DirectX11, 12, OpenGL, Vulkan

tags:

• [[Programming]]
• [[DirectX]]
• [[OpenGL]]

• [[Graphics]]

Debug method

• GL: orbuculum
• DX: Enable Debug flag when create instance
• VK: Load Debug Layer

Design

• Async
  • dx11, 12: fence
  • gl, dx9: none
  • vk: sync primitive
• exectute sequence
  • gl, dx9: by cpu
  • dx11, dx12: fence
  • dx12, vk: barrier

Abstraction Level

• Application level
  • dx11: adapter
  • dx12: adapter, device
  • gl: state machine on instance
• Thread level
  • dx11: state machine on device
  • dx12: state machine on commandlist
  • gl, dx9: no
• Task level
  • dx11, gl: no
  • dx12: command allocator, command bundle
  • vk: command buffer

GPU resource

• Essential thing in DX
  • cpu, gpu r/w are incompatible
• Shader types
  • DX constant buffer(b1, b0 constant buffer views (CBV)) = GL/Vk uniform buffer
  • DX structured buffer(u0, u1 unordered access views (UAV)) = GL/Vk shader storage Buffer
  • DX Texture (t0, t1 shader resource views (SRV)) = GL/Vk texture
• GPU resource
  • dx11: SRV, RTV……
  • dx12: Heap