16_FLOAT), load=CLEAR, store=DONT_CARE
  • Color 1: G-buffer normal (RGBA8_UNORM), load=CLEAR, store=DONT_CARE
  • Color 2: G-buffer albedo (RGBA8_UNORM), load=CLEAR, store=DONT_CARE
  • Depth: depth buffer (D32_FLOAT), load=CLEAR, store=DONT_CARE
• Define 2 subpasses:
  • Subpass 0 (G-buffer fill): writes position, normal, albedo; uses depth
  • Subpass 1 (lighting): reads position, normal, albedo; writes final color
• Print the complete render pass configuration:
  • List all attachments with format, load op, store op
  • List each subpass with its input and output attachments
  • Show the data flow: which attachments are produced by subpass 0 and consumed by subpass 1
• Calculate and print the total memory footprint assuming a 1920x1080 framebuffer
• Explain why load/store ops matter for mobile GPU performance