/RealEngine

My toy engine, mainly for rendering experiment and prototyping.

Primary LanguageC++MIT LicenseMIT

RealEngine

My toy engine, mainly for rendering experiment and prototyping. It requires a GPU which supports DX12 Ultimate with latest driver. It is not supposed to be used in production, and prefers clean design and code over being heavily optimized. screenshot

some highlights

  • utilize latest DX12 features, such as raytracing, mesh shaders, HLSL 2021, etc.
  • render graph based architecture, with automatically barriers and transient resources management rendergraph
  • fully bindless resources with SM6.6
  • two-phase occlusion culling (like Ubi's GPU driven pipeline). no matter how many different meshes and textures, always two drawcalls(indirect DispatchMesh) per PSO.
  • hybrid rendering with raytracing
  • Print, DrawLine functions in shaders which can be very useful for debugging

planned features

  • render graph(barriers, resource aliasing, async compute)
  • GTAO
  • specular GI
  • diffuse GI
  • clustered shading
  • Bloom
  • Auto Exposure
  • TAA
  • CAS
  • meshlet
  • RTX
  • a reference pathtracer
  • FSR2/DLSS/XeSS
  • DOF
  • motion blur
  • visibility buffer
  • Direct Storage
  • maybe volumetric cloud/fog, water/ocean simulation, large-scale landscape, or any random things

AMD related issues

tested on RX6600(win11, Adrenalin 22.10.01.03)

  • using SV_IsFrontFace in an AS-MS-PS combine results in DXGI_ERROR_DRIVER_INTERNAL_ERROR when creating the PSO 
    D3D12: Removing Device.
D3D12 WARNING: ID3D12Device::RemoveDevice: Device removal has been triggered for the following reason (DXGI_ERROR_DRIVER_INTERNAL_ERROR: There is strong evidence that the driver has performed an undefined operation; but it may be because the application performed an illegal or undefined operation to begin with.). [ EXECUTION WARNING #233: DEVICE_REMOVAL_PROCESS_POSSIBLY_AT_FAULT]
  • denoiser_reproject.hlsl compiled with -O0 crashes when creating the PSO
  • HSR - raytrace pass with async compute results in GPU hang

third party licenses