Renderpass page

[charles-lunarg]

Looking at the list of topics, it seems there is room for a short page on renderpasses.
Nothing extravagant, just a "heres what, why, when, and links to detailed descriptions" kind of thing.
I am willing to write it if others think its a useful/needed page.

Content Proposal:

• Purpose & rational
• Simple example/use case
• Subpasses, their limitations, and when to use them.
• Mention how mobile uses renderpasses for efficiency
• Links to external sources - Are these good links and what else is there to add?
  • Vulkan-Samples https://github.com/KhronosGroup/Vulkan-Samples/blob/master/samples/performance/render_subpasses/render_subpasses_tutorial.md
  • GPUinfo https://gpuopen.com/vulkan-renderpasses/
  • Samsung https://developer.samsung.com/game/renderpasses

[Andreyogld3d]

Example for VK_KHR_create_renderpass2 and VK_KHR_depth_stencil_resolve:
https://github.com/Andreyogld3d/Vulkan_VK_KHR_depth_stencil_resolve

[marty-johnson59]

Note, this has evolved a lot recently - would be good to clarify how folks should be using render passes today - perhaps part of the "how to Vulkan in 2024" chapter? Seems like an important topic - labeling as priority..

[SaschaWillems]

Agree. People new to Vulkan will probably be confused as to whether they should use render passes or dynamic rendering. And that has a lot of implications on how you write code, so people are sometimes a bit upset if they find out that Vulkan supports a renderpass-less approach after they wrote code using render passes.