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