The PBR implementation is restricted to standard PBR using the Roughness/Metallic workflow for now. With RBDOOM-3-BFG modders can work with modern tools and expect that their content looks as expected. PBR became the standard material authoring since 2014. RBDOOM-3-BFG only supports the standard PBR Roughness/Metallic workflow.Īdding PBR is a requirement to make the new content look the same in RBDOOM-3-BFG as in Blender 2.9x with Cycles or Eevee and Substance Designer. PBR allows artists to create textures that are based on real world measured color values and they look more or less the same in any renderer that follows the PBR guidelines and formulars. However I also want to support the modding scene to allow them to create brand new PBR materials made with Substance Designer/Painter or other modern tools so multiple rendering paths have been implemented. The light rigs aren't made for PBR but it is possible to achieve good PBR lighting even with the old content by tweaking the light formulars with a few good magic constants. Implementing Physically Based Rendering (PBR) in Doom 3 is a challenge and comes with a few compromises because the Doom 3 content was designed to work with the hardware constraints in 2004 and that even meant to run on a Geforce 3. Renderer Features Explained Physically Based Rendering

Replace collision detection and physics with PhysX 4.1.

Rip & Tear renderer backend with modern approaches by The-Forge.

Update texture compression based on Basis Universal GPU Texture and Texture Video Compression Codec.

Explore Screen Space Global Illumination with Christoph Schieds' A-SVGF realtime denoising because A-SVGF works really well in Q2RTX.

Scrap expensive multipass forward shading with a faster forward+ solution.

Improve MD5 files with a new Version 11 that allows to store normals for better control of smoothing groups.

md5mesh/.md5anim files from any FBX, DAE, glTF2 files

Doom 3 bfg edition vs doom 3